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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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FORM 10-K/A
(Amendment No. 1)10-K
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xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 20152017
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM             TO
Commission File Number: 001-35146
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RPX Corporation

(Exact Name of Registrant as Specified in Its Charter)
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Delaware
(State or Other Jurisdiction of
Incorporation or Organization)
One Market Plaza, Suite 1100
San Francisco, California 94105
(Address of Principal Executive Offices and Zip Code)
26-2990113
(I.R.S. Employer
Identification No.)

ONE MARKET PLAZA, SUITE 800
SAN FRANCISCO, CALIFORNIA 94105
(Address of Principal Executive Offices and Zip Code)
Registrant’s Telephone Number, Including Area Code: (866) 779-7641
(Registrant's telephone number, including area code)
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Securities Registered Pursuant to Section 12(b) of the Act:
   
Title of Each Class Name of Each Exchange on Which Registered
Common Stock, $0.0001 Par Value The NASDAQ Stock Market LLC


Securities Registered Pursuant to Section 12(g) of the Act:
None
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Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
YES ¨ NO ýx
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. 
YES ¨ NO ýx
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  ýx    NO ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data file required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   YES ýx NO ¨


Table of Contents

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨x
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer xo Accelerated filer ¨x
Non-accelerated filero(Do not check if a smaller reporting company)Smaller reporting companyo
Emerging growth companyo
       
Non-accelerated filerIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  
¨ (Do not check if a smaller reporting company)
Smaller reporting company¨o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).   YES ¨  NO ýx
The aggregate market value of the common stock held by non-affiliates of the registrant was $894.4$645.1 million as of June 30, 2015,2017, which is the last business day of the registrant’s most recently completed second fiscal quarter, based upon the closing sale price on The NASDAQ Global Select Market reported for such date. Shares of common stock held by each officer and director and by each person that owned 5 percent or more of the Registrants outstanding Common Stockaffiliates were excluded due to the fact that such persons may be deemed to be affiliates.excluded. This determination of affiliate status is not necessarily a conclusive determination for other purposes.
There were 51,603,87249,899,559 shares of the registrant’s common stock issued and outstanding as of February 19, 2016.23, 2018.

Documents Incorporated by Reference:
None.Portions of the Definitive Proxy Statement for registrant’s 2018 Annual Meeting of Stockholders (the “2018 Proxy Statement”), are incorporated by reference in Part III of this Form 10-K to the extent stated herein. The 2018 Proxy Statement will be filed within 120 days of the registrant’s fiscal year ended December 31, 2017.




Explanatory Note


ThisRPX Corporation
Form 10-K Annual Report on Form 10-K/A (the “Amendment”) is being filed as Amendment No. 1 to
For the Registrant’s Annual Report on Form 10-K for the fiscal year ended December 31, 2015 filed with the Securities and Exchange Commission on February 26, 2016 (the “Original Filing”) for the purposes of including information that was to be incorporated by reference from the Registrant's definitive proxy statement pursuant to Regulation 14A of the Securities and Exchange Act of 1934. The Registrant will not file its definitive proxy statement within 120 days of its fiscal year ended December 31, 2015 and is therefore amending its Annual Report on Form 10-K as set forth below to include such information.2017

In addition, pursuant to the rules of the SEC, we have also included as exhibits currently dated certifications required under Section 302 of The Sarbanes-Oxley Act of 2002. Because no financial statements are contained within this Amendment, we are not including certifications pursuant to Section 906 of The Sarbanes-Oxley Act of 2002. We are amending and refiling Part IV to reflect the inclusion of those certifications.

Except as described above, no other changes have been made to the Original Filing. Except as otherwise indicated herein, this Amendment continues to speak as of the date of the Original Filing, and we have not updated the disclosures contained therein to reflect any events that occurred subsequent to the date of the Original Filing. The filing of this Annual Report on Form 10-K/A is not a representation that any statements contained in items of our Annual Report on Form 10-K other than Part III, Items 10 through 14, are true or complete as of any date subsequent to the Original Filing.



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FORWARD-LOOKING INFORMATION
This Annual Report on Form 10-K contains “forward-looking statements” that involve risks and uncertainties, as well as assumptions which, if they never materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. The statements contained in this Annual Report on Form 10-K that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Exchange Act of 1934, as amended. Forward-looking statements are often identified by the use of words such as, but not limited to, “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would,” and similar expressions or variations intended to identify forward-looking statements. Forward-looking statements include statements regarding our business strategies and business model, products, benefits to our clients, future financial results and expenses, our acquisition of Inventus Solutions, Inc. ("Inventus"), our patent acquisition spending, our competitive position, and the previously announced process to explore and evaluate strategic alternatives to maximize shareholder value. These statements are based on the beliefs and assumptions of our management based on information currently available. Such forward-looking statements are subject to risks, uncertainties and other important factors that could cause actual results and the timing of certain events to differ materially from future results expressed or implied by such forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below, and those discussed in the section titled “Risk Factors” included in Part I, Item 1A of this Annual Report on Form 10-K.

Furthermore, such forward-looking statements speak only as of the date of this report. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.
PART I.
Item 1.Business.
Overview
RPX Corporation (together with its subsidiaries, “RPX”, “the Company”, “our”, “we” or “us”) was incorporated on July 15, 2008 in the state of Delaware. We help companies reduce patent litigation risk and corporate legal expense through two primary service offerings: our patent risk management services and our discovery services.

Our patent risk management services help companies reduce patent-related risk and expense through subscription-based services that facilitate more efficient exchanges of value between owners and users of patents compared to transactions driven by actual or threatened litigation. Our patent risk management membership clients pay an annual subscription fee and in return, receive access to substantially all of our patent portfolio as well as an array of services provided throughout their membership. Access to these services is available primarily through discussions with our professionals—particularly client services and our team of patent experts, as well as through a proprietary database, and attendance of regularly scheduled conferences.

In addition to our subscription-based patent risk management services, we underwrite patent infringement liability insurance policies to insure against certain costs of litigation. We use a reinsurance subsidiary company to assume a portion of the underwriting risk on the insurance policies that we issue on behalf of third party underwriters. Our insurance product helps policyholders manage and cap their risk of patent litigation. We are responsible for claims management and provide pre-litigation support to our policyholders based on our proprietary patent market data, which helps them manage their patent risk efficiently.

Our discovery services offering helps clients manage the costs and risks related to the legal discovery process through the use of technology and a comprehensive managed services model. Our approach is designed to streamline the administration of litigation matters, internal and external investigations, regulatory compliance, and other matters by offering a wide range of technology-enabled services including document collection and processing, document review, document production, and project management. Our discovery services clients include corporations and law firms.

Revenue from our patent risk management services constituted 76%, 80%, and 100% of our total revenue for the years ended December 31, 2017, 2016 and 2015, respectively. Revenue from our discovery services constituted 24%, 20%, and 0% of our total revenue for the years ended December 31, 2017, 2016 and 2015, respectively, as we began offering these services in 2016 as a result of our acquisition of Inventus.

The Markets

Patent Risk Management Market
The United States Constitution empowers Congress “to promote the progress of science and the useful arts by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries” through the grant of patents. Patent rights are a key component of a knowledge-based economy and are assets that can be bought, sold or licensed. We refer to the market in which participants exchange value — whether through the sale or licensing of patents — as the “patent market.”

Monetization of Patents
Historically, the following fundamental attributes of patents have enabled patent monetization:
Patents Provide a Limited Monopoly – In exchange for public disclosure of an invention, a patent owner is granted a monopoly over the use of a patented invention for a specified period, typically 20 years from the filing of the patent application.
Patents Confer Negative Rights – Patent rights are negative rights, meaning that they generally enable a patent owner to exclude others from commercial exploitation of a patented invention, regardless of whether the patent owner has the resources to manufacture or commercialize the invention. As the owner of a negative right, a patent owner has recourse through litigation to prevent others from using, making, offering for sale or selling the patented invention. Even when the patented invention is only a component of a broader product or service, the negative right can be enforced against any product or service that practices the claims of the patented invention.
Patents May Be Licensed and are Infinitely Divisible – A patent owner can authorize the use of the patented invention by one or more parties, typically in exchange for licensing fees. There is no legal limit to the amount of licenses a patent owner can provide to market participants.
Patents Are Assets That Can Be Transferred – A patent can be sold, in which case the negative right and monopoly associated with the patented invention are transferred to the buyer. When a patent is sold, the buyer’s negative rights may be constrained by licenses granted by previous owners.

More recently, several developments have increased opportunities for patent monetization and created an environment that is more favorable to investing in patents for the purpose of generating financial returns. These developments include:
Improved Search Capabilities – The entire database of United States patents is searchable on the Internet, enabling patent investors to quickly identify patents and their owners. The Internet also makes it much easier for patent owners to identify and research products and services that may practice the claims of their patented inventions.
Increasing Rate of Issuance of Technology Patents – Patents issued with class code identifiers that we classify as technology-related patents have nearly doubled in the past 10 years.
Overlap of Technology Patents – Because inventors can patent incremental improvements to existing inventions, multiple patents can apply to individual components of a product or service. Consequently, multiple patent owners may seek to extract license fees related to a single product or service. One example of this overlap of patents is semiconductor technology known as DRAM. Today, there are several thousand issued United States patents with “DRAM” specifically listed as a claim element. These DRAM patents span design, fabrication, testing and component technology including dies, capacitors, memory cells, transistors, integrated circuits, substrates and packaging. Each of those aspects may be covered by multiple patents that could be infringed by a DRAM semiconductor device or downstream product. Potential infringement of these patents could occur by anyone who designs, makes, uses or sells a product using this technology.
Technology Convergence – Complex products, such as smartphones, incorporate numerous technology components, and a constantly expanding set of features and services, including touchscreens, Internet access, streaming video, media playback, app downloads, and Wi-Fi, Bluetooth, and other connectivity options. The addition of features and services often exposes these products to additional claims of patent infringement.
Technology Diffusion – As the costs of certain technologies decline — especially computing and communications technologies — these technologies are often integrated into previously discrete products. For example, it is increasingly common to find Internet connectivity embedded into devices such as thermostats, security cameras, and garage door openers. The diffusion of new, patented technologies into these products may expose these products to claims of patent infringement.

More Companies Employing Patented Technologies – A growing number of companies, including non-technology companies, make, use and sell products or services that utilize patented inventions. For example, consumer banks now offer online and mobile banking and bill pay as a standard feature, which rely on numerous complex technologies that may be subject to many patents.
Specialized Appellate Court for Patent Cases – The United States Court of Appeals for the Federal Circuit was created in 1982 to serve as the central appellate venue for patent-related cases. We believe this centralization of patent-related appeals has resulted in a more uniform application of patent law. In addition, various federal district courts have adopted patent-specific rules of procedure to facilitate patent litigation. These factors have created a more attractive environment for patent assertions.
These developments have caused significant capital to flow to companies specifically formed to acquire and monetize patent assets.

Emergence and Growth of Non-practicing Entities ("NPEs")
NPEs do not create or sell products or services that "practice" the claims of their patented inventions, but instead monetize patents through sale, licensing agreements, or the pursuit of litigation settlements. Some NPEs obtain patents through their own research and development efforts, while others accumulate patents through acquisitions. NPEs have become a major factor in the patent market and an important source of liquidity for patent owners.

Operating companies can incur significant costs to defend themselves against patent assertions by NPEs. At a minimum, companies faced with an assertion letter typically respond to the assertion letter and evaluate the patents being asserted. If the assertion proceeds to litigation, costs grow substantially. Because NPEs generally do not create or sell their own products or services, they are not susceptible to counter-assertion, a common defensive strategy in patent disputes between operating companies.

We believe that the amount of capital raised by NPEs is currently in the billions of dollars. Some of the large awards and settlements received by NPEs have resulted in extensive media coverage, contributing to a significant influx of capital into the patent market. NPE activity has decreased appreciably in the United States over the past few years, partially due to Patent Trial and Appeal Board challenges, as well as court decisions like the Supreme Court's 2014 decision in Alice Corp. v. CLS Bank International. As a result, the risk that operating companies face from NPEs in some sectors has also decreased appreciably. However, as of December 31, 2017, more than 4,700 NPEs have been identified by RPX as active either in patent infringement litigation or patent transactions leading to patent litigation since 2005. In addition, many individual inventors and universities are also using litigation or threat of litigation to monetize patents. The threat of patent litigation brought by NPEs is also moving beyond the United States into jurisdictions such as Germany and China.

Discovery Services Market
Organizations across the world spend billions of dollars each year on the legal discovery process through internal discovery service resources or through outsourced options such as law firms or businesses that offer distinct discovery support services.

The proliferation of documents generated through electronic communications and office software products as well as increasing regulations and changes in discovery protocols around the world is accelerating growth in the discovery services. Additionally, we believe the evolution of other jurisdictions towards the United States discovery model will translate into increased growth in the international discovery services industry. We expect a majority of this expected growth to come from corporations as the buying decision for discovery services continues to shift toward the principal or litigant as opposed to external legal counsel.
Our Services and Benefits to Our Clients
Patent Risk Management Services
We have pioneered an approach to help operating companies mitigate patent risk and expense by serving as an intermediary through which they can participate more efficiently in the patent market. Clients that join our network and subscribe to our membership pay an annual subscription fee and gain access to our patent risk management services. The subscription fee is typically either based on a rate card that is calculated using a client’s revenue or operating income with adjustments for changes in the Consumer Price Index and other factors or a fixed fee that is risk-adjusted based on the client's patent risk profile. These fees remain generally in place over the termof a membership. By offering a predictable annual fee that does not change based on our patent asset acquisitions, we divorce the amount of fees charged from the value of our patent assets. We believe our pricing structure creates an alignment of interests with our clients, allowing us to be a trusted intermediary for operating companies in the patent market.

Defensive Patent Acquisition
The core of our patent risk management services is defensive patent acquisition, in which we acquire patents, licenses to patents, patent rights, and agreements for covenants not to sue, which we collectively refer to as "patent assets." These patent assets are being or may be asserted against our current and prospective clients. When we acquire patent assets, we generally provide to our clients non-exclusive sub-licenses to those patent assets. We acquire patent assets from multiple parties, including operating companies, individual inventors, NPEs, universities, and bankruptcy trustees. We also acquire patent assets in different contexts, including when they are made available for sale or license by their owners or to resolve threatened or pending litigation against our clients or prospective clients.

We have not asserted and will not assert our patents. We have never initiated patent infringement litigation, and our clients receive guarantees that we will never assert patents against them. We consider this guarantee to be of paramount importance in establishing trust with our clients. In addition, because we have minimal risk from infringement claims, we are able to engage in more transparent discussions regarding the value of patent assets with patent owners. Our ability to engage in transparent discussions with both operating companies and patent owners allows us to act as an effective intermediary between participants in the patent market. As a result, we provide a conduit through which value can flow between market participants at lower transaction costs than is typically the case when patents are monetized through litigation or the threat of litigation.

As a part of our patent risk management services, we provide extensive patent market intelligence and data to our clients. Clients can access this market intelligence and data through our proprietary web portal and through discussions with our client services team. This market intelligence and data helps our clients better understand past and potential patent acquisition transactions, relevant litigation activity, and key participants and trends in the patent market. In a market with limited publicly available data on pricing and terms of licenses and litigation settlement, we believe our data and market intelligence is a valuable resource for our clients and prospects.

Insurance
Our patent infringement litigation expense insurance service is designed to give businesses greater control of the unpredictable financial impact of patent litigation. We believe that our access to historical data on patent transactions, litigations, and settlements uniquely enables us to assess and price the insurance based on a company’s risk profile. We assume a portion of the underwriting risk on insurance policies that we issue on behalf of third party underwriters. The insurance product enables policyholders to better manage and mitigate the risk of patent litigation. Pricing is based on an actuarial model that calculates an individual client’s insurance premium based on its projected annual frequency (i.e., number of claims during the policy term) and severity (i.e., the expenses it might incur to resolve a claim).

Benefits to Our Patent Risk Management Clients
In general, operating companies join our network to reduce their risk of patent litigation and the expected costs associated with patent risk management. In exchange for an annual subscription fee, which in some instances has been less than the costs of a single patent assertion, our clients gain access to the following benefits:
Reduced Risk of Patent Litigation – Clients reduce their exposure to patent litigation because we continuously assess patent assets available for sale or license and acquire many that are being or may be asserted against our clients or potential clients. Our clients have no litigation risk related to the patents that we own.
Cost-Effective Licenses – Our annual subscription fee is typically based on a client’s historical financial results or a fixed fee which is risk-adjusted for the client's general patent risk profile, which provides predictability for us and our clients. We believe our approach is different than the pricing strategies of traditional patent licensing businesses, which generally negotiate license fees based on the perceived relevance of their various patent portfolios to each licensee.We believe our approach to pricing also provides clients with non-exclusive license rights to our large and growing portfolio of patent assets at a lower cost than they would have paid if these patent assets were owned by other entities.
Reduced Patent Risk Management Costs – Clients can reduce their ongoing patent risk management costs by supplementing their internal resources with our database of information and extensive transaction experience relating to the patent market. We actively monitor the patent market to understand the availability of patent assets for sale or license, the identity of the owners and licensors of these assets, the terms by which they may be available and the technologies to which these assets apply. We also track relevant litigation activity and identify key participants and trends in the patent market. As part of their subscription, our clients have access to this information through our proprietary web portal and through discussions with our client services team.


Discovery Services
Our managed services model helps our clients effectively minimize operational burden, risk, and the overall cost of the legal discovery process. Our technology allows us to host millions of documents for review across multiple geographies. We offer our clients any or all of the following services:
Data Collection and Forensics - We offer multiple collection platforms and techniques aimed at harvesting potentially relevant data in the most cost effective ways. We have trained internal experts and partners available to perform data collection in conformance with country-specific data protection laws.
Data Processing and Analytics - We offer advanced data filtering techniques and processing services using various sophisticated third-party software, data analytics, and technology assisted review.
Data Hosting - Clients have access to technology-enabled document review software.
Project Management - Internal subject matter experts trained in discovery procedures and protocols are available to assist clients with project setup and configuration, and to help clients navigate and utilize industry best practices. Our project management experts have a unique combination of legal acumen and technical expertise to deliver the most efficient services to our clients.
Production - We offer high volume data production capacity and printing, copying, and scanning services.
Document Review Services - We utilize a variable workforce model to manage and staff the activities required to review large document collections in legal matters. These tasks include sourcing qualified legal professionals for project-based work, developing appropriate review protocols and quality control procedures, and providing guidance to outside counsel throughout the various stages of the complex discovery process.

Information Technology
Our software and technology infrastructure allows us to provide secure, high-reliability capabilities to our clients such as high volume data intake, data hosting, and data review platforms. Our network infrastructure is a key component of our technology footprint since our review services offering is within our private hosted environment where we manage significant volumes of client data across thousands of client matters. Client matters may entail millions of documents, terabytes of data and complex structured data from databases as well as unstructured data from email archives. We operate data centers domestically and internationally that provide secure access to our software environment and client databases. Information security is critically important given the sensitive nature of the data provided by our clients.

Benefits to Our Discovery Services Clients
Corporations and law firms seek our discovery services to organize responsive data for various types of legal and compliance matters in a legally defensible manner, thereby reducing both litigation risk and cost. In exchange for our discovery services fees, our clients receive the following benefits:
Reduced Cost of Litigation – Clients reduce their litigation costs by using our technology-enabled services to eliminate redundant data and organize it in a manner that reduces the number of responsive documents that need to be reviewed by attorneys, which is typically the single largest cost of most legal matters. In addition, our technology allows the client to repurpose previously processed data from individual custodians that may be responsive to multiple matters, thereby compounding cost savings and administration time.
Increased Visibility into the Discovery Process – We use a managed service model to offer our proprietary discovery services management platform, which adds clarity, visibility, and efficiency to our clients' legal discovery process. Seamless integration with industry-leading third-party applications helps our clients focus on critical information early in the litigation life cycle through efficient access to important data.
Secure Hosting of Data – Our clients' electronic data is stored in a secure, monitored environment. We maintain strict security standards and procedures to protect our clients' sensitive, and often confidential, information.
Access to Support Services – Our global network of trained experts help our clients maximize their use of our software tools. We have experienced personnel in major markets across the country and internationally in order to provide localized support that is responsive to our clients' needs.

Our Strategy
Our mission is to reduce risk and cost for corporate legal departments through data-driven decision-making, technology, and market-based solutions. A significant part of that mission is to transform the patent market by establishing RPX as the essential intermediary between patent owners and operating companies and by providing complementary technology-focused discovery services. Our strategy includes the following:
Growing Our Client Network – We intend to grow our client network by developing relationships with companies that have experienced patent litigation, often initiated by NPEs, or the need for discovery services, and continuing to demonstrate the value of our services.
Acquiring Additional Patent Assets – We intend to continue to acquire patent assets that are being or may be asserted against current and prospective clients and to increase our role and expertise in the patent market. We believe our disciplined approach to valuing and acquiring patent assets will allow us to continue to deploy our capital in an efficient and effective manner to maximize the patent risk management benefits to our clients.
Focusing on Client Services – We intend to deliver the highest levels of service and support to our clients to build and maintain trusted relationships and high levels of client retention.
Developing Proprietary Technology Services for Our Clients – We intend to continue to enhance our proprietary web portal to provide our clients with the most current intelligence and data on patent acquisition opportunities, relevant litigation activity and key market participants and trends that affect their patent risk exposure. We also continually improve our discovery services to maximize throughput and improve analytical capabilities.
Syndicated Transactions – On certain occasions, clients ask us to acquire patent assets that we would not otherwise purchase using our capital (due to the size or limited applicability of the portfolio). In these instances, we facilitate syndicated transactions that include contributions from participating clients in addition to their annual subscription fees. Similar to other acquisitions, these syndicated deals are designed to efficiently share resources and collectively reduce litigation risk. Transaction participants may pay a fee to RPX for structuring, negotiating and executing the transactions.
Offering Patent Infringement Litigation Insurance – We offer insurance policies for businesses interested in management of their exposure to patent infringement claims.
Deterring Abusive Patent Assertion Practices - We believe we can improve the efficiency of the patent market, lower unnecessary costs, and deter abusive patent assertion practices by performing systematic, high quality prior art searches on asserted patents, challenging the validity of low quality patents at the United States Patent and Trademark Office, and performing other activities to improve patent quality.
Enhancing Our Capabilities Through Complementary Acquisitions We occasionally evaluate the potential acquisition of businesses and technologies in adjacent markets that can enhance our capabilities and offerings to our clients.
Expand Our International Operations We will continue to investigate expansionary efforts for our patent risk management and discovery services to allow us to help our current and future clients manage litigation risks and legal costs internationally.
Our Client Network
Patent Risk Management Client Network
We have built a network of clients that includes some of the world’s most prominent technology companies, as well as many smaller and emerging companies. As of December 31, 2017, we had more than 330 patent risk management clients, consisting of our patent risk management network members and insurance clients. We provide patent risk management services to approximately 450 companies, including those insured under policies sold to venture funds and industry trade associations.

We believe our patent risk management services are broadly applicable to companies that design, make or sell technology-based products and services as well as to companies that use technology in their businesses. Our clients are active in a broad range of industries including automotive, consumer electronics, personal computers, e-commerce, financial services, software, media content and distribution, mobile communications and handsets, networking and semiconductors.

Client Services
Our client services team identifies potential clients by prioritizing operating companies that have been subject to patent infringement claims initiated by NPEs. The membership team is responsible for educating potential clients on the benefits of our patent risk management services and explaining how these services mitigate patent risk and reduce

expense. After we have communicated our business model to a prospective client, we continue to work to develop a relationship of trust with the executives responsible for patent-related matters. We do this in part by providing information to each client on the overall patent market as well as specific updates on patent activity that affect their industry and company. We proactively monitor litigation activity and patent transactions that impact these prospective clients. In addition, we conduct a variety of marketing efforts to establish ourselves as a leading source of information in the patent market, including industry conferences and seminars, public relations, and industry research.

After a company has become a client, the relationship is also handled by our client services team. The client services team maintains frequent dialogue with senior executives of our clients so we can better understand their patent risk profiles. We also proactively monitor litigation and patent sales activity related to each of our clients to help us direct our patent asset acquisition efforts. Our continued success and our ability to retain clients depend on our clients perceiving risk from NPEs and on our ability to demonstrate that our patent risk management services reduce their costs in patent matters.

Our client services team also provides clients with patent market intelligence and updates on our patent asset acquisitions over the term of their memberships. We provide this information through direct discussions with our clients and also share information with them through our proprietary web portal. We believe our frequent interactions allow us to optimize our patent asset acquisition decisions, thus supporting our client retention efforts.

Patent Asset Portfolio and Patent Asset Acquisition
We acquire patent assets that are being or may be asserted against current or prospective clients. As of December 31, 2017, we had deployed approximately $2.4 billion of our capital and the capital of our clients to acquire patent assets. Of this amount, deployment of our capital totaled approximately $1.1 billion. Since inception, approximately three-fourths of our $1.1 billion patent acquisition capital has been deployed for the purchase of patent rights and the balance deployed for the purchase of patents. Acquisitions of patent rights generally benefit only those operating companies that are clients at the time of the acquisition, whereas acquisitions of patents may benefit both current and future clients. Our patent asset acquisition efforts have been broadly diversified across the following market sectors: automotive, consumer electronics, personal computers, e-commerce, financial services, software, media content and distribution, mobile communications and handsets, networking and semiconductors.

The substantial majority of our 440 acquisitions through December 31, 2017 involved patent assets that we believed were relevant to multiple clients and/or prospective clients and were funded with our own capital resources. We occasionally identify patent assets that cost more than we are prepared to spend of our own capital resources or that may be relevant only to a very small number of clients. In these circumstances, we may structure and coordinate a transaction in which certain of our clients contribute funds that are in addition to their subscription fees in order to acquire those patent assets. We refer to such transactions as syndicated acquisitions. These syndicated acquisitionsmay secure rights just for those clients who elect to participate in the transaction or, if we contribute capital, may secure rights for all of our clients.

We apply a disciplined and proprietary methodology to valuing patents that is based primarily on our judgment regarding the costs our clients might incur from potential assertions of those patents if we were not to acquire them. A number of factors are involved in our valuation methodology, including the degree to which patent claims may describe technologies incorporated in clients’ products or services, pricing expectations that we obtain from open market activities, the revenues our clients generate from products or services potentially affected by the patents, the extent to which the patents would be attractive to NPEs, and the legal quality of the patents and their likely validity. As part of our approach, we also consider the degree to which we have already acquired patent assets in similar market sectors that were being or may be asserted against each of our clients. We also closely monitor new case law and new legislation that can affect the underlying patent value.

Because each acquisition of a patent asset may create value for more than one client, we believe our acquisitions of patent assets create a network effect: expanding our portfolio of patent assets results in greater patent risk mitigation for our clients, which we believe leads to greater opportunities to retain and grow our membership base.

Our patent analysts, our patent acquisitions team, and our patent acquisitions approval committee employ a rigorous and disciplined approach to evaluating acquisition opportunities.

In situations where patents are already being asserted or litigated against our current or prospective clients, the evaluation process begins with a detailed review of the patents. Depending on the value of the transaction, the complexity of the evaluation process, the number of patent assets in the portfolio, and the quality of the information provided by the seller or plaintiff, the patent acquisition process can range from as short as several weeks to more than six months.

We believe our position as a leading acquirer of patent assets gives us extensive access and visibility into the patent market. We closely track patent assets that become available on the market and, as of December 31, 2017, we had reviewed more than 9,300 patent portfolios since our inception. We believe our position in the market gives us direct access to a diverse group of patent sources, including brokers, individuals, companies, universities and law firms, all of which are familiar with our approach and acquisition criteria. We believe this familiarity provides us early notice of patent portfolios that are entering the market.

Discovery Services Client Network
Historically, in-house corporate legal departments of major corporations and top-tier law firms have demonstrated the most significant need for our discovery services. We have key relationships with Fortune 500 and other large domestic and multinational corporations in a variety of industries including financial services, energy and utilities, healthcare and pharmaceuticals, technology, telecommunications, retailers, and others. We also provide services to Am Law 100 firms domestically, Magic Circle firms in the United Kingdom, and leading regional and specialty law firms domestically and internationally. As of December 31, 2017, we had over 1,000 discovery services clients.
Competition

Patent Risk Management
In our efforts to attract new clients and retain existing clients, our patent risk management services compete primarily against established patent risk management strategies within those companies. Companies employ a variety of other strategies to attempt to manage their patent risk, including internal buying or licensing programs, cross-licensing arrangements, patent-buying consortiums or other patent-buying pools and engaging legal counsel to defend against patent assertions. As a result, we spend considerable resources educating our existing and prospective clients on the potential benefits of our services and the value and cost savings they provide.

In addition to competing for new clients, we also compete to acquire patent assets. Our primary competitors in the market for patent assets are other entities that seek to accumulate patent assets, including NPEs such as Wi-LAN, Allied Security Trust, and PanOptis. We also face competition for patent assets from operating companies, including current or potential clients that seek to acquire patents or license patent assets in connection with new or existing product offerings.

We believe we compete favorably with other patent risk management services based on a number of factors:
our alignment of interest and strong relationships with our clients resulting from our pricing structure and guarantee never to assert our patent assets against our clients;
our ability to reduce the costs associated with patent market transactions by engaging in more transparent negotiations based on the economic value of patent assets rather than discussions involving litigation or the threat of litigation;
our ability to increase efficiency and expand our role in the patent market as our client network and capital available for patent asset acquisitions grows;
our access to data regarding our analysis of the patent market and patent litigation; and
our extensive patent market expertise, relationships, and transaction experience.

Discovery Services
The discovery services market is highly fragmented, extremely competitive, and continually changing as technology and the legal and regulatory environments evolve around the world. Our competitors include larger businesses that offer a distinct discovery service offering such as Epiq, KLDiscovery, Consilio, and FTI Consulting. We also compete with smaller regional discovery services businesses as well as discovery services practices inside large and mid-sized law firms and professional services firms. Competition is primarily based on quality of service, level of data security, geographic reach, technology innovation, and pricing. We believe we generally compete favorably with other discovery services in these factors.
Intellectual Property
We rely primarily on a combination of confidentiality, license and other contractual provisions and trademark, trade secret and copyright law to protect our proprietary intellectual property rights. Despite our efforts to protect our proprietary rights, unauthorized parties may attempt to copy or obtain and use our technology. We rely on an internal team as well as third-party vendors and advisors to assist with the maintenance and prosecution of the patent assets and applications that we acquire.

Employees
As of December 31, 2017, we had 300 employees. Of the total employees, 111 are engaged in discovery services operations, 85 in sales, marketing and corporate development, 53 in legal, finance, and administration, 26 in patent acquisition and research, and 25 in system development and information technology. Of these employees, approximately 85% were employed in the United States and approximately 15% were employed internationally. None of our employees is represented by a labor union, and we consider current employee relations to be good.
Corporate Information
We were incorporated in Delaware in July 2008. Our principal executive offices are located at One Market Plaza, Suite 1100, San Francisco, California 94105. Our telephone number is (866) 779-7641. Our website address is www.rpxcorp.com. The information on, or that can be accessed through, our website is not part of this Annual Report on Form 10-K.

RPX ® and Rational Patent ® are registered trademarks of RPX Corporation. Any other trademarks appearing in this Annual Report on Form 10-K are the property of their respective holders.

We have two operating segments: patent risk management and discovery services. A summary of our financial information by geographic location is found in Note 16, “Segment Reporting,” in the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report.

Available Information
Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as amended, are available free of charge on the Investor Relations section of our Web site at www.rpxcorp.com as soon as reasonably practicable after we file such material with the Securities and Exchange Commission (“SEC”). The public may read and copy any materials filed with the SEC at the SEC's Public Reference Room at 100 F Street, NE, Room 1580, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains a website that contains reports, proxy, and information statements, and other information regarding registrants that file electronically with the SEC at www.sec.gov. The other information posted on our website is not incorporated into this Annual Report on Form 10-K.

Item 1A.Risk Factors.
Investing in our common stock involves a high degree of risk. You should consider carefully the risks and uncertainties described below before making a decision to buy our common stock. If any of the following risks actually occur, our business, financial condition, results of operations or growth prospects could be harmed. In that case, the trading price of our common stock could decline and you could lose all or part of your investment in our common stock. The risks described below are not the only risks facing us. Risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition, operating results, and growth prospects.

Risks Related to Our Business and Industry
We may experience significant quarterly fluctuations in our operating results due to a number of factors, which make our future operating results difficult to predict and could cause our operating results to fall below expectations.
Due to our limited operating history, our evolving business model and the unpredictability of our emerging industry, certain of our operating results have fluctuated significantly in the past and may fluctuate significantly in the future. Many of the factors that cause these fluctuations are outside of our control. The amount we spend to acquire patent assets, the characteristics of the assets acquired and the timing of those acquisitions may result in significant quarterly fluctuations in our capital expenditures and our financial results, and the amount and timing of our membership sales may result in significant fluctuations in our cash flow on a quarterly basis. In addition, we do not believe that our rate of growth since inception is representative of anticipated future revenue growth, and we have experienced year-over-year declines in revenue in the most recent periods and may continue to experience year-over-year declines in the future. As a result, comparing our operating results on a period-to-period basis may not be meaningful. You should not rely on our past results as an indication of our future performance.

In addition to the factors described above and elsewhere in this Item 1A, other factors that may affect our operating results include:
changes in our subscription fee rates or changes in our own pricing and discounting policies or those of our competitors;
decreases in our clients’ and prospective clients’ costs of litigating patent infringement claims;
changes in the accounting treatment associated with how we recognize revenue under subscription agreements;
the emergence of commercially successful new technology sectors with exposure to patents; the availability of patent portfolios that apply to these products and services; and the aggressiveness of NPEs and other licensors in monetizing their portfolios;
our inability to effectively develop and implement new services that meet client requirements in a timely manner;
the addition or loss of discovery services clients and projects which are difficult to predict and may result in material changes in quarterly revenue and costs, and in particular a decrease in revenue during 2018;
non-renewals from existing clients for any reason;
changes in patent law and regulations and other legislation, as well as United States Patent and Trademark Office procedures or court rulings, that reduce the value of our services to our existing and potential clients;
our expansion into new international markets;
lower subscription fees from clients whose annual subscription fees decrease due to declining operating income or revenue of such clients, the effects of changes in foreign exchange rates, or decreased NPE risk;
changes in the accounting treatment associated with our acquisitions of patent assets and how we amortize those patent assets;
our inability to acquire patent assets that are being asserted or may be asserted against our clients due to lack of availability, unfavorable pricing terms or otherwise;
our lengthy and unpredictable membership sales cycle, including delays in potential clients’ decisions whether to subscribe to our patent risk management services;
our acquisition of patent assets with a shorter estimated useful life that increases our near-term patent asset amortization expense and decreases our earnings;
loss of clients, including through acquisitions or consolidations;
losses incurred as a result of claims made on insurance policies underwritten or assumed by us;

our inability to retain key personnel;
increases in operating expenses, including those attributable to additional headcount, or the costs of new business initiatives, and our acquisition of Inventus;
other matters related to our acquisition of Inventus and the expansion of our business into discovery services;
any significant changes in the competitive dynamics of our markets, including new competitors or substantial discounting of services that are viewed by our target markets as competitive to ours;
increases in the prices we need to pay to acquire patent assets;
gains or losses realized as a result of our sale of patents, including upon the exercise by any of our clients of their limited right to purchase certain of our patent assets for defensive purposes in the event of a patent infringement suit brought against such client by a third party; and
adverse economic conditions in the industries that we serve, particularly as they affect the intellectual property risk management and/or litigation budgets of our existing or potential clients.

If our operating results in a particular quarter do not meet the expectations of securities analysts or investors, our stock price could be substantially affected. In particular, if our operating results fall below expectations, our stock price could decline substantially.

The market for our patent risk management services is evolving, and if these services are not widely accepted or if demand for these services is not sustained, our operating results will be adversely affected.
We have derived substantially all of our revenue from the sale of memberships to our patent risk management services and we expect this will continue for the foreseeable future. As a result, widespread acceptance of these services is critical to our future success. The market for patent risk management services is evolving and it is uncertain whether these services will achieve and sustain high levels of demand and market acceptance. Our success will depend, to a substantial extent, on the willingness of companies of all sizes to purchase and renew memberships as a way to reduce their patent litigation costs. If companies do not perceive the cost-savings benefits of patent risk management services, then wide market adoption of our patent risk management services will not develop, or it may develop more slowly than we expect. Either scenario would adversely affect our operating results in a significant way. Factors that may negatively affect wide market acceptance of these services, as well as our ability to obtain new clients and renew existing clients, include:
reduced assertions from non-practicing entities ("NPEs") or decreased patent licensing fees owed to NPEs;
limitations on the ability of NPEs to bring patent claims or limitations on the potential damages recoverable from such claims;
reduced cost to our clients of defending patent assertion claims;
uncertainty about our ability to significantly reduce patent litigation costs for a particular company;
lack of perceived relevance and value in our existing patent asset portfolio by existing or potential clients;
concerns by existing or potential clients about our future ability to obtain rights to patent assets that are being or may be asserted against them;
reduced incentives to renew memberships if clients have vested into perpetual licenses in all patent assets that they believe are materially relevant to their businesses;
lack of sufficient interest by mid- and small-size companies in our patent risk management or insurance offerings;
lack of expansion of technology and patent risk to markets that previously have not incorporated, but are currently incorporating, technology into businesses;
reduced incentive for companies to become clients because we do not assert our patent assets in litigation;
concerns that we might change our current business model and assert our patent assets in litigation;
budgetary limitations for existing or potential clients; and
the belief that adequate coverage for the risks and expenses we attempt to reduce is available from alternative products or services.

The success of our business depends on clients renewing their patent risk subscription agreements, and we do not have an adequate operating history to predict the rate of membership renewals. Any significant decline in our membership renewals could harm our operating results.
Our patent risk services clients have no obligation to renew their subscriptions after the expiration of their initial membership period. We have limited historical data with respect to rates of subscription renewals, so we cannot

accurately predict renewal rates. As of December 31, 2017, the weighted-average term of our subscription agreements with our current clients since the inception of those agreements was 2.3 years. As our overall membership base grows, we expect our rate of client renewals to decline compared to our historical rate. Our clients may choose not to renew their memberships or, if they do renew, may choose to do so for shorter terms or seek a reduced subscription fee. Many of our subscription agreements provide for one-year renewal periods. As a result, as more of our clients are in renewal periods, the weighted-average term of our subscription agreements has decreased and may continue to decrease further. If our clients do not renew their subscriptions or renew for shorter terms or if we allow them to renew at reduced subscription fees, our revenue may decline and our business may be adversely affected.

Upon initial subscription, our clients receive a term license for the period of their membership to substantially all of the patent assets in our portfolio at the time of subscription. In addition, clients receive term licenses to substantially all of the patent assets we acquire during the period of their membership. Our subscription agreements also typically include a vesting provision that converts a client’s term licenses into perpetual licenses on a delayed, rolling basis as long as the company remains a client. Accordingly, clients who continue to subscribe to our services receive perpetual licenses to an increasing number of our patent assets over time. If we are unable to adequately show clients that we are continuing to obtain additional patent assets that are being or may be asserted against them, clients may choose not to renew their subscriptions once they have vested into a perpetual license to all patent assets they believe are materially relevant to their businesses.

If we are unable to enhance our current services or to develop or acquire new services to provide additional value to our clients and potential clients, our business may be harmed.
In order to attract new clients and retain existing clients, we need to enhance and improve our existing service offering and introduce new services that meet the needs of our clients. We have in the past, and may in the future, seek to acquire or invest in businesses, products or technologies that we believe could complement or expand our services, enhance our technical capabilities or otherwise offer growth opportunities.

The development and implementation of new services will continue to require substantial time and resources, as well as require us to operate businesses that would be new to our organization. These or any other new services may not be introduced in a timely manner or at all. If we do introduce these or any other services, we may be unable to implement such services in a cost-effective manner, achieve wide market acceptance, meet client expectations or generate revenue sufficient to recoup the cost of developing such services. Any new services we introduce may expose us to additional laws, regulations and risks. If we are unable to develop these or other services successfully and enhance our existing services to meet client requirements or expectations, we may not be able to attract or retain clients, and our business may be harmed.

Our limited operating history makes it difficult to evaluate our current business and future prospects, and potential clients may have concerns regarding the effectiveness of our business model in the future. If companies do not continue to subscribe to our services, our business and operating results will be adversely affected.
We acquired our first patent assets in September 2008, sold our first membership in October 2008, and sold our first insurance policy in August 2012. In addition, we acquired Inventus and its legal discovery services business in January 2016. The legal discovery services business is a relatively new business for us. Therefore, we have not only a limited operating history, but also a limited track record in executing our business model. Our future success depends on acceptance of our services by companies we target to become clients. Our efforts to sell our products to new and existing clients may not continue to be successful. We evaluate our business model from time to time in order to address the evolving needs of our clients and prospective clients, particularly in an industry that continues to develop and change. Our limited operating history may also make it difficult to evaluate our current business and future prospects. We have encountered and will continue to encounter risks and difficulties frequently experienced by companies in rapidly changing industries. If we do not manage these risks successfully, our business and operating results will be adversely affected.

If the market for our services is not sustained, or if competitors introduce new solutions that compete with our services, we may be unable to renew our memberships, sell insurance policies or attract new clients at favorable prices based on the same pricing model we have historically used. In the future, it is possible that competitive dynamics in our market may require us to change our pricing model, reduce our subscription fee rates, or consider adding new pricing programs or discounts, which would likely harm our operating results. In order to attract new clients and retain existing clients, in certain cases we have previously offered, and may in the future offer, discounts or other contractual incentives to clients.


Our subscription fees from clients may decrease due to factors outside of our control. Any reduction in subscription fees could harm our business and operating results.
Subscription fees are typically reset annually based on a client’s reported revenue and operating income measured as of the end of its last fiscal year or reflect a fixed fee that is risk-adjusted for the client's patent risk profile. If a client pays a subscription fee based on our rate card and is not already paying the minimum due under that rate card experiences reduced operating results, its subscription fee for the next year will decline. As a result, our revenue stream may be affected by conditions outside of our control that impact the operating results of our clients.

Our rate cards generally provide that our subscription fee as a percentage of the client’s operating income decreases as their operating income goes up. In addition, many of our clients’ rate cards are subject to an annual cap. As a result, if one of our clients acquires another client, our future revenue could be reduced as a result of the application of our rate card to the combined entity rather than to each entity separately. Any reduction in subscription fees could harm our business and operating results.

Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers ("ASC 606") will have a material effect on our consolidated financial statements and may increase the variability of the revenue recognized from our patent risk management fees from period to period and may reduce the amount of revenue we recognize.
Through December 31, 2017, we recognized revenue in accordance with FASB ASC 605, Revenue Recognition (“ASC 605”) and related authoritative guidance. Effective January 1, 2018, we began recognizing revenue in accordance with ASC 606, which is explained further under the heading "Revenue from Contracts with Customers" in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report. Our patent risk management revenue will be materially impacted by the adoption of this new standard due to the identification of multiple performance obligations from our patent risk management membership subscription and the timing and amount of recognition for these separable performance obligations. Specifically, we recognize separate performance obligations under the new standard for certain discrete patent assets transferred to our membership clients (referred to as a "catalyst license") as well as for access to the patent portfolio clients obtain when becoming a member or renewing membership (referred to as a "portfolio access license"). The revenue generated from these additional performance obligations will be recognized at a point in time under ASC 606 as licensing revenue whereas under ASC 605, we generally recognized these membership fees ratably over the term of the customer contract as subscription revenue. Additionally, we will determine whether revenue should be treated on a gross or net basis for these additional separable performance obligations which may result in revenue which is treated on a gross basis under ASC 605 to be treated on a net basis under ASC 606 which reduces our basis in our patent assets. Therefore, the adoption of ASC 606 will increase the variability of revenue recognized from our patent risk management services from period to period as well as reduce revenue and patent assets previously treated on a gross basis under ASC 605 that will be treated on a net basis under ASC 606.

We receive a significant amount of our revenues from a limited number of clients, and if we are not able to obtain membership renewals or continued engagements from these clients, our revenue may decrease substantially.
We receive a significant amount of our revenue from a limited number of clients. For example, during the year ended December 31, 2017, our 10 highest revenue-generating clients accounted for approximately 30% of our total revenue. We expect that a significant portion of our revenue will continue to come from a relatively small number of clients for the foreseeable future. If any of these clients chooses not to remain a client, or if our fees from one of these clients decline, our revenue may correspondingly decrease and our operating results may be adversely affected.

Our membership sales cycles can be long and unpredictable, and our membership sales efforts require considerable time and expense. As a result, our membership sales are difficult to predict and will vary substantially from quarter to quarter, which may cause our cash flow to fluctuate significantly.
Because we operate in a relatively new and unproven market, our membership sales efforts involve educating potential clients about the benefit of our services, including potential cost savings to a company. Potential clients typically undergo a lengthy decision-making process that has, in the past, generally resulted in a lengthy and unpredictable sales cycle. Mid- and small-size companies are generally subject to less patent litigation and we expect even lengthier sales cycles for such companies. We spend substantial time, effort and resources in our membership sales efforts without any assurance that our efforts will produce any membership sales. In addition, subscriptions are frequently subject to budget constraints, multiple approvals, and unplanned administrative, processing and other delays. As a result of these factors, our membership sales in any period are difficult to predict and will likely vary substantially between periods, which may cause our cash flow to fluctuate significantly between periods.


We recently announced a process to explore and evaluate strategic alternatives to maximize shareholder value, which may result in the use of a significant amount of our management resources or significant costs, and we may not be able to achieve any particular outcome or to fully realize the potential benefit of such alternatives.
In February 2018, we announced that the Board of Directors is conducting a process to explore and evaluate strategic alternatives to maximize shareholder value. The Board has not made any decisions related to any strategic alternatives at this time. No assurances can be made with regard to the timeline for completion of the strategic review, or whether the review will result in any particular outcome. This process may divert the attention of management and cause us to incur various expenses, whether or not any particular outcome is achieved.

We acquired Inventus in January 2016, and may acquire or invest in other companies or technologies, which could divert our management’s attention, result in additional dilution to our stockholders, and otherwise disrupt our operations and harm our operating results. We may also be unable to realize the expected benefits and synergies of any acquisitions.
We have in the past and may in the future seek to acquire or invest in businesses, products or technologies that we believe could complement or expand our services, enhance our technical capabilities or otherwise offer growth opportunities. We may not be able to integrate the acquired personnel, operations, and technologies successfully or effectively manage the combined business. The pursuit of potential acquisitions may divert the attention of management and cause us to incur various expenses in identifying, investigating and pursuing suitable acquisitions, whether or not they are consummated.

In addition, we may not achieve the anticipated benefits from the Inventus or another acquisition due to a number of factors, including:

difficulties in integrating operations, technologies, services and personnel;
the need to integrate the operations, systems (including accounting, management, information, human resources and other administrative systems), technologies, products, and personnel of each acquired company, which is an inherently risky and potentially lengthy and costly process;
the need to implement or improve controls, procedures, and policies appropriate for a public company at companies that prior to our acquisition may have lacked such controls, procedures, and policies or whose controls, procedures, and policies did not meet applicable legal and other standards;
our dependence on the accounting, financial reporting, operating metrics and similar systems, controls and processes of an acquired business, and the risk that errors or irregularities in those systems, controls, and processes will lead to errors in our consolidated financial statements or make it more difficult to manage the acquired business;
the potential loss of key customers, vendors, and other business partners of the companies we acquire following the announcement of our transaction plans;
the inefficiencies and lack of control that may result if such integration is delayed or not implemented, and unforeseen difficulties and expenditures that may arise as a result;
derivative lawsuits resulting from the acquisition;
risks associated with our expansion into new international markets;
unanticipated costs or liabilities associated with the acquisition;
incurrence of acquisition-related costs;
incurrence of acquisition-related charges; for example, in connection with the preparation of our financial results for the fourth quarter of 2017, we recorded an impairment loss of $89.0 million relating to our discovery services goodwill;
diversion of management’s attention from other business concerns;
potential loss of key employees;
additional legal, financial and accounting challenges and complexities in areas such as tax planning and cash management;
use of resources that are needed in other parts of our business; and
use of substantial portions of our available cash to consummate the acquisition.

Future acquisitions could also result in dilutive issuances of equity securities or the incurrence of debt, which could adversely affect our operating results. In addition, if an acquired business fails to meet our expectations, our operating results, business and financial condition may suffer.

If the Inventus security measures are breached, our discovery services may be perceived as not being secure, clients may curtail or stop using our discovery services, and we may incur significant legal and financial exposure.  
We process, store, and transmit large amounts of data, including personal information, for our discovery services clients, and a material security breach would expose us to a risk of loss of this information, litigation, and potential liability.  Because the techniques used to obtain unauthorized access, disable or degrade service, or sabotage systems change frequently and often are not recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures.

Our discovery services engagement agreements, including those related to our largest clients, can be terminated by our clients with little or no notice and without penalty, which may cause our operating results to be unpredictable.
Our discovery services clients typically retain us on an engagement-by-engagement basis, rather than under fixed-term contracts; the volume of work performed for any particular client is likely to vary from month to month and year to year, and a major client in one fiscal period may not require or may decide not to use our services in any subsequent fiscal period. Almost all of our discovery services engagement agreements can be terminated by our clients with little or no notice and without penalty. For example, in engagements related to litigation, if the litigation were to be settled, our engagement for those services would no longer be necessary and, therefore, would be terminated. When discovery services engagements are terminated or reduced, we lose the associated future revenues, and we may not be able to recover associated costs or redeploy the affected employees in a timely manner to minimize the negative impact. In addition, our discovery services clients’ ability to terminate engagements with little or no notice and without penalty makes it difficult to predict our operating results for the discovery services segment in any particular fiscal period.

We are dependent on our management team, and the loss of any key member of this team may prevent us from implementing our business plan, which could harm our future growth and operating results.
Our success depends largely upon the continued services of our executive officers and other key personnel. We do not have employment agreements with any of our executive officers or other key management personnel that require them to remain our employees. Therefore, they could terminate their employment with us at any time without penalty. In 2017, a number of our key executive officers left RPX, including our previous chief executive officer, our previous executive vice president, our previous chief financial officer who had subsequently served in another executive role, the previous chief executive officer of Inventus, and our previous chief revenue officer. We do not maintain key person life insurance policies on any of our employees. The loss of one or more of our key employees, including the recent loss of our previous chief executive officer and our other executive officers, and the resulting turnover in our executive management team could seriously harm our business.

Because we generally recognized revenue from membership subscriptions over the term of the membership under ASC 605 through December 31, 2017, upturns or downturns in membership sales may not be immediately reflected in our operating results. As a result, our future operating results may be difficult to predict.
Through December 31, 2017, under ASC 605, we generally recognized subscription fees received from clients ratably over the period of time to which those fees applied. Most of our clients are invoiced annually, and thus their fees were recognized as revenue over the course of 12 months under ASC 605. Consequently, a decline in new or renewed subscriptions in any one quarter will not be fully reflected in that quarter’s revenue and will negatively affect our revenue in future quarters. In addition, we may be unable to adjust our cost structure quickly to reflect this reduced revenue. Accordingly, the effect of either significant downturns in membership sales or rapid market acceptance of our services may not be fully reflected in our results of operations in the period in which such events occur. Our membership subscription model also makes it difficult for us to rapidly increase our revenue through additional sales in any period, as subscription fees from new clients must generally be recognized over the applicable membership term. Effective January 1, 2018, we began recognizing subscription fees under ASC 606 which significantly impacts the timing of revenue recognized as compared to ASC 605 as discussed above.

Our inability to identify, attract, train, integrate and retain highly qualified employees would harm our business.
Our future success depends on our ability to identify, attract, train, integrate and retain highly qualified technical, sales and marketing, managerial and administrative personnel. In particular, our ability to increase our revenue is dependent on our ability to hire personnel who can identify and acquire valuable patent assets and attract new clients. Competition for highly skilled sales, business development and technical individuals is intense, and we continue to face difficulty identifying and hiring qualified personnel in some areas of our business. We may not be able to hire and retain such personnel at compensation levels consistent with our existing compensation and salary structure. Many of the

companies with which we compete for hiring experienced employees have greater resources than we have. If we fail to identify, attract, train, integrate and retain highly qualified and motivated personnel, our reputation could suffer, and our business, financial condition and results of operations could be adversely affected.

If we are unable either to identify patent assets that are being asserted or that could be asserted against existing and potential clients or to obtain such assets at prices that are economically supportable within our business model, we may not be able to attract or retain sufficient clients and our operating results would be harmed.
Our ability to attract new clients and renew the subscription agreements of existing clients depends on our ability to identify and acquire patent assets that are being asserted or that could be asserted against our existing or potential clients. There is no guarantee that we will be able to adequately identify those types of patent assets on an ongoing basis and, even if identified, that we will be able to acquire rights to those patent assets on terms that are favorable to us, or at all. As new technological advances occur, some or all of the patent assets we have acquired may become less valuable or obsolete before we have had the opportunity to obtain significant value from those assets.

Our approach to acquiring patent assets generally involves acquiring ownership or a license at a fixed price. Other companies, such as NPEs, often offer contingent payments to sellers of patents that may provide the seller the opportunity to receive greater amounts in the future for the sale of its patents as compared to the fixed price we generally pay. As a result, we may not be able to compete effectively for the acquisition of certain patent assets.

If clients do not perceive that the patent assets we acquire are relevant to their businesses, we will have difficulty attracting new clients and retaining existing clients, and our operating results will be harmed. Similarly, if clients are not satisfied with the amount of capital we deploy to acquire patent assets, they may choose not to renew their subscriptions. These risks are greater if we elect to invest a significant amount of our capital in only a few acquisitions of patent assets.

We rely on various actuarial models in pricing our insurance product and estimating the frequency and severity of related loss events, but actual results could differ materially from the model outputs. Incurring losses that exceed our predictions could adversely affect our financial condition and results of operations.
We employ various predictive modeling, stochastic modeling and/or actuarial techniques to analyze and estimate losses and the risks associated with insurance policies that we underwrite or reinsure. We use the modeled outputs and related analyses to assist us in making underwriting, pricing and reinsurance decisions. The modeled outputs and related analyses are subject to numerous assumptions, uncertainties and the inherent limitations of any statistical analysis. Consequently, modeled results may differ materially from our actual experience. If, based upon these models or otherwise, we under price our products or underestimate the frequency and/or severity of loss events, our results of operations or financial condition may be adversely affected, which could have a material adverse effect on our results of operations. If, based upon these models or otherwise, we over price our products or overestimate the risks we are exposed to, new business growth and retention of our existing business may be adversely affected.

We have invested management time and resources into developing products designed to provide insurance against patent infringement claims. We have limited prior experience in designing or providing insurance products. If we are not successful in selling a significant amount of these insurance products, we will not realize the anticipated benefit of these investments, which could have an adverse effect on our growth prospects, and our business may be harmed.
We have invested management time and financial resources in the development of products designed to provide insurance against some of the costs resulting from patent claims. We are providing capital to develop and operate this business. We have limited prior experience in designing insurance products, operating an insurance business, attracting policyholders or establishing the pricing or terms of insurance policies and selling insurance policies in combination with membership subscriptions. We cannot assure you that our patent insurance products will appeal to a sufficient number of our existing clients or attract enough new clients to build a sustainable insurance business. If we are unsuccessful in managing this business, we may not realize the anticipated benefits of our investments of capital and management attention, which could have an adverse effect on our financial performance and growth prospects and our business may be harmed.

New legislation, regulations or court rulings related to enforcing patents could reduce the value of our services to clients or potential clients and harm our business and operating results.
If Congress, the U.S. Patent and Trademark Office or courts implement additional legislation, regulations or rulings that impact the patent enforcement process or the rights of patent holders, these changes could negatively affect the operating results and business model for NPEs. This, in turn, could reduce the value of our services to our current and potential clients. For example, limitations on the ability to bring patent enforcement claims, limitations on potential liability

for patent infringement, lower evidentiary standards for invalidating patents, reductions in the cost to resolve patent disputes and other similar developments could negatively affect an NPE’s ability to assert its patent rights successfully, decrease the revenue associated with asserting or licensing an NPE’s patent rights and increase the cost or risk of bringing patent enforcement actions. As a result, assertions and the threat of assertions by NPEs may decrease. If this occurs, companies may seek to resolve patent claims on an individual basis and be less willing to subscribe to our services or renew their memberships. Furthermore, even if companies are interested in subscribing to our services or maintaining their memberships, companies may be unwilling to pay the subscription fees that we propose. Any of these events could result in a material adverse effect on our business and operating results.

In addition, future laws and regulations, or judicial interpretations thereof, could affect our discovery services clients and thus indirectly adversely affect our business. For example, changes to the Federal Rules of Civil Procedure regarding discovery of "electronically stored information" could result in a decreased need for discovery services. Any of these events could result in a material adverse effect on our business and operating results.

Releases of new software products or upgrades to our existing software products or licensed third-party software may have undetected errors, or may not operate as intended or achieve our client's desired objectives, which could cause litigation claims against us, damage to our reputation, or loss of business.
Certain of our discovery services utilize software developed by us or third parties for the needs of our clients. Complex software products, such as those we utilize, can contain undetected errors when first introduced or as new versions are released, or may fail to operate as intended or achieve the client’s desired objectives. Any introduction of new software products or upgrade to existing software products has a risk of undetected errors. These undetected errors may be discovered only after a product has been installed and used either in our internal processing or by our clients. Likewise, the software products we acquire in business acquisitions have a risk of undetected errors.  Any undetected errors, difficulties in installing and maintaining our software products or upgrade releases, or the failure to achieve the client's desired objectives, may result in a delay or loss of revenue, diversion of development resources, damage to our reputation, the loss of that client, loss of future business, increased service costs, potential litigation claims against us, or impaired market acceptance of our products.

We may not be able to compete effectively against others in our patent risk management or legal discovery services businesses. Any failure to compete effectively could harm our business and results of operations.
In our efforts to attract new clients and retain existing clients, we compete primarily against established patent risk management strategies employed by those companies. Companies can choose from a variety of other strategies to attempt to manage their patent risk, including internal buying or licensing programs, cross-licensing arrangements, patent-buying consortiums or other patent-buying pools and engaging legal counsel to defend against patent assertions. As a result, we spend considerable resources educating our existing and prospective clients on the potential benefits of our services and the value and cost savings they provide.

In addition to competing for new clients, we also compete to acquire patent assets. Our primary competitors in the market for patent assets are varied and include other entities that seek to accumulate patent assets, including NPEs such as Wi-LAN, Allied Security Trust, and PanOptis. In addition, many NPEs that compete with us to acquire patent assets have complicated corporate structures that include a large number of subsidiaries, so it is difficult for us to know how much capital the related entities have available to acquire patent assets. We also face competition for patent assets from operating companies, including operating companies that are current or prospective clients. Many of these operating companies have significantly greater financial resources than we have and can acquire patent assets at prices that we may not be able to pay.

In addition, the discovery services market is highly fragmented, extremely competitive, and continually changing as technology and the legal and regulatory environments evolve around the world. Our competitors include larger businesses that offer a distinct discovery service offering such as Epiq, KLDiscovery, Consilio, and FTI Consulting. We also compete with smaller regional discovery services businesses as well as discovery services practices inside large and mid-sized law firms and professional services firms. Many of our competitors in this market have a greater national and international presence, as well as have a significantly greater number of personnel, financial, technical, and marketing resources. In addition, these competitors may generate greater revenues and have greater name recognition than we do.

We expect to face more direct competition in the future in both our patent risk management business and legal discovery services business from other established and emerging companies. In addition, as a relatively new company in the patent risk management market and legal discovery services market, we have limited insight into trends that may develop and affect our businesses. As a result, we may make errors in predicting and reacting to relevant business trends, making us unable to compete effectively against others.

Our current or potential competitors in both our patent risk management business and legal discovery services businesses vary widely in size and in the scope and breadth of the products and services they offer. Many of our competitors have substantially greater financial resources and a larger client base and sales and marketing teams. The competition we face now and in the future could result in increased pricing pressure, reduced margins, increased sales and marketing expenses and a failure to increase, or the loss of, market share. We may not be able to maintain or improve our competitive position against our current or future competitors, and our failure to do so could seriously harm our business.

Certain of our acquisitions of patent assets are time consuming, complex and costly, which could adversely affect our operating results.
Certain of our acquisitions of patent assets are time consuming, complex and costly to consummate. We utilize many different transaction structures in our acquisitions and the terms of the acquisition agreements tend to be very heavily negotiated. As a result, we may incur significant operating expenses during the negotiations even when the acquisition is ultimately not consummated. Even if we successfully acquire particular patent assets, there is no guarantee that we will generate sufficient revenue related to those patent assets to offset the acquisition costs. While we conduct confirmatory due diligence on the patent assets we are considering for acquisition, we may acquire patent assets from a seller who does not have proper title to those assets. In those cases, we may be required to spend significant resources to defend our interests in the patent assets and, if we are not successful, our acquisition may be invalid, in which case we could lose part or all of our investment in the assets.

We occasionally identify patent assets that cost more than we are prepared to spend of our own capital resources or that may be relevant only to a very small number of clients. In these circumstances, we may structure and coordinate a transaction in which certain of our clients contribute funds that are in addition to their subscription fees in order to acquire those patent assets. These syndicated acquisitions are complex and can be large and highly visible. We may incur significant costs to organize and negotiate a syndicated acquisition that does not ultimately result in an acquisition of any patent assets. These higher costs could adversely affect our operating results. Our roles in structuring the acquisition and managing the acquisition entity, if one is used, may expose us to financial and reputational risks.

If we are not perceived as a trusted patent risk manager, our ability to maintain wide market acceptance will be harmed, and our operating results could be adversely affected.
Our reputation, which depends on earning and maintaining the trust of existing and potential clients, is critical to our business. Our reputation is vulnerable to many threats that can be difficult or impossible to control and costly or impossible to remediate. For our business to be successful, we must continue to educate potential clients about our role as a trusted intermediary in the patent market. If our reputation is harmed, we may have more difficulty attracting new clients and retaining existing clients, and our operating results could be adversely affected.

The unavailability of third-party technology could adversely impact our revenue and results of operations.
We license certain discovery-related software from third parties and incorporate such software into our discovery services.Most of our third-party software license contracts expire within one year and may be renewed only by mutual consent. There is no assurance that we will be able to renew these contracts as they expire or that such renewals will be on the same or substantially similar terms or on conditions that are commercially reasonable to us.  If we fail to renew these contracts as they expire, our discovery services offerings may be reduced. In addition, our third-party software licenses are non-exclusive, and therefore, our competitors may obtain the right to license certain of the technology covered by these agreements to compete directly with us.  In certain situations, our third party software licensors are themselves also our competitors in the discovery services market.

If certain of our third-party licensors were to change product offerings, cease actively supporting the technologies, fail to update and enhance the technologies to keep pace with changing industry standards, encounter technical difficulties in the continuing development of these technologies, significantly increase prices, terminate our licenses, suffer significant capacity or supply chain constraints or suffer significant disruptions, we would need to seek alternative suppliers and incur additional internal or external development costs to ensure continued performance of our discovery services. Such alternatives may not be available on attractive terms, or may not be as widely accepted or as effective as the current licenses provided by our existing suppliers. If the cost of licensing or maintaining the third party intellectual property significantly increases, our operating earnings could significantly decrease. In addition, interruption in functionality of our services and products as a result of changes in or with third party licensors could adversely affect our commitments to clients, future sales, and negatively affect our revenue and operating earnings.


Interruptions or delays in service at the data centers we utilize for discovery services could impair the delivery of our service and harm our business.
We provide services through computer hardware that is located in co-location data centers operated by unrelated third parties. Although we do own that computer hardware, we do not control the operation of these colocation facilities, which increases our vulnerability to problems with the services they provide.  The data centers are subject to damage or interruption from earthquakes, floods, fires, power loss, terrorist attacks, telecommunications failures and similar events. These facilities are also subject to break-ins, sabotage, intentional acts of vandalism and similar misconduct.  The occurrence of any of these events or other unanticipated problems at a facility could result in interruptions in certain of our services, although we have established backup recovery data centers to try to minimize this risk. In addition, the failure by our vendor to provide our required data communications capacity could result in poor service or interruptions in our service. Any damage to, or failure of, our systems or services could reduce our revenue, cause us to issue credits or pay penalties, cause clients to terminate their agreements with us and adversely affect our ability to secure business in the future. Our business will be harmed if our clients and potential clients believe our services are unreliable.

If the value of our goodwill or intangible assets become materially impaired, we may be required to record a significant charge to earnings. 
We test goodwill for impairment at least annually. If such goodwill is deemed to be impaired, an impairment loss equal to the amount by which the carrying amount exceeds the fair value of the assets would be recognized. We may be required to record a significant charge in our financial statements during the period in which any impairment of our goodwill is determined, which would negatively affect our results of operations. For example, in connection with the preparation of our financial results for the fourth quarter of 2017, we concluded that impairment losses of $94.1 million would be recorded in the financial information of the fourth quarter of the fiscal year ended December 31, 2017, $89.0 million of which relates to goodwill in our discovery services segment and the remaining impairment is associated with our cost method investments in our patent risk management segment.

Our business model requires estimates and judgments by our management. Our estimates and judgments are subject to changes that could adversely affect our operating results.
Our patent risk management business model is relatively new and therefore our accounting and tax treatment has limited precedent. The determination of patent asset amortization expense for financial and income tax reporting requires estimates and judgments on the part of management. Some of our patent asset acquisitions are complex, requiring additional estimates and judgments on the part of our management. From time to time, we evaluate our estimates and judgments; however, such estimates and judgments are, by their nature, subject to risks, uncertainties and assumptions, and factors may arise that lead us to change our estimates or judgments. If this or any other changes occur, our operating results may be adversely affected. Furthermore, if the accounting or tax treatment is challenged, we may be required to spend considerable time and expense defending our position and we may be unable to successfully defend our accounting or tax treatment, any of which could adversely affect our business and operating results.

If we fail to manage the risks associated with operating an insurance business, our results of operations and financial condition may be adversely affected.
In August 2012, we began to offer insurance products for patent claims, and therefore face risks associated with the operation of an insurance business. There are many estimates and forecasts involved in predicting underwriting and reinsurance risk and setting premiums, many of which are subject to substantial uncertainty and which could cause our expenses and earnings to vary significantly from quarter to quarter. If we do not estimate our underwriting and reinsurance risks and set our premiums successfully, we may incur larger losses on our policies than we expect, which could have an adverse effect on our results of operations and financial condition. Under accounting principles generally accepted in the United States of America, while premiums earned from our insurance policies are recognized ratably, losses are recognized as incurred. This will increase the variability of our operating results until such time as our insurance business operates at scale. Furthermore, the insurance market is highly regulated, so operation of an insurance business exposes us to additional laws and regulations. Compliance with such laws and regulations may be costly, which could affect our results of operations.

We may become involved in patent or other litigation proceedings related to our clients. Our involvement could cause us to expend significant resources. It could also require us to disclose information related to our clients, which could cause such clients not to renew their subscriptions with us.
The patent market is heavily impacted by litigation. As a result, we may be required, by subpoena or otherwise, to participate in patent or other litigation proceedings related to our clients. Our participation in any such proceedings could require us to expend significant resources and could also be perceived as adverse to the interests of our clients or potential clients if we are required to disclose any information about our clients that we have gathered in the course of

their memberships. These additional expenditures and potential disclosures could make it more difficult for us to attract new clients and retain existing clients, and our results of operations could be harmed. We may incur significant costs in defending claims made against us and the result may not be favorable. An unfavorable outcome of any claim could result in proliferation of similar claims against us. The expense and disclosure associated with our involvement in litigation could have an adverse effect on our business, prospects, financial condition, operating results and cash flows.

Interpretations of current laws and the passage of future laws could harm our business and operating results.
Because of our presence in an emerging industry, the application to us of existing United States and foreign laws is unclear. Many laws do not contemplate or address the specific issues associated with our patent risk management services or other products and services we may provide in the future. It is possible that courts or other governmental authorities will interpret existing laws regulating risk management and insurance, competition and antitrust practices, taxation, the practice of law and patent usage and transfers in a manner that is inconsistent with our business practices. Our business, prospects, financial condition and results of operations may be harmed if our operations are found to be in violation of any existing laws or any other governmental regulations that may apply to us. Additionally, existing laws and regulations may restrict our ability to deliver services to our clients, limit our ability to grow and cause us to incur significant expenses in order to comply with such laws and regulations. Even if our business practices are ultimately not affected, we may incur significant cost to defend our actions, incur negative publicity and suffer substantial diversion of management time and effort. This could have a material adverse effect on our business, prospects, financial condition and results of operations.

Additionally, we face risks from laws that could be passed or changed in the future, including in the United Kingdom as a result of Brexit. Since a significant portion of the regulatory framework in the United Kingdom is derived from EU directives and regulations, Brexit could materially affect the regulatory regime in the United Kingdom. Changes in laws and regulations regarding data protection, privacy, network security, or encryption may affect our discovery services. It is impossible to determine the extent of the impact of any new laws, regulations or initiatives that may be proposed, or whether any of the proposals will become law. Compliance with any new or existing laws or regulations could be difficult and expensive, affect the manner in which we conduct our business and negatively impact our business, prospects, financial condition and results of operations.

Any failure to maintain or protect our patent assets or other intellectual property rights could impair our ability to attract or retain clients and could harm our business and operating results.
Our business is dependent on our ability to acquire patent assets that are valuable to our existing and potential clients. Following the acquisition of patent assets, we expend significant time and resources to maintain the effectiveness of those assets by paying maintenance fees and making filings with the United States Patent and Trademark Office. In some cases, the patent assets we acquire include patent applications which require us to invest resources to prosecute the applications with the United States Patent and Trademark Office. If we fail to maintain or prosecute our patent assets properly, the value of those assets to our clients would be reduced or eliminated, and our business may be harmed.

If we fail to develop widespread brand awareness cost-effectively, we may not attract new clients and our business and operating results may suffer.
We believe that developing and maintaining widespread awareness of our brand in a cost-effective manner is critical to achieving widespread acceptance of our services and is an important element in attracting new clients. Furthermore, we believe that the importance of brand recognition will increase as competition in our market develops. Brand promotion activities may not generate client awareness or yield increased revenue, and even if they do, any increased revenue may not offset the expenses we incurred in building our brand. If we fail to promote and maintain our brand successfully, or if we incur substantial expenses in an unsuccessful attempt to promote and maintain our brand, we may fail to attract or retain clients to the extent necessary to realize a sufficient return on our brand-building efforts.

If we fail to maintain proper and effective internal controls, our ability to produce accurate financial statements could be impaired, which could adversely affect our operating results, our ability to operate our business and investors’ views of us.
Ensuring that we have internal financial and accounting controls and procedures adequate to produce accurate financial statements on a timely basis is a costly and time-consuming effort that needs to be re-evaluated frequently. We have in the past discovered, and may in the future discover, areas of our internal financial and accounting controls and procedures that need improvement. The Sarbanes-Oxley Act of 2002 requires, among other things, that we maintain effective internal control over financial reporting and disclosure controls and procedures. In particular, we must perform system and process evaluation and testing of our internal control over financial reporting to allow management and our independent registered public accounting firm to report on the effectiveness of our internal control over financial reporting,

as required by Section 404 of the Sarbanes-Oxley Act of 2002. Our compliance with Section 404 requires that we incur substantial accounting expense and expend significant management time on compliance-related issues. While neither we nor our independent registered public accounting firm have identified deficiencies in our internal control over financial reporting that are deemed to be material weaknesses, there can be no assurance that material weaknesses will not subsequently be identified. If we are unable to effectively remediate control deficiencies which are identified or are otherwise unable to maintain adequate internal controls over our financial reporting in the future, we may not be able to prepare reliable financial statements and comply with our reporting obligations on a timely basis, which could materially adversely affect our business and subject us to legal and regulatory action.

Global economic conditions may adversely affect demand for our services or fees payable under our subscription agreements, which could adversely affect our financial condition and operating results.
Our operations and performance depend significantly on worldwide economic conditions. In particular, the economics of countries in Europe have been experiencing weakness associated with high sovereign debt levels, weakness in the banking sector, and uncertainty over the future of the Euro zone, including instability surrounding Brexit. Uncertainty about global economic conditions poses a risk as businesses may postpone spending in response to tighter credit, negative financial news and declines in income or asset values. This response could have a material negative effect on the demand for our services. Furthermore, if our clients experience reduced operating income or revenues as a result of economic conditions or otherwise, it would reduce their subscription fees because those fees are generally reset annually based on the clients’ operating income or revenue. If the subscription fees payable under our subscription agreements are reduced substantially, it would have an adverse effect on our business and results of operations.

The requirements of being a public company may strain our resources, divert management’s attention and affect our ability to attract and retain qualified board members.
As a public company, we are subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Act, the listing requirements of the NASDAQ Stock Market and other applicable securities rules and regulations. Compliance with these rules and regulations has increased, and will likely continue to increase, our legal and financial compliance costs, make some activities more difficult, time-consuming or costly, and place significant strain on our personnel, systems and resources. In addition, changing laws, regulations and standards relating to corporate governance and public disclosure are creating uncertainty for public companies, increasing legal and financial compliance costs and making some activities more time consuming. These laws, regulations and standards are subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time. This could result in continuing uncertainty regarding compliance matters, higher administrative expenses and a diversion of management’s time and attention. Further, if our compliance efforts differ from the activities intended by regulatory or governing bodies due to ambiguities related to practice, regulatory authorities may initiate legal proceedings against us and our business may be harmed. Being a public company that is subject to these rules and regulations also makes it more expensive for us to obtain and retain director and officer liability insurance, and we may in the future be required to accept reduced coverage or incur substantially higher costs to obtain or retain adequate coverage. These factors could also make it more difficult for us to attract and retain qualified members of our Board of Directors and qualified executive officers.

If our security measures are breached or unauthorized access to customer data is otherwise obtained, our business may be perceived as not being secure, customers may reduce the use of or stop using our services and we may incur significant liabilities.
Our business involves the storage and transmission of our and our customers’ sensitive proprietary information. As a result, unauthorized access or security breaches could result in the loss of information, litigation, indemnity obligations and other liability. While we have security measures in place that are designed to protect customer information and prevent data loss and other security breaches, if these measures are breached as a result of third-party action, employee error, malfeasance or otherwise, and someone obtains unauthorized access to our data or our our customers’ data, we could face loss of business, regulatory investigations or orders, our reputation could be severely damaged, we could be required to expend significant capital and other resources to alleviate the problem, as well as incur significant costs and liabilities, including due to litigation, indemnity obligations, damages for contract breach, penalties for violation of applicable laws or regulations, and costs for remediation and other incentives offered to customers or other business partners in an effort to maintain business relationships after a breach.

We cannot assure you that any limitations of liability provisions in our contracts would be enforceable or adequate or would otherwise protect us from any liabilities or damages with respect to any particular claim relating to a security lapse or breach. We also cannot be sure that our existing insurance coverage will continue to be available on acceptable terms or will be available in sufficient amounts to cover one or more large claims related to a security breach, or that the insurer will not deny coverage as to any future claim. The successful assertion of one or more large claims against us that exceed

available insurance coverage, or the occurrence of changes in our insurance policies, including premium increases or the imposition of large deductible or co-insurance requirements, could have a material adverse effect on our business, including our financial condition, operating results, and reputation.

Cyber-attacks and other malicious Internet-based activities continue to increase generally. Because the techniques used to obtain unauthorized access or sabotage systems change frequently and generally are not identified until they are launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures. In addition, third parties may attempt to fraudulently induce employees or users to disclose information to gain access to our data or our customers’ data. If any of these events occur, our or our customers’ information could be accessed or disclosed improperly. Any or all of these issues could negatively affect our ability to attract new customers, cause existing customers to elect to not renew their subscriptions, result in reputational damage or subject us to third-party lawsuits, regulatory fines or other action or liability, which could adversely affect our operating results.

Privacy concerns and laws or other domestic or foreign regulations may reduce the effectiveness of our business and adversely affect our business.
Our business, particularly our discovery services business, may involve the collection, use and storage of certain types of personal or identifying information regarding our customers, their employees and partners. Federal, state and foreign government bodies and agencies have adopted, are considering adopting or may adopt laws and regulations regarding the collection, use, storage and disclosure of personal information obtained from consumers and individuals, such as compliance with the Health Insurance Portability and Accountability Act and the recently created EU-U.S. Privacy Shield. The costs of compliance with, and other burdens imposed by, such laws and regulations that are applicable to the businesses of our customers may limit the use and adoption of our business and reduce overall demand or lead to significant fines, penalties or liabilities for any noncompliance with such privacy laws. Even the perception of privacy concerns, whether or not valid, may inhibit adoption of our business in certain industries.

All of these domestic and international legislative and regulatory initiatives may adversely affect our customers’ ability to process, handle, store, use and transmit demographic and personal information from their employees, customers and partners, which could reduce demand for our business. The European Union (“EU”) and many countries in Europe have stringent privacy laws and regulations, which may affect our ability to operate cost effectively in certain European countries. In particular, the EU has adopted the General Data Protection Regulation (“GDPR”) which will go into effect in early 2018 and contains numerous requirements and changes, including more robust obligations on data processors and heavier documentation requirements for data protection compliance programs by companies. Complying with the GDPR may cause us to incur substantial operational costs or require us to change our business practices. Despite our efforts to bring practices into compliance before the effective date of the GDPR, we may not be successful either due to internal or external factors such as resource allocation limitations or a lack of vendor cooperation. Non-compliance could result in proceedings against us by governmental entities or others. We may also experience difficulty retaining or obtaining new European or multi-national customers due to the compliance cost, potential risk exposure, and uncertainty for these entities.

Sales to customers outside the United States or with international operations expose us to risks inherent in international sales.
A key element of our growth strategy is to expand our international operations and develop a worldwide customer base. The combined revenues from non-U.S. regions, based on the country in which the client is domiciled, constituted 41%, 42% and 36% of our total revenues for the fiscal years ended December 31, 2017, 2016 and 2015, respectively. Operating in international markets requires significant resources and management attention and will subject us to regulatory, economic and political risks that are different from those in the United States. Because of our limited experience with international operations, our international expansion efforts may not be successful in creating additional demand for our services outside of the United States or in effectively selling our services in all of the international markets we enter. There can be no assurance that we will be able to continue to grow our combined revenues from non-U.S. regions as a percentage of our total revenues. In addition, we will face risks in doing business internationally that could adversely affect our business, including:
the need to localize and adapt our services for specific countries, including translation into foreign languages and associated expenses;
data privacy laws that require customer data to be stored and processed in a designated territory;
difficulties in staffing and managing foreign operations and working with foreign partners;
different pricing environments, longer sales cycles and longer accounts receivable payment cycles and collections issues;

new and different sources of competition;
weaker protection for intellectual property and other legal rights than in the United States and practical difficulties in enforcing intellectual property and other rights outside of the United States;
laws and business practices favoring local competitors;
compliance challenges related to the complexity of multiple, conflicting and changing governmental laws and regulations, including employment, tax, privacy and data protection laws and regulations;
increased financial accounting and reporting burdens and complexities;
restrictions on the transfer of funds;
fluctuations in currency exchange rates, which could increase the price of our services outside of the United States, increase the expenses of our international operations and expose us to foreign currency exchange rate risk;
adverse tax consequences; and
unstable regional and economic political conditions.

As we continue to expand our business globally, our success will depend, in large part, on our ability to anticipate and effectively manage these and other risks associated with our international sales and operations. Our failure to manage any of these risks successfully, or to comply with these laws and regulations, could harm our operations, reduce our sales and harm our business, operating results and financial condition.

We might require additional capital to support our business growth and future patent asset acquisitions, and this capital might not be available on acceptable terms, or at all. If we are unable to obtain adequate financing or financing on terms satisfactory to us when we require it, our ability to continue to support our business growth and to respond to business challenges could be significantly limited.
We intend to continue to make investments to support our business growth and may require additional funds to respond to business challenges, including the need to acquire patent assets, develop new services or enhance our existing service offering, enhance our operating infrastructure and acquire complementary businesses and technologies. Accordingly, we may need to engage in equity or debt financings or enter into credit agreements to secure additional funds. If we raise additional funds through further issuances of equity or convertible debt securities, our existing stockholders could suffer significant dilution, and any new equity securities we issue could have rights, preferences and privileges superior to those of holders of our common stock. Any debt financing secured by us in the future could involve restrictive covenants relating to our capital-raising activities and other financial and operational matters, which may make it more difficult for us to obtain additional capital and to pursue business opportunities, including potential acquisitions. In addition, we may not be able to obtain additional financing on terms favorable to us, or at all. If we are unable to obtain adequate financing or financing on terms satisfactory to us when we require it, our ability to continue to support our business growth and to respond to business challenges could be significantly limited, which could have an adverse effect on our business and financial condition.

Our results of operations could vary as a result of the methods, estimates and judgments we use in applying our accounting policies.
The methods, estimates and judgments we use in applying our accounting policies have a significant impact on our results of operations, including the reported amounts of assets, liabilities, revenue and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, patent assets, other investments, income taxes, litigation and other intangibles, and other contingencies. Such methods, estimates and judgments are, by their nature, subject to substantial risks, uncertainties and assumptions, and factors may arise over time that lead us to change our methods, estimates and judgments. In addition, actual results may differ from these estimates under different assumptions or conditions. Changes in those methods, estimates and judgments could significantly affect our results of operations.

We may not be able to continue offering an “A” rated insurance product.
In May 2014, we began offering an “A” rated insurance product. If we are unable to maintain our relationship with one or more “A” rated insurance companies, we may be unable to continue offering an “A” rated insurance product, which could have an adverse effect on new insurance business growth and retention of our existing insurance business.


Our operations are subject to risks of natural disasters, acts of war, terrorism or widespread illness at our domestic and international locations, any one of which could result in a business stoppage and negatively affect our operating results.
Our business operations depend on our ability to maintain and protect our facility, computer systems and personnel, which are primarily located in the San Francisco Bay Area. The San Francisco Bay Area is in close proximity to known earthquake fault zones. Our facility and transportation for our employees are susceptible to damage from earthquakes and other natural disasters such as fires, floods and similar events. Should earthquakes or other catastrophes such as fires, floods, power outages, communication failures or similar events disable our facilities, we do not have readily available alternative facilities from which we could conduct our business, which stoppage could have a negative effect on our operating results. Acts of terrorism, widespread illness and war could also have a negative effect at our international and domestic facilities and on our operating results.

Risks Related to Ownership of Our Common Stock
The trading price of our common stock has been volatile and is likely to be volatile in the future, and you might not be able to sell your shares at or above the price at which you purchased them.
Since our initial public offering in May 2011, our stock price has traded as high as $31.41 per share and as low as $8.55 per share. Further, our common stock has a limited trading history and an active trading market for our common stock may not be sustained in the future. The market price of our common stock could be subject to wide fluctuations in response to various factors, some of which are beyond our control. These factors include those discussed in this “Risk Factors” section of this Annual Report on Form 10-K and others such as:
variations in our financial condition and operating results;
the financial projections we may provide to the public, any changes in these projections or our failure to meet these projections;
changes in the estimates of our operating results or changes in recommendations by any securities analysts that elect to follow our common stock;
addition or loss of significant clients;
adoption or modification of laws, regulations, policies, procedures or programs applicable to our business, including those related to the enforcement of patent claims;
announcements of technological innovations, new products and services, acquisitions, strategic alliances or significant agreements by us or by our competitors;
factors regarding the previously-announced process to explore and evaluate strategic alternatives to maximize shareholder value;
recruitment or departure of members of our Board of Directors, management team or other key personnel;
market conditions in our industry;
the impact of macroeconomic, market, and political factors and trends, including in light of Brexit, and other recent political developments;
price and volume fluctuations in the overall stock market or resulting from inconsistent trading volume levels of our shares;
lawsuits threatened or filed against us;
any change in our quarterly dividend or stock repurchase program;
sales of our common stock by us or our stockholders; and
the opening or closing of our employee trading window.

In recent years, the stock market has experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the changes in the operating performance of the companies whose stock is experiencing those price and volume fluctuations. Broad market and industry factors may seriously affect the market price of our common stock, regardless of our actual operating performance.

Substantial future sales of shares by existing stockholders, or the perception that such sales may occur, could cause our stock price to decline, even if our business is doing well.
If our existing stockholders, particularly our directors and executive officers, sell substantial amounts of our common stock in the public market, or are perceived by the public market as intending to sell substantial amounts of our common stock, the trading price of our common stock could decline.


In addition, shares that are subject to outstanding options or that may be granted in the future under our equity plans will be eligible for sale in the public market to the extent permitted by the provisions of various vesting agreements and Rules 144 and 701 under the Securities Act.

If any of these additional shares described are sold, or if it is perceived that they will be sold, in the public market, the trading price of our common stock could decline.

As a public company, our stock price has been volatile, and securities class action litigation has often been instituted against companies following periods of volatility of their stock price. Any such litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources.
In the past, following periods of volatility in the overall market and the market price of particular companies’ securities, securities class action litigation has been instituted against these companies. Our stock has been volatile and may continue to be volatile. If instituted against us, securities litigation could result in substantial costs and a diversion of our management’s attention and resources, which could adversely affect our operating results, financial condition and stock price.

Anti-takeover provisions in our charter documents and Delaware law could discourage, delay or prevent a change in control of our company and may affect the trading price of our common stock.
We are a Delaware corporation and the anti-takeover provisions of the Delaware General Corporation Law may discourage, delay or prevent a change in control by prohibiting us from engaging in a business combination with an interested stockholder for a period of three years after the person becomes an interested stockholder, even if a change in control would be beneficial to our existing stockholders. In addition, our amended and restated certificate of incorporation and amended and restated bylaws may discourage, delay or prevent a change in our management or control over us that stockholders may consider favorable. Our amended and restated certificate of incorporation and amended and restated bylaws:
authorize the issuance of “blank check” preferred stock that could be issued by our Board of Directors to thwart a takeover attempt;
establish a classified Board of Directors, as a result of which the successors to the directors whose terms have expired will be elected to serve from the time of election and qualification until the third annual meeting following their election;
require that directors only be removed from office for cause and only upon a majority stockholder vote;
provide that vacancies on our Board of Directors, including newly created directorships, may be filled only by a majority vote of directors then in office;
limit who may call special meetings of stockholders;
prohibit stockholder action by written consent, requiring all actions to be taken at a meeting of the stockholders;
do not provide stockholders with the ability to cumulate their votes;
require supermajority stockholder voting to effect certain amendments to our amended and restated certificate of incorporation and amended and restated bylaws; and
require advance notification of stockholder nominations and proposals.

Our stock repurchase program could affect the price of our common stock and increase volatility and may be suspended or terminated at any time, which may result in a decrease in the trading price of our common stock.
In February 2015, our Board of Directors approved a share repurchase program of up to $75.0 million. In March 2016 and May 2016, our Board of Directors further increased the amount authorized to repurchase by $25.0 million and $50.0 million, respectively, to an aggregate authorized amount of $150.0 million. The timing and actual number of shares repurchased will depend on a variety of factors including price, corporate and regulatory requirements, an assessment by management and our Board of Directors of cash availability and other market conditions. The program may be suspended or discontinued at any time without prior notice. Repurchases pursuant to our stock repurchase program could affect the price of our common stock and increase its volatility. The existence of our stock repurchase program could also cause the price of our common stock to be higher than it would be in the absence of such a program and could potentially reduce the market liquidity for our common stock. There can be no assurance that any stock repurchases will enhance stockholder value because the market price of our common stock may decline below the levels at which we repurchased such shares. Any failure to repurchase shares after we have announced our intention to do so may negatively impact our reputation and investor confidence in us and may negatively impact our stock price. Although our stock repurchase program is intended to enhance long-term stockholder value, short-term stock price fluctuations could reduce the program's effectiveness.

Our quarterly dividend is new and modest in amount, and consequently, your ability to achieve a return on your investment will continue to depend primarily on appreciation in the price of our common stock.
On October 30, 2017, we announced that we will pay a quarterly cash dividend of $0.05 per share, the first of which we paid on December 5, 2017, to shareholders of record on November 20, 2017. Previously, we had never declared or paid cash dividends on our common stock. Our quarterly dividend is new and modest in amount. Consequently, investors must rely on sales of their common stock after price appreciation, which may never occur, as the primary way to realize any future gains on their investments. There is no guarantee that shares of our common stock will appreciate in value or even maintain the price at which our stockholders have purchased their shares.
Item 1B.Unresolved Staff Comments.
None
Item 2.Properties.
Our properties consist of leased office facilities for sales, support, administrative, and other functions. We currently lease approximately 49,000 square feet of office space for our corporate headquarters in one location in San Francisco, California pursuant to a lease agreement that expires in October 2019. We also lease other facilities for current use consisting of approximately 69,000 square feet in the United States and abroad. Less than 20% of our total leased space is sublet. We believe that our current facilities are suitable and adequate to meet our current needs. We believe that suitable additional or substitute space will be available as needed to accommodate any potential expansion of our operations.
Item 3.Legal Proceedings.
From time to time, we may be a party to various litigation claims in the normal course of business. Legal fees and other costs associated with such actions are expensed as incurred. We assess, in conjunction with our legal counsel, the need to record a liability for litigation or contingencies. A liability is recorded when and if it is determined that such a liability for litigation or contingencies is both probable and reasonably estimable. No liability for litigation or contingencies was recorded as of December 31, 2017.

In June 2013, Kevin O’Halloran, as Trustee of the Liquidating Trust of Tectonics, Inc. (the “Debtor”), filed a complaint in the U.S. Bankruptcy Court for the Middle District of Florida against the Company and Harris Corporation (the “Defendants”). The complaint alleges that the Defendants are liable under federal and state bankruptcy law regarding fraudulent transfers for the value of a patent portfolio purchased by the Company from Harris Corporation pursuant to an agreement entered into in January 2009, and within four years of the date the Debtor filed its petition in bankruptcy. In February 2015, the Court held a trial and in November 2015 entered judgment in favor of the Defendants. In December 2015, the Debtor filed an appeal of the judgment to the U.S. District Court for the Middle District of Florida. In August 2016, the District Court affirmed the judgment in favor of the Defendants. In September 2016, the Debtor filed an appeal of the judgment to the U.S. Court of Appeals for the Eleventh Circuit. The appellate briefing was completed in January 2017, and oral argument occurred on December 14, 2017. The Company is not currently able to determine whether there is a reasonable possibility that a loss has been incurred, nor can it estimate the potential loss or range of the potential loss that may result from this litigation.

In March 2012, Cascades Computer Innovations LLC filed a complaint in U.S. District Court for the Northern District of California (the “District Court”) against the Company and five of its clients (collectively the “Defendants”). The complaint alleges that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. The complaint further alleged that after the Company terminated its negotiations with the plaintiff to license certain patents held by the plaintiff, the Defendants violated the law by jointly refusing to negotiate or accept licenses under the plaintiff’s patents. The plaintiff sought unspecified monetary damages and injunctive relief. In January 2013, the District Court dismissed the complaint against the Defendants and granted the plaintiff leave to amend its complaint. In February 2013, the plaintiff filed an amended lawsuit alleging that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. In April 2016, the District Court entered a final judgment in favor of the Defendants on all the plaintiff's claims. In April 2016, the plaintiff filed an appeal of the judgment. On December 11, 2017, the U.S. Court of Appeals for the Ninth Circuit affirmed the District Court in full, and the order took effect on January 2, 2018.

Item 4.Mine Safety Disclosures.
Not applicable.

PART II.
Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.
Price Range of Common Stock
Our common stock is currently traded on the NASDAQ Global Select Market under the symbol “RPXC” and has been traded on NASDAQ since our initial public offering on May 4, 2011. The following table sets forth, for the periods indicated, the high and low closing prices of our common stock as reported on the NASDAQ Global Select Market.
  High Low
For the year ended December 31, 2016:    
First Quarter $11.66
 $9.41
Second Quarter 11.48
 8.71
Third Quarter 11.31
 9.10
Fourth Quarter 11.35
 9.28
For the year ended December 31, 2017:    
First Quarter $12.38
 $10.49
Second Quarter 14.22
 11.97
Third Quarter 14.25
 12.34
Fourth Quarter 14.23
 12.57
Holders
At February 23, 2018, there were 14 stockholders of record of our common stock. Because many of our shares of common stock are held by brokers or other institutions on behalf of stockholders, we are unable to estimate the total number of stockholders represented by the record holders.
Dividends
During the fourth quarter of 2017, we announced a regular quarterly cash dividend of $0.05 per share of common stock, the first of which was paid in December 2017. Prior to this announcement, we had never declared or paid any cash dividends on our capital stock. We expect to pay quarterly dividends of $0.05 per share of common stock, subject to announcement by our Board of Directors.

Stock Performance Graph
This performance graph shall not be deemed “soliciting material” or to be “filed” with the Securities and Exchange Commission for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or the Exchange Act, or otherwise subject to the liabilities under that Section, and shall not be deemed to be incorporated by reference into any filing of RPX Corporation under the Securities Act of 1933, as amended, or the Securities Act.

The following graph shows the value of an investment of $100 in our common stock, the NASDAQ Composite Index, and the NASDAQ-100 Technology Sector Index for each of the last five years, assuming the reinvestment of any dividends. The comparisons shown in the graph are based upon historical data and we caution that the stock price performance shown in the graph is neither indicative of, nor intended to forecast, the potential future performance of our stock.

Sales of Unregistered Securities
None.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers
Stock repurchase activity during the three months ended December 31, 2017 was as follows:
Period Ended Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Programs 
Maximum Dollar Value that May Yet be Purchased Under the Programs (1)
October 31, 2017 51,895
 $13.40
 51,895
 $56,399,777
November 30, 2017 74,809
 12.90
 74,809
 55,434,742
December 31, 2017 
 
 
 55,434,742
  126,704
   126,704
  
(1) On February 10, 2015, we announced that our Board of Directors had authorized a share repurchase program under which we are authorized to repurchase up to $75.0 million of our outstanding common stock with no expiration date from the date of authorization. In March 2016 and May 2016, we increased our share repurchase program by $25 million and $50 million, respectively, for a total amount authorized of $150 million. As of December 31, 2017, we had repurchased $94.6 million of our outstanding common stock under the program. Under the program, shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Exchange Act. Our share repurchase program does not obligate us to acquire any specific number of shares.

Item 6.Selected Consolidated Financial Data.
The selected consolidated financial data for the years ended December 31, 2017, 2016 and 2015, as well as the consolidated balance sheet data as of December 31, 2017 and 2016, are derived from our audited consolidated financial statements that are included elsewhere in this Annual Report on Form 10-K. The selected consolidated financial data for years ended December 31, 2014 and 2013 as well as the consolidated balance sheet data as of December 31, 2015, 2014 and 2013 are derived from audited consolidated financial statements not included in this Annual Report on Form 10-K. The historical results presented below are not necessarily indicative of results of future operations, and should be read in conjunction with Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and related notes thereto included in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Form 10-K to fully understand factors that may affect the comparability of the information presented below.
  Year Ended December 31,
  
2017 (1)
 
2016 (2)
 2015 2014 2013
  (in thousands, except per share data)
Revenue $330,457
 $333,107
 $291,881
 $259,335
 $237,504
Cost of revenue 203,709
 197,262
 148,858
 124,435
 110,771
Selling, general and administrative expenses 90,507
 100,457
 77,428
 71,679
 62,525
Impairment losses 94,051
 
 
 
 
(Gain) loss on sale of patent assets, net 
 
 (592) (707) 126
Operating income (loss) (57,810) 35,388
 66,187
 63,928
 64,082
Interest and other income (expense), net (1,255) (3,079) (688) 354
 213
Income (loss) before provision for income taxes (59,065) 32,309
 65,499
 64,282
 64,295
Provision for income taxes 20,078
 14,074
 26,077
 24,941
 23,512
Net income (loss) $(79,143) $18,235
 $39,422
 $39,341
 $40,783
           
Net income (loss) available to common stockholders:          
Basic $(79,143) $18,235
 $39,422
 $39,341
 $40,763
Diluted $(79,143) $18,235
 $39,422
 $39,341
 $40,763
Net income (loss) available to common stockholders per common share:          
Basic $(1.61) $0.36
 $0.72
 $0.74
 $0.78
Diluted $(1.61) $0.36
 $0.71
 $0.72
 $0.76
Weighted-average shares used in computing net income (loss) available to common stockholders per common share:          
Basic 49,240
 50,462
 54,432
 53,444
 51,956
Diluted 49,240
 51,001
 55,410
 54,818
 53,652
           
Dividends declared per common share $0.05
 $
 $
 $
 $

  As of December 31,
  
2017 (1)
 
2016 (2)
 2015 2014 2013
  (in thousands)
Cash, cash equivalents, and short-term investments $157,165
 $190,988
 $325,998
 $317,533
 $290,722
Patent assets, net 163,048
 212,999
 254,560
 236,349
 219,954
Total assets 550,830
 735,289
 658,561
 642,064
 588,801
Deferred revenue, including current portion 106,868
 130,408
 115,652
 136,209
 137,743
Notes payable and other deferred payment obligations, including current portion 
 
 2,383
 
 500
Long-term debt, including current portion 
 94,584
 
 
 
Total liabilities 141,075
 261,008
 142,082
 157,019
 163,878
Total stockholders’ equity 409,755
 474,281
 516,479
 485,045
 424,923
(1) In February 2018, we concluded that impairment losses of $94.1 million would be recorded in the financial information of the three months and fiscal year ended December 31, 2017, $89.0 million of which relates to goodwill in our discovery services segment and the remaining impairment is associated with our cost method investments in our patent risk management segment. Our conclusion on goodwill impairment was made in connection with our annual impairment testing of goodwill which resulted in the carrying values exceeding the fair values primarily due to (1) decreased expected future cash flows from pricing pressures and competition in the discovery services marketplace as well as significant fluctuations due to the project-based nature of these cash flows, and (2) a decrease in estimated peer company values. No cash expenditures are anticipated as a result of the impairment losses.
(2) In January 2016, we acquired Inventus Solutions, Inc., which is included in our selected consolidated financial data as of the acquisition date.



Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations.
This Annual Report on Form 10-K contains “forward-looking statements” that involve risks and uncertainties, as well as assumptions which, if they never materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. The statements contained in this Annual Report on Form 10-K that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the “Exchange Act.” Forward-looking statements are often identified by the use of words such as, but not limited to, “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would,” and similar expressions or variations intended to identify forward-looking statements. Forward-looking statements include statements regarding our business strategies and business model, products, benefits to our clients, future financial results and expenses, our acquisition of Inventus Solutions, Inc. ("Inventus"), our patent acquisition spending, our competitive position, and the previously announced process to explore and evaluate strategic alternatives to maximize shareholder value. These statements are based on the beliefs and assumptions of our management based on information currently available. Such forward-looking statements are subject to risks, uncertainties and other important factors that could cause actual results and the timing of certain events to differ materially from future results expressed or implied by such forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below, and those discussed in the section titled “Risk Factors” included in Part I, Item 1A of this Annual Report on Form 10-K.

Furthermore, such forward-looking statements speak only as of the date of this report. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.
Overview
Since our founding in 2008, we have been providing an alternative to litigation through our patent risk management services. In January 2016, through our acquisition of Inventus, we began offering technology-enabled discovery services to our clients.

We help companies reduce patent-related risk and corporate legal expense by providing two primary service offerings: (1) a subscription-based patent risk management service offering that facilitates more efficient exchanges of value between owners and users of patents compared to transactions driven by actual or threatened litigation, and (2) a discovery services offering.

Patent Risk Management
We serve as a trusted intermediary in the patent marketplace. Our business model aligns our interests with those of our clients, with whom we have developed trusted relationships. Our patent risk management services clients include companies that design, make, or sell technology-based products and services as well as companies that use technology in their businesses, and who face legal claims for patent infringement. We have not asserted and will not assert our patents. We have a unique ability to confer and consult with our clients about mitigating their risk of patent litigation. In exchange for an upfront annual subscription fee, we provide the following to our patent risk management clients throughout their memberships:
the review and analysis of patents offered for sale, including analysis of patent quality, validity, and commercial significance;
defensive patent acquisition, by which we acquire patents and patent rights on behalf of all of our patent risk management clients;
facilitation of syndicated transactions;
prior art searches;
proprietary periodic analysis and publication of patent market trends;
the tracking of all US patent applications and issuances, patent litigation activity, and associated parties; and
publication and provision of patent-related data to governmental and regulatory bodies to inform public policy discussion about patent reform and trends.

Access to these services is available primarily through discussions with our professionals—particularly client services and our team of patent experts, as well as through a proprietary database, and attendance of regularly scheduled conferences.


Insuring against the costs of patent infringement litigation is a natural extension of our patent risk management membership. Our patent infringement litigation expense insurance is a liability insurance policy for operating companies that covers certain costs associated with patent infringement lawsuits. We assume some portion of the underwriting risk on the insurance policies that we issue on behalf of third party underwriters. To date, the effect of the insurance policies that we have issued or assumed through our reinsurance business was not material to our results of operations or financial condition.

During the year ended December 31, 2017 and 2016, revenue from our patent risk management services was $252.3 million and $267.0 million, respectively.

As of December 31, 2017, our patent risk management segment had more than 330 clients, consisting of our patent risk management network members and insurance clients. We provide patent risk management services to 450 companies, including those insured under policies sold to venture funds and industry trade associations. During the year ended December 31, 2017, we completed 55 acquisitions of patent assets and our gross and net patent acquisition spend totaled $179.9 million and $106.0 million, respectively. From our inception through December 31, 2017, we have completed 440 acquisitions of patent assets with gross and net patent acquisition spend of $2.4 billion and $1.1 billion, respectively.

Discovery Services
Through our wholly owned subsidiary Inventus, in 2016 we began offering technology-enabled discovery services to assist leading law firms and corporate legal departments manage costs and risks related to the legal discovery process. Our discovery service offering focuses on the process of consolidation and organization of data into meaningful discovery information powered by a mix of third-party and proprietary software. This allows our discovery services clients to efficiently manage a portfolio of legal discovery matters in a central location.

Our more than 1,000 discovery services clients in over a dozen countries benefit from our discovery services, which includes data hosting and backup, data processing and collection, project management, document review, and traditional document production. All of these services are designed to streamline the administration of litigation, investigations, and regulatory compliance. During the year ended December 31, 2017 and 2016, revenue from our discovery services was $78.2 million and $66.1 million, respectively. Certain of our discovery services operations are denominated in currencies other than the U.S. dollar, primarily the British pound sterling and the Euro, and therefore these operations are exposed to foreign exchange rate fluctuations.
Key Components of Results of Operations
Revenue
Subscription revenue includes membership subscriptions to our patent risk management services, premiums earned, net of ceding commissions, from insurance policies, and management fees related to our insurance business. Historically, the majority of our revenue has consisted of fees paid by our clients under subscription agreements. Our subscription revenue will be positively or negatively impacted by the financial performance of our patent risk management clients on our rate card since their subscription fees typically reset annually based upon their most recently reported annual financial results.

Through December 31, 2017, we recognized revenue in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 605, Revenue Recognition (“ASC 605”) and related authoritative guidance. Effective January 1, 2018, we began recognizing revenue in accordance with FASB ASC 606, Revenue from Contracts with Customers ("ASC 606"), which is explained further under the heading "Revenue from Contracts with Customers" in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report. Our patent risk management revenue subscription revenue and fee-related revenue will be materially impacted by the adoption of this new standard due to the identification of multiple performance obligations from our patent risk management membership subscription and the timing and amount of recognition for these separable performance obligations. Specifically, we recognize separate performance obligations under the new standard for certain discrete patent assets transferred to our membership clients (referred to as a "catalyst license") as well as for access to the patent portfolio clients obtain when becoming a member or renewing membership (referred to as a "portfolio access license"). The revenue generated from these additional performance obligations will be recognized at a point in time under ASC 606 as licensing revenue whereas under ASC 605, we generally recognized these membership fees ratably over the term of the customer contract as subscription revenue. Additionally, we will determine whether revenue should be treated on a gross or net basis for these additional separable performance obligations which may result in revenue which is treated on a gross basis under ASC 605 to be treated on a net basis under ASC 606 which will cause a reduction in basis in our patent assets.

Therefore, the adoption of ASC 606 increases the variability of revenue recognized from our patent risk management services from period to period as well as reduces revenue and patent assets, including amortization of these patent assets, previously treated on a gross basis under ASC 605 that will be treated on a net basis under ASC 606.

In August 2012, we launched our insurance product and started to recognize insurance premium revenue from the insurance policies that we underwrite. As the primary insurer, we had been recognizing the full insurance premium as revenue. In May 2014, we began to assume a portion of the underwriting risk on insurance policies that we issue on behalf of third party underwriters, and as a result we recognize only the portion of the underwriting risk that we assume. In addition, we receive management fees for marketing, underwriting, and claims management services. Although we expect this revenue to increase as we sell more insurance policies in the future, to date, insurance premium revenue has not material to our results of operations.

Discovery revenue represents fees generated from services rendered in connection with our discovery services. These services are typically comprised of document collection and processing, document review, document production, and project management, and are generally billed in arrears based on the number of users, amount of data stored, or number of consulting hours. Our discovery revenue may fluctuate significantly based on the project-oriented nature of the discovery services we provide.

We recognize revenue from the sale of licenses and advisory fee income in connection with syndicated acquisitions, which we collectively refer to as fee-related revenue. In the future, we may receive other revenue and fee income from newly-introduced products and services. We do not believe that our rate of growth since inception is representative of anticipated future revenue growth and we may experience a year-over-year decline in revenue in future periods.

Cost of Revenue
Cost of revenue from our patent risk management services primarily consists of amortization expenses related to acquired patent assets. Acquired patent assets are capitalized and amortized ratably over their estimated useful lives, which typically relates to the anticipated cash flows from clients and prospects that will benefit from the transaction. Also included in the cost of revenue from our patent risk management service are expenses incurred to maintain our patents, prosecute our patent applications, conduct inter partes reviews and prior art searches, and amortization expense for acquired intangible assets and internally developed software. With the launch of our insurance offering in August 2012, cost of revenue from our patent risk management services began to include premiums ceded to reinsurers and loss reserves. We began to issue new policies under a reinsurance model in May 2014 and under this model we do not cede premiums.

Our cost of revenue from our patent risk management services is primarily driven by the amortization of previously acquired patent assets, which are typically amortized over an estimated useful life of 24 to 60 months. From time to time, we may acquire patent assets that are valuable to our clients and prospects with an estimated useful life that is significantly less than the historical weighted-average of patent assets previously acquired, resulting in increased patent asset amortization expense in periods immediately following the acquisition. Estimating the economic useful lives of our patent assets depends on various factors including whether we acquire patents or licenses to patents, and the remaining statutory life of the underlying patents, either of which could result in shorter amortization periods. We believe that amortization periods of patent assets to be acquired in future periods may be amortized over shorter periods than the historical weighted-average of 38 months, which will cause our cost of revenue to increase. Our cost of revenue from our patent risk management services may fluctuate in the future as it is dependent on the level of patent asset purchases, the amortization period of the patent assets we acquire, and the level of insurance policies we write.

As mentioned above, effective January 1, 2018, we began recognizing revenue under ASC 606, under which we will determine whether revenue should be treated on a gross or net basis for additional separable performance obligations which may result in revenue which is treated on a gross basis under ASC 605 to be treated on a net basis under ASC 606. Revenues that are treated on a net basis under ASC 606 will reduce the basis in our patent assets, and therefore we expect the adoption of ASC 606 to reduce our amortization expense related to our patent assets which is recorded in cost of revenue.

Cost of revenue from our discovery services primarily consists of compensation costs for employees and third-party contractors who deliver services to our clients, costs incurred to maintain, secure, and store hosted data, license fees for the software we utilize in our discovery services process, and amortization of our identifiable intangible assets

for technology used to provide our discovery services to our clients. Our cost of revenue related to hosting data and software license fees is primarily fixed but can fluctuate based on levels of data hosted and number of users our clients choose to have access to the software.

Selling, General and Administrative Expenses
Selling, general and administrative expenses consist of salaries and related expenses, including stock-based compensation expense, amortization related to our intangible assets, cost of marketing programs, legal costs, professional fees, travel costs, facility costs and other corporate expenses. Our selling, general and administrative expenses could fluctuate from period to period.

Impairment Losses
Impairment losses consist of impairment charges related to our discovery services goodwill as well as our cost method investments. We do not expect these impairment losses to be recurring in nature, however, we may recognize additional impairment losses in the future if we determine the carrying values of our recorded assets to not be recoverable which is impacted by a number of factors including general economic conditions, changes in the competitive landscape, and our operational performance in the future.

Interest and Other Income (Expense), Net
Interest and other income (expense), net consists of interest income earned on our cash, cash equivalents and short-term investments, interest expense incurred on our term debt, gains or losses due to foreign currency fluctuations, as well as changes in fair value of our deferred payment obligations. Our results of operations and cash flows are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the British pound sterling, Japanese yen, and Euro relative to the U.S. dollar. We expect our interest expense to decrease in the future as we paid down the outstanding balance of our Term Facility in full in November 2017 and terminated the Credit Agreement in December 2017.

Provision for Income Taxes
Income taxes are computed using the asset and liability method, under which deferred tax assets and liabilities are determined based on the difference between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.

On December 22, 2017, the Tax Cuts and Jobs Act was signed into law. Among other changes is a permanent reduction in the federal corporate income tax rate from 35% to 21% effective January 1, 2018. As a result of the reduction in the corporate income tax rate, we were required to remeasure our net deferred tax asset as of December 31, 2017, which resulted in a reduction in the deferred tax asset value of approximately $14.4 million, offset by a change in valuation allowance of $1.0 million, which resulted in a deferred tax expense of $13.4 million. We expect our effective tax rate to increase in the future due to our inability to utilize foreign tax credits as well as the tax treatment of these foreign tax credits under the Tax Cuts and Jobs Act.

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the 2017 Tax Cuts and Jobs Act (SAB 118), which allows us to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. Since the Tax Cuts and Jobs Act was passed late in the fourth quarter of 2017, and ongoing guidance and accounting interpretation are expected over the next 12 months, we consider the accounting of the deferred tax re-measurements, and other items to be incomplete due to the forthcoming guidance and our ongoing analysis of final year-end data and tax positions. We expect to complete our analysis within the measurement period in accordance with SAB 118.
Critical Accounting Policies and Estimates
Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, costs and expenses and related disclosures.

We believe that, of our significant accounting policies, which are described in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report, the following accounting policies involve a greater degree of judgment and complexity. Accordingly, these are the

policies we believe are the most critical to aid in fully understanding and evaluating our consolidated financial condition and results of operations.

Revenue Recognition
Through December 31, 2017, we recognized revenue in accordance with ASC 605 and related authoritative guidance, our policy on which is included below. Effective January 1, 2018, we began recognizing revenue in accordance with ASC 606 which is explained further under the heading "Revenue from Contracts with Customers" in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report.

Patent Risk Management
The primary source of our revenue from our patent risk management service offering is fees paid by our clients under subscription agreements. We believe that the subscription component of our patent risk management services comprises a single deliverable and thus we recognize each subscription fee ratably over the period for which the fee applies. Revenue is recognized net of any discounts or other contractual incentives. We start recognizing revenue when all of the following criteria have been met:
Persuasive evidence of an arrangement exists. All subscription fees are supported by an executed subscription agreement.
Delivery has occurred or services have been rendered. The subscription agreement calls for us to provide our patent risk management services over a specific term commencing on the agreement effective date. Because services are not on an individualized basis (i.e., we generally perform our services on behalf of all of our clients as opposed to each client individually), delivery occurs automatically with the passage of time. Consequently, we recognize subscription revenue ratably.
Seller’s price to the buyer is fixed or determinable. Each client’s annual subscription fee is based either on a rate card in effect at the time of the client’s initial agreement or through a fixed fee which is risk-adjusted based on the client's specific patent risk profile. A client’s subscription fee on rate card is generally determined using its rate card and its normalized operating income, which is defined as the greater of (i) the average of its operating income for the three most recently reported fiscal years and (ii) 5% of its revenue for the most recently reported fiscal year. The fee for the first year of the agreement is typically determined and invoiced at the time of contract execution. The fee for each subsequent year of the agreement is generally calculated and invoiced in advance prior to each anniversary date of the agreement.
Collectability is reasonably assured. Subscription fees are generally collected on or near the effective date of the agreement and again at or near each anniversary date thereof. We do not recognize revenue in instances where collectability is not reasonably assured. Generally, our subscription agreements state that all fees paid are non-refundable.

In some limited instances, the subscription agreement includes a contingency clause, giving one or both parties an option to terminate the agreement and receive a full refund if contingencies are not resolved within a defined time period. In those instances, revenue will not be recognized until the contingency has been satisfied. The revenue earned during the period between the effective date of the agreement and the contingency removal date is recognized on the contingency removal date. Thereafter, revenue is recognized ratably over the remaining subscription term.

Our clients generally receive a term license to, and a release from all prior damages associated with, patent assets in our portfolio. The term license to each patent asset typically converts to a perpetual license at the end of a contractually specified vesting period, provided that the client is a member at such time. We do not view the conversion from term license to perpetual license to be a separate deliverable in our arrangements with our clients because the utility of, access to and freedom to practice the inventions covered by the patent asset is no different between a term and perpetual license.

In some instances, we accept a payment from a client to finance part or all of a patent asset acquisition. We refer to such transactions as syndicated acquisitions. The accounting for syndicated acquisitions can be complex and often requires judgments on the part of management as to the appropriate accounting treatment. In accordance with ASC 605-45, Revenue Recognition: Principal Agent Considerations, in instances where we substantively act as an agent to acquire patent rights from a seller on behalf of clients who are paying for such rights separately from their subscription agreements, we may treat the client payments on a net basis. When treated on a net basis, there may be little or no revenue recognized for such contributions, and the basis of the acquired patent rights may exclude the amounts paid by the contributing client based on our determination that we are not the principal in these transactions. In these situations, where we substantively act as an agent, the contributing clients are typically defendants in an active or threatened patent

infringement litigation filed by the owner of a patent. Our involvement is to assist our clients to secure a dismissal from litigation and a license to the underlying patents.

Key indicators evaluated to determine our role as either principal or agent in the transaction include, among others:
the entity to grant the license of the patent(s) is generally viewed as the primary obligor in the arrangement, given that it owns and controls the underlying patent(s) and thus has the absolute authority to grant and deliver any release from past damages and dismissal from litigation, and typically determines the general terms of the license(s) granted;
our inventory risk in the transaction, which is typically mitigated, as our clients often enter into contractual obligations with us prior to or contemporaneous with entering into a contractual obligation with the seller;
we have pricing latitude as we negotiate client contributions, however, this latitude is often limited as the economics of the transaction ultimately depend on the sales price set by the seller;
we are not involved in the determination of the product or service specification and has no ability to change the product or perform any part of the service in connection with these transactions, as the seller owns the underlying patent(s); and
our credit risk taken on the transaction, which is generally limited as each respective client has a contractually binding obligation, such clients are generally of high credit quality and in some instances, we collect the client contribution prior to making a payment to the seller.

In certain syndicated transactions, we may recognize revenue upon the sale of licenses to specific patent assets and/or upon completion of the rendering of advisory services.

Revenue recognition for arrangements with multiple deliverables. A multiple-element arrangement may include the sale of a subscription to our patent risk management services and an insurance policy to cover certain costs associated with patent infringement litigation, each of which are individually considered separate units of accounting. Each element within a multiple-element arrangement is accounted for as a separate unit of accounting given that the delivered products have value to the customer on a standalone basis. We consider a deliverable to have standalone value if the product or service is sold separately by us or another vendor. The delivery of insurance coverage is not dependent on a client’s subscription to our patent risk management services. While we believe our insurance product offering is unique, our clients are able to purchase insurance coverage as a standalone product from other providers. We sell the components of our patent risk management services on a standalone basis. To date, the effect of the insurance policies that we have assumed through our reinsurance business has not been material to our results of operations, financial condition, or cash flows.

Multiple deliverables included in an arrangement are separated into different units of accounting and the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. For our patent risk management service offering, we determine the relative selling price for a deliverable based on its best estimate of selling price ("BESP"). We have determined that vendor-specific objective evidence ("VSOE") and third-party evidence ("TPE") are not available for our patent risk management deliverables.

We have determined our BESP for a subscription to our patent risk management service offering based on the following:

List price, which represents the rates listed on our annual rate card. We publish a standard rate card annually. Each client’s subscription fee is typically calculated using the applicable rate card and its normalized operating income, which is defined as the greater of (i) 5% of the client’s most recently reported fiscal year’s revenue, and (ii) the average of the three most recently reported fiscal years’ operating income of the client. Each client’s annual subscription fee is reset annually based on its normalized operating income for its most recently completed fiscal years.

We have determined our BESP for our insurance product based on the following:

Actuarially determined factors. Although we sell our insurance product both on a standalone basis and as a component of a multiple-element arrangement, the pricing is not affected by the subscription to our patent risk management services. We use an actuarial model that calculates an individual client’s insurance premium based on its projected annual frequency (i.e., number of claims during the policy term) and severity (i.e., the amount which we expect to settle a claim).


Discovery Services
Revenue from our discovery services is primarily generated from the following:
data hosting fees based on data stored and number of users;
fees for month-to-month delivery of services, such as data processing (conversion of data into organized, searchable electronic database), project management and data collection services;
document review services which assist clients in the manual review of data responsive to a legal matter; and
printing and binding services (paper-based services).

We enter into agreements pursuant to which we offer various discovery services. Clients are generally billed monthly based on contractual unit prices and volumes for services delivered. The agreements are typically for an indefinite period of time, however, they are cancelable at will by either party. We are entitled to all fees incurred for services performed. The majority of our discovery services revenue comes from two types of billing arrangements: usage based and fixed fee.

Usage-based arrangements require the client to pay based upon predetermined unit prices and volumes for data hosing, data processing and paper-based services. Project management and review hours are billed based upon the number of hours worked by certain client service professionals at agreed upon rates.

In fixed-fee billing arrangements, we agree to a pre-established monthly fee over a specified term in exchange for various services. The fees are not tied to the attainment of any contractually defined objectives and the monthly fee is nonrefundable.

Based on an evaluation of the discovery services delivered to each client, we determined each deliverable has stand-alone value to the client as each of our discovery services can be sold on a stand-alone basis by us and the discovery services are available from other vendors. Additionally, discovery services do not carry a significant degree of risk or unique acceptance criteria that would require a dependency on the performance of future services.

We determine the relative selling price for a discovery services deliverable based on its VSOE, if available, or its best estimate of selling price, if VSOE is not available. We have determined that third-party evidence is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. We allocate revenue to the various units of accounting in our arrangements based on the BESP for each unit of accounting, which are consistent with the stated prices in those arrangements.

Our discovery services arrangements do not include any substantive general rights of return or other contingencies.

Sales and value added taxes collected from clients are not considered revenue and are included in accrued liabilities in our consolidated balance sheets until remitted to the taxing authorities.

Patent Assets, Net
We generally acquire patent assets from third parties using cash. Patent assets are recorded at fair value at acquisition. The fair value of the assets acquired is generally based on the fair value of the consideration exchanged. The asset value includes the cost of external legal and other fees associated with the acquisition of the assets. Costs incurred to maintain and prosecute patents and patent applications are expensed as incurred.

Because each client generally receives a license to the majority of our patent assets, we are unable to reliably determine the pattern over which our patent assets are consumed. As a result, we amortize each patent asset on a straight-line basis. The amortization period is equal to the asset’s estimated economic useful life. Estimating the economic useful life of patent assets requires significant management judgment. We consider various factors in estimating the economic useful lives of our patent assets, including the remaining statutory life of the underlying patents, the applicability of the assets to future clients, the vesting period for current clients to obtain perpetual licenses to such patent assets, any contractual commitments by clients that are related to such patent assets, our estimate of the period of time during which we may sign subscription agreements with prospective clients that may find relevance in the patent assets, and the remaining contractual term of our existing clients at the time of acquisition. In certain instances, where we acquire patent assets and secure related client committed cash flows that extend beyond the statutory life of the underlying patents, the useful life may extend beyond the statutory life of the patent assets. As of December 31, 2017, the estimated economic useful life of our patent assets generally ranged from 24 to 60 months. The weighted-average estimated economic useful life of patent assets acquired since inception was 38 months. The weighted-average estimated economic useful life of patent assets acquired during the year ended December 31, 2017 was 25 months. We periodically evaluate whether

events and circumstances have occurred that may warrant a revision to the remaining estimated useful life of our patent assets.

In some instances, we accept a payment from a client to finance part or all of an acquisition involving patent assets that may cost more than we are prepared to spend with our own capital resources or that are relevant only to a very small number of clients. In these instances, we facilitate syndicated transactions that include cash contributions from participating clients in addition to their annual subscription fees.

In instances where we sell patent assets, the amount of consideration received is compared to the asset’s carrying value to determine and recognize a gain or loss on the sale.

Foreign Currency Accounting
The functional currencies of our international subsidiaries are the U.S. dollar and British pound sterling. Our primary foreign subsidiary uses the local currency of its respective country as its functional currency. Assets and liabilities are translated into U.S. dollars using exchange rates prevailing at the balance sheet date, while revenues and expenses are translated at average exchange rates during the year. Gains and losses resulting from the translation of our consolidated balance sheet are recorded as a component of accumulated other comprehensive income (loss).

Gains and losses from foreign currency transactions are recognized in other income (expense), net in the consolidated statements of operations.

Stock-Based Compensation
We account for stock-based compensation for equity-settled awards issued to employees and directors under ASC 718, Compensation-Stock Compensation (“ASC 718”). ASC 718 requires that stock-based compensation expense for equity-settled awards made to employees and directors be measured based on the estimated grant date fair value and recognized over the requisite service period. These equity-settled awards include stock options, restricted stock units (“RSUs”), and performance-based RSUs which include a service condition, some of which also include a market condition or performance condition (“PBRSUs”).

The fair value of stock options is estimated as of the date of grant using the Black-Scholes option-pricing model. The fair value of RSUs is estimated based on the fair market value of our common stock on the date of grant. For stock options and RSUs, the fair value of the award is recognized as compensation expense on a straight-line basis over the requisite service period. Through 2016, forfeitures were estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Starting in 2017, forfeitures are recognized as they occur as a reduction to compensation expense.

The fair value of PBRSUs with performance conditions is estimated as of the grant date by reference to the fair value of the underlying shares on the date of grant. The fair value of PBRSUs with market conditions is estimated as of the date of grant using the Monte-Carlo simulation model. For PBRSUs, stock-based compensation expense is recognized over the derived service period for each tranche (or market or performance condition). Because our PBRSUs have multiple derived service periods, we use the graded-vesting attribution method. The graded vesting attribution method requires a company to recognize compensation expense over the requisite service period for each vesting tranche of the award as though the award were, in substance, multiple awards. The compensation expense for PBRSUs with market conditions will only be reversible if the employee terminates prior to completing the requisite service periods for these awards (i.e., compensation expense will not be reversed if the market condition is not met). For PBRSUs that include performance conditions, we only recognize compensation expense for those awards for which vesting is determined to be probable upon satisfaction of certain performance criteria.

Estimates of the fair value of equity-settled awards as of the grant date using valuation models, such as the Black-Scholes option-pricing model and a Monte-Carlo simulation model, are affected by assumptions regarding a number of complex variables. Changes in the assumptions can materially affect the fair value and ultimately how much stock-based compensation expense is recognized. These inputs are subjective and generally require significant analysis and judgment to develop. We calculate the expected term for stock options based on historical exercise patterns and post-vesting termination behavior. Volatility is calculated based on the implied volatility of our publicly traded stock. The risk-free interest rate is based on the yield available on U.S. Treasury zero-coupon issues similar in duration to the expected term of the equity-settled award.


As of December 31, 2017, there was $25.4 million of unrecognized compensation cost related to RSUs, including PBRSUs, which is expected to be recognized over a weighted-average period of 2.5 years. Compensation costs related to stock options have been fully recognized.

Income Taxes
We account for income taxes using an asset and liability approach, which requires the recognition of deferred tax assets or liabilities for the tax-effected temporary differences between the financial reporting and tax bases of our assets and liabilities and for net operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The measurement of deferred tax assets is reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are not expected to be realized.

We assess the likelihood that our deferred tax assets will be recovered from future taxable income, and to the extent we believe that recovery is not likely, we establish a valuation allowance. Judgment is required in determining our provision for income taxes, deferred tax assets and liabilities, and any valuation allowance recorded against the net deferred tax assets. We applied a valuation allowance of $2.8 million and $0.9 million against our deferred tax balances at December 31, 2017 and 2016, respectively.

The calculation of our tax liabilities involves uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across our global operations. ASC 740, Income Taxes (“ASC 740”) provides that a tax benefit from an uncertain tax position may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. ASC 740 also provides guidance on measurement, derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition.

We recognize tax liabilities in accordance with ASC 740 and adjust these liabilities when our judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from our current estimate of the tax liabilities. These differences will be reflected as increases or decreases to income tax expense in the period in which new information is available.

The tax expense or benefit for extraordinary items, unusual or infrequently occurring items and items that do not represent a tax effect of current-year ordinary income are treated as discrete items and recorded in the interim period in which the events occur.

Our effective tax rate could be adversely affected by changes in federal, state or foreign tax laws, certain non-deductible expenses arising from stock-based awards and changes in accounting principles. Our 2013 through 2017 tax periods are open to examination by the Internal Revenue Service and most state tax authorities. The Internal Revenue Service's examination of Inventus's federal income tax return for fiscal year 2013 was closed during the three months ended March 31, 2017 with no material adjustments. Our 2015 through 2016 tax periods remain open to examination in the United Kingdom.

Business Combinations
We apply the provisions of ASC 805, Business Combinations (“ASC 805”), in the accounting for our business acquisitions. ASC 805 requires companies to separately recognize goodwill from the assets acquired and liabilities assumed, which are at their acquisition date fair values. Goodwill as of the acquisition date represents the excess of the purchase price over the fair values of the assets acquired and the liabilities assumed.

We use significant estimates and assumptions, including fair value estimates, to determine fair value of assets acquired, liabilities assumed and, when applicable, the related useful lives of the acquired assets, as of the business combination date. When those estimates are provisional, we refine them as necessary during the measurement period. The measurement period is the period after the acquisition date, not to exceed one year, in which we may gather new information about facts and circumstances that existed as of the acquisition date to adjust the provisional amounts recognized. Measurement period adjustments are applied retrospectively. All other adjustments are recorded within the consolidated statements of operations.

Impairment of Long-Lived Assets
We assess the recoverability of our long-lived assets, which includes our patent assets, other intangible assets and property and equipment, when events or changes in circumstances indicate their carrying value may not be recoverable.

Such events or changes in circumstances may include: a significant adverse change in the extent or manner in which a long-lived asset is being used, a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of a long-lived asset, current or future operating or cash flow losses that demonstrate continuing losses associated with the use of a long-lived asset or a current expectation that, more-likely-than-not, a long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. We license a majority of our portfolio of patent assets to all of our membership clients and thus we view these assets as a single asset group. We assess recoverability of a long-lived asset by determining whether the carrying value of these assets can be recovered through projected undiscounted cash flows. If the carrying value of the assets exceeds the forecasted undiscounted cash flows, an impairment loss is recognized, and is recorded as the amount by which the carrying value exceeds the estimated fair value. An impairment loss is charged to operations in the period in which we determine such impairment. To date, no impairments of long-lived assets have been identified.

Goodwill
We review goodwill for impairment annually or more frequently if events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. A company may first assess the qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the quantitative goodwill impairment. If the quantitative goodwill impairment test is performed, we compare the fair value of the reporting unit with its carrying amount. Such valuations require us to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired and current clients, acquired technology, and trade names from a market participant perspective, useful lives, and discount rates. If the carrying amount of a reporting unit exceeds its fair value, any excess of the goodwill carrying amount over the implied fair value is recognized as an impairment charge, and the carrying value of goodwill is written down to fair value.

We performed our 2017 annual goodwill impairment test using a quantitative approach for our discovery services reporting units and a qualitative approach for our patent risk management business. The quantitative approach used for our discovery services segment includes comparing the carrying value to the fair values of each reporting unit using a discounted cash flow methodology with a comparable business approach which utilizes Level 3 inputs. Cash flow projections are based on our estimates of growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on the weighted-average cost of capital adjusted for the relevant risk associated with business-specific characteristics and the uncertainty related to the reporting units' ability to execute on the projected cash flows.These tests resulted in the carrying values of our discovery services reporting units exceeding the fair values primarily due to (1) decreased expected future cash flows from pricing pressures and competition in the discovery services marketplace as well as significant fluctuations due to the project-based nature of these cash flows, and (2) a decrease in estimated peer company values. As a result, we recognized a goodwill impairment loss of $89.0 million in our consolidated statement of operations during the three months ended December 31, 2017. No other goodwill impairment charges were recorded as a part of our annual impairment analyses, however, additional declines in expected cash flows may further impair our goodwill in the future.

Other Assets
Our other assets consist primarily of cost method investments that are long term in nature. We review these investments for recoverability using Level 3 inputs and if a decline in fair value is considered to be other-than-temporary, an impairment loss is recorded in the consolidated statements of operations. During the three months and year ended December 31, 2017, we recorded an impairment loss of $5.0 million related to these cost method investments reducing the recorded value to its new amortized cost basis which represents its estimated fair value of $0.6 million.

Reserves for Known and Incurred but not Reported Claims
Reserves for known and incurred but not reported claims represent estimated claims costs and related expenses for patent infringement liability insurance policies in effect. Reserves for known claims are established based on individual case estimates. We use actuarial models and techniques to estimate the reserve for incurred but not reported claims.

Loss expense for known and incurred but not reported claims are charged to earnings after deducting recoverable amounts under our reinsurance contract. Loss expense for known and incurred but not reported claims associated with policies that we issued on behalf of third party underwriters are charged to earnings for the portion of the underwriting risk that we assume.

Results of Operations
The following table sets forth selected consolidated statements of operations data for each of the periods indicated (in thousands). Our historical results are not necessarily indicative of our results of operations to be expected for any future period.
  Year Ended December 31,
  2017 2016 2015
Revenue      
Patent risk management $252,253
 $266,995
 $291,881
Discovery services 78,204
 66,112
 
Total revenue 330,457
 333,107
 291,881
Cost of revenue      
Patent risk management 161,409
 163,865
 148,858
Discovery services 42,300
 33,397
 
Total cost of revenue 203,709
 197,262
 148,858
Selling, general and administrative expenses      
Patent risk management 63,795
 76,467
 77,428
Discovery services 26,712
 23,990
 
Total selling, general and administrative expenses 90,507
 100,457
 77,428
Impairment losses      
Patent risk management 5,016
 
 
Discovery services 89,035
 
 
Total impairment losses 94,051
 
 
Gain on sale of patent assets, net 
 
 (592)
Operating income (loss)      
Patent risk management 22,033
 26,663
 66,187
Discovery services (79,843) 8,725
 
Total operating income (loss) (57,810) 35,388
 66,187
Interest and other income (expense), net (1,255) (3,079) (688)
Income (loss) before provision for income taxes (59,065) 32,309
 65,499
Provision for income taxes 20,078
 14,074
 26,077
Net income (loss) $(79,143) $18,235
 $39,422


The following table sets forth, for the periods indicated, consolidated statements of operations data as a percentage of total revenue.

  Year Ended December 31,
  2017 2016 2015
Revenue      
Patent risk management 76 % 80 % 100 %
Discovery services 24
 20
 
Total revenue 100
 100
 100
Cost of revenue      
Patent risk management 49
 49
 51
Discovery services 13
 10
 
Total cost of revenue 62
 59
 51
Selling, general and administrative expenses      
Patent risk management 19
 23
 27
Discovery services 8
 7
 
Total selling, general and administrative expenses 27
 30
 27
Impairment losses      
Patent risk management 2
 
 
Discovery services 27
 
 
Total impairment losses 29
 
 
Gain on sale of patent assets, net 
 
 
Operating income (loss)      
Patent risk management 7
 8
 23
Discovery services (24) 3
 
Total operating income (loss) (17) 11
 23
Interest and other income (expense), net 
 (1) 
Income (loss) before provision for income taxes (18) 10
 22
Provision for income taxes 6
 4
 9
Net income (loss) (24)% 6 % 13 %

Years Ended December 31, 2017 and 2016
Revenue
The following table sets forth our total revenue for each of the periods indicated, including revenue by segment (in thousands):
  Year Ended December 31,
  2017 2016
Revenue    
Subscription revenue $246,845
 $255,433
Fee-related revenue 5,408
 11,562
Total patent risk management revenue 252,253
 266,995
Discovery services 78,204
 66,112
Total revenue $330,457
 $333,107
Our revenue for the year ended December 31, 2017 was $330.5 million compared to $333.1 million during the same period a year prior, a decrease of $2.6 million, or 1%. Subscription revenue — which includes membership subscription to our patent risk management services, premiums earned, net of ceding commissions, and management fees from insurance policies — for the year ended December 31, 2017 was $246.8 million compared to $255.4 million for the year ended December 31, 2016. The decrease in subscription revenue was primarily attributable to a net

decrease in membership fees and insurance premiums of $17.6 million from clients who joined our network prior to December 31, 2016, and in certain cases, may no longer be a part of our network as of December 31, 2017. This decrease in subscription revenue was partially offset by a net increase in membership fees and insurance premiums of $9.0 million from new clients who joined our network subsequent to December 31, 2016. As of December 31, 2017 we provided patent risk management services to approximately 450 companies, including those insured under policies sold to venture funds and industry trade associations, as compared to approximately 348 companies as of December 31, 2016.

Discovery revenue, which includes fees generated from data collection, hosting and processing, project management, and document review services, was $78.2 million for the year ended December 31, 2017 compared to $66.1 million in the same period a year prior. The increase in discovery revenue was primarily attributable to an increase of $9.4 million in fees generated from document review services and an increase of $2.6 million in hosting and processing services provided during the year ended December 31, 2017 as compared to the year prior.

Revenue for the year ended December 31, 2017 also included $5.4 million of fee-related revenue as compared to $11.6 million in the same period in 2016. This decrease in fee-related revenue was primarily attributable to a decrease in sale of perpetual licenses.

Cost of Revenue
Our cost of revenue for the year ended December 31, 2017 was $203.7 million compared to $197.3 million during the same period a year prior, an increase of $6.4 million, or 3%. Cost of revenue from our patent risk management services was $161.4 million for the year ended December 31, 2017 compared to $163.9 million for the year ended December 31, 2016. The decrease in cost of revenue from our patent risk management services was primarily attributable to a $3.0 million decrease in patent amortization expense as a result of a decrease in our patent assets acquired during the year ended December 31, 2017 when compared to the prior year period.

Cost of revenue from our discovery services for the year ended December 31, 2017 was $42.3 million compared to $33.4 million during the same period a year prior, an increase of $8.9 million, or 27%. The increase in our cost of revenue from our discovery services was primarily attributable to an increase of $7.0 million in third-party contractor and personnel-related costs, including stock-based compensation, as well as a $0.7 million increase in software license fees during the year ended December 31, 2017 as compared to the year ended December 31, 2016.

Selling, General and Administrative expenses
Our selling, general and administrative expenses for the year ended December 31, 2017 were $90.5 million compared to $100.5 million during the same period a year prior, a decrease of $10.0 million or 10%. Our selling, general and administrative expenses for our patent risk management services for the year ended December 31, 2017 were $63.8 million compared to $76.5 million during the year ended December 31, 2016. This decrease was primarily attributable to an $8.1 million decrease in personnel-related costs, including stock-based compensation, primarily due to executive management changes during the three months ended March 31, 2017 as well as decreases in headcount during the year ended December 31, 2017 as compared to the year ended December 31, 2016. The decrease in our selling, general and administrative expenses for our patent risk management services was also due to a decrease of $2.0 million in professional services fees, $1.5 million decrease in depreciation and amortization on our fixed and intangible assets, and a $0.7 decrease in rent expense and related facility costs.

Selling, general and administrative expenses from our discovery services for the year ended December 31, 2017 were $26.7 million compared to $24.0 million for the year ended December 31, 2016. The increase in selling, general and administrative expense from our discovery services was primarily attributable to a $2.7 million increase in personnel-related costs, including stock-based compensation, due to increases in headcount.

Impairment losses
For the year ended December 31, 2017, our annual goodwill impairment tests resulted in the carrying value of our discovery services reporting units exceeding the fair value primarily due to (1) decreased expected future cash flows from pricing pressures and competition in the discovery services marketplace as well as significant fluctuations due to the project-based nature of these cash flows, and (2) a decrease in estimated peer company values. As a result, we recognized a goodwill impairment loss of $89.0 million in our consolidated statement of operations for the three months ended December 31, 2017. No other goodwill impairment losses were recorded as a part of our annual impairment analyses. During our review of the recoverability of our cost method investments during the year ended

December 31, 2017, we also recognized a $5.0 million impairment loss related to our patent risk management cost method investments due to a decline in fair value that we concluded was other-than-temporary.

Interest and Other Income (Expense), Net
Our interest and other expense, net for the year ended December 31, 2017 was $1.3 million compared to interest and other expense, net of $3.1 million during the same period a year prior, a decrease of $1.8 million. The decrease was primarily due to a $5.1 million increase of realized and unrealized foreign currency gains, a $0.5 million increase in interest income generated from our short-term investments, and a $0.2 million decrease in realized losses on exchange of our short-term investments. These were partially offset by a decrease of $1.9 million in fair value adjustments on our deferred payment obligations, $1.3 million of accelerated debt issuance costs in 2017 as a result of paying down our term debt, a decrease of $0.5 million of gains related to the extinguishment of our deferred payment obligations, and a $0.3 million increase in interest expense incurred on our term debt.

Provision for Income Taxes
Our provision for income taxes was $20.1 million and $14.1 million for the years ended December 31, 2017 and 2016, respectively, an increase of $6.0 million or 43%. This increase was primarily due to increases in our deferred tax expense from the impacts of the Tax Cuts and Jobs Act related to the required remeasurement of our deferred tax assets using the revised federal tax rate of 21% as well as the impact of the deemed repatriation toll charge. Based on available information, we believe it is more-likely-than-not that our deferred tax assets will be fully realized with the exception of a portion related to our generated capital losses and foreign tax credits. Accordingly, we applied a valuation allowance against our net deferred tax assets for these capital losses and foreign tax credits as of December 31, 2017 and 2016.
Years Ended December 31, 2016 and 2015
Revenue
The following table sets forth our total revenue for each of the periods indicated, including revenue by segment (in thousands):
  Year Ended December 31,
  2016 2015
Revenue    
Subscription revenue $255,433
 $269,674
Fee-related revenue 11,562
 22,207
Total patent risk management revenue 266,995
 291,881
Discovery services 66,112
 
Total revenue $333,107
 $291,881

Our revenue for the year ended December 31, 2016 was $333.1 million compared to $291.9 million during the same period a year prior, an increase of $41.2 million, or 14%. Subscription revenue — which includes membership subscription to our defensive patent aggregation services, premiums earned, net of ceding commissions, and management fees from insurance policies — for the year ended December 31, 2016 was $255.4 million compared to $269.7 million for the year ended December 31, 2015. The decrease in subscription revenue was primarily attributable to a net decrease in membership fees and insurance premiums of $20.5 million from clients who joined our network prior to December 31, 2015 and, in certain cases, may no longer be a part of our network as of December 31, 2016. This decrease in subscription revenue was partially offset by a net increase in membership fees and insurance premiums of $6.2 million from new clients who joined our network subsequent to December 31, 2015. As of December 31, 2016 we had a total patent risk management client network of 348 companies as compared to 255 as of December 31, 2015.

Discovery revenue, which includes fees generated from data collection, hosting and processing, project management, and document review services, was $66.1 million for the year ended December 31, 2016 compared to nil in the same period a year prior as we acquired Inventus in January 2016.

Revenue for the year ended December 31, 2016 also included $11.6 million of fee-related revenue as compared to $22.2 million in the same period in 2015. This decrease in fee-related revenue was primarily attributable to the

decrease in success fees earned in connection with syndicated acquisitions as well as a decrease in sale of perpetual licenses.

Cost of Revenue
Our cost of revenue for the year ended December 31, 2016 was $197.3 million compared to $148.9 million during the same period a year prior, an increase of $48.4 million, or 33%. The increase was primarily attributable to the cost of revenue for discovery services of $33.4 million associated with Inventus, which we acquired in January 2016 and therefore has no comparable cost of revenue for the year ended December 31, 2015. The increase in cost of revenue was also attributable to a $16.6 million increase in patent amortization expense as a result of an increase in our patent assets and shorter than historical amortization periods for certain patent assets acquired during the year ended December 31, 2016. Patent assets acquired during the year ended December 31, 2016 had a weighted-average amortization period of 27 months compared with the historical weighted-average since our inception of 41 months. This increase was partially offset by a $1.6 million decrease in expenses incurred to maintain and prosecute patents and patent applications included in our portfolio.

Selling, General and Administrative Expenses
Our selling, general and administrative expenses for the year ended December 31, 2016 were $100.5 million compared to $77.4 million during the same period a year prior, an increase of $23.1 million or 30%. The increase was primarily due to selling, general and administrative expenses of $24.0 million for the year ended December 31, 2016 associated with Inventus, which we acquired in January 2016 and therefore has no comparable selling, general and administrative expenses for the year ended December 31, 2015. This increase was partially offset by a decrease of selling, general and administrative expenses of $0.9 million in the patent risk management business primarily attributable to a $2.7 million decrease in personnel-related costs due to decreases in headcount during the year ended December 31, 2016 as compared to the year ended December 31, 2015 partially offset by a $1.8 million increase in professional services fees.

Interest and Other Income (Expense), Net
Our interest and other expense, net for the year ended December 31, 2016 was $3.1 million compared to interest and other expense, net of $0.7 million during the same period a year prior, an increase of $2.4 million. The increase was primarily due to an increase of $4.5 million related to our deferred payment obligation, a $3.0 million increase of realized and unrealized foreign currency losses, increase of $3.0 million of interest expense incurred primarily in connection with our $100 million five-year term facility which we entered into in February 2016, as well as a $0.2 million decrease in interest income generated from our short-term investments. This increase was partially offset by a decrease of $8.3 million in other expense, net related to our short-term investments.

Provision for Income Taxes
Our provision for income taxes was $14.1 million and $26.1 million for the years ended December 31, 2016 and 2015, respectively. Our effective tax rate, including the impact of discrete benefit items, increased to 44% for the year ended December 31, 2016 compared to 40% for the year ended December 31, 2015, primarily due to increases in reserves for unrecognized tax benefits resulting from state apportionment matters. Based on available information, we believe it is more-likely-than-not that our deferred tax assets will be fully realized with the exception of a portion related to our generated capital losses. Accordingly, we have not applied a valuation allowance against our net deferred tax assets except for a portion related to the generated capital losses at December 31, 2016 and 2015.

Non-GAAP Financial Measures

We supplement our consolidated financial statements presented on a GAAP basis with non-GAAP adjusted EBITDA less net patent spend and free cash flow as we believe that these non-GAAP measures provide useful information about core operating results and thus are appropriate to enhance the overall understanding of our past financial performance and our prospects for the future. We define non-GAAP adjusted EBITDA as net income (loss) exclusive of provision for income taxes, interest and other income (expense), net, non-cash impairment losses, stock-based compensation and related employer payroll taxes, depreciation, and amortization. We define free cash flow as net cash provided by operating activities less capital expenditures including property and equipment and patent assets. We use these non-GAAP measures to evaluate our financial results and trends, allocate internal resources, prepare and approve our annual budget, develop short- and long-term operating plans, and assess the health of our business. We believe these non-GAAP measures may prove useful to investors who wish to consider the impact of certain items when comparing our financial performance with that of other companies. The adjustments to our GAAP results are

made with the intent of providing both management and investors a more complete understanding of our underlying operational results, trends and performance.

There are limitations in using non-GAAP financial measures because non-GAAP financial measures are not prepared in accordance with GAAP and may be different from non-GAAP financial measures used by other companies. The non-GAAP financial measures are limited in value because they exclude certain items that may have a material impact on our reported financial results. In addition, they are subject to inherent limitations as they reflect the exercise of judgment by management about which items are adjusted to calculate our non-GAAP financial measures. Management compensates for these limitations by analyzing current and future results on a GAAP basis as well as a non-GAAP basis and also by providing GAAP measures in our public disclosures.

The presentation of additional information should not be considered in isolation or as a substitute for or superior to financial results determined in accordance with GAAP. Investors are encouraged to review the reconciliation of these non-GAAP measures to their most directly comparable GAAP financial measure and not to rely on any single financial measure to evaluate our business.

The following table sets forth the reconciliation of net income (loss) to non-GAAP adjusted EBITDA less net patent spend and the reconciliation of net cash provided by operating activities to free cash flow for each of the periods indicated (in thousands). Our historical results are not necessarily indicative of our results of operations to be expected for any future period.
  Year Ended December 31,
  2017 2016 2015
Net income (loss) $(79,143) $18,235
 $39,422
Provision for income taxes 20,078
 14,074
 26,077
Interest and other expense, net 1,255
 3,079
 688
Impairment losses 94,051
 
 
Stock-based compensation, including related taxes 14,988
 18,568
 18,015
Depreciation and amortization 168,143
 171,623
 145,835
Non-GAAP adjusted EBITDA 219,372
 225,579
 230,037
Net patent spend (106,010) (117,429) (160,665)
Non-GAAP adjusted EBITDA less net patent spend $113,362
 $108,150
 $69,372
 Year Ended December 31,
 2017 2016 2015
Net cash provided by operating activities$181,478
 $187,256
 $173,223
Purchases of property and equipment(1,316) (3,667) (2,163)
Acquisitions of patent assets(106,343) (116,742) (132,834)
Free cash flow$73,819
 $66,847
 $38,226

Liquidity and Capital Resources
We have financed substantially all of our operations and patent asset acquisitions through subscription and other fees collected from our clients, patent-seller financing, the sale of equity securities, and from borrowing through term loan facilities. As of December 31, 2017, we had $138.7 million of cash and cash equivalents and $18.5 million in short-term investments. In January 2016, we paid aggregate consideration of $232 million in cash, net of working capital adjustments, at the closing of the Inventus transaction. On February 26, 2016, we entered into a credit agreement for a $100 million five-year term facility and a $50 million five-year revolving credit facility. During the year ended December 31, 2017, we paid the total balance outstanding on the term facility and terminated the credit agreement and therefore, as of December 31, 2017, we had no outstanding obligations under either the term loan or credit agreement. Further information regarding our term facility and credit agreement can be found in Note 11 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report on Form 10-K.


We believe our existing cash, cash equivalents and short-term investments will be sufficient to meet our working capital and capital expenditure needs for the foreseeable future. Our future capital needs will depend on many factors, including, among other things, our acquisition of patent assets, addition and renewal of client membership agreements, growth of our insurance and discovery services businesses, and development of new products and services. We may experience fluctuations in patent acquisition spending as we acquire patent assets that will benefit our clients. Our cash used in investing activities may increase in the future as we acquire additional patent assets. Our cash used in financing activities may increase in the future as we execute our stock repurchase program by purchasing RPX shares and by declaration and payment of our quarterly dividend. Additionally, we may enter into potential investments in, or acquisitions of, complementary businesses which could require us to seek additional debt or equity financing. Additional funds may not be available on terms favorable to us or at all.

The following table sets forth a summary of our cash flows for the periods indicated (in thousands):
 Year Ended December 31,
 2017 2016 2015
Net cash provided by operating activities$181,478
 $187,256
 $173,223
Net cash used in investing activities(36,487) (213,475) (134,868)
Net cash provided by (used in) financing activities(107,086) 32,049
 (21,391)
Foreign-currency effect on cash and cash equivalents694
 (702) 
Net increase in cash and cash equivalents$38,599
 $5,128

$16,964

Cash Flows from Operating Activities
Cash provided by operating activities for the year ended December 31, 2017 was $181.5 million, consisting of adjustments for non-cash items of $292.4 million, changes in working capital and non-current assets and liabilities of $31.7 million, and net loss of $79.1 million. Non-cash adjustments to our net loss primarily consisted of $168.1 million of depreciation and amortization on our patent assets, intangible assets, and property and equipment, impairment losses of $94.1 millionrelated to our discovery services goodwill and our patent risk management cost method investments, $14.6 million of stock-based compensation, $14.5 million due to a net decrease in our deferred taxes, $1.3 million of amortization of premium on investments, and $1.8 million of other non-cash adjustments, all partially offset by an unrealized gain of $2.0 million due to foreign currency fluctuations. The change in working capital and non-current assets and liabilities resulted primarily from a $23.5 million decrease in deferred revenue, a $21.2 million increase in prepaid expenses and other assets due primarily to increases in our prepaid taxes and sundry receivables, and a $1.1 million decrease in accounts payable, partially offset by a $14.1 million decrease in accounts receivable primarily related to a significant patent risk management customer, and a $0.1 million decrease in accrued and other liabilities.

Cash provided by operating activities for the year ended December 31, 2016 was $187.3 million, consisting of adjustments for non-cash items of $181.1 million, changes in working capital and non-current assets and liabilities of $12.1 million, and net income of $18.2 million. Non-cash adjustments to net income primarily consisted of $171.6 million of depreciation and amortization, $18.3 million of stock-based compensation, an unrealized loss of $2.7 million due to foreign currency fluctuations, $2.2 million of amortization of premium on investments, $2.5 million of other non-cash adjustments, and $0.3 million loss on sales and transfers of short-term investments partially offset by a reduction of $14.0 million due to a net increase in our deferred taxes, fair value adjustments on our deferred payment obligations of $1.9 million, and a gain of $0.5 million recognized on the extinguishment of a deferred payment obligation. The change in working capital and non-current assets and liabilities resulted primarily from a $39.7 million increase in accounts receivable, partially offset by a $14.7 million increase in deferred revenue, a $10.3 million decrease in prepaid expenses and other assets, a $1.7 million increase in accrued and other liabilities, and a $0.9 million increase in accounts payable. The increase in accounts receivable was primarily due to an increase of $25.4 million related to a significant patent risk management customer as well as the addition of accounts receivable related to our discovery services business.

Cash Flows from Investing Activities
Cash used in investing activities for the year ended December 31, 2017 was $36.5 million, resulting primarily from $106.3 million used to acquire patent assets and $1.3 million used to acquire property and equipment partially offset by $70.9 million provided by the net sales and maturities of short-term investments.

Cash used in investing activities for the year ended December 31, 2016 was $213.5 million, resulting from $228.5 million used for the acquisition of Inventus, net of cash received, $116.7 million used to acquire patent assets, $10.8 million used for the net purchases of short-term investments, and $3.7 million used to acquire property and equipment. This was

partially offset by $145.9 million received from the sale of investments primarily used to fund the acquisition of Inventus and a $0.3 million decrease in restricted cash.

Cash Flows from Financing Activities
Cash used in financing activities for the year ended December 31, 2017 was $107.1 million, resulting primarily from $96.3 million of payments on our long-term debt including the payoff of this debt in November 2017, $8.3 million used to repurchase our common stock under our share repurchase program, $5.7 million in tax payments for net-share settlements of RSUs and PBRSUs, $2.5 million in payments of dividends to our stockholders, and $0.3 million of cash payments for capital leases, all partially offset by $6.0 million in proceeds from the exercise of stock options.

Cash provided by financing activities for the year ended December 31, 2016 was $32.0 million, resulting from $100.0 million provided by proceeds from the issuance of long-term debt and $3.8 million in proceeds from the exercise of stock options. This cash provided by financing activities was partially offset by $60.1 million used to repurchase our common stock under our share repurchase program, $4.2 million in tax payments for net-share settlements of RSUs and PBRSUs, $3.8 million payments of principal on our long-term debt, $2.0 million used for issuance costs related to our long-term debt, $1.3 million used for a deferred acquisition payment, and $0.5 million of cash payments for capital leases.
Contractual Obligations and Commitments
The following summarizes our non-cancelable minimum payments under contractual obligations and commitments as of December 31, 2017 (in thousands):
  
Less Than
1 Year
 
1 to 3
Years
 
3 to 5
Years
 
More Than
5 Years
 Total
Operating lease commitments(1)
 $3,402
 $3,197
 $459
 $379
 $7,437
(1)     Operating lease commitments are net of total contractual sublease payments of $2.2 million.

We lease office facilities under non-cancelable operating leases that expire at various dates through 2024. Our facility leases generally require us to pay operating costs, including property taxes, insurance and maintenance.

In March 2012, we entered into an amended lease agreement related to our San Francisco, California office space. The amendment, which took effect on May 1, 2013, increased the rentable space to approximately 67,000 total square feet and extended the term through October 2019. In June 2017, we executed an additional amendment to this lease and in accordance with the additional amendment, effective August 2017, we reduced our leased space by approximately 18,000 square feet which reduced our future operating lease commitments at that time by approximately $2.4 million over the remaining lease term. The monthly remaining base rent payments pursuant to this lease are approximately $0.3 million per month through October 2019.

In October 2013, we entered into an agreement to sublease a portion of our San Francisco, California office space. This sublease took effect on February 1, 2014 for a 36-month term through January 2017 and was subsequently renewed through October 2019.

As of December 31, 2017, our total future minimum payments required under non-cancelable operating leases, net of sublease income, is $7.4 million, which is included in the table above.

During the year ended December 31, 2017, we paid the remaining outstanding balance on our Term Facility and terminated the Credit Agreement in full. See further information in Note 11 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report on Form 10-K.

As of December 31, 2017, our reserve for uncertain tax positions was $9.3 million, which includes interest and penalties of $1.8 million, and was classified as a non-current liability. At this time, we are unable to make a reasonably reliable estimate of the timing of payments in individual years in connection with the tax liabilities; therefore, such amounts are not included in the above contractual obligations table.

In the patent sale transactions that we have completed, we agreed to indemnify and hold harmless the buyer for losses resulting from a breach of representations and warranties made by us. The terms of these indemnification agreements are generally perpetual. The maximum amount of potential future indemnification is unlimited. To date, we have not paid any amounts to settle claims or defend lawsuits. We do not indemnify our clients for patent infringement.


In accordance with our amended and restated bylaws and certain contractual obligations, we also indemnify our Board of Directors and certain officers and employees for certain events or occurrences, subject to certain limits, while the director, officer or employee is or was serving at our request in such capacity. The term of the indemnification period is indefinite. The maximum amount of potential future indemnification is unspecified. We have no reason to believe that there is any material liability for actions, events or occurrences that have occurred to date.

Issuer Purchases of Equity Securities
In February 2015, our Board of Directors authorized the repurchase of up to $75.0 million of our outstanding shares of common stock. In March and May 2016, we increased our share repurchase program by $25 million and $50 million, respectively, for a total amount authorized of $150 million. As part of the share repurchase program, shares may be purchased in open market transactions, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Exchange Act. The timing, manner, price and amount of any repurchases will be determined in our discretion and will depend on factors such as cash generation from operations, other cash requirements, economic and market conditions, stock price and legal and regulatory requirements. The share repurchase program does not have an expiration date and may be suspended, terminated or modified at any time for any reason. The repurchase program does not obligate us to acquire any specific number of shares, and all open market repurchases will be made in accordance with Exchange Act Rule 10b-18, which sets certain restrictions on the method, timing, price and volume of open market stock repurchases. As of December 31, 2017, we had repurchased an aggregate of 8.6 million shares of common stock in the open market for $94.6 million under the share repurchase program.

Dividends
In October 2017, we announced we would pay a quarterly cash dividend of $0.05 per share, the first of which was paid on December 5, 2017, to shareholders of record on November 20, 2017. The next quarterly dividend is payable on March 28, 2018, to stockholders of record on March 14, 2018. Our quarterly dividend will reduce our outstanding cash and cash equivalents.
Off Balance Sheet Arrangements
At December 31, 2017, we did not have any relationships with unconsolidated entities or financial partnerships, such as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance-sheet arrangements or other contractually narrow or limited purposes.
Recent Accounting Pronouncements
A full description of recent accounting pronouncements, including the expected dates of adoption and estimated effects on results of operations and financial condition can be found in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report on Form 10-K. Such information is incorporated herein by reference.
Item 7A.Quantitative and Qualitative Disclosures about Market Risk.
Market risk represents the risk of loss that may impact our financial position due to adverse changes in financial market prices and rates. Our market risk exposure is primarily a result of fluctuations in foreign currency exchange rates and interest rates. We do not hold or issue financial instruments for trading purposes.

Foreign Currency Exchange Risk
Our subscription agreements are denominated in U.S. dollars and, therefore, our subscription revenue is not currently subject to significant foreign currency risk. Certain of our discovery services operations are denominated in currencies other than the U.S. dollar, primarily the British pound sterling and the Euro, and therefore these operations are exposed to foreign exchange rate fluctuations. Our expenses are incurred primarily in the United States, with a portion of expenses incurred and denominated in the currencies where our international offices are located. Our results of operations and cash flows are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the British pound sterling, Japanese yen, and Euro relative to the U.S. dollar, including changes due to Brexit. To date, we have not entered into any foreign currency hedging contracts.

Interest Rate Sensitivity
Our exposure to market risk for changes in interest rates relates primarily to our investment portfolio of cash equivalents and short-term investments.


We had cash, cash equivalents and short-term investments of $157.2 million as of December 31, 2017. Our cash balances deposited in U.S. banks are non-interest bearing and insured up to the Federal Deposit Insurance Corporation (“FDIC”) limits. Cash equivalents consist primarily of institutional money market funds, municipal and corporate bonds, U.S. government and agency securities, and commercial paper, all denominated primarily in U.S. dollars. Interest rate fluctuations affect the returns on our invested funds.

As of December 31, 2017, our short-term investments of $18.5 million were primarily invested in municipal and corporate bonds maturing between 90 days and 12 months, U.S. government and agency securities, and commercial paper. As of December 31, 2017, our investments were primarily classified as available-for-sale and, consequently, were recorded at fair value in the consolidated balance sheets with unrealized gains or losses reported as a separate component of stockholders’ equity. We review our investments for impairment when events and circumstances indicate that a decline in the fair value of an asset below its carrying value is other-than-temporary. During the years ended December 31, 2017, 2016, 2015, we realized losses on the sales and exchanges of short-term investments of nil , $0.3 million, and $3.4 million, respectively, and recorded other-than-temporary impairments on our short-term investments of nil,nil, and $5.1 million respectively, which are included in our consolidated statements of operations within other income (expense), net.

If overall interest rates had changed by 10% during the year ended December 31, 2017, the fair value of our investments would not have been materially affected.

Effect of Inflation
We believe that inflation has not had a material impact on our consolidated results of operations for the year ended December 31, 2017. There can be no assurance that future inflation will not have an adverse impact on our consolidated results of operations or financial condition.

Item 8.Consolidated Financial Statements and Supplementary Data.
Index to Consolidated Financial Statements


Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of RPX Corporation

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of RPX Corporation and its subsidiaries as of December 31, 2017 and 2016, and the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2017, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2017 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework(2013)issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Annual Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made

only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

San Jose, California
March 5, 2018

We have served as the Company's auditor since 2009.


RPX Corporation
Consolidated Balance Sheets
(in thousands, except par value data)
  December 31,
  2017 2016
Assets    
Current assets:    
Cash and cash equivalents $138,710
 $100,111
Short-term investments 18,455
 90,877
Restricted cash 249
 500
Accounts receivable, net 51,544
 64,395
Prepaid expenses and other current assets 25,687
 4,524
Total current assets 234,645
 260,407
Patent assets, net 163,048
 212,999
Property and equipment, net 5,090
 6,948
Intangible assets, net 49,087
 56,050
Goodwill 70,756
 151,322
Restricted cash, less current portion 968
 965
Other assets 3,664
 8,337
Deferred tax assets 23,572
 38,261
Total assets $550,830
 $735,289
Liabilities and stockholders’ equity    
Current liabilities:    
Accounts payable $2,225
 $3,197
Accrued liabilities 15,736
 16,798
Deferred revenue 105,150
 118,856
Current portion of long-term debt 
 6,474
Other current liabilities 1,485
 1,484
Total current liabilities 124,596
 146,809
Deferred revenue, less current portion 1,718
 11,552
Deferred tax liabilities 3,657
 4,023
Long-term debt, less current portion 
 88,110
Other liabilities 11,104
 10,514
Total liabilities 141,075
 261,008
Commitments and contingencies (Note 12) 
 
Stockholders’ equity:    
Common stock, $0.0001 par value — 200,000 shares authorized; 49,627 and 48,776 issued and outstanding as of December 31, 2017 and 2016, respectively 5
 5
Additional paid-in capital 376,793
 360,462
Retained earnings 39,411
 130,249
Accumulated other comprehensive loss (6,454) (16,435)
Total stockholders’ equity 409,755
 474,281
Total liabilities and stockholders’ equity $550,830
 $735,289

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Consolidated Statements of Operations
(in thousands, except per share data)

  Year Ended December 31,
  2017 2016 2015
Revenue $330,457
 $333,107
 $291,881
Cost of revenue 203,709
 197,262
 148,858
Selling, general and administrative expenses 90,507
 100,457
 77,428
Impairment losses 94,051
 
 
Gain on sale of patent assets, net 
 
 (592)
Operating income (loss) (57,810) 35,388
 66,187
Interest and other income (expense), net:      
Interest income 1,063
 506
 740
Interest expense (4,540) (3,015) 
Other income (expense), net 2,222
 (570) (1,428)
Total interest and other income (expense), net (1,255) (3,079) (688)
Income (loss) before provision for income taxes (59,065) 32,309
 65,499
Provision for income taxes 20,078
 14,074
 26,077
Net income (loss) $(79,143) $18,235
 $39,422
       
Net income (loss) per share:      
Basic $(1.61) $0.36
 $0.72
Diluted $(1.61) $0.36
 $0.71
Weighted-average shares used in computing net income (loss) per share:      
Basic 49,240
 50,462
 54,432
Diluted 49,240
 51,001
 55,410
       
Dividends declared per common share $0.05
 $
 $

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Consolidated Statements of Comprehensive Income (Loss)
(in thousands)

 Year Ended December 31,
 2017 2016 2015
Net income (loss)$(79,143) $18,235
 $39,422
Other comprehensive income (loss), net of tax:     
Unrealized gains (losses) on available-for-sale investments:     
Unrealized holding gains (losses) arising during the period145
 97
 (572)
Less: reclassification adjustment for losses included in net income
 
 429
Net unrealized gains (losses) on available-for-sale investments, net of tax145
 97
 (143)
Foreign currency translation adjustments9,836
 (16,281) 
Comprehensive income (loss)$(69,162) $2,051
 $39,279

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Consolidated Statements of Stockholders’ Equity
(in thousands)
  Common Stock 
Additional
Paid-in
Capital
 
Retained
Earnings
 Accumulated Other Comprehensive Income (Loss) 
Total
Stockholders’
Equity
  Shares Amount 
Balance at December 31, 2014 54,062
 $5
 $326,280
 $158,868
 $(108) $485,045
Components of comprehensive income, net of tax:            
Net income 
 
 
 39,422
 
 39,422
Unrealized loss on available-for-sale investments, net of tax 
 
 
 
 (143) (143)
Issuance of common stock upon exercise of stock options, vesting of restricted stock units and other common stock issuances 1,420
 
 5,013
 
 
 5,013
Repurchase of common stock (1,993) 
 
 (26,175) 
 (26,175)
Stock-based compensation 
 
 17,728
 
 
 17,728
Tax benefit of equity award deductions 
 
 686
 
 
 686
Tax withholdings related to net share settlements of restricted stock units 
 
 (5,097) 
 
 (5,097)
Balance at December 31, 2015 53,489
 5
 344,610
 172,115
 (251) 516,479
Components of comprehensive income, net of tax:            
Net income 
 
 
 18,235
 
 18,235
Unrealized gain on available-for-sale investments, net of tax 
 
 
 
 97
 97
Foreign currency translation adjustments 
 
 
 
 (16,281) (16,281)
Issuance of common stock upon exercise of stock options, vesting of restricted stock units and other common stock issuances 1,211
 
 3,778
 
 
 3,778
Repurchase of common stock (5,924) 
 
 (60,101) 
 (60,101)
Stock-based compensation 
 
 18,378
 
 
 18,378
Tax benefit of equity award deductions 
 
 (2,119) 
 
 (2,119)
Tax withholdings related to net share settlements of restricted stock units 
 
 (4,185) 
 
 (4,185)
Balance at December 31, 2016 48,776
 5
 360,462
 130,249
 (16,435) 474,281
Components of comprehensive loss, net of tax:            
Net loss 
 
 
 (79,143) 
 (79,143)
Unrealized gain on available-for-sale investments, net of tax 
 
 
 
 145
 145
Foreign currency translation adjustments 
 
 
 
 9,836
 9,836
Issuance of common stock upon exercise of stock options, vesting of restricted stock units and other common stock issuances 1,551
 
 5,964
 
 
 5,964
Repurchase of common stock (700) 
 
 (8,290) 
 (8,290)
Dividends declared 
 
 
 (2,482) 
 (2,482)
Stock-based compensation 
 
 14,642
 
 
 14,642
Cumulative-effect adjustment from adoption of ASU 2016-09 
 
 1,408
 (923) 
 485
Tax withholdings related to net share settlements of restricted stock units 
 
 (5,683) 
 
 (5,683)
Balance at December 31, 2017 49,627
 $5
 $376,793
 $39,411
 $(6,454) $409,755

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Consolidated Statements of Cash Flows
(in thousands)
 Year Ended December 31,
 2017 2016 2015
Operating activities     
Net income (loss)$(79,143) $18,235
 $39,422
Adjustments to reconcile net income (loss) to net cash provided by operating activities:     
Depreciation and amortization168,143
 171,623
 145,835
Stock-based compensation14,599
 18,275
 17,594
Excess tax benefit from stock-based compensation
 (103) (1,593)
Gain on sale of patent assets, net
 
 (592)
Amortization of premium and discount on investments1,273
 2,247
 6,666
Deferred taxes14,451
 (13,951) (13,010)
Unrealized foreign currency (gain) loss(1,957) 2,689
 
Fair value adjustments on deferred payment obligations
 (1,920) (3,887)
Gain on extinguishment of deferred payment obligation
 (463) (3,000)
Impairment losses94,051
 
 5,096
Realized loss on exchange of short-term investments
 290
 3,444
Other1,792
 2,457
 (60)
Changes in assets and liabilities, net of business acquired:     
Accounts receivable14,136
 (39,737) 10,888
Prepaid expenses and other assets(21,168) 10,344
 (17,651)
Accounts payable(1,080) 923
 724
Accrued and other liabilities(80) 1,693
 4,631
Deferred revenue(23,539) 14,654
 (21,284)
Net cash provided by operating activities181,478
 187,256
 173,223
Investing activities     
Purchases of investments(39,491) (70,980) (273,853)
Maturities of investments107,115
 60,143
 254,360
Sales of investments3,300
 145,925
 21,650
Business acquisition, net of cash acquired
 (228,452) (425)
Decrease in restricted cash248
 298
 247
Purchases of property and equipment(1,316) (3,667) (2,163)
Acquisitions of patent assets(106,343) (116,742) (132,834)
Proceeds from sale of patent assets
 
 650
Acquisition of other assets
 
 (2,500)
Net cash used in investing activities(36,487) (213,475) (134,868)
Financing activities     
Repayments of principal on deferred payment obligations
 
 (2,935)
Proceeds from deferred payment obligations
 
 6,270
Proceeds from issuance of term debt
 100,000
 
Payment of debt issuance costs
 (2,003) 
Repayment of principal on term debt(96,250) (3,750) 
Deferred acquisition payment
 (1,320) 
Proceeds from exercise of stock options5,964
 3,766
 4,953
Taxes paid related to net-share settlements of restricted stock units(5,683) (4,185) (5,097)
Excess tax benefit from stock-based compensation
 103
 1,593
Payments of capital leases(345) (461) 
Payments of dividends to stockholders(2,482) 
 
Repurchase of common stock(8,290) (60,101) (26,175)
Net cash provided by (used in) financing activities(107,086) 32,049
 (21,391)
Foreign-currency effect on cash and cash equivalents694
 (702) 
Net increase in cash and cash equivalents38,599
 5,128
 16,964
Cash and cash equivalents at beginning of period100,111
 94,983
 78,019
Cash and cash equivalents at end of period$138,710
 $100,111
 $94,983

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Consolidated Statements of Cash Flows (continued)
(in thousands)

 Year Ended December 31,
 2017 2016 2015
Supplemental disclosures of cash flow information     
Cash paid for interest$2,874
 $2,571
 $
Cash paid for income taxes7,905
 15,078
 23,969
      
Non-cash investing and financing activities     
Change in patent assets purchased and accrued but not paid$333
 $(333) $
Change in fixed assets purchased and accrued but not paid
 565
 
Patent assets and intangible assets received in barter transactions
 381
 2,203
Nonmonetary exchange for investments
 
 5,935

The accompanying notes are an integral part of these consolidated financial statements.

RPX Corporation
Notes to Consolidated Financial Statements

1.Nature of Business
RPX Corporation (also referred to herein as “RPX” or the “Company”) helps companies reduce patent litigation risk and corporate legal expense through two primary service offerings: its patent risk management services and its discovery services.

The Company's patent risk management services help companies reduce patent-related risk and expense through subscription-based services that facilitate more efficient exchanges of value between owners and users of patents compared to transactions driven by actual or threatened litigation. The Company’s patent risk management membership clients pay an annual subscription fee and in return, receive access to substantially all of the Company's patent portfolio as well as an array of services provided throughout their membership. Access to these services is available primarily through discussions with the Company's professionals—particularly client services and its team of patent experts, as well as through a proprietary database, and attendance of regularly scheduled conferences.

In addition to its subscription-based patent risk management services, the Company underwrites patent infringement liability insurance policies to insure against certain costs of litigation. The Company uses a reinsurance subsidiary company to assume a portion of the underwriting risk on the insurance policies that the Company issues on behalf of third party underwriters. To date, the effect of the insurance policies that the Company has assumed through its reinsurance business has not been material to the Company’s results of operations, financial condition, or cash flows.

In January 2016, the Company acquired Inventus Solutions, Inc. ("Inventus"), now a wholly owned subsidiary of the Company, and began offering its discovery services, which consist of technology-enabled services to assist law firms and corporate legal departments manage costs and risks related to the legal discovery process. The Company's discovery services include data hosting and backup, data processing and collection, project management, document review, and traditional document production. All of these services are designed to streamline the administration of litigation, investigations, and regulatory compliance.
2.Basis of Presentation and Significant Accounting Policies
Basis of Presentation
These consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and include the accounts of RPX and its wholly owned subsidiaries. All intercompany transactions have been eliminated.

Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, contingent assets and liabilities, and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of revenues and expenses during the reporting period covered by the consolidated financial statements and accompanying notes. The Company bases its estimates on various factors and information which may include, but are not limited to, history and prior experience, expected future results, new related events and current economic conditions, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from those estimates.
Significant estimates and assumptions made by management include the determination of:
the assumptions and methods used in deriving the fair value of goodwill and long-lived assets;
the estimated economic useful lives of patent assets;
the fair value of assets acquired and liabilities assumed for business combinations;
recognition and measurement of current and deferred income taxes, any related valuation allowances, and uncertain tax positions;
the fair value of stock awards issued;
the assumptions and methods used in deriving the fair value of deferred payment obligations;
the determination of a best estimated selling price of a subscription and patent infringement liability insurance;
the estimated reserves for known and incurred but not reported claims; and

trade receivable allowance for doubtful accounts.

Revenue Recognition
Through December 31, 2017, the Company recognized revenue in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 605, Revenue Recognition (“ASC 605”) and related authoritative guidance, our policy on which is included below. Effective January 1, 2018, the Company began recognizing revenue in accordance with ASC 606 which is explained further below under the heading "Revenue from Contracts with Customers" in this "Basis of Presentation and Significant Accounting Policies" footnote.

Patent Risk Management
The primary source of the Company's revenue from its patent risk management services offering is fees paid by its clients under subscription agreements. The Company believes that the subscription component of its patent risk management service offering comprises a single deliverable and thus it recognizes each subscription fee ratably over the period for which the fee applies. Revenue is recognized net of any discounts or other contractual incentives. The Company starts recognizing revenue when all of the following criteria have been met:
Persuasive evidence of an arrangement exists. All subscription fees are supported by an executed subscription agreement.
Delivery has occurred or services have been rendered. The subscription agreement calls for the Company to provide its patent risk management services over a specific term commencing on the agreement effective date. Because services are not on an individualized basis (i.e., the Company generally performs its services on behalf of all of its clients as opposed to each client individually), delivery occurs automatically with the passage of time. Consequently, the Company recognizes subscription revenue ratably.
Seller’s price to the buyer is fixed or determinable. Each client’s annual subscription fee is based either on a rate card in effect at the time of the client’s initial agreement or through a fixed fee which is risk-adjusted based on the client's specific patent risk profile. A client’s subscription fee on rate card is generally determined using its rate card and its normalized operating income, which is defined as the greater of (i) the average of its operating income for the three most recently reported fiscal years and (ii) 5% of its revenue for the most recently reported fiscal year. The fee for the first year of the agreement is typically determined and invoiced at the time of contract execution. The fee for each subsequent year of the agreement is generally calculated and invoiced in advance prior to each anniversary date of the agreement.
Collectability is reasonably assured. Subscription fees are generally collected on or near the effective date of the agreement and again at or near each anniversary date thereof. The Company does not recognize revenue in instances where collectability is not reasonably assured. Generally, the Company's subscription agreements state that all fees paid are non-refundable.

In some limited instances, the subscription agreement includes a contingency clause, giving one or both parties an option to terminate the agreement and receive a full refund if contingencies are not resolved within a defined time period. In those instances, revenue will not be recognized until the contingency has been satisfied. The revenue earned during the period between the effective date of the agreement and the contingency removal date is recognized on the contingency removal date. Thereafter, revenue is recognized ratably over the remaining subscription term.

The Company's patent risk management clients generally receive a term license to, and a release from all prior damages associated with, patent assets in the Company's portfolio. The term license to each patent asset typically converts to a perpetual license at the end of a contractually specified vesting period, provided that the client is a member at such time. The Company does not view the conversion from term license to perpetual license to be a separate deliverable in its arrangements with its clients because the utility of, access to and freedom to practice the inventions covered by the patent asset is no different between a term and perpetual license.

In some instances, the Company accepts a payment from a client to finance part or all of a patent asset acquisition. We refer to such transactions as syndicated acquisitions. The accounting for syndicated acquisitions can be complex and often requires judgments on the part of management as to the appropriate accounting treatment. In accordance with ASC 605-45, Revenue Recognition: Principal Agent Considerations, in instances where the Company substantively acts as an agent to acquire patent rights from a seller on behalf of clients who are paying for such rights separately from their subscription agreements, the Company may treat the client payments on a net basis. When treated on a net basis, there may be little or no revenue recognized for such contributions, and the basis of the acquired patent rights may exclude the amounts paid by the contributing client based on our determination that the Company is not the principal in these transactions. In these situations, where the Company substantively acts as an

agent, the contributing clients are typically defendants in an active or threatened patent infringement litigation filed by the owner of a patent. The Company's involvement is to assist our clients to secure a dismissal from litigation and a license to the underlying patents.

Key indicators evaluated to determine the Company's role as either principal or agent in the transaction include, among others:
the entity to grant the license of the patent(s) is generally viewed as the primary obligor in the arrangement, given that it owns and controls the underlying patent(s) and thus has the absolute authority to grant and deliver any release from past damages and dismissal from litigation, and typically determines the general terms of the license(s) granted;
the Company's inventory risk in the transaction, which is typically mitigated, as its clients often enter into contractual obligations with the Company prior to or contemporaneous with the Company entering into a contractual obligation with the seller;
the Company has pricing latitude as it negotiates client contributions, however, this latitude is often limited as the economics of the transaction ultimately depend on the sales price set by the seller;
the Company is not involved in the determination of the product or service specification and has no ability to change the product or perform any part of the service in connection with these transactions, as the seller owns the underlying patent(s); and
the Company's credit risk taken on the transaction, which is generally limited as each respective client has a contractually binding obligation, such clients are generally of high credit quality and in some instances, the Company collects the client contribution prior to making a payment to the seller.

In certain syndicated transactions, the Company may recognize revenue upon the sale of licenses to specific patent assets and/or upon completion of the rendering of advisory services.

Revenue recognition for arrangements with multiple deliverables. A multiple-element arrangement may include the sale of a subscription to the Company's patent risk management services and an insurance policy to cover certain costs associated with patent infringement litigation, each of which are individually considered separate units of accounting. Each element within a multiple-element arrangement is accounted for as a separate unit of accounting given that the delivered products have value to the customer on a standalone basis. The Company considers a deliverable to have standalone value if the product or service is sold separately by us or another vendor. The delivery of insurance coverage is not dependent on a client’s subscription to the Company's patent risk management services. While the Company believes its insurance product offering is unique, its clients are able to purchase insurance coverage as a standalone product from other providers. The Company sells the components of its patent risk management services on a standalone basis. To date, the effect of the insurance policies that the Company has assumed through its reinsurance business has not been material to the Company’s results of operations, financial condition, or cash flows.

Multiple deliverables included in an arrangement are separated into different units of accounting and the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. For our patent risk management service offering, we determine the relative selling price for a deliverable based on its best estimate of selling price ("BESP"). We have determined that vendor-specific objective evidence ("VSOE") and third-party evidence ("TPE") are not available for our patent risk management deliverables.

The Company has determined its BESP for a subscription to our patent risk management services based on the following:

List price, which represents the rates listed on our annual rate card. The Company publishes a standard rate card annually. Each client’s subscription fee is typically calculated using the applicable rate card and its normalized operating income, which is defined as the greater of (i) 5% of the client’s most recently reported fiscal year’s revenue, and (ii) the average of the three most recently reported fiscal years’ operating income of the client. Each client’s annual subscription fee is reset annually based on its normalized operating income for its most recently completed fiscal years.


The Company has determined its BESP for its insurance product based on the following:

Actuarially determined factors. Although the Company sells its insurance product both on a standalone basis and as a component of a multiple-element arrangement, the pricing is not affected by the subscription to our patent risk management services. The Company uses an actuarial model that calculates an individual client’s insurance premium based on its projected annual frequency (i.e., number of claims during the policy term) and severity (i.e., the amount which it expects to settle a claim).

Discovery Services
Revenue from the Company's discovery services is primarily generated from the following:
data hosting fees based on data stored and number of users;
fees for month-to-month delivery of services, such as data processing (conversion of data into organized, searchable electronic database), project management and data collection services;
document review services which assist clients in the manual review of data responsive to a legal matter; and
printing and binding services (paper-based services).

The Company enters into agreements pursuant to which the Company offers various discovery services. Clients are generally billed monthly based on contractual unit prices and volumes for services delivered. The agreements are typically for an indefinite period of time, however, they are cancelable at will by either party. The Company is entitled to all fees incurred for services performed. The majority of the Company's discovery services revenue comes from two types of billing arrangements: usage based and fixed fee.

Usage-based arrangements require the client to pay based upon predetermined unit prices and volumes for data hosing, data processing and paper-based services. Project management and review hours are billed based upon the number of hours worked by certain client service professionals at agreed upon rates.

In fixed-fee billing arrangements, the Company agrees to a pre-established monthly fee over a specified term in exchange for various services. The fees are not tied to the attainment of any contractually defined objectives and the monthly fee is nonrefundable.

Based on an evaluation of the discovery services delivered to each client, the Company has determined that each deliverable has stand-alone value to the client as each of the Company’s discovery services can be sold on a stand-alone basis by the Company and the discovery services are available from other vendors. Additionally, discovery services do not carry a significant degree of risk or unique acceptance criteria that would require a dependency on the performance of future services. The Company recognizes revenue from these arrangements based on contractually stated prices. The Company allocates revenue to the various units of accounting in its arrangements based on the best estimate of selling price for each unit of accounting, which are consistent with the stated prices in those arrangements.

Based on an evaluation of the discovery services delivered to each client, the Company determined each deliverable has stand-alone value to the client as each of its discovery services can be sold on a stand-alone basis by the Company and the discovery services are available from other vendors. Additionally, discovery services do not carry a significant degree of risk or unique acceptance criteria that would require a dependency on the performance of future services.

The Company determines the relative selling price for a discovery services deliverable based on its VSOE, if available, or its BESP, if VSOE is not available. The Company has determined that TPE is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. The Company allocates revenue to the various units of accounting in its arrangements based on the BESP for each unit of accounting, which are consistent with the stated prices in those arrangements.

The Company’s discovery services arrangements do not include any substantive general rights of return or other contingencies.

Sales and value added taxes collected from clients are not considered revenue and are included in accrued liabilities in the Company's consolidated balance sheets until remitted to the taxing authorities.


Accounting for Payments to Clients
The Company occasionally agrees to provide payments, discounts or other contractual incentives to clients in exchange for specified consideration. The Company accounts for such contract provisions in accordance with ASC 605-50, Revenue Recognition: Customer Payments and Incentives, which requires the Company to offset the amount of the payment, discount or other contractual incentive against revenue if the Company is unable to demonstrate both receipt of an identifiable benefit and determine the fair value of the benefit received.

Deferred Revenue
The Company generally invoices its patent risk management clients upon execution of a new agreement and prior to their anniversary date for existing agreements. The Company records the amount of fees billed as deferred revenue and recognizes such amounts as revenue ratably over the period for which they apply. The Company typically records deferred revenue when it has the legal right to bill amounts owed and the applicable service period has commenced. In an instance where a term has commenced but the fees have not yet been invoiced, the Company records an unbilled receivable. Deferred revenue that will be recognized during the succeeding 12-month period from the respective balance sheet date is recorded as deferred revenue, current, and the remaining portion is recorded as non-current.

Accounts Receivable
Accounts receivable are recorded at the invoiced amount and are non-interest bearing. The Company maintains an allowance for doubtful accounts to reserve for potentially uncollectible receivables. The allowance for doubtful accounts is based on the expected ability to collect accounts receivable. The Company reviews accounts receivable to identify amounts due from clients which are past due to identify specific clients with known disputes or collectability issues. In determining the allowance for doubtful accounts, the Company makes judgments about the creditworthiness of significant customers based on ongoing credit evaluations. The Company's allowance for doubtful accounts was $0.6 million and $0.9 million as of December 31, 2017 and 2016, respectively.

Concentration of Risk
The Company is subject to concentrations of credit risk principally attributable to cash, cash equivalents, investments, accounts receivable and other receivables. The Company’s non-restricted cash balances deposited in U.S. banks are non-interest bearing and are insured up to the Federal Deposit Insurance Corporation (“FDIC”) limits. Cash equivalents primarily consist of institutional money market funds and municipal bonds denominated primarily in U.S. dollars. Investment policies have been implemented that limit purchases of debt securities to investment-grade securities.

As of December 31, 2017, two clients individually accounted for 15% and 11% of accounts receivable. As of December 31, 2016, one client individually accounted for 39% of accounts receivable. No client accounted for 10% or more of revenue in any of the years ended December 31, 2017, 2016 or 2015.

Fair Value Measurements
The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities, which are required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level 1 – Valuations based on quoted prices in active markets for identical assets or liabilities and readily accessible by the Company at the reporting date.
Level 2 – Valuations based on inputs other than quoted prices included within Level 1 that are observable for assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
Level 3 – Valuations based on inputs that are unobservable.

The carrying amounts of the Company’s financial instruments, which include cash equivalents, short-term investments, accounts receivable, other receivables and accounts payable, approximate their fair values due to their short maturities.

Cash and Cash Equivalents
The Company’s cash and cash equivalents principally consist of commercial paper, institutional money market funds, municipal and corporate bonds, and U.S. government and agency securities denominated primarily in U.S. dollars. Cash equivalents are highly liquid, short-term investments having an original maturity of 90 days or less that are readily convertible to known amounts of cash.

Short-Term Investments
The Company holds short-term investments in municipal and corporate bonds primarily maturing between 90 days and 12 months, commercial paper, and U.S. government and agency securities. The Company considers its investments as available to support current operations. As a result, the Company classifies its investments, including those with stated maturities beyond twelve months, as current assets in the accompanying consolidated balance sheets. The Company primarily classifies these securities as “available-for-sale” and carries them at fair value in the consolidated balance sheets. Unrealized gains or losses are recorded, net of estimated taxes, in accumulated other comprehensive income (loss), a component of stockholders’ equity. Realized gains and losses are recognized upon sale or exchange. The specific identification method is used to determine the cost basis of fixed income securities sold.

The Company periodically evaluates its investments for impairment due to declines in market value considered to be “other-than-temporary.” This evaluation consists of several qualitative and quantitative factors, including the Company’s ability and intent to hold the investment until a forecasted recovery occurs, as well as any decline in the investment quality of the security and the severity and duration of the unrealized loss. In the event of a determination that a decline in market value is other-than-temporary, the Company will recognize an impairment loss, and a new cost basis in the investment will be established. The Company did not record an other-than-temporary impairment on its short-term investments in either year ended December 31, 2017 or 2016 and recorded an other-than-temporary impairment on its short-term investments of $5.1 million in the year ended December 31, 2015.

Property and Equipment, Net
Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using a straight-line method over the estimated useful lives of the related assets, which are generally three to five years. Maintenance and repairs are charged to expense as incurred, and improvements and betterments are capitalized. When assets are retired or otherwise disposed of, the cost and accumulated depreciation are removed from the consolidated balance sheet and any resulting gain or loss is reflected in the consolidated statement of operations in the period realized. Leasehold improvements are amortized on a straight-line basis over the term of the lease, or the useful life of the assets, whichever is shorter.

Internal-Use Software and Website Development Costs
The Company capitalizes development costs related to internal-use software and its website and records such amounts as property and equipment, net, in its consolidated balance sheets. These costs include personnel-related expenses and consultant fees incurred during the application development stages of the project. Costs related to preliminary project activities, minor enhancement and maintenance, and post implementation activities are expensed as incurred. Internal-use software is amortized on a straight-line basis over its useful life, which is generally three years, beginning on the date the software is placed into service. Management evaluates the useful lives of these assets on an annual basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets.

During the years ended December 31, 2017, 2016 and 2015, the Company capitalized $0.8 million, $1.3 million, and $2.3 million, respectively, of internal-use software and website development costs. Amortization of internal-use software was $1.4 million, $1.5 million, $1.1 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Patent Assets, Net
The Company generally acquires patent assets from third parties using cash. Patent assets are recorded at fair value at acquisition. The fair value of the assets acquired is generally based on the fair value of the consideration

exchanged. The asset value includes the cost of external legal and other fees associated with the acquisition of the assets. Costs incurred to maintain and prosecute patents and patent applications are expensed as incurred.

Because each client generally receives a license to the majority of the Company’s patent assets, the Company is unable to reliably determine the pattern over which its patent assets are consumed. As a result, the Company amortizes each patent asset on a straight-line basis. The amortization period is equal to the asset’s estimated economic useful life. Estimating the economic useful life of patent assets requires significant management judgment. The Company considers various factors in estimating the economic useful lives of its patent assets, including the remaining statutory life of the underlying patents, the applicability of the assets to future clients, the vesting period for current clients to obtain perpetual licenses to such patent assets, any contractual commitments by clients that are related to such patent assets, its estimate of the period of time during which the Company may sign subscription agreements with prospective clients that may find relevance in the patent assets, and the remaining contractual term of the Company’s existing clients at the time of acquisition. In certain instances, where the Company acquires patent assets and secures related client committed cash flows that extend beyond the statutory life of the underlying patent assets, the useful life may extend beyond the statutory life of the patent assets. As of December 31, 2017, the estimated economic useful life of the Company’s patent assets generally ranged from 24 to 60 months. The weighted-average estimated economic useful life of patent assets acquired since inception was 38 months. The weighted-average estimated economic useful life of patent assets acquired during the year ended December 31, 2017 was 25 months. The Company periodically evaluates whether events and circumstances have occurred that may warrant a revision to the remaining estimated useful life of its patent assets.

In some instances, the Company accepts a payment from a client to finance part or all of an acquisition involving patent assets that may cost more than the Company is prepared to spend with its own capital resources or that are relevant only to a small number of clients. In these instances, the Company facilitates syndicated transactions that include cash contributions from participating clients in addition to their annual subscription fees.

In instances where the Company sells patent assets, the amount of consideration received is compared to the asset’s carrying value to determine and recognize a gain or loss, which is recorded within gain on sale of patent assets, net in the Company's consolidated statements of operations.

Intangible Assets, Net
Intangible assets, net primarily consists of intangible assets acquired through business combinations. Such assets are capitalized and amortized on a straight-line basis over their estimated useful lives. Intangible assets, net excludes patent related intangible assets, which are recorded within patent assets, net in the consolidated balance sheets.

Impairment of Long-Lived Assets
The Company assesses the recoverability of its long-lived assets, which include patent assets, other intangible assets, and property and equipment, when events or changes in circumstances indicate their carrying value may not be recoverable. Such events or changes in circumstances may include: a significant adverse change in the extent or manner in which a long-lived asset is being used, a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of a long-lived asset, current or future operating or cash flow losses that demonstrate continuing losses associated with the use of a long-lived asset or a current expectation that, more-likely-than-not, a long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The Company licenses a majority of the portfolio of patent assets to all of its membership clients and thus views these assets as a single asset group. The Company assesses recoverability of a long-lived asset by determining whether the carrying value of these assets can be recovered through projected undiscounted cash flows. If the carrying value of the assets exceeds the forecasted undiscounted cash flows, an impairment loss is recognized, and is recorded as the amount by which the carrying value exceeds the estimated fair value. An impairment loss is charged to operations in the period in which management determines such impairment. To date, there have been no impairments of long-lived assets identified.

Goodwill
The Company reviews goodwill for impairment annually or more frequently if events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. A company may first assess the qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying amount as

a basis for determining whether it is necessary to perform the quantitative goodwill impairment. If the quantitative goodwill impairment test is performed, the fair value of the reporting unit is compared to its carrying amount. Such valuations require making significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired and current clients, acquired technology, and trade names from a market participant perspective, useful lives, and discount rates. If the carrying amount of a reporting unit exceeds its fair value, any excess of the goodwill carrying amount over the implied fair value is recognized as an impairment charge, and the carrying value of goodwill is written down to fair value.

The Company performed its 2017 annual goodwill impairment test using a quantitative approach for its discovery services reporting units and a qualitative approach for its patent risk management business. The quantitative approach used for its discovery services segment includes comparing the carrying value to the fair values of each reporting unit using a discounted cash flow methodology with a comparable business approach which utilizes Level 3 inputs. Cash flow projections are based on management’s estimates of growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on the weighted-average cost of capital adjusted for the relevant risk associated with business-specific characteristics and the uncertainty related to the reporting units' ability to execute on the projected cash flows. These tests resulted in the carrying values of the discovery services reporting units exceeding the fair values primarily due to (1) decreased expected future cash flows from pricing pressures and competition in the discovery services marketplace as well as significant fluctuations due to the project-based nature of these cash flows, and (2) a decrease in estimated peer company values. As a result, the Company recognized a goodwill impairment loss of $89.0 million in its consolidated statement of operations during the year ended December 31, 2017. No other goodwill impairment losses were recorded as a part of the Company's annual impairment analyses.

Other Assets
The Company's other assets consist primarily of cost method investments that are long term in nature. The Company reviews these investments for recoverability and if a decline in fair value is considered to be other-than-temporary, an impairment loss is recorded in the consolidated statements of operations. During the year ended December 31, 2017, the Company recorded an impairment loss of $5.0 million related to these cost method investments reducing the recorded value to its new amortized cost basis which represents its estimated fair value of $0.6 million.

Advertising Costs
The Company expenses advertising costs as they are incurred. Advertising expenses were not material for any period presented.

Foreign Currency Accounting
The functional currencies of the Company’s international subsidiaries are the U.S. dollar and British pound sterling. The Company's primary foreign subsidiary uses the local currency of its respective country as its functional currency. Assets and liabilities are translated into U.S. dollars using exchange rates prevailing at the balance sheet date, while revenues and expenses are translated at average exchange rates during the year. Gains and losses resulting from the translation of our consolidated balance sheet are recorded as a component of accumulated other comprehensive income (loss).

Gains and losses from foreign currency transactions are recognized in other income (expense), net in the consolidated statements of operations.

Income Taxes
The Company accounts for income taxes using an asset and liability approach, which requires the recognition of deferred tax assets or liabilities for the tax-effected temporary differences between the financial reporting and tax bases of its assets and liabilities and for net operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The measurement of deferred tax assets is reduced, if necessary, by the amount of any tax benefits that, based on available evidence, are not expected to be realized.

The Company assesses the likelihood that its deferred tax assets will be recovered from future taxable income, and to the extent the Company believes that recovery is not likely, the Company establishes a valuation allowance.

Judgment is required in determining the Company’s provision for income taxes, deferred tax assets and liabilities, and any valuation allowance recorded against the net deferred tax assets.

The calculation of the Company’s tax liabilities involves uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across its global operations. ASC 740, Income Taxes (“ASC 740”) provides that a tax benefit from an uncertain tax position may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. ASC 740 also provides guidance on measurement, derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition.

The Company recognizes tax liabilities in accordance with ASC 740 and adjusts these liabilities when its judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from its current estimate of the tax liabilities. These differences will be reflected as increases or decreases to income tax expense in the period in which new information is available.

The tax expense or benefit for unusual or infrequently occurring items and items that do not represent a tax effect of current-year ordinary income are treated as discrete items and recorded in the interim period in which the events occur.

Stock-Based Compensation
The Company accounts for stock-based compensation for equity-settled awards issued to employees and directors under ASC 718, Compensation-Stock Compensation (“ASC 718”). ASC 718 requires that stock-based compensation expense for equity-settled awards made to employees and directors be measured based on the estimated grant date fair value and recognized over the requisite service period. These equity-settled awards include stock options, restricted stock units (“RSUs”) and performance-based RSUs which include a service condition, some of which also include a market condition or performance condition (“PBRSUs”).

The fair value of stock options is estimated as of the date of grant using the Black-Scholes option-pricing model. The fair value of RSUs is estimated based on the fair market value of the Company’s common stock on the date of grant. For stock options and RSUs, the fair value of an award is recognized as compensation expense on a straight-line basis over the requisite service period. Through 2016, forfeitures were estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Starting in 2017, forfeitures are recognized as they occur as a reduction to compensation expense.

The fair value of PBRSUs that include performance conditions is estimated by reference to the fair value of the underlying shares on the date of grant. The fair value of PBRSUs that include market conditions is estimated as of the date of grant using the Monte-Carlo simulation model. Stock-based compensation expense for PBRSUs is recognized over the derived service period for each tranche (or market or performance condition). Because the Company’s PBRSUs have multiple derived service periods, it uses the graded-vesting attribution method. The graded vesting attribution method requires a company to recognize compensation expense over the requisite service period for each vesting tranche of the award as though the award were, in substance, multiple awards. The compensation expense for PBRSUs with market conditions will only be reversible if the employee terminates prior to completing the requisite service periods for these awards (i.e., compensation expense will not be reversed if the market condition is not met). For PBRSUs that include performance conditions, the Company only recognizes compensation expense for those awards for which vesting is determined to be probable upon satisfaction of certain performance criteria.

Estimates of the fair value of equity-settled awards as of the grant date using valuation models, such as the Black-Scholes option-pricing model and a Monte-Carlo simulation model, are affected by assumptions regarding a number of complex variables. Changes in the assumptions can materially affect the fair value and ultimately how much stock-based compensation expense is recognized. These inputs are subjective and generally require significant analysis and judgment to develop. The Company calculates the expected term for stock options based on historical exercise patterns and post-vesting termination behavior. Volatility is calculated based on the implied volatility of the Company's publicly traded stock. The risk-free interest rate is based on the yield available on U.S. Treasury zero-coupon issues similar in duration to the expected term of the equity-settled award.


Business Combinations
The Company applies the provisions of ASC 805, Business Combinations (“ASC 805”), in the accounting for its business acquisitions. ASC 805 requires companies to recognize goodwill separately from the assets acquired and liabilities assumed, which are valued at their acquisition date fair values. Goodwill as of the acquisition date represents the excess of the purchase price over the fair values of the assets acquired and the liabilities assumed.

The Company uses significant estimates and assumptions, including fair value estimates, to determine fair value of assets acquired, liabilities assumed and, when applicable, the related useful lives of the acquired assets, as of the business combination date. When those estimates are provisional, the Company refines them as necessary during the measurement period. The measurement period is the period after the acquisition date, not to exceed one year, in which the Company may gather new information about facts and circumstances that existed as of the acquisition date to adjust the provisional amounts recognized. Measurement period adjustments are applied retrospectively. All other adjustments are recorded in the consolidated statements of operations.

Reserves for Known and Incurred but not Reported Claims
Reserves for known and incurred but not reported claims represent estimated claims costs and related expenses for patent infringement liability insurance policies in effect. Reserves for known claims are established based on individual case estimates. The Company uses actuarial models and techniques to estimate the reserve for incurred but not reported claims.

Loss expense for known and incurred but not reported claims are charged to earnings after deducting recoverable amounts under our reinsurance contract. Loss expense for known and incurred but not reported claims associated with policies that the Company issued on behalf of third party underwriters are charged to earnings for the portion of the underwriting risk that the Company assumes.

Recent Accounting Pronouncements
In May 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting ("ASU 2017-09") which clarifies the changes to terms or conditions of a share-based payment award that require an entity to apply modification accounting. ASU 2017-09 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2017. Early application is permitted and prospective application is required. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities (“ASU 2017-08”), which shortens the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public entities, ASU 2017-08 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In February 2017, the FASB issued ASU No. 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets: Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. This ASU was issued to clarify the scope of the previous standard and to add guidance for partial sales of nonfinancial assets and is effective for fiscal years and interim periods within those years beginning after December 15, 2017. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment, which simplifies the subsequent measurement of goodwill and eliminates the two-step goodwill impairment test. Under the new guidance, an annual or interim goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and an impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value. The amendment also eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and two-step goodwill impairment test. The ASU is effective prospectively for fiscal years and interim periods within those years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted this ASU for goodwill impairment tests beginning in 2017.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations: Clarifying the Definition of a Business, which provides a more robust framework to use in determining when a set of assets and activities is a business. This ASU is effective prospectively for fiscal years and interim periods within those years beginning after December 15, 2017. The Company will apply this guidance to applicable transactions after the adoption date.

In February 2016 the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”), which requires lessees to put most leases on their balance sheets but recognize the expenses on their income statements in a manner similar to current practice. ASU 2016-02 states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The new standard is effective for interim and annual periods beginning after December 15, 2018 and early adoption is permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements.

Revenue from Contracts with Customers
Through December 31, 2017, the Company recognized revenue in accordance with FASB ASC 605, Revenue Recognition (“ASC 605”) and related authoritative guidance. Effective January 1, 2018, the Company began recognizing revenue in accordance with FASB ASC 606, Revenue from Contracts with Customers ("ASC 606" or the "standard") under which revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. In addition, ASC 606 requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

Two methods of adoption are permitted: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). The Company adopted the standard on January 1, 2018 using the full retrospective method to restate each prior reporting period presented. In preparation for adoption of the standard, the Company implemented internal controls to enable the preparation of financial information and has reached conclusions on key accounting assessments related to the standard.
The new standard’s most significant impact to the Company’s financial information relates to the identification of multiple performance obligations from its patent risk management membership subscription and the timing and amount of recognition for these separable performance obligations. Specifically, the Company recognizes separate performance obligations under ASC 606 for certain discrete patent assets transferred to its membership clients (“catalyst license”) as well as for access to the patent portfolio that clients obtain when becoming a member or renewing membership (“portfolio access license”). The revenue generated from these additional performance obligations is recognized at a point in time under ASC 606. Formerly, under ASC 605, the Company generally recognized membership fees ratably on a gross basis over the term of the customer contract. Therefore, the adoption of ASC 606 increases the variability of revenue recognized from the Company's patent risk management services from period to period as well as reduces revenue and patent assets, and related amortization of these patent assets, previously treated on a gross basis under ASC 605 that are treated on a net basis against patent assets under ASC 606 due to the additional separable performance obligations.
ASC 606 also requires the Company to make significant judgments in determining stand-alone selling price (“SSP”) for each distinct performance obligation. The Company’s patent licenses are not sold or priced separately from its patent risk management service and are sold at a broad range of amounts which is in the form of a bundled membership fee. The Company typically has more than one SSP for the same licenses and services based on a member’s individual perceived patent risk. As such, the Company is required to determine SSP using inputs that are not directly observable. The Company considers all information that is available and maximizes the use of observable inputs in its determination of SSP.

Revenue recognition related to the Company’s discovery services segment and its patent risk management insurance offering is not materially changed under ASC 606.

The adoption of ASC 606 is expected to result in an estimated reduction of revenue of approximately $36 million and $23 million for fiscal years 2017 and 2016, respectively, with a corresponding expected decrease in cost of revenue of approximately $27 million and $32 million for fiscal years 2017 and 2016, respectively. This decrease in revenue and cost of revenue is primarily attributable to a portion of the Company’s catalyst license revenue and patent assets being treated on a net basis under ASC 606 as well as variability in the timing of revenue recognition of the patent licenses being recognized at a point in time. The Company's selling, general and administrative expenses is expected to increase in 2017 by approximately $1 million and decrease in 2016 by approximately $1 million due to the assessment of collectability

as a result of adopting ASC 606. The Company is still assessing the impact of ASC 606 to its provision for income taxes and consolidated balance sheets and expects these impacts to be material.
3.Net Income (Loss) Per Share
Basic and diluted net income (loss) per share are computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed by using the weighted-average number of shares of common stock outstanding during the period, including potentially dilutive shares. Potentially dilutive shares include outstanding stock options, RSUs, and PBRSUs. The dilutive effect of potentially dilutive shares is reflected in diluted earnings per share by application of the treasury stock method. Under the treasury stock method, an increase in the fair value of the Company's common stock can result in a greater dilutive effect from potentially dilutive shares.

The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except for per share data):
 Year Ended December 31,
 2017 2016 2015
Net income (loss) per share:     
Numerator:     
Net income (loss)$(79,143) $18,235
 $39,422
Denominator:     
Basic shares:     
Weighted-average shares used in computing basic net income (loss) per share49,240
 50,462
 54,432
Diluted shares:     
Weighted-average shares used in computing basic net income (loss) per share49,240
 50,462
 54,432
Dilutive effect of stock options and restricted stock units using treasury-stock method
 539
 978
Weighted-average shares used in computing diluted net income (loss) per share49,240
 51,001
 55,410
Net income (loss) per share:     
Basic$(1.61) $0.36
 $0.72
Diluted$(1.61) $0.36
 $0.71

For the years ended December 31, 2017, 2016 and 2015 the following securities were not included in the calculation of diluted shares outstanding, as the effect would have been anti-dilutive (in thousands):
 Year Ended December 31,
 2017 2016 2015
Weighted-average:     
Stock options outstanding901
 
 663
Restricted stock units outstanding740
 2
 263

4.Financial Instruments
The following tables present the Company's financial assets and liabilities measured at fair value on a recurring basis (in thousands):
 December 31, 2017
 Amortized Cost Unrealized Estimated Fair Value Level 1 Level 2
  Gains Losses   
Cash equivalents:           
Commercial paper$13,035
 $
 $
 $13,035
 $
 $13,035
Corporate bonds1,205
 
 
 1,205
 
 1,205
Money market funds52,267
 
 
 52,267
 52,267
 
Municipal bonds13,060
 
 
 13,060
 
 13,060
U.S. government and agency securities13,101
 
 
 13,101
 
 13,101
 $92,668
 $
 $
 $92,668
 $52,267
 $40,401
Short-term investments:           
Commercial paper$1,994
 $
 $
 $1,994
 $
 $1,994
Corporate bonds3,074
 
 (3) 3,071
 
 3,071
Municipal bonds11,888
 
 (3) 11,885
 
 11,885
U.S. government and agency securities1,508
 
 (3) 1,505
 
 1,505
 $18,464
 $
 $(9) $18,455
 $
 $18,455

 December 31, 2016
 Amortized Cost Unrealized Estimated Fair Value Level 1 Level 2
  Gains Losses   
Cash equivalents:           
Money market funds$30,286
 $
 $
 $30,286
 $30,286
 $
Municipal bonds3,070
 
 
 3,070
 
 3,070
 $33,356
 $
 $
 $33,356
 $30,286
 $3,070
Short-term investments:           
Commercial paper$4,296
 $
 $(3) $4,293
 $
 $4,293
Corporate bonds10,856
 
 (13) 10,843
 
 10,843
Equity securities123
 
 (78) 45
 45
 
Municipal bonds55,723
 
 (65) 55,658
 
 55,658
U.S. government and agency securities20,033
 9
 (4) 20,038
 20,038
 
 $91,031
 $9
 $(163) $90,877
 $20,083
 $70,794

The Company's financial investments are generally classified as available-for-sale. Available-for-sale securities are reported at fair value, with unrealized gains and losses, net of tax, included as a separate component of stockholders’ equity within accumulated other comprehensive income (loss). During the years ended December 31, 2017, 2016, 2015, the Company realized losses on the sales and exchanges of short-term investments of nil , $0.3 million, and $3.4 million, respectively, and other-than-temporary impairments on its short-term investments of nil,nil, and $5.1 million respectively, which are included in the consolidated statements of operations within other income (expense), net.

As of December 31, 2017 and 2016, approximately 100% and 96%, respectively, of the Company's marketable security investments mature within one year and 0% and 4%, respectively, mature within one to five years. As of December 31, 2017, no individual security incurred continuous unrealized losses for greater than 12 months.

5.Patent Assets, Net
Patent assets, net consisted of the following (in thousands):
 December 31, 2016 Additions Disposals December 31, 2017
Patent assets$932,283
 $106,010
 $(7,857) $1,030,436
Accumulated amortization(719,284) (155,592) 7,488
 (867,388)
Patent assets, net$212,999
     $163,048
 December 31, 2015 Additions Disposals December 31, 2016
Patent assets$824,258
 $117,457
 $(9,432) $932,283
Accumulated amortization(569,698) (158,814) 9,228
 (719,284)
Patent assets, net$254,560
     $212,999

The Company’s acquired patent assets relate to technologies used or supplied by companies in a variety of market sectors, including automotive, consumer electronics, e-commerce, financial services, media distribution, mobile communications, networking, semiconductors, and software. The Company amortizes each acquired portfolio of patent assets on a straight-line basis over its estimated economic useful life. As of December 31, 2017, the estimated economic useful lives of the Company’s patent assets acquired since inception generally ranged from 24 to 60 months with a weighted-average estimated economic useful life at the time of acquisition of 38 months. Patent assets acquired during the year ended December 31, 2017 had a weighted-average estimated economic useful life at the time of acquisition of 25 months.

As of December 31, 2017, the Company expects amortization expense in future periods to be as follows (in thousands):
2018$103,088
201948,232
202011,728
Total estimated future amortization expense$163,048

Amortization expense was $156.0 million, $159.0 million and $142.4 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Syndicated Acquisitions
Syndicated acquisitions are transactions involving patent assets that may cost more than the Company is prepared to spend with its own capital resources and/or that are relevant only to a limited number of clients. In such transactions, the Company may work to acquire these assets with financial assistance from the particular clients against whom they are being or may be asserted. Such clients either pay amounts separate from their subscription fee or, less frequently, lend the Company funds to be used in the transaction. As discussed in the revenue recognition policy in Note 2, "Basis of Presentation and Significant Accounting Policies," the Company may treat the contributions from such clients as revenue on a gross or net basis depending on the specific facts and circumstances of the transaction. In the event that such contributions are recognized on a net basis, the Company will only capitalize the acquired asset that relates to its non-contributing clients. As a result, in such situations the cost basis of the acquired patent rights excludes the amounts paid by the contributing clients.

6.Property and Equipment, Net
Property and equipment, net, consisted of the following (in thousands):
 December 31,
 2017 2016
Internal-use software$8,530
 $7,827
Leasehold improvements2,098
 2,169
Computer, equipment and software5,960
 5,204
Furniture and fixtures755
 935
Construction-in-progress21
 183
Total property and equipment, gross17,364
 16,318
Less: Accumulated depreciation and amortization(12,274) (9,370)
Total property and equipment, net$5,090
 $6,948

Depreciation and amortization expense related to our property and equipment was $3.3 million, $3.0 million and $1.7 million for the years ended December 31, 2017, 2016 and 2015, respectively.
7.Business Combinations
On January 22, 2016, the Company completed its acquisition of all of the issued and outstanding shares of Inventus, to expand into the legal discovery services market. The final purchase price for Inventus was approximately $232 million, net of working capital adjustments, which the Company paid in January 2016. The following table summarizes the cash paid and the estimated fair values of the assets and the liabilities assumed (in thousands) and the estimated useful lives of the acquired identifiable intangible assets:
 Estimated Fair Value Estimated useful life
Current assets$19,357
  
Intangible assets:   
Customer relationships58,000
 9 - 10 years
Trademarks3,200
 1 - 6 years
Developed technology6,400
 3 years
Goodwill145,984
  
Property, plant, equipment and other long term assets3,347
  
Deferred tax asset10,595
  
Current liabilities(7,280)  
Deferred tax liability(5,477)  
Other long term liabilities(826)  
Cash purchase consideration paid$233,300
  


Intangible assets acquired through the Company's acquisition of Inventus are amortized on a straight-line basis which reflects the pattern in which the economic benefits of the intangible assets are expected to be utilized. The goodwill recorded is primarily attributable to the Company's opportunity to expand into the legal discovery services market and is not deductible for tax purposes. For the year ended December 31, 2016, the Company recorded acquisition-related costs of $1.2 million which were expensed as incurred and included in selling, general and administrative expenses in the Company's consolidated statements of operations. The Company has included the following financial results of Inventus in its consolidated financial statements (in thousands):
 Year Ended December 31,
  2016
Discovery Services  
Revenue $66,112
Cost of revenue 33,397
Selling, general and administrative expenses 23,990
Impairment losses 
Operating income $8,725

The unaudited pro forma financial information in the table below summarizes the combined results of operations for the Company and Inventus as though the companies had been consolidated as of January 1, 2015, and includes the accounting effects resulting from the acquisition including amortization charges from the acquired intangible assets, $13.5 million of transaction costs incurred which were directly attributable to the acquisition of Inventus, and elimination of interest expenses and debt issuance and extinguishment costs associated with Inventus's historical debt which was extinguished upon the Company's acquisition of Inventus. This unaudited pro forma information also adjusts for Inventus's acquisition of London-based Unified OS Limited and certain of its affiliates as well as certain assets of Kooby LLP as though it had been consolidated as of January 1, 2015. These accounting effects do not have any impact on the Company's 2017 financial information.

The following unaudited pro forma financial information is for information purposes only and is not necessarily indicative of the results of operations that would have been achieved if the acquisition had taken place as of January 1, 2015 (in thousands, except per share data):
 Year Ended December 31,
 2017 2016
Revenue$330,457
 $336,047
Net income (loss)(79,143) 18,824
Basic net income (loss) per share(1.61) 0.37
Diluted net income (loss) per share(1.61) 0.37
8.Goodwill
The changes in the carrying amounts of goodwill by operating segment were as follows (in thousands):
 Patent Risk Management Discovery Services Total
Balance as of December 31, 2016$19,978
 $131,344
 $151,322
Impairment losses
 (89,035) (89,035)
Foreign currency translation adjustments
 8,469
 8,469
Balance as of December 31, 2017$19,978
 $50,778
 $70,756

The Company reviews goodwill for impairment annually or more frequently if events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. The Company performed its annual goodwill impairment test using a quantitative approach for its discovery services reporting units and a qualitative approach for its patent risk management business. The quantitative approach used for its discovery services segment includes comparing the carrying value to the fair values of each reporting unit using a discounted cash flow methodology with a comparable business approach which utilizes Level 3 inputs. Cash flow projections are based on management’s estimates of growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on

the weighted-average cost of capital adjusted for the relevant risk associated with business-specific characteristics and the uncertainty related to the reporting units' ability to execute on the projected cash flows. These tests resulted in the carrying values of the discovery services reporting units exceeding the fair values primarily due to (1) decreased expected future cash flows from pricing pressures and competition in the discovery services marketplace as well as significant fluctuations due to the project-based nature of these cash flows, and (2) a decrease in estimated peer company values. As a result, the Company recognized a goodwill impairment loss of $89.0 million in its consolidated statement of operations during the year ended December 31, 2017. No other goodwill impairment charges were recorded as a part of the Company's annual impairment analyses.
9.Intangible Assets, Net
Intangible assets, net, as of December 31, 2017 and 2016 consisted of the following (in thousands, except years):
 December 31, 2017 December 31, 2016
 Weighted-Average Life (years) Carrying Amount Accumulated Amortization Net Carrying Amount Carrying Amount Accumulated Amortization Net Carrying Amount
Customer relationships9.4 $56,688
 $(11,764) $44,924
 $55,719
 $(6,323) $49,396
Trademarks6.0 2,900
 (938) 1,962
 4,879
 (2,439) 2,440
Developed technology3.0 6,237
 (4,036) 2,201
 5,802
 (1,978) 3,824
Covenant not to compete
 
 
 
 1,900
 (1,604) 296
Proprietary data and models
 
 
 
 2,100
 (2,006) 94
   $65,825
 $(16,738) $49,087
 $70,400
 $(14,350) $56,050

As of December 31, 2017, the Company expects amortization expense in future periods to be as follows (in thousands):
2018$8,562
20196,644
20206,523
20216,523
20226,069
Thereafter14,766
Total estimated future amortization expense$49,087

Amortization expense related to intangible assets was $8.9 million, $9.6 million, and $1.7 million for the years ended December 31, 2017, 2016 and 2015, respectively.
10.Accrued Liabilities
Accrued liabilities consisted of the following (in thousands):
 December 31,
 2017 2016
Accrued payroll-related expenses$10,669
 $11,516
Accrued other expenses5,067
 5,282
Total accrued liabilities$15,736
 $16,798

11.Debt
On February 26, 2016, the Company entered into a Credit Agreement (the "Credit Agreement") which provided for a $100 million five-year term facility (the "Term Facility") and a $50 million five-year revolving credit facility (the "Revolving Credit Facility"). The Term Facility bore interest which is payable quarterly in arrears at the Company's option equal to either a base rate plus a margin ranging from 1.25% to 1.75% per annum or, at the Company's election, the one-, two-, three-, or six-month London interbank offered rate ("LIBOR") plus a margin ranging from 2.25% to 2.75% per annum, based upon the ratio of the Company's debt to consolidated EBITDA ratio. During the year ended December 31, 2016, the Term Facility bore interest at an average interest rate of 3.0%, which approximated fair value. The Revolving Credit Facility bore a commitment fee on undrawn balances of 0.35% to 0.45% per annum, also based upon the Company's debt to consolidated adjusted EBITDA ratio, that was expensed as incurred. The Company paid down the outstanding balance of the Term Facility in full in November 2017 and terminated the Credit Agreement in December 2017 and therefore as of December 31, 2017, there were no outstanding obligations.
12.Commitments and Contingencies
Operating Lease Commitments
The Company leases its facilities under non-cancelable lease agreements. Certain of these arrangements have free rent, escalating rent payment provisions and tenant allowances. Under such arrangements the Company recognizes rent expense on a straight line basis over the non-cancelable lease term and records the difference between cash rent payments and the recognition of rent expense as a deferred rent liability within other current liabilities and other liabilities for the current and non-current portion, respectively, in the Company's consolidated balance sheets.

In March 2012, the Company entered into an amended lease agreement related to its San Francisco, California office space. The amendment, which took effect on May 1, 2013, increased the rentable space to approximately 67,000 total square feet and extended the term through October 2019. In June 2017, the Company executed an additional amendment to this lease and in accordance with the additional amendment, effective August 2017, the Company reduced its leased space by approximately 18,000 square feet, which reduced the Company's future operating lease commitments at that time by approximately $2.4 million over the remaining lease term.

In October 2013, the Company entered into an agreement to sublease a portion of its San Francisco, California office space. This sublease took effect on February 1, 2014 for a 36-month term through January 2017 and was subsequently renewed through October 2019.

The following table summarizes rent expense related to non-cancelable operating leases (in millions):
 Year Ended December 31,
 2017 2016 2015
Rent expense$6.0
 $5.9
 $4.1
Sublease income1.1
 0.7
 0.6
Rent expense, net of sublease income$4.9
 $5.2
 $3.5

As of December 31, 2017, the future minimum lease payments required under non-cancelable operating leases and the future minimum payments to be received from non-cancelable subleases were as follows (in thousands):
2018$4,528
20193,619
2020654
2021227
2022232
Thereafter379
Future non-cancelable minimum operating lease payments9,639
Less: minimum payments to be received from non-cancelable subleases(2,202)
Total future non-cancelable minimum operating lease payments, net$7,437

Litigation
From time to time, the Company may be a party to various litigation claims in the normal course of business. Legal fees and other costs associated with such actions are expensed as incurred. The Company assesses, in conjunction with

its legal counsel, the need to record a liability for litigation or contingencies. A liability is recorded when and if it is determined that such a liability for litigation or contingencies is both probable and reasonably estimable. No liability for legal contingencies was recorded as of December 31, 2017 or 2016.

In June 2013, Kevin O’Halloran, as Trustee of the Liquidating Trust of Tectonics, Inc. (the “Debtor”), filed a complaint in the U.S. Bankruptcy Court for the Middle District of Florida against the Company and Harris Corporation (the “Defendants”). The complaint alleges that the Defendants are liable under federal and state bankruptcy law regarding fraudulent transfers for the value of a patent portfolio purchased by the Company from Harris Corporation pursuant to an agreement entered into in January 2009, and within four years of the date the Debtor filed its petition in bankruptcy. In February 2015, the Court held a trial and in November 2015 entered judgment in favor of the Defendants. In December 2015, the Debtor filed an appeal of the judgment to the U.S. District Court for the Middle District of Florida. In August 2016, the District Court affirmed the judgment in favor of the Defendants. In September 2016, the Debtor filed an appeal of the judgment to the U.S. Court of Appeals for the Eleventh Circuit. The appellate briefing was completed in January 2017, and oral argument occurred on December 14, 2017. The Company is not currently able to determine whether there is a reasonable possibility that a loss has been incurred, nor can it estimate the potential loss or range of the potential loss that may result from this litigation.

In March 2012, Cascades Computer Innovations LLC filed a complaint in U.S. District Court for the Northern District of California (the “District Court”) against the Company and five of its clients (collectively the “Defendants”). The complaint alleges that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. The complaint further alleged that after the Company terminated its negotiations with the plaintiff to license certain patents held by the plaintiff, the Defendants violated the law by jointly refusing to negotiate or accept licenses under the plaintiff’s patents. The plaintiff sought unspecified monetary damages and injunctive relief. In January 2013, the District Court dismissed the complaint against the Defendants and granted the plaintiff leave to amend its complaint. In February 2013, the plaintiff filed an amended lawsuit alleging that the Defendants violated federal antitrust law, California antitrust law and California unfair competition law. In April 2016, the District Court entered a final judgment in favor of the Defendants on all the plaintiff's claims. In April 2016, the plaintiff filed an appeal of the judgment. On December 11, 2017, the U.S. Court of Appeals for the Ninth Circuit affirmed the District Court in full, and the order took effect on January 2, 2018.

Guarantees and Indemnifications
The Company has, in connection with the sale of patent assets, agreed to indemnify and hold harmless the buyer of such patent assets for losses resulting from breaches of representations and warranties made by the Company. The terms of these indemnification agreements are generally perpetual. The maximum amount of potential future indemnification is unlimited. To date, the Company has not paid any significant amount to settle claims or defend lawsuits. The Company is unable to reasonably estimate the maximum amount that could be payable under these arrangements since these obligations are not capped but are conditional to the unique facts and circumstances involved. Accordingly, the Company had no liabilities recorded for these agreements as of December 31, 2017 or 2016. The Company has no reason to believe that there is any material liability related to such indemnification provisions. The Company does not indemnify its clients for patent infringement.

As part of the Company's discovery services offering, the Company generally warrants that it will perform the services in good faith and in a timely and professional manner, and that it will exercise the same level of professional care commonly found in the industry. Additionally, the Company has agreed to provisions for indemnifying customers against liabilities if its discovery services infringe a third party’s intellectual property rights or if it breaches agreed privacy, security and/or confidentiality obligations. To date, the Company has not incurred any material costs, and it has not accrued any liabilities in the accompanying consolidated financial statements, as a result of these obligations. The Company also enters into service-level agreements with its discovery services clients that specify required levels of application uptime and may permit customers to receive credits or to terminate their agreements in the event that the Company fails to meet required performance levels. To date, the Company has not experienced any significant failures to meet defined levels of performance and, as a result, has not accrued any liabilities related to these agreements in its consolidated financial statements.

In accordance with its amended and restated bylaws, the Company also indemnifies certain officers and employees for losses incurred in connection with actions, suits or proceedings threatened or brought against such officer or employee arising from his or her service to the Company as an officer or employee, subject to certain limitations. The term of the indemnification period is indefinite. The maximum amount of potential future indemnification is unspecified. The Company has no reason to believe that there is any material liability for actions, events or occurrences that have occurred to date.


Reserves for Known and Incurred but not Reported Claims
In August 2012, the Company began offering insurance to cover certain costs of patent litigation brought against its insured clients. As of December 31, 2017 and 2016, the Company recorded a reserve of $1.1 million and $0.9 million, respectively, for known and incurred but not reported claims that represent estimated claim costs and related expenses.

The Company regularly reviews loss reserves using a variety of actuarial techniques and updates them as its loss experience develops.
13.Stockholder's Equity
Common Stock
As of December 31, 2017, under the Company’s amended and restated certificate of incorporation, the Company is authorized to issue 200 million shares of common stock with a par value of $0.0001 per share.

Preferred Stock
As of December 31, 2017, under the Company’s amended and restated certificate of incorporation, the Company is authorized to issue 10 million shares of preferred stock with a par value of $0.0001 per share. The Board of Directors is authorized to provide for the issuance of one or more series of preferred stock and to establish the powers, preferences and rights of the preferred shares.

Equity Plans
In February 2011, the Company’s Board of Directors adopted the 2011 Equity Incentive Plan (the “2011 Plan”), which became effective on the date of the Company’s initial public offering. The 2011 Plan provides for the issuance of incentive stock options, non-qualified stock options, stock appreciation rights, restricted shares of the Company’s common stock and stock units to employees, directors and non-employees. The Board of Directors initially reserved 1,500,000 shares of common stock for future issuance under the 2011 Plan pursuant to automatic increases permitted under the 2011 Plan. During 2017 and 2016, the Company reserved an additional 1,000,000 and 2,000,000 shares, respectively, of common stock for future issuance under the 2011 Plan. As of December 31, 2017, there were 4.7 millionshares available for grant under the 2011 Plan.

In August 2008, the Company’s Board of Directors adopted the 2008 Plan (the “2008 Plan”) which provided for the issuance of incentive stock options, non-qualified stock options, as well as the direct award or sale of shares of common stock to employees, directors and non-employees for up to 9,019,474 shares of common stock, as amended. No further awards have been made under the 2008 Plan since the 2011 plan became effective; however, all awards outstanding under the 2008 Plan will continue to be governed by the existing terms.

Under both the 2011 Plan and 2008 Plan, incentive stock options and non-qualified stock options are to be granted at a price that is not less than 100% of the fair value of the stock at the date of grant. Stock options granted to newly hired employees vest 25% on the first anniversary of the date of hire and ratably each month over the ensuing 36-month period. Stock options granted to existing employees generally vest ratably over the 48-months following the date of grant. Stock options are exercisable for a maximum period of 10 years after date of grant. Incentive stock options granted to stockholders who own more than 10% of the outstanding stock of the Company at the time of grant must be issued at an exercise price not to be less than 110% of the fair value of the stock on the date of grant. RSUs granted to newly hired employees vest 25% on the first Company-established vest date after the first anniversary of the employee’s date of hire and ratably each quarter over the ensuing 12-quarter period. RSUs granted to existing employees generally vest ratably each quarter over the 16 quarters following the date of grant. PBRSUs with market conditions granted to employees may vest 25% on each anniversary of the grant date, provided that the market conditions are satisfied. PBRSUs with performance conditions granted to employees generally vest 25% annually if the performance criteria is satisfied.


A summary of the Company’s activity under its equity-settled award plans and related information is as follows (in thousands, except per share data and years):
   Options Outstanding
 Shares Available for Grant Number of Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life in Years Aggregate Intrinsic Value
Balance - December 31, 20163,586
 1,768
 $11.63
    
Shares authorized1,000
 
 
    
Options exercised
 (690) 8.64
    
Options forfeited99
 (99) 16.16
    
Restricted stock units granted(2,006) 
 
    
Restricted stock units forfeited1,597
 
 
    
Restricted stock units withheld related to net share settlement of restricted stock units452
 
 
    
Balance - December 31, 20174,728
 979
 13.29
 2.6 $2,396
Vested and exercisable - December 31, 2017  979
 13.29
 2.6 2,396
Vested and expected to vest - December 31, 2017  979
 13.29
 2.6 2,396

The aggregate intrinsic value of stock options exercised during the years ended December 31, 2017, 2016 and 2015 was $2.8 million, $0.9 million and $6.8 million, respectively. The total fair value of stock options vested during the years ended December 31, 2017, 2016 and 2015 was nil, $1.3 million and $3.3 million, respectively.

Restricted Stock Units
The summary of restricted stock unit activity, which includes PBRSUs, is as follows (in thousands, except per share data):
  Number of Shares Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value
Non-vested units - December 31, 20163,424
 $11.53
  
Granted2,006
 11.86
  
Vested(1,313) 12.23
  
Forfeited(1,597) 10.73
  
Non-vested units - December 31, 20172,520
 11.95
 $33,874

The total fair value of RSUs vested during the years ended December 31, 2017, 2016 and 2015 was $16.6 million, $11.9 million and $14.4 million, respectively.

In October 2013, the Board of Directors approved net-share settlement for tax withholdings on RSU vesting. In 2017 and 2016, the Company withheld issuing 451,770 and 418,201 shares of its common stock, respectively, based on the value of the RSUs on their vesting dates as determined by the Company’s closing common stock price. Total payments for the employees’ minimum tax obligations to taxing authorities were $5.7 million and $4.2 million for the years ended December 31, 2017 and 2016, respectively, and were recorded as a reduction to additional paid-in capital and reflected as a financing activity within the consolidated statements of cash flows. The net-share settlements reduced the number of shares that would have otherwise been issued on the vesting date and increased the number of shares reserved for future issuance under the 2011 Plan.

Stock-Based Compensation Related to Employees and Directors
The fair value of RSUs granted to employees and non-employee directors is measured by reference to the fair value of the underlying shares on the date of grant.


PBRSUs granted during the years ended December 31, 2017 and 2016 contain service, performance, and/or market conditions that affect the quantity of awards that will vest. PBRSUs granted during the year ended December 31, 2015 contain both service and performance conditions that affect the quantity of awards that will vest. During the years ended December 31, 2017, 2016, and 2015, the Company granted 102,790, 115,657, and 54,375 PBRSUs, respectively. The Company estimates the grant date fair value of PBRSUs which include performance conditions by reference to the fair value of the underlying shares on the date of grant. The Company estimates the grant date fair value of PBRSUs which include market conditions using the Monte Carlo simulation model.

The weighted-average assumptions used to estimate the fair value of PBRSUs with market conditions and the resulting fair values are as follows:
  Year Ended December 31,
  2017 2016 2015
Dividend yield 
 
 n/a
Risk free rate 1.03% 1.08% n/a
Expected volatility 32% 38% n/a
Grant date fair value $11.95
 $6.28
 n/a

Stock-based compensation expense related to stock options granted to employees and non-employee directors was nil, $0.9 million and $2.9 million for the years ended December 31, 2017, 2016 and 2015, respectively. Stock-based compensation expense related to RSUs and PBRSUs granted to employees and non-employee directors was $14.7 million, $17.5 million and $14.9 million for the years ended December 31, 2017, 2016 and 2015, respectively.

As of December 31, 2017, there was $25.4 million of unrecognized compensation cost related to RSUs, including PBRSUs, which is expected to be recognized over a weighted-average period of 2.5 years. Future grants of equity awards will increase the amount of stock-based compensation expense to be recorded.

Stock Repurchase Program
On February 10, 2015, the Company announced that its Board of Directors had authorized a share repurchase program under which the Company is authorized to repurchase up to $75.0 million of its outstanding common stock with no expiration date from the date of authorization. In March 2016 and May 2016, the Company increased its share repurchase program by $25 million and $50 million, respectively, for a total amount authorized of $150 million. As of December 31, 2017, the Company repurchased $94.6 million of the outstanding common stock. Under the program, shares may be purchased in open market transactions, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The share repurchase program does not have an expiration date and may be suspended, terminated or modified at any time for any reason. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. The Company repurchased shares of its common stock in the open market, which were retired upon repurchase. The purchase price for the repurchased shares are reflected as a reduction to common stock and retained earnings in the Company's consolidated balance sheet during the period presented as follows (in thousands, except per share data):
 Shares Repurchased Average Price per Share Value of Shares Repurchased
Cumulative shares repurchased as of January 1, 20177,917
 $10.90
 $86,276
Repurchase of shares of common stock700
 11.84
 8,290
Cumulative shares repurchased as of December 31, 20178,617
 $10.97
 $94,566

Dividends
During 2017, the Company's Board of Directors declared a quarterly cash dividend of $0.05 per share of common stock, the first which was paid on December 5, 2017, to shareholders of record on November 20, 2017.

14.Income Taxes
Income or loss before provision for income tax consists of the following (in thousands):
  Year Ended December 31,
  2017 2016 2015
Domestic $(8,078) $28,536
 $65,445
International (50,987) 3,773
 54
Total income (loss) before provision for income taxes $(59,065) $32,309
 $65,499
The components of the provision for income taxes are as follows (in thousands):
  Year Ended December 31,
  2017 2016 2015
Current:      
Federal $3,886
 $(12,400) $(23,456)
State 207
 (4,038) (2,790)
Foreign (9,743) (11,097) (12,406)
Total current provision for income taxes (5,650) (27,535) (38,652)
Deferred:      
Federal (15,354) 11,596
 12,022
State 238
 1,097
 553
Foreign 688
 768
 
Total deferred benefit (expense) for income taxes (14,428) 13,461
 12,575
Total provision for income taxes $(20,078) $(14,074) $(26,077)

Net deferred tax assets consist of the following (in thousands):
  December 31,
  2017 2016
Deferred tax assets:    
Deferred revenue $2,687
 $1,843
Reserves and other 4,016
 6,292
Stock-based compensation 2,643
 5,682
Depreciation and amortization 10,516
 14,050
Net operating loss carryforwards 1,768
 7,246
Foreign tax credits 1,095
 
Total deferred tax assets 22,725
 35,113
Valuation allowance (2,810) (875)
Net deferred tax assets $19,915
 $34,238

The following is a reconciliation of the statutory federal income tax to the Company’s effective tax (in thousands):
  Year Ended December 31,
  2017 2016 2015
Tax at statutory federal rate $(20,673) $11,307
 $22,939
State tax – net of federal benefit (1,649) 1,674
 1,459
Permanent differences 6,138
 1,000
 663
Foreign tax 27,164
 8,969
 12,370
Foreign tax credits (7,571) (9,191) (12,370)
Foreign income not taxed at federal rate 
 
 3
Change in valuation allowance 2,944
 (222) 1,097
Rate differential impact from Tax Cuts and Jobs Act 14,557
 
 
Other (832) 537
 (84)
Total provision for income taxes $20,078
 $14,074
 $26,077

As of December 31, 2017, the Company had federal and state capital loss carryforwards of $6.5 million available to reduce future taxable income which expire in 2020 if not utilized. As of December 31, 2017, the Company had federal and state net operating loss carryforwards of $18.9 million which will begin to expire in 2023 if not utilized. The utilization of these carryforwards may be limited if there are certain changes in the Company's ownership.

On December 22, 2017, the Tax Cuts and Jobs Act was signed into law. Among other changes is a permanent reduction in the federal corporate income tax rate from 35% to 21% effective January 1, 2018. As a result of the reduction in the corporate income tax rate, the Company was required to remeasure its net deferred tax asset as of December 31, 2017, which resulted in a reduction in the deferred tax asset value of approximately $14.4 million, offset by a change in valuation allowance of $1.0 million, which resulted in a deferred tax expense of $13.4 million.

In transitioning to the new territorial tax system, the Tax Cuts and Jobs Act requires the Company to include certain untaxed foreign earnings of non-U.S. subsidiaries in its taxable income for the year ended December 31, 2017. Such foreign earnings are subject to a one-time transition tax, which was estimated to be $1.1 million as of December 31, 2017, and was recorded within the Company’s provision for income taxes for the year ended December 31, 2017. The Company intends to elect to pay the transition tax over a period of eight years as permitted by the Tax Cuts and Jobs Act.

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which allows the Company to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. Due to the Company’s ongoing analysis and expected guidance and accounting interpretations over the next 12 months, the accounting of the transition tax and net deferred tax asset remeasurements are considered provisional. The Company expects to complete its analysis within the measurement period in accordance with SAB 118.

In assessing the realization of deferred tax assets, the Company considers whether it is more-likely-than-not that some portion or all of deferred assets will not be realized. The ultimate realization of the deferred tax asset is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Based on the available objective evidence as of December 31, 2017, the Company believes it is not more-likely-than-not that the net deferred tax asset related to certain capital losses and foreign tax credits will be fully realized. The Company's valuation allowance (excluding the impact of the Tax Cuts and Jobs Act as discussed above) increased by $1.9 million during the year ended December 31, 2017 due to additional capital losses and foreign tax credits in 2017 which the Company does not expect to be realized.

Internal Revenue Code Section 382 places a limitation (the Section 382 Limitation) on the amount of taxable income that can be offset by net operating loss carryforwards after a change in control (generally greater than 50% change in ownership) of a loss corporation. California has similar rules. Generally, after a change in control, a loss corporation cannot deduct operating loss carryforwards in excess of the Section 382 Limitation. The Company has considered the impact of such limitation in determining the utilization of its operating loss carryforwards against taxable income in future periods.

Deferred tax liabilities have not been recognized for undistributed earnings for foreign subsidiaries because it is the Company's intention to indefinitely reinvest such undistributed earnings outside the U.S. Generally, such earnings are subject to potential foreign withholding tax and the U.S. tax upon remittance of dividends and under certain other circumstances. The Company believes that the potential liability would not be material.

Uncertain Tax Positions
As of December 31, 2017, the Company’s total amount of unrecognized tax benefits was $7.7 million, all of which would impact the Company’s effective tax rate, if recognized.
The following table summarizes the activity related to the Company’s unrecognized tax benefits (in thousands):
  2017 2016 2015
Balance as of January 1, $8,300
 $5,315
 $3,707
Gross increase related to current period tax positions 597
 1,567
 1,606
Gross increase related to prior period tax positions 
 1,841
 2
Gross decrease related to prior period tax positions (1,236) (423) 
Balance as of December 31, $7,661
 $8,300
 $5,315

The Company does not believe it is reasonably possible that its unrecognized tax benefits will materially change within the next twelve months.
The Company’s policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. During the years ended December 31, 2017, 2016 and 2015, the Company recognized $0.1 million, $0.6 million, and $0.4 million, respectively, of interest and penalties associated with unrecognized tax benefits.

The 2013 through 2017 tax periods are open to examination by the Internal Revenue Service and the 2013 through 2017 tax periods remain open to examination by most state tax authorities. The Internal Revenue Service's examination of Inventus's federal income tax return for fiscal year 2013 was closed during the three months ended March 31, 2017 with no material adjustments. The Company's 2015 through 2016 tax periods remain open to examination in the United Kingdom.
15.Related-Party Transactions
During the year ended December 31, 2017, 2016, and 2015, three, four, and four members, respectively, of the Company’s Board of Directors served on the boards of directors of RPX clients.

The Company recognized the following from these clients (in millions):
  Year Ended December 31,
  2017 2016 2015
Revenue $7.4
 $9.8
 $9.3
Selling, general and administrative expenses 0.5
 0.8
 0.3

As of December 31, 2017 and 2016, there were $1.5 million and $1.3 million of receivables due from these clients, respectively.
16.Segment Reporting
Operating segments are components of an enterprise about which separate financial information is available. Operating segments are reported in a manner consistent with the internal reporting provided to the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is its Chief Executive Officer. Prior to the acquisition of Inventus in January 2016, the Company’s Chief Executive Officer reviewed financial information presented on a consolidated basis and, as a result, the Company concluded that there was only one operating and reportable segment. Subsequent to the acquisition of Inventus (see Note 7, "Business Combinations"), the Company's Chief Executive Officer reviews separate financial information for the patent risk management and discovery services businesses. Therefore as of January 2016, the Company has two reportable segments: 1) patent risk management which generates its revenues primarily from membership subscriptions, premiums earned from insurance policies, and management fees for marketing, underwriting, and claim management and 2) discovery services which generates its revenues primarily from fees generated for data collection, hosting and processing, project management, and document review services. There are no material internal revenue transactions between these two reportable segments.

Although adjusted EBITDA and adjusted operating income are not measures of financial performance determined in accordance with GAAP, the Company's chief operating decision maker evaluates segment financial performance by utilizing the segment's adjusted EBITDA and adjusted operating income because the Company believes it is a useful supplemental measure that reflects core operating performance and provides an indicator of the segment's ability to generate cash.

The Company defines adjusted EBITDA as net income (loss) exclusive of provision for income taxes, interest and other income (expense), net, impairment losses, stock-based compensation and related employer payroll taxes, depreciation, and amortization. The Company defines adjusted operating income as GAAP operating income exclusive of non-cash impairment losses. There are limitations in using the Company's measures of financial performance that are not determined in accordance with GAAP and these may be different from other financial measures not determined in accordance with GAAP used by other companies. These financial measures are limited in value because they exclude certain items that may have a material impact on the Company's reported financial results. In addition, they are subject to inherent limitations as they reflect the exercise of judgment by the Company about which items are adjusted to calculate its financial measures not determined in accordance with GAAP. The presentation of financial measures not determined in

accordance with GAAP should not be considered in isolation or as a substitute for, or superior to, financial results determined in accordance with GAAP.

Summarized financial information by segment for the years ended December 31, 2017 and 2016 utilized by the Company's chief operating decision maker is as follows (in thousands):
 Year Ended December 31,
 2017 2016
Patent Risk Management   
Revenue$252,253
 $266,995
Cost of revenue161,409
 163,865
Selling, general and administrative expenses63,795
 76,467
Adjusted operating income27,049
 26,663
Stock-based compensation, including related taxes13,197
 17,633
Depreciation and amortization158,297
 162,262
Adjusted EBITDA$198,543
 $206,558
    
Discovery Services   
Revenue$78,204
 $66,112
Cost of revenue42,300
 33,397
Selling, general and administrative expenses26,712
 23,990
Adjusted operating income9,192
 8,725
Stock-based compensation, including related taxes1,791
 935
Depreciation and amortization9,846
 9,361
Adjusted EBITDA$20,829
 $19,021

The following table reconciles the Company's subtotal segment adjusted EBITDA to consolidated net income (loss) (in thousands):
 Year Ended December 31,
 2017 2016
    
Subtotal segment adjusted EBITDA$219,372
 $225,579
Depreciation and amortization(168,143) (171,623)
Stock-based compensation, including related taxes(14,988) (18,568)
Impairment losses(94,051) 
Interest and other expense, net(1,255) (3,079)
Provision for income taxes(20,078) (14,074)
Net income (loss)$(79,143) $18,235

The following table reconciles the Company's subtotal segment adjusted operating income to consolidated operating income (loss) (in thousands):
 Year Ended December 31,
 2017 2016
    
Subtotal segment adjusted operating income$36,241
 $35,388
Impairment losses(94,051) 
Operating income (loss)$(57,810) $35,388


The following table summarizes total assets by segment (in thousands):
 December 31,
 2017 2016
Patent risk management$388,559
 $501,540
Discovery services (1)
162,271
 233,749
Total assets$550,830
 $735,289
(1) Includes goodwill and intangible assets acquired through the Company's acquisition of Inventus in January 2016.

The Company markets its services to companies around the world. Revenue is generally attributed to geographic areas based on the country in which the client is domiciled. The following table presents revenue by location and revenue generated by country as a percentage of total revenue for the applicable period, for countries representing 10% or more of revenues for one or more of the periods presented (dollars in thousands):
 Year Ended December 31,
 2017 2016 2015
United States$196,454
 59% $194,196
 58% $186,439
 64%
Japan34,844
 11
 37,200
 11
 36,195
 12
Korea18,414
 6
 25,288
 8
 28,319
 10
Rest of world80,745
 24
 76,423
 23
 40,928
 14
Total revenue$330,457
 100% $333,107
 100% $291,881
 100%
17.Selected Quarterly Financial Information (Unaudited)
Summarized quarterly financial information for the years ended December 31, 2017 and 2016 is as follows (in thousands, except per share data):
  Three Months Ended
  March 31,
2017
 June 30,
2017
 September 30,
2017
 December 31,
2017
Revenue $82,512
 $80,434
 $85,702
 $81,809
Cost of revenue 51,298
 51,142
 52,282
 48,987
Selling, general and administrative expenses 21,121
 23,124
 22,517
 23,745
Impairment losses(1)
 


 
 94,051
Operating income (loss) 10,093
 6,168
 10,903
 (84,974)
Interest and other income (expense), net (2)
 (533) 427
 88
 (1,237)
Income (loss) before provision for income taxes 9,560
 6,595
 10,991
 (86,211)
Provision for income taxes 3,567
 2,403
 4,625
 9,483
Net income (loss) $5,993
 $4,192
 $6,366
 $(95,694)
         
Net income (loss) per share(3):
        
Basic $0.12
 $0.09
 $0.13
 $(1.93)
Diluted $0.12
 $0.08
 $0.13
 $(1.93)
         
Other Data:        
Deferred revenue, including current portion $136,227
 $114,561
 $102,939
 $106,868
Stock-based compensation expense $2,734
 $4,343
 $3,798
 $3,724

  Three Months Ended
  March 31,
2016
 June 30,
2016
 September 30,
2016
 December 31,
2016
Revenue $79,735
 $83,109
 $88,461
 $81,802
Cost of revenue 47,666
 49,070
 50,830
 49,696
Selling, general and administrative expenses 26,895
 25,904
 23,615
 24,043
Operating income 5,174
 8,135
 14,016
 8,063
Interest and other income (expense), net (2)
 1,805
 (1,549) (1,250) (2,085)
Income before provision for income taxes 6,979
 6,586
 12,766
 5,978
Provision for income taxes 2,742
 2,436
 4,651
 4,245
Net income $4,237
 $4,150
 $8,115
 $1,733
         
Net income per share(3):
        
Basic $0.08
 $0.08
 $0.16
 $0.04
Diluted $0.08
 $0.08
 $0.16
 $0.03
         
Other Data:        
Deferred revenue, including current portion $139,992
 $123,133
 $102,691
 $130,408
Stock-based compensation expense $4,929
 $4,899
 $4,269
 $4,178
(1) The Company recorded impairment losses related to its discovery services goodwill and patent risk management cost method investments during the three months ended December 31, 2017. See further information in Note 2, "Basis of Presentation and Significant Accounting Policies" and Note 8, "Goodwill."
(2) See Note 12, "Commitments and Contingencies" and Note 11, "Debt" for further information regarding interest and other income (expense), net.
(3) Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

18.Subsequent Event
On March 2, 2018, the Company's compensation committee approved certain severance benefits for certain members of its management team, which will become due if the Company is subject to a change in control (as defined in its 2011 Equity Incentive Plan) within the next 12 months and the individual is subject to an involuntary termination (i.e. termination without cause or resignation for certain good reasons) within 12 months after the change in control. The Company is unable, at this time, to estimate the amount, if any, that will be incurred in relation to these severance benefits, but expects the impact to its consolidated financial statements to be material in the event certain criteria are met.

Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.
None
Item 9A.Controls and Procedures.
Evaluation of Disclosure Controls and Procedures
We maintain a set of disclosure controls and procedures designed to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to our management including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. In accordance with Rule 13a-15(b) of the Exchange Act, as of the end of the period covered by this Annual Report on Form 10-K, an evaluation was carried out under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures, as of the end of the period covered by this Annual Report on Form 10-K, were effective to provide reasonable assurance.

Internal Control over Financial Reporting
Management’s Annual Report on Internal Control Over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2017 based on the guidelines established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes in accordance with U.S. generally accepted accounting principles.

Based on the results of our evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2017.

The effectiveness of our internal control over financial reporting as of December 31, 2017 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in its report which is included in Item 8 of this Annual Report on Form 10-K.

Changes in Internal Control over Financial Reporting
During the quarter ended December 31, 2017, we implemented new controls as part of our efforts to adopt the new revenue recognition standard ASC 606 which was effective for us on January 1, 2018. In particular, we implemented new controls related to monitoring the adoption process, gathering information, and evaluating the analyses used in the development of the disclosures required before the standard's effective date. These controls pertain only to the information included under the heading "Revenue from Contracts with Customers" in Note 2 of the Notes to Consolidated Financial Statements in Part II, Item 8, "Consolidated Financial Statements and Supplementary Data" of this Annual Report. There were no other changes in our internal control over financial reporting during our most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls
Our management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls or procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by management override of the controls. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of

compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.
Item 9B.Other Information.
Change-in-Control Severance Arrangements
On March 2, 2018, our compensation committee approved certain severance benefits for our Chief Executive Officer and Chief Financial Officer, which will become due if we are subject to a change in control (as defined in our 2011 Equity Incentive Plan) within the next 12 months and the individual is subject to an involuntary termination (i.e. a termination without cause or resignation for certain good reasons) within 12 months after the change in control. These severance benefits include cash severance equal to a multiple of base salary and target bonus, paid in installments over a 12-month period, a lump sum payment in lieu of continued health benefits for 12 months, and 100% acceleration of the individual's outstanding equity awards. Pursuant to these arrangements our Chief Executive Officer is eligible to receive 1.5 times his annual base salary and 1.0 times his target annual bonus, and our Chief Financial Officer is eligible to receive 1.25 times his annual base salary and 0.75 times his target annual bonus.

PART III.

Item 10.Directors, Executive Officers and Corporate Governance.

General

Our board of directors currently comprises seven directors divided into three classes with staggered three-year terms. There is currently one director in Class I, three directors in Class II and three directors in Class III. The term of office of our Class I director, Frank E. Dangeard, will expire at the 2018 annual meeting of stockholders. The term of office of our Class II directors, John A. Amster, Geoffrey T. Barker and Steven L. Fingerhood, will expire at this year’s Annual Meeting. The term of office of our Class III directors, Shelby W. Bonnie, Sanford R. Robertson and Thomas O. Ryder, will expire at the 2017 annual meeting of stockholders. There are no family relationships among any of our directors or executive officers. Mr. Barker,We have adopted a Class II director, has notified the board of directors that he will resign from the board of directors effective the date of our 2016 Annual Meeting of Stockholders.
Information regarding our directors, including their age as of April 20, 2016, is set forth below.

Name Age Positions and Offices Held with Company Director Since
John A. Amster 47 Chief Executive Officer; President; Director 2008
Geoffrey T. Barker 54 Executive Director; Director 2008
Shelby W. Bonnie(1)(2) 51 Director 2011
Frank E. Dangeard(1) 58 Director 2014
Steven L. Fingerhood(1)(3) 58 Director 2012
Sanford R. Robertson(2) 84 Director 2011
Thomas O. Ryder(2)(3) 71 Director 2009

(1)Member of the Audit Committee.

(2)Member of the Compensation Committee.

(3)Member of the Nominating and Corporate Governance Committee.

Class I Director (Term Expires in 2018)
Frank E. Dangeard, age 58, has been a director since April 2014. He has been the Managing Partner of Harcourt, an advisory and investment firm, since March 2008. Mr. Dangeard was Chairman and Chief Executive Officer of Thomson, a provider of digital video technologies, solutions and services, from September 2004 to February 2008. From September 2002 to September 2004, he was Deputy CEO of France Telecom, a global telecommunications operator. From 1997 to 2002, Mr. Dangeard was Deputy CEO of Thomson Multimedia and Thomson S.A. and was appointed Deputy Chairman of Thomson Multimedia in 1999. Prior to joining Thomson Multimedia and Thomson S.A., Mr. Dangeard was Managing Director of SG Warburg from 1988 to 1997. Mr. Dangeard also serves on the boards of directors of Atari S.A., Symantec Corporation, and Telenor Group, as well as a number of privately held companies.


He graduated from the École des Hautes Études Commerciales, the Paris Institut d’Études Politiques and holds an L.L.M from Harvard Law School. Our board of directors determined that Mr. Dangeard should serve as a director based on his extensive experience as a senior executive and investor in the technology industry as well as his skills relating to financial statements and accounting matters.

Class II Directors (Terms Expire in 2016)

John A. Amster, age 47, has served as our Chief Executive Officer since March 2010, our Co-Chief Executive Officer from our inception until March 2010, and a director since our inception. Prior to founding our company, Mr. Amster served as the General Manager of Strategic Acquisitions and Vice President of Licensing at Intellectual Ventures, a patent licensing firm, where, from 2005 to 2008, he was responsible for strategic acquisitions of patent portfolios as well as developing Intellectual Ventures’ software and e-commerce licensing programs. From 2003 to 2004, Mr. Amster served as Managing Director and founded the M&A Advisory practice for Ocean Tomo, an intellectual property and brokerage firm. From 1998 to 2003, Mr. Amster served in various positions, most recently as Vice President and Secretary, at InterTrust Technologies, where he worked on intellectual property transactions, merger and acquisition activities and late-stage financing activities. Mr. Amster received a J.D. from Benjamin N. Cardozo School of Law and a B.A. from Middlebury College. Our board of directors determined that Mr. Amster should serve as a director based on his position as an officer of our company, his history as one of our founders and largest stockholders and his experience in the fields of intellectual property and law.

Geoffrey T. Barker, age 54 and a founder of our company, has served as our Executive Director since September 2012, our Chief Operating Officer from March 2010 until September 2012, our Co-Chief Executive Officer from our inception until March 2010 and a director since our inception. Prior to founding our company, Mr. Barker served as Vice President of Licensing at Intellectual Ventures, where he was responsible for the portfolio development and licensing strategy of its software patent portfolio from 2006 to 2008. From 2000 to 2006, Mr. Barker served as founder, Chairman and CEO of Vigilos, Inc., which provided a platform for controlling and managing the physical security systems of large enterprises. Prior to founding Vigilos, Mr. Barker was co-founder and co-CEO of The Cobalt Group from 1995 to 2000. Prior to that, Mr. Barker held positions in trading, research and investment banking with Kidder, Peabody & Company, Salomon Brothers Inc. and Piper Jaffray Incorporated. Mr. Barker has also served as a director of a number of privately held companies. Mr. Barker received an M.B.A. from Columbia University and a B.A. from Tufts University. Our board of directors determined that Mr. Barker should serve as a director based on his position as an officer of our company, his history as one of our founders and largest stockholders and his experience in the fields of technology, finance and intellectual property.
Steven L. Fingerhood, age 58, has been a director of our company since April 2012. Mr. Fingerhood is the managing partner of Technology Opportunity Partners, L.P., a private investment partnership, a position he has held since 2003. Previously, Mr. Fingerhood was the founder of Zero Gravity Technologies Corporation, a developer of


document security solutions, and served as its chairman and Chief Executive Officer until its sale to InterTrust Technologies Corporation in 2001. Prior to that, Mr. Fingerhood founded and was Chief Executive Officer of Direct Language Communications, Inc., a provider of localization services to the technology industry. Mr. Fingerhood also served as the lead independent director of the board of directors of Harris Interactive Inc. until its acquisition by Nielsen Holdings N.V. in February 2014. Mr. Fingerhood received a J.D. from Harvard Law School and an A.B. from Harvard University. Our board of directors determined that Mr. Fingerhood should serve as a director because of his extensive experience as an entrepreneur, investor and senior executive in the technology and business services industries, as well as his skills relating to financial statement and accounting matters.

Class III Directors (Terms Expire in 2017)

Shelby W. Bonnie, age 51, has been a director of our company since January 2011. Mr. Bonnie is a Managing Director of Allen & Company, an investment firm, a position he has held since September of 2012. Previously, Mr. Bonnie was the CEO of Whiskey Media LLC, an online media company, a position he held from June 2007 until February 2012. Mr. Bonnie was a co-founder of CNET Networks, Inc. and was at CNET Networks, Inc. as both an executive and member of the board of directors from 1993 to 2006, including as Chief Executive Officer from March 2000 until October 2006. Prior to joining CNET Networks, Inc., Mr. Bonnie held positions at Tiger Management Corporation, a New York-based investment management firm, Lynx Capital, a private equity fund, and Morgan Stanley & Co. Inc. Mr. Bonnie served as a member of the board of directors of Warner Music Group Corp., a global record company, from November 2005 until July 2011. Mr. Bonnie received a B.S. from the University of Virginia and an M.B.A. from Harvard Business School. Our board of directors determined that Mr. Bonnie should serve as a director based on his extensive experience in the technology industry, as well as his skills relating to financial statement and accounting matters.

Sanford R. Robertson, age 84, has been a director of our company since May 2011. Mr. Robertson has been a partner of Francisco Partners, a technology buyout fund, since 1999. Prior to founding Francisco Partners, Mr. Robertson was the founder and chairman of Robertson, Stephens & Co., a technology investment bank formed in 1978 and sold to BankBoston in 1998. Since the sale, Mr. Robertson has been a technology investor and advisor to several technology companies. Mr. Robertson was also the founder of Robertson, Colman, Siebel & Weisel, later renamed Montgomery Securities, another technology investment bank. Mr. Robertson also serves on the boards of directors of Pain Therapeutics, Inc. and Salesforce.com, Inc. He served on the board of directors of Dolby Laboratories, Inc. from 2003 to 2015. Mr. Robertson received a B.B.A. and an M.B.A. from the University of Michigan. Our board of directors determined that Mr. Robertson should serve as a director based on his extensive experience in investment banking, private equity and capital markets transactions in the technology industry, as well as his service on the boards of other publicly held companies.



Thomas O. Ryder, age 71, has been a director of our company since December 2009. Mr. Ryder has been a director of Starwood Hotels & Resorts Worldwide, Inc. since April 2001, Amazon.com, Inc. since November 2002 and Quad/Graphics, Inc. since July 2010, and was Chairman of the board of directors at Virgin Mobile USA, Inc. from October 2007 to November 2009. Mr. Ryder was Chairman of the board of directors at Reader’s Digest Association, Inc. from April 1998 to December 2007 and was its Chief Executive Officer from April 1998 to December 2005. Mr. Ryder received a B.A. from Louisiana State University. Our board of directors determined that Mr. Ryder should serve as a director based on his experience as a senior executive of a large company, including experience with intellectual property, as well as his customer experience skills and skills relating to financial statement and accounting matters.

Executive Officers

Set forth below is the name, age, and position of each of our executive officers as of April 20, 2016 and certain biographical information for each executive officer.

NameAgePosition
John A. Amster47Chief Executive Officer; President; Director
Geoffrey T. Barker54Executive Director; Director
Robert H. Heath56Chief Financial Officer; Senior Vice President, Finance; Treasurer
Mallun Yen45Executive Vice President
Trevor Campion49CEO, Inventus Solutions, Inc.
Martin E. Roberts55Senior Vice President; General Counsel; Secretary
Steven S. Swank46Senior Vice President, Head of Client Development and Relations

John A. Amster’s and Geoffrey T. Barker’s biographical information may be found above under the heading “Class II Directors.”

Robert H. Heath, age 56, has served as our Chief Financial Officer, Senior Vice President, Finance and Treasurer since January 2015, as our Senior Vice President, Corporate Development since February 2013, and as our Vice President, Corporate Development since March 2011. Prior to joining RPX, Mr. Heath served as Head of Strategy and Acquisitions for Technicolor, a leading supplier of technology and services to media companies, and as Chief Operating Officer and Chief Financial Officer at iBahn, an Internet service provider to the hospitality industry. Earlier in his career, Mr. Heath worked as an investment banker, focusing on technology and growth companies at Kidder Peabody, SG Warburg and Robertson Stephens. Mr. Heath received his A.B. from Harvard University and his M.B.A. from the University of Chicago Booth School of Business.

Mallun Yen, age 45, has served as our Executive Vice President since November 2010. Prior to joining RPX, Ms. Yen served as Vice President of Worldwide Intellectual Property and Deputy General Counsel from 2002 to 2010 at Cisco Systems, Inc. where she was responsible for developing and implementing the company’s strategy to protect,


enhance, defend and capture the value of its intellectual property. Ms. Yen received her B.S. from California Polytechnic State University, San Luis Obispo and her J.D. from UC Berkeley School of Law, Boalt Hall.

Trevor Campion, age 49, has served as the Chief Executive Officer of Inventus Solutions, Inc. since September 2009. Inventus was acquired by RPX on January 22, 2016. Mr. Campion holds a B.A. from Indiana University Bloomington.

Martin E. Roberts, age 55, has served as our Senior Vice President, General Counsel and Secretary since February 2013, and our Vice President, General Counsel and Secretary from October 2010 to February 2013. From July 2007 until October 2010, Mr. Roberts was the Vice President, General Counsel & Secretary of Linden Research, Inc. From January 2006 to July 2007, Mr. Roberts served as Deputy General Counsel of eBay Inc., and from March 2004 to January 2006, he served as Vice President, General Counsel and Secretary of Shopping.com Ltd. Mr. Roberts holds a B.A. from the University of Virginia and a J.D. from the University of Alabama School of Law.

Steven S. Swank, age 46, has served as our Senior Vice President, Head of Client Development and Relations since February 2013, as our Vice President, Head of Client Development and Relations from February 2012 to February 2013, and as our Vice President, Client Relations from July 2010 to February 2012. From May 2006 until June 2010, Mr. Swank served as Vice President of National Account Sales at Comdata Corporation, where he was responsible for maintaining client relationships and developing new business opportunities. Mr. Swank received his B.A. from Bucknell University and his M.B.A. from the University of Chicago Booth School of Business, Singapore.

Election of Officers

Our executive officers are currently elected by our board of directors and serve until their successors are duly elected and qualified, or until their earlier resignation or removal. There are no family relationships among any of our directors or executive officers.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires our directors, executive officers, and certain holders of more than 10% of our common stock to file reports regarding their ownership and changes in ownership of our securities with the SEC and to furnish us with copies of all Section 16(a) reports that they file.

Based solely upon a review of Forms 3 and 4 and amendments thereto furnished to us and written representations provided to us by all of our directors and executive officers and certain of our greater than 10% stockholders, we believe that during the year ended December 31, 2015, our directors, executive officers, and greater than 10% stockholders complied with all applicable Section 16(a) filing requirements.



Code of Business Conduct

Our board of directors has adopted a code of business conduct that applies to eachall of our directors, officers and employees.employees, including our principal executive officer and principal financial officer. The code addresses various topics, including:Code of Business Conduct is posted on our Web site at http://ir.rpxcorp.com/governance.cfm.

complianceWe intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding an amendment to, or waiver from, a provision of this Code of Business Conduct by posting such information on our Web site, at the address and location specified above and, to the extent required by the listing standards of The NASDAQ Stock Market, by filing a Current Report on Form 8-K with applicable laws, rules and regulations;
conflicts of interest;
public disclosure of information;
insider trading;
corporate opportunities;
competition and fair dealing;
gifts;
discrimination, harassment and retaliation;
health and safety;
confidentiality;
protection and proper use of company assets;
payments to government personnel; and
reporting illegal and unethical behavior.the SEC, disclosing such information.

The codeother information required by this item will be contained in our definitive proxy statement to be filed with the SEC in connection with our 2018 annual meeting of business conduct is available on the investor relations sectionstockholders (the “2018 Proxy Statement”), which we expect to file within 120 days of our website at http://ir.rpxcorp.com. The inclusion of our website address in this Amendment does not include or incorporatefiscal year ended December 31, 2017, and is incorporated herein by reference the information on our website into this Amendment.

Any waiver of the code of business conduct for an executive officer or director may be granted only by our board of directors or a committee thereof and must be timely disclosed as required by applicable law. We have also implemented whistleblower procedures that establish formal protocols for receiving and handling complaints from employees. Any concerns regarding accounting or auditing matters reported under these procedures will be communicated promptly to the audit committee.

Board Committees
We have established an audit committee, a compensation committee and a nominating and corporate governance committee. We believe that the composition of these committees meets the criteria for independence under, and the functioning of these committees complies with the applicable requirements of, the Sarbanes-Oxley Act of 2002 and current SEC and Nasdaq rules and regulations. We intend to comply with future requirements as they become applicable to us.


Each committee of our board of directors has a written charter approved by our board of directors. Copies of each charter are available on the investor relations section of our website located at http://ir.rpxcorp.com. The inclusion of our website address in this proxy statement does not include or incorporate by reference the information on our website into this proxy statement.
Each committee has the composition and responsibilities described below.
The following table provides membership and meeting information for each of the committees of the board of directors during 2015:
CommitteeMembersNumber of Meetings in 2015
Audit Committee
Shelby W. Bonnie
Frank E. Dangeard
Steven L. Fingerhood(1)
8
Compensation Committee
Shelby W. Bonnie(1)
Sanford R. Robertson
Thomas O. Ryder
5
Nominating and Corporate Governance Committee
Steven L. Fingerhood
Randy Komisar(1)(2)
Thomas O. Ryder(1)(2)
1

___________________
(1)Chairman of the committee.
(2)Mr. Ryder was appointed as a member of the Nominating and Corporate Governance Committee on April 23, 2015, replacing Mr. Komisar.

The primary responsibilities of each committee are described below.
Audit Committee
Messrs. Bonnie, Dangeard and Fingerhood serve on the audit committee, and Mr. Fingerhood serves as its chairman. Our board of directors annually reviews the Nasdaq listing standards definition of independence for audit committee members and has determined that Messrs. Bonnie, Dangeard and Fingerhood are independent (as independence is currently defined in applicable Nasdaq listing standards for audit committees and Rule 10A-3 promulgated under the Exchange Act).
Our board of directors has determined that Mr. Bonnie is an audit committee financial expert, as defined by the rules promulgated by the SEC. The designation of Mr. Bonnie as an audit committee financial expert does not impose on him any duties, obligations or liability that are greater than those that are generally imposed on him as a member of our audit committee and our board of directors, and his designation as an audit committee financial expert pursuant to this SEC requirement does not affect the duties, obligations or liability of any other member of our audit committee or board of directors.


The audit committee assists our board of directors in fulfilling its legal and fiduciary obligations in matters involving our accounting, auditing, financial reporting, internal control and legal compliance functions by approving the services performed by our independent registered public accounting firm and reviewing their reports regarding our accounting practices and systems of internal accounting controls. The audit committee also oversees the audit efforts of our independent registered public accounting firm and takes actions as it deems necessary to satisfy itself that such firm is independent of management. The audit committee is also responsible for monitoring the integrity of our financial statements and our compliance with legal and regulatory requirements as they relate to financial statements or accounting matters.
Both our independent registered public accounting firm and internal financial personnel regularly meet with, and have unrestricted access to, the audit committee.
Compensation Committee
Messrs. Bonnie, Robertson and Ryder serve on the compensation committee, and Mr. Bonnie serves as its chairman. Our board of directors has determined that Messrs. Bonnie, Robertson and Ryder satisfy the independence requirements of the applicable Nasdaq listing standards and SEC rules and regulations for directors. Each of the members of the compensation committee is a non-employee director, as defined in Rule 16b-3 promulgated under the Exchange Act, and an outside director, as defined in Section 162(m) of the Internal Revenue Code of 1986, as amended.
The compensation committee assists our board of directors in meeting its responsibilities with regard to oversight and determination of executive compensation and assesses whether our compensation structure establishes appropriate incentives for officers and employees. The compensation committee reviews and makes recommendations to our board of directors with respect to our major compensation plans, policies and programs. In addition, the compensation committee reviews and approves the compensation for our executive officers, establishes and modifies the terms and conditions of employment of our executive officers and administers our equity incentive plans.
Nominating and Corporate Governance Committee
At the beginning of 2015, Messrs. Fingerhood and Komisar served on the nominating and corporate governance committee, and Mr. Komisar served as its chairman. Effective April 23, 2015, Mr. Ryder replaced Mr. Komisar on the committee and as its chairman. Our board of directors has determined that Messrs. Fingerhood and Ryder satisfy the independence requirements of the applicable Nasdaq listing standards and SEC rules and regulations for directors. Mr. Komisar resigned from the board of directors on June 9, 2015.
The nominating and corporate governance committee is responsible for making recommendations to our board of directors regarding candidates for directorships and the size and composition of our board of directors. In addition, the nominating and corporate governance committee is responsible for overseeing our corporate governance guidelines and reporting and making recommendations to our board of directors concerning corporate governance matters.


The nominating and corporate governance committee is also responsible for reviewing with our board of directors from time to time the appropriate skills and guidelines required of directors in the context of the current make-up of the board.  These guidelines and skills of the board, as a whole, may include (i) various and relevant career experience, (ii) relevant skills, such as an understanding of the Company’s business, (iii) financial expertise, (iv) diversity and (v) local and community ties.  The minimum qualifications and skills that each director should possess include (i) the highest professional and personal ethics and values, (ii) broad experience at the policy-making level in business, government, education, technology or public interest, (iii) a commitment to enhancing stockholder value and (iv) sufficient time to carry out his or her duties and to provide insight and practical wisdom based on experience.  The nominating and corporate governance committee evaluates the foregoing factors, among others, and does not assign any particular weighting or priority to any of these factors.
The nominating and corporate governance committee also considers director candidates recommended by our stockholders.  To recommend a candidate for election to our board of directors, a stockholder must notify the nominating and corporate governance committee by writing to: RPX Corporation, One Market Plaza, Steuart Tower, Suite 800, San Francisco, CA 94105, Attention: Secretary of the Company.  Such stockholder’s notice shall set forth the following information:
To the extent reasonably available, information relating to such director candidate that would be required to be disclosed in a proxy statement pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended, in which such individual is a nominee for election to our board of directors;
The director candidate’s written consent to (A) if selected, be named in the Company’s proxy statement and proxy and (B) if elected, to serve on our board of directors; and
Any other information that such stockholder believes is relevant in considering the director candidate.
The nominating and corporate governance committee considers bona fide candidates from all relevant sources, including current board members, professional search firms, stockholders and other persons.  The committee evaluates director candidates in light of the board membership criteria described above, based on all relevant information and materials available to the committee.  This includes information and materials provided by stockholders recommending director candidates, professional search firms and other parties.

reference.
Item 11.Executive Compensation.

Compensation Discussion and Analysis
ThisThe information regarding executive compensation discussion and analysis reviews and discusses our compensation programs and policies for our executive officers who are required toby this item will be namedincluded under the caption “Executive Compensation” in the 2015 Summary Compensation Table under the rules of the SEC. For 2015, these “named executive officers” are John A. Amster, Chief Executive Officer, Ned D. Segal, former Chief Financial Officer (whose employment with us terminated on January 16, 2015), Robert H. Heath, Chief Financial Officer, Martin E. Roberts, Senior Vice President, Steven S. Swank, Senior Vice President, and Mallun Yen,


Executive Vice President. This compensation discussion and analysis should be read together with the compensation tables and related disclosures set forth below.

General Overview and Objectives of our Executive Compensation Programs

We help companies reduce patent-related risk and expense by facilitating a more efficient exchange of value in the patent market. We recognize that the success of our company depends to a great degree on our ability to attract and retain talented employees who have relevant skills and experience to help us manage and expand our business. As such, the principal objectives of our executive compensation programs are the following:

to attract and retain talented and experienced executives whose knowledge, skills and performance ensure our continued success;
to provide incentive to our executives to manage our business to meet our short-term and long-term business objectives;
to ensure that our total compensation is fair, reasonable and competitive; and
to promote teamwork while also recognizing the role each executive officer plays in our success.

Each of the primary elements of our executive compensation program is discussed in more detail below. While we have identified particular compensation objectives that each element of executive compensation serves, our executive compensation programs are designed to be flexible and complementary, and to collectively serve all of the executive compensation objectives described above. Accordingly, whether or not specifically mentioned below, we believe that, as a part of our overall executive compensation policy, each individual element, to a greater or lesser extent, serves each of our objectives.

Role of Our Compensation Committee, Management and Compensation Consultant

Since our initial public offering in 2011, our compensation committee has administered our executive compensation programs and determined the compensation of our executive officers. For more information about our compensation committee, see “Corporate Governance—Board Committees—Compensation Committee.” The compensation committee has primary responsibility for reviewing and approving the compensation that may become payable to our executive officers, and provides strategic direction to management to enable management to implement the compensation committee’s decisions. The compensation committee made all the decisions regarding the 2015 compensation of our named executive officers.



Our chief executive officer, as the manager of our executive team, makes recommendations to the compensation committee about the compensation of each of our executive officers other than him. While our compensation committee considers his recommendations, it need not adopt them and may adjust them as it determines appropriate.

Compensia, Inc. (“Compensia”) serves as our compensation committee’s independent compensation consultant. Compensia provides the compensation committee with advice and resources to help develop and execute our overall compensation strategy. Compensia reports directly to the compensation committee, and the compensation committee has the sole power to terminate or replace Compensia at any time. As part of its engagement, the compensation committee has directed Compensia to work with members of management to obtain information necessary for Compensia to form recommendations and evaluate management’s recommendations. When requested by the committee, Compensia attends meetings of the compensation committee and provides information and responds to questions from committee members. As part of its engagement in 2015, Compensia reviewed compensation levels at the peer group companies described below, assessed compensation for the Company’s chief executive officer, advised on the design of the our performance-based restricted stock units, and evaluated performance-based retention strategies. Compensia does not provide any other services to the Company. In April 2015, our compensation committee analyzed whether the work of Compensia as a compensation consultant raised any conflict of interest and determined that the work of Compensia and the individual compensation advisors employed by Compensia as compensation consultants to our compensation committee has not created any conflict of interest. Our compensation committee intends to continue to assess the independence of any of our compensation advisors consistent with applicable Nasdaq listing standards.

Elements of Compensation

The compensation of our named executive officers consists of the following elements, each of which is designed to fulfill one or more of the principles and objectives described above:

base salary;
performance-based bonuses;
equity incentives;
change in control benefits;
broad-based employee benefits; and
perquisites. 

In setting compensation levels for individual named executive officers, the members of our compensation committee apply their judgment in determining the amount and mix of compensation elements for each named executive officer and the appropriate level of each element. The appropriate use and weight of each of these components has generally not been dictated by any particular formula. Rather our compensation committee may consider a range of


factors, including the executive’s anticipated responsibilities and individual experience, our compensation committee members’ experience and knowledge in compensating similarly situated individuals at other companies, the value of the executive officer’s existing equity awards, a general sense of internal pay equity among our officers, and negotiations with the executive. We view each component of executive compensation as related but distinct, and we also review total compensation of our named executive officers to ensure that our overall compensation objectives are met. The specific mix of components has been within the discretion and business judgment of our compensation committee. These components of our compensation programs together provide compensation packages that our board of directors believes have enabled us to successfully retain and motivate our named executive officers.

Compensation Determination Process

Our compensation committee generally reviews and modifies the compensation of our named executive officers annually at the end of each fiscal year in connection with a review of each officer’s performance. Our compensation committee also acts at other times based on the recommendations of our chief executive officer and as the compensation committee determines appropriate, such as in connection with a promotion or as necessary to retain an officer.

In April 2012, at the request of the compensation committee, Compensia prepared an analysis of the compensation of our chief executive officer relative to the compensation paid by a peer group of companies consisting of financial services, technology and patent licensing companies with revenue less than $350 million at the time of such review. The peer group included the following companies:

Cohen & Steers, Inc.
Cowen Group, Inc.
Financial Engines, Inc.
Greenhill & Co., Inc.
Hercules Technology Growth Capital Inc.
HFF, Inc.
MarketAxess Holdings, Inc.
Virtus Investment Partners Inc.
Aspen Technology, Inc.
Dice Holdings, Inc.
Ebix Inc.
Epiq Systems, Inc.
RealPage, Inc.
SolarWinds, Inc.


Acacia Research Corporation
CEVA, Inc.
DTS, Inc.
InterDigital, Inc.
Rambus Inc.
RealD Inc.
Tessera Technologies, Inc.

In the case of our other named executive officers, the compensation committee considers data from the Radford High-Tech Executive Compensation Survey, as the publicly available information for the peer companies does not include sufficient data with respect all of their specific positions.

We believe that this comparative data is valuable in that it provides insight into ranges and components of compensation at similarly-situated companies and helps to confirm both the competitiveness and reasonableness of our compensation decisions. Accordingly, the compensation committee used the peer group and Radford data as one of a number of factors it considered when making 2015 compensation decisions. In general, the compensation committee did not set the compensation of our named executive officers at any particular benchmark, and considerations related to our company and individual named executive officers were prioritized in making compensation decisions. In the case of our chief executive officer’s 2015 cash and equity compensation, however, the compensation committee generally targeted the 60th percentile compared to the peer company CEO data, which reflected the compensation committee’s subjective assessment of what was necessary to retain Mr. Amster.

Advisory Vote on Executive Compensation

At our 2015 annual meeting of stockholders, 88% of the shares voted were cast in favor of the advisory vote on executive compensation. The compensation committee viewed the results of this vote as broad stockholder support for our executive compensation program and did not implement any changes to our executive compensation programs as a result of the vote.

Base Salary

We provide base salary to our named executive officers and other employees to compensate them for services rendered on a day-to-day basis during the fiscal year and to provide sufficient fixed cash compensation to allow the officers to focus on their ongoing responsibilities to our company. In general, base salaries for our named executive officers are initially established through arm’s-length negotiation at the time the executive is hired or promoted, taking into account such executive’s qualifications, experience and prior salary. Adjustments to base salaries are discretionary


and are based on such factors as the scope of a named executive officer’s responsibilities, individual contribution, prior experience and sustained performance. Decisions regarding salary increases may also take into account the named executive officer’s current salary, equity ownership and the amounts paid to a named executive officer’s peers inside our company by conducting an internal analysis, which compares the pay of each named executive officer to other members of the management team and the market compensation data. Base salaries are also reviewed and adjusted when necessary to reflect changes in individual roles and responsibilities as well as our compensation committee’s subjective assessment of market conditions.

In connection with his appointment as our Chief Financial Officer in January 2015, Mr. Heath’s initial base salary as CFO was determined by arm’s-length negotiations and was set at $350,000. No changes were made to the salaries of our other named executive officers, as our compensation committee and, in the case of officers other than himself, Mr. Amster concluded that the officers’ existing salaries were adequate.

The actual base salaries paid to all of our named executive officers during fiscal year 2015 are set forth in the “2015 Summary Compensation Table.”

Performance-Based Bonuses

Cash performance bonuses are used to reward our named executive officers for the achievement of individual and company performance goals that we believe will in turn further our long-term business objectives. Cash bonuses are discretionary; however, we accrue a total bonus pool for all participants in our bonus plan based on corporate objectives. Our compensation committee determines the actual size of the bonus pool at the end of the year using the pool performance target as a guideline, but not a requirement. The compensation committee also determines individual performance bonuses for our named executive officers based on a subjective review of individual and company performance, and, in the case of officers other than our chief executive officer, based on the recommendations of our chief executive officer. In determining individual bonus amounts, our compensation committee referred to each officer’s target bonus, which is expressed as a percentage of the officer’s base salary. For 2015, our named executive officers’ target bonuses were 100% for Mr. Amster, 65% for Mr. Heath, 55% for Mr. Roberts, 60% for Mr. Swank, and 65% for Ms. Yen.

In February 2015, our compensation committee determined that we should accrue a 2015 bonus pool based on the level of our 2015 adjusted non-GAAP operating income, with a minimum and maximum amount to be accrued based on our performance. For the purpose of calculating the bonus pool, we define non-GAAP operating income to exclude stock-based compensation. We believe that adjusted non-GAAP operating income target is an appropriate measure of our company’s performance, as it is a key valuation measure considered by our stockholder and analyst community.



The compensation committee set the Company’s target adjusted non-GAAP operating income for fiscal year 2015 at $72.5 million and set the following accrual guidelines tied to the Company’s performance:

2015 Adjusted Non-GAAP Operating Income (1)
$61.6 million or less
($10.9 million below target)
$72.5 million
(100% of target)
$94.3 million or more
($21.8 million above target)
Accrual (2)28% of total company-wide salaries39% of total company-wide salaries50% of total company-wide salaries

(1)In the case of results in between the above guidelines, the full year bonus accrual would be determined by linear interpolation between the relevant specified accrual amounts.
(2)The guidelines include an additional pool equal to two percent of salary at each level of performance in order to allow the compensation committee additional flexibility to reward outstanding performance, and also include the employer portion of related payroll taxes.

Our company’s actual adjusted non-GAAP operating income for fiscal year 2015 was $76.3 million, which was above the target by $3.8 million. After a review of our company’s performance for 2015, our compensation committee set the actual bonus pool at $8.9 million, or 39% of total company-wide annual salaries for the year which represents 100% of target. Although the bonus pool calculation indicated a bonus pool of 107% of target, the compensation committee considered the Company's overall financial performance, including the beneficial effect of lower than anticipated costs of revenue on our adjusted non-GAAP operating income, in determining the bonus pool for 2015.

After determining the size of the bonus pool, our compensation committee approved 2015 bonuses for our named executive officers. In the case of our named executive officers, other than Mr. Amster, the compensation committee also considered the recommendations of Mr. Amster based on his subjective review of each named executive officer’s performance. These reviews and bonus payouts for each named executive officer were based on the following considerations:

Mr. Amster’s bonus was $525,000 (88% of his base salary) and reflected his continuing leadership of the Company and the growth in the number of clients and in the insurance business during 2015.
Mr. Heath’s bonus was $250,000 (71% of base salary) and reflected his leadership of the finance team.
Mr. Roberts’s bonus was $220,000 (61% of base salary) and reflected his role in corporate governance as well as his leadership of the legal and human resources teams.
Mr. Swank’s bonus was $175,000 (61% of base salary) and reflected the number of new and renewing clients and his continuing leadership of the client development and client relations teams.
Ms. Yen’s bonus was $220,000 (63% of base salary) and reflected her leadership of several corporate development efforts and participation in many of the Company’s growth initiatives.



The cash bonuses paid to our named executive officers are set forth in the “Bonus” column of the “2015 Summary Compensation Table.”

Long-Term Equity Incentives

We believe that strong long-term corporate performance may be achieved by using equity-based awards to encourage long-term performance by our named executive officers. Our compensation committee grants equity awards to our named executive officers and other employees to enable them to participate in the long-term appreciation of our stockholder value. We believe that equity grants align the interests of our named executive officers with our stockholders, provide them with incentives linked to long-term performance, and create an ownership culture. We believe that equity should be designed to serve as an effective recruitment and retention tool while also motivating our executive officers to work toward corporate objectives that provide a meaningful return to our stockholders.

In recent years equity-based awards to our named executive officers have generally been granted in the form of options to purchase shares of our common stock and restricted stock units (or “RSUs”). Typically, each named executive officer receives a grant of RSUs and/or a stock option upon joining our company. The initial awards of stock options generally vest over four years of service, with 25% vesting after one year of service and the remainder vesting in equal monthly installments over the next three years. The initial awards of RSUs generally vest over four years, with 25% vesting after one year of service and the remainder vesting in equal quarterly installments over the next three years.

The size and material terms of the equity awards granted to our named executive officers are determined in the subjective discretion of our compensation committee and reflect (among other factors) individual negotiations at the time an officer is hired, the cash compensation of the officer, the officer’s performance and responsibility, internal pay equity, retention concerns, and the comparative market compensation data.

As a part of the annual performance and compensation review process, based on an evaluation of each employee’s performance for the year, the compensation committee considers additional grants to employees after the first year of employment. For 2015, these grants were in the form of RSUs for all employees including our named executive officers and generally vest over four years of service. The compensation committee believes that RSUs align the interests of the named executive officers with the interests of the stockholders because the value of these awards appreciates if the trading price of our common stock appreciates, and these awards also have retention value even during periods in which our trading price does not appreciate, which supports continuity in the management team.

Consistent with this approach, our compensation committee granted the following RSUs to our named executive officers in connection with the annual review of their compensation and performance:



Mr. Amster – 155,000 RSUs
Mr. Heath – 60,000 RSUs
Mr. Roberts – 50,000 RSUs
Mr. Swank – 35,000 RSUs
Ms. Yen – 60,000 RSUs

As described above, the size of Mr. Amster’s award was set at the 60th percentile of the peer company CEO awards. In light of Mr. Amster’s leadership role and to better align his compensation with key indicators of the Company’s success, the compensation committee conditioned vesting of half of Mr. Amster’s award on achievement of performance goals over the 2015-2018 timeframe. Mr. Amster’s performance units consist of four equal tranches, one for each fiscal year in the performance period. In order for the units associated with each fiscal year to vest, the Company must achieve two out of three performance goals established for the year from among those in the Company’s board-approved operating plan. For 2015, the compensation committee selected the following goals: gross revenues, renewal rate of subscription revenue, and the number of new insurance policies written. The gross revenues and renewal rate goals were achieved, resulting in vesting of the 2015 tranche of the award on February 20, 2016. Goals for the 2016-2018 portions of the award will be established by the compensation committee at the beginning of each year, which enables the committee to select goals based on priorities for each year.

Other than the award to Mr. Amster, the size of the RSU awards were determined in the subjective discretion of our compensation committee and reflect recommendations from Mr. Amster based on his subjective review of each named executive officer’s performance. To increase Ms. Yen’s incentive to build and maintain our company’s key client relationships, our compensation committee made 10,000 of the RSUs awarded to Ms. Yen subject to performance-based vesting conditions based on her success in client development and retention.

The equity awards granted to our named executive officers in 2015 are reflected in the “2015 Grants of Plan-Based Awards” table below, except that the 2016-2018 tranches of Mr. Amster’s performance RSUs do not appear in the 2015 Grants of Plan-Based Awards table as performance goals for that portion of Mr. Amster’s award had not been established and it therefore did not have a disclosable grant date fair value.

We do not have, nor do we plan to establish, any program, plan or practice to time stock option grants in coordination with releasing material non-public information, nor do we have any established grant schedule. In addition, to date, we have not adopted stock ownership guidelines for our named executive officers.

Change in Control Benefits and Severance



The equity awards granted to Mr. Amster and Ms. Yen (other than the 10,000 performance units described above) in 2015 include a “double trigger” acceleration benefit if the officer is terminated without cause or resigns for certain reasons within 12 months after a change in control of our company. The terms of these arrangements are described below in “2015 Potential Payments Upon Termination or Change in Control.” Our compensation committee believes that it is necessary to offer senior members of our executive team the level of protection provided under these agreements to ensure that they remain focused on executing our company’s strategic plans, including in the event our company is to be acquired.

None of our named executive officers have any contractual severance benefits.

Employee Benefits

We provide the following benefits to our named executive officers, generally on the same basis as provided to all of our employees:

health, dental and vision insurance;
life insurance and accidental death and dismemberment insurance;
a 401(k) plan with an up to $5,000 match of employee contributions;
an employee assistance plan;
short- and long-term disability insurance;
medical and dependent care flexible spending account; and
a health savings account.

We believe these benefits are consistent with those of companies with which we compete for employees.

Perquisites

Given our location in downtown San Francisco, we pay the monthly parking fee incurred by certain of our officers and employees, including the $525 monthly fee for Mr. Amster. We generally do not provide any additional perquisites to our named executive officers.

Tax Considerations

Generally, Section 162(m) of the Internal Revenue Code disallows a deduction to any publicly held corporation for individual compensation exceeding $1 million in any taxable year payable to its Chief Executive Officer and certain other officers. However, compensation in excess of $1 million may be deducted if, among other things, it qualifies as


“performance-based compensation” within the meaning of Section 162(m). While our compensation committee is mindful of the benefits of deducting compensation, in order to maintain flexibility in compensating executive officers in a manner consistent with our philosophy and business goals, it has not adopted a formal policy regarding tax deductibility of compensation paid to our named executive officers2018 Proxy Statement and is aware that some of the compensation paid during 2015 is not deductible.

Section 280G of the Internal Revenue Code disallows a tax deduction with respect to excess parachute payments to certain executives and significant stockholders of companies that undergo a change in control. In addition, Section 4999 of the Internal Revenue Code imposes a 20% excise tax on the individual with respect to the excess parachute payment. Section 409A of the Internal Revenue Code also imposes significant additional taxes should an executive officer, director or other service provider receive “deferred compensation” that does not meet the requirements of Section 409A of the Internal Revenue Code. We have not provided any named executive officer with a gross-up or other reimbursement for tax amounts the executive might pay pursuant to Section 280G or Section 409A of the Internal Revenue Code. As a general matter, it is our intention to design and administer our compensation and benefits plans and arrangements for all of our employees and other service providers, including our named executive officers, so that they are either exempt from, or satisfy the requirements of, Section 409A of the Internal Revenue Code.

Financial Restatement

Our compensation committee has not adopted a policy on whether we will make retroactive adjustments to any cash or equity-based incentive compensation paid to the named executive officers (or others) where the payment was predicated upon the achievement of financial results that were subsequently the subject of a restatement. Our compensation committee believes that this issue is best addressed if and when a need actually arises, when all of the facts regarding the restatement are known. We intend to comply with all applicable laws and regulations requiring any adjustments to or recovery of incentive compensation.

Report of the Compensation Committee
The material in this report is not “soliciting material,” is not deemed “filed” with the SEC, and is not to be incorporated herein by reference into any of our filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent the Company specifically incorporates it by reference into such filing.
We, as members of the compensation committee, have reviewed and discussed the Compensation Discussion and Analysis contained in this proxy statement with management. Based on such review and discussion, we have recommended to the board of directors that the Compensation Discussion and Analysis be included in this proxy statement and incorporated by reference into our Annual Report on Form 10-K for the fiscal year ended December 31, 2015.


Submitted by the Compensation Committee of the Board of Directors
Shelby W. Bonnie
Sanford R. Robertson
Thomas O. Ryder

2015 Summary Compensation Table

The following table provides information regarding the compensation of our “principal executive officer,” both persons who served as our “principal financial officer” during the 2015 fiscal year, and our next three most highly compensated executive officers during the 2015 fiscal year. We refer to these individuals as our “named executive officers.”

Name and Principal Position Year 
Salary
($)
 
Bonus
(1)($)
 
Stock Awards
(2)($)
 
Option Awards
(3)($)
 
All Other Compensation
(4)($)
 
Total
($)
John A. Amster
Chief Executive Officer
(Principal Executive Officer)
 2015 $600,000 $525,000
 $1,484,125(5)
 $
 $
 $2,609,125
 2014  600,000  525,000
  1,120,500
  
  
  2,245,500
 2013  500,000  200,000
  2,001,250
  
  
  2,701,250
              
Ned D. Segal(6)
Chief Financial Officer
(Principal Financial Officer)
 2015 20,455       57,113(7)  77,568
 2014 450,000 300,000  848,100    5,000  1,603,100
 2013 308,523 492,500  4,346,000  738,735  2,500  5,888,258
              
Robert H. Heath(8)
Chief Financial Officer
(Principal Financial Officer)

 2015 350,000 250,000  811,800    5,000  1,416,800
              
              
              
Martin E. Roberts
Senior Vice President, General Counsel & Secretary
 2015 360,000 220,000  676,500    5,000  1,261,500
 2014 360,000 210,000  771,000    5,000  1,346,000
 2013 340,833 150,000  1,413,750    2,500  1,907,083
              
Steven S. Swank
Senior Vice President, Head of Client Development and Relations
 2015 285,000 175,000  473,550    5,000  938,550
 2014 285,000 150,000  385,500    5,000  825,500
 2013 283,542 120,000  650,650    2,500  1,056,692
              
Mallun Yen
Executive Vice President
 2015 350,000 220,000  676,500(9)    5,000  1,251,500
 2014 350,000 235,000  1,530,000    5,000  2,120,000
                     
______________



(1)The 2015 amounts in this column reflect discretionary bonuses approved by the compensation committee of our board of directors and paid in January 2016 based upon both company and individual performance.

(2)The amounts in this column represent the aggregate grant date fair value of restricted stock unit awards granted to the officer in the applicable fiscal year computed in accordance with FASB ASC Topic 718. In accordance with SEC rules, the grant date fair value of an award that is subject to a performance condition is based on the probable outcome of the performance condition. See Note 11 of the notes to our consolidated financial statements for the fiscal year ended December 31, 2015 in our annual report on Form 10-K for fiscal year 2015 filed on February 26, 2016, for a discussion of the assumptions made in determining the grant date fair value of equity awards.

(3)The amounts in this column represent the aggregate grant date fair value of option awards granted to the officer in the applicable fiscal year computed in accordance with FASB ASC Topic 718. See Note 11 of the notes to our consolidated financial statements for the fiscal year ended December 31, 2015 in our annual report on Form 10-K for fiscal year 2015 filed on February 26, 2016, for a discussion of the assumptions made in determining the grant date fair value of equity awards.

(4)Except as indicated below, consists of 401(k) matching contributions provided to all plan participants.

(5)Does not include any amount with respect to 58,125 performance-based restricted stock units granted to Mr. Amster in 2015 for which performance goals were not established as of the end of the fiscal year, as there was no reportable grant-date fair value for that portion of the award under FASB ASC Topic 718. See “Compensation Discussion and Analysis – Long-Term Equity Incentives” and footnote 4 to the 2015 Grants of Plan-Based Awards table for further information about Mr. Amster’s 2015 performance-based restricted stock unit award.

(6)Mr. Segal’s last day of employment was January 16, 2015.

(7)Consists of a payout of accrued but unused PTO in connection with Mr. Segal’s termination of employment.

(8)Mr. Heath became our Chief Financial Officer effective January 19, 2015.

(9)Does not include any amount with respect to 10,000 performance-based restricted stock units granted to Ms. Yen in 2015 as it was not probable that the goals applicable to the award would be achieved. The grant date fair value of Ms. Yen’s performance-based restricted stock units, assuming maximum achievement of applicable performance goals, is $153,600.
2015 Grants of Plan-Based Awards


The following table sets forth certain information regarding each plan-based award granted to our named executive officers during our 2015 fiscal year.
    
Estimated Future Payouts Under Equity Incentive Plan Awards
(1)
 
All Other Stock Awards: Number of Shares of Stock or Units
(1)(#)
 
Grant Date Fair Value of Stock and Option Awards
(2)($)
Name Grant Date 
Threshold
(#)
 
Target
(#)
  
John A. Amster 5/5/2015 
 19,375(3)(4)
 
 $296,825(4)
  5/5/2015 
 
 77,500
  1,187,300
            
Robert H. Heath 1/9/2015 
 
 60,000
  811,800
            
Martin E. Roberts 1/9/2015 
 
 50,000
  676,500
            
Steven S. Swank 1/9/2015 
 
 35,000
  473,550
            
Mallun Yen 1/9/2015 
 
 50,000
  676,500
  5/12/2015 5,000(5)
 10,000(5)
 
  0(6)
            
_____________
(1)The vesting schedule for each of these restricted stock unit awards is described in the footnotes to the table entitled “Outstanding Equity Awards at 2015 Fiscal Year-End” below.
(2)The amounts in this column represent the aggregate grant date fair value of option awards and restricted stock unit awards granted to the officer in the applicable fiscal year computed in accordance with FASB ASC Topic 718. See Note 11 of the notes to our consolidated financial statements for the fiscal year ended December 31, 2015 in our annual report on Form 10-K for fiscal year 2015 filed on February 26, 2016, for a discussion of the assumptions made in determining the grant date fair value of equity awards. In accordance with SEC rules, the grant date fair value of an award that is subject to a performance condition is based on the probable outcome of the performance condition.
(3)Reflects the 2015 tranche of a performance-based restricted stock unit award granted to Mr. Amster and which is described in “Compensation Discussion and Analysis – Long-Term Equity Incentives”. All of the units subject to that portion of the award are eligible to vest if two of three goals established for 2015 are achieved.
(4)No amounts are included with respect to the 2016, 2017 and 2018 tranches of Mr. Amster’s performance-based restricted stock unit award as the goals applicable to those portions of the award were not established as of the end of our 2015 fiscal year and therefore those portions of the award did not have a reportable grant date fair value. Each tranche covers 19,375 units and will vest if two of three goals established for the applicable performance period are achieved.


(5)The number in the “threshold” column reflects the minimum number of restricted stock units that could vest if a single annual goal is achieved. The number in the “target” column reflects the maximum number of units subject to the award that are eligible to vest if both annual goals are achieved.
(6)As of the date of grant, it was not probable that the goals applicable to Ms. Yen’s award would be achieved. The grant date value of Ms. Yen’s performance-based restricted stock unit award, assuming maximum achievement of applicable performance goals, is $153,600.
Outstanding Equity Awards at 2015 Fiscal Year-End
The following table sets forth information regarding each unexercised option and all unvested restricted stock and restricted stock units held by each of our named executive officers as of December 31, 2015. Each restricted stock unit represents a contingent right to receive one share of our common stock.
The vesting schedule applicable to each outstanding award is described in the footnotes to the table below. For information regarding the vesting acceleration provisions applicable to the equity awards held by our named executive officers, see “2015 Potential Payments Upon Termination or Change in Control” below.
As a result of Mr. Segal’s termination of employment on January 16, 2015, all of his options and restricted stock units that were unvested at the time of his termination were forfeited and he had until April 16, 2015 to exercise his vested options.


Option Awards Stock Awards
Name Number of Securities Underlying Unexercised Options
(#) Exercisable
 Number of Securities Underlying Unexercised Options
(#) Unexercisable
 Option Exercise Price
($)
 Option Expiration Date 
Number of Shares or Units of Stock That Have Not Vested
(#)
 
Market Value of Shares or Units of Stock That Have Not Vested
(1)($)
 
Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested
(#)
 
Equity Incentive Plan Awards; Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested
(1)($)
John A. Amster 448,076
 89,616(2)
 $9.85
 1/19/2021
 
 $
  
  
 
 
   
 39,063(3)
 429,693   
  
 
 
   
 62,969(4)
 692,659   
  
 
 
   
 19,375(5)
 213,125   
  
 
 
   
 
    93,750(6)
 1,031,250 
 
 
   
 
    150,000(7)
 1,650,000 
Robert H. Heath 120,000(8)
 
 14.19  4/5/2021
 
    
  
 39,166
 834(9)
 15.98  1/23/2022
 
    
  
 
 
   
 782(10)
 8,602   
  
 
 
   
 23,438(3)
 257,818   
  
  
 
   
 23,438(11)
 257,818   
  
  
 
   
 22,500(12)
 247,500   
  
  
 
   
 48,750(13)
 536,250   
  
Martin E. Roberts 24,479
 521(9)
 15.98  1/23/2022
 
    
  
 
 
   
 782(10)
 8,602   
  
 
 
   
 23,438(3)
 257,818   
  
 
 
   
 12,500(14)
 137,500   
  
Steven S. Swank 19,583
 417(9)
 15.98  1/23/2022
 
    
  
 
 
   
 782(10)
 8,602   
  
 
 
   
 20,313(3)
 223,443   
  
 
 
   
 14,063(12)
 154,693   
  
 
 
   
 28,438(13)
 312,818   
  
Mallun Yen 125,672(15)
 
 6.63  11/15/2020
 
    
  
 54,084
 20,834(16)
 6.63  11/15/2020
 
    
  
 
 
   
 42,188(12)
 464,068   
  
 
 
   
 40,625(13)
 446,875   50,000(7)
 550,000 
 
 
   
 
    5,000(17)
 55,000 
___________________
(1)In accordance with SEC rules, market value is based on $11.00, the closing price of our common stock on the last trading day of the year.
(2)Represents the unexercisable portion of an option granted on January 20, 2011 for 537,692 shares. None of the shares subject to the option were eligible to vest unless the option holder remained in service through


September 10, 2012, at which point 1/48th of the shares subject to the option vested upon the completion of each month of service thereafter.
(3)Represents the unvested portion of a restricted stock unit award granted on January 7, 2013 for 125,000 restricted stock units in the case of Mr. Amster, for 75,000 restricted stock units in the case of Mr. Heath, for 75,000 restricted stock units in the case of Mr. Roberts, and 65,000 restricted stock units in the case of Mr. Swank. 6.25% of the shares subject to the award vested on May 20, 2013 and 6.25% of the shares subject to the award vested quarterly thereafter as long as continuous service is provided through each vesting date.
(4)Represents the unvested portion of a restricted stock unit award granted on May 5, 2015 for 77,500 restricted stock units. 6.25% of the shares subject to the award vested on May 20, 2015 and 6.25% of the shares subject to the award vested quarterly thereafter as long as continuous service is provided through each vesting date.
(5)Represents the unvested portion of the 2015 tranche of a performance-based restricted stock unit award granted on May 5, 2015 and which is described in greater detail in “Compensation Discussion and Analysis – Long-Term Equity Incentives”. The performance goals applicable to the units were achieved, but the units remained subject to vesting based on Mr. Amster’s continuous service through February 20, 2016. The 2016, 2017 and 2018 tranches of the award, each covering 19,375 units, are not reflected in the table as the goals applicable to such tranches had not been established as of the end of our 2015 fiscal year. Each tranche will vest if two of three goals established for the applicable performance period are achieved and Mr. Amster remains in continuous service through February 20th of the following year.
(6)
Represents the unvested portion of a performance-based restricted stock unit award granted on January 7, 2013 for 125,000 restricted stock units. The units vest over approximately 4 years from the grant date, with 25% of the total number of units eligible to vest following each one-year anniversary, provided that as of each anniversary the average closing price per share of the Company’s common stock (“ACP”) for any period of 90 consecutive calendar days during the year preceding such anniversary is: (i) on the first anniversary, equal to or greater than $11.81; (ii) on the second anniversary, equal to or greater than the higher of (a) $14.17 or (b) the ACP for the period of 90 calendar days ending on the first anniversary of the grant date times 1.25; (iii) on the third anniversary, equal to or greater than the higher of (a) $16.54 or (b) the ACP for the period of 90 calendar days ending on the second anniversary of the grant date times 1.25; and (iv) on the fourth anniversary, equal to or greater than the higher of (a) $18.90 or (b) the ACP for the period of 90 calendar days ending on the third anniversary of the grant date times 1.25. To the extent a price appreciation target is not achieved, the related units remain eligible to vest following any successive anniversary of the grant date along with the portion of the units first eligible to vest on such anniversary, so long as the applicable performance-based vesting condition for the successive anniversary is satisfied and the recipient remains in continuous service through the next established vesting date. Vesting shall occur only on the established vesting dates of


February 20, May 20, August 20 and November 20. The price appreciation target for the one-year anniversary was achieved.
(7)Represents the unvested portion of a performance-based restricted stock unit award granted on February 6, 2014 for 150,000 restricted stock units in the case of Mr. Amster, and 50,000 restricted stock units in the case of Ms. Yen. The units vest over approximately 4 years from the grant date, with 25% of the total number of units eligible to vest following each one-year anniversary, provided that as of each anniversary the ACP for any period of 90 consecutive calendar days during the year preceding such anniversary is: (i) on the first anniversary, equal to or greater than $20.80; (ii) on the second anniversary, equal to or greater than the higher of (a) $24.96 or (b) the ACP for the period of 90 calendar days ending on the first anniversary of the grant date times 1.25; (iii) on the third anniversary, equal to or greater than the higher of (a) $29.12 or (b) the ACP for the period of 90 calendar days ending on the second anniversary of the grant date times 1.25; and (iv) on the fourth anniversary, equal to or greater than the higher of (a) $33.28 or (b) the ACP for the period of 90 calendar days ending on the third anniversary of the grant date times 1.25. To the extent a price appreciation target is not achieved, the related units remain eligible to vest following any successive anniversary of the grant date along with the portion of the units first eligible to vest on such anniversary, so long as the applicable performance-based vesting condition for the successive anniversary is satisfied and the recipient remains in continuous service through the next established vesting date. Vesting shall occur only on the established vesting dates of February 20, May 20, August 20 and November 20.
(8)Represents the unexercised portion of an option granted on April 6, 2011 for 120,000 shares. 25% of the shares subject to the option vested on March 28, 2012, and an additional 1/48th of the shares vested upon completion of each month of continuous service thereafter.
(9)Represents the unexercisable portion of options granted on January 24, 2012 for 40,000 shares in the case of Mr. Heath, for 25,000 shares in the case of Mr. Roberts, and for 20,000 shares in the case of Mr. Swank. 1/48th of the shares subject to the option vested upon the completion of each month of continuous service beginning on January 24, 2012.
(10)Represents the unvested portion of a restricted stock unit award granted on January 24, 2012 for 12,500 restricted stock units in the case of Messrs. Heath, Roberts and Swank. 6.25% of the shares subject to the award vested on May 20, 2012 and 6.25% of the shares subject to the award vested quarterly thereafter as long as continuous service is provided through each vesting date.
(11)Represents the unvested portion of a restricted stock unit award granted on April 25, 2013 for 75,000 restricted stock units. 6.25% of the shares subject to the award vested on May 20, 2013 and 6.25% of the shares subject to the award vested quarterly thereafter as long as recipient provides continuous service through each vesting date.


(12)Represents the unvested portion of a restricted stock unit award granted on February 6, 2014 for 40,000 restricted stock units in the case of Mr. Heath, for 25,000 restricted stock units in the case of Mr. Swank, and for 75,000 restricted stock units in the case of Ms. Yen. 6.25% of the shares subject to the award vested on May 20, 2014 and 6.25% of the shares subject to the award vested quarterly thereafter as long as recipient provides continuous service through each vesting date.
(13)Represents the unvested portion of a restricted stock unit award granted on January 9, 2015 for 60,000 restricted stock units in the case of Mr. Heath, for 35,000 restricted stock units in the case of Mr. Swank, and for 50,000 restricted stock units in the case of Ms. Yen. 6.25% of the shares subject to the award vested on May 20, 2015 and 6.25% of the shares subject to the award vested quarterly thereafter as long as recipient provides continuous service through each vesting date.
(14)Represents the unvested portion of a restricted stock unit award granted on January 9, 2015 for 50,000 restricted stock units. 25% of the shares subject to the award vested on May 20, 2015 and 25% of the shares subject to the award vested quarterly thereafter as long as recipient provides continuous service through each vesting date.
(15)Represents the unexercised portion of an option granted on November 16, 2010 for 700,000 shares. 25% of the shares subject to the option vested upon the completion of one year of continuous service beginning from November 1, 2010, and an additional 1/48th of the shares subject to the option vested upon the completion of each month of continuous service thereafter.
(16)
Represents the unexercisable portion of a performance-based option granted on November 16, 2010 for 200,000 shares. Vesting of the option began after the Board of Directors determined that option holder had achieved both of the following milestones: (1) within six months of the date option holder’s employment begins (the “Start Date”), option holder will submit to the Board of Directors for approval business plans for two new lines of business and those plans are approved by the Board of Directors (the “Business Plans”); and (2) within 18 months of the Start Date, the Company has launched at least one of the businesses in the Business Plans with at least four clients that are generating revenue consistent with the applicable plan. On May 16, 2012, the compensation committee approved the vesting of the performance-based options, and the option began vesting at a rate of 1/48th of the option shares upon completion of each month of continuous service after May 1, 2012.
(17)Represents the unvested portion of a performance-based restricted stock unit award granted on May 12, 2015 for 10,000 restricted stock units. The units vest over approximately 2 years with 50% of the total number of units eligible to vest each year on February 20, provided that as of each such date, the Committee determines that Ms. Yen has achieved at least one of the two goals set by the Board of Directors for the prior fiscal year. The 2015 goals applicable to Ms. Yen’s award were not achieved, and the related units were cancelled.


2015 Option Exercises and Stock Vested
The following table shows the number of shares acquired upon exercise of options by each named executive officer in 2015 and the number of restricted stock units held by each named executive officer that vested during the 2015 fiscal year.
  Option Awards Stock Awards
Name Number of Shares
Acquired on Exercise
(#)
 
Value Realized
on Exercise
(1)($)
 Number of Shares
Acquired on Vesting
(#)
 
Value Realized
on Vesting
(2)($)
John A. Amster 
  $
  45,781
  $661,077
Ned D. Segal 41,666
  55,818   
   
Robert H. Heath 
     64,375
  930,452 
Martin E. Roberts 10,692
  107,132   71,875
  1,035,538 
Steven S. Swank 
     32,187
  464,404 
Mallun Yen 404,095
  3,500,018   28,125
  406,171 
___________________
(1)Value realized is based on the difference between the fair market value of our common stock on the date of exercise and the exercise price.
(2)Value realized is based on the fair market value of our common stock on the vesting date.
Pension Benefits and Non-qualified Deferred Compensation
Our company does not provide a pension plan for employees, and no named executive officers participated in a non-qualified deferred compensation plan during the 2015 fiscal year.
2015 Potential Payments Upon Termination or Change in Control
We have entered into offer letters and either stock option, restricted stock unit or stock purchase agreements with each of our named executive officers. None of the offer letters entered into with our named executive officers provide for the payment of severance; however, we have entered into agreements with Mr. Amster and Ms. Yen under which they may be entitled to accelerated vesting of equity awards upon certain terminations of employment, as described in further detail below. Additionally, options and restricted stock units granted pursuant to either our 2008 Stock Plan or our 2011 Equity Incentive Plan, including any options or restricted stock units granted to our named executive officers, may accelerate and vest in full if our company is subject to certain corporate transactions in which the surviving corporation does not assume the options or restricted stock units or substitute new awards for outstanding awards.

Agreements with John A. Amster


In January 2011, we granted Mr. Amster 537,692 options. Pursuant to the stock option applicable to this award, if Mr. Amster is subject to an involuntary termination within 12 months following a change in control, then he will be entitled to vesting acceleration of 50% of any then-unvested shares or units subject to the awards.
For purposes of the January 2011 stock option agreement with Mr. Amster:
“Involuntary termination” is defined as the termination of Mr. Amster’s service by reason of (i) the involuntary discharge of Mr. Amster by our company for reasons other than cause or death or disability or (ii) his voluntary resignation following (a) the material reduction in authority and responsibility with our company (it being understood that a material reduction in authority and responsibility shall not be deemed to have occurred as long as he retains substantial senior executive responsibilities in the same line of business that he was involved with immediately prior to a change in control), (b) a reduction in his base salary by more than 10% or (c) a request by our company that he relocate by more than 50 miles.
“Change in control” is defined as (i) the consummation of a merger or consolidation of our company with or into another entity or (ii) the dissolution, liquidation or winding up of our company. The foregoing notwithstanding, a merger or consolidation of our company shall not constitute a “change in control” if immediately after such merger or consolidation a majority of the voting power of the capital stock of the continuing or surviving entity, or any direct or indirect parent corporation of such continuing or surviving entity, will be owned by the persons who were our stockholders immediately prior to such merger or consolidation in substantially the same proportions as their ownership of the voting power of our capital stock immediately prior to such merger or consolidation.
“Cause” is defined as (i) an intentional and unauthorized use or disclosure by Mr. Amster of our confidential information or trade secrets, which use or disclosure causes material harm to our company, (ii) a material breach by Mr. Amster of any agreement between him and our company, (iii) a material failure by Mr. Amster to comply with our written policies or rules, (iv) Mr. Amster’s conviction of, or plea of “guilty” or “no contest” to, a felony under the laws of the United States or any State thereof, (v) Mr. Amster’s gross negligence or willful misconduct, (vi) a continuing failure by Mr. Amster to perform assigned duties after receiving written notification of such failure from our board of directors or (vii) a failure by Mr. Amster to cooperate in good faith with a governmental or internal investigation of our company or its directors, officers or employees, if our company has requested his cooperation.
“Disability” is defined as Mr. Amster’s inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment.
In January 2013, we granted Mr. Amster 125,000 restricted stock units, and in May 2015, we granted Mr. Amster 77,500 restricted stock units. Pursuant to the restricted stock unit award agreements applicable to these awards, if Mr. Amster is subject to an involuntary termination within 12 months following a change in control, then he will be entitled to vesting acceleration of 50% of any then-unvested shares or units subject to the award.


In January 2013, we also granted Mr. Amster 125,000 performance-based restricted stock units, in February 2014, we granted Mr. Amster 150,000 performance-based restricted stock units, and in May 2015 we granted Mr. Amster 77,500 performance-based restricted stock units. Pursuant to the performance-based restricted stock unit award agreements applicable to these awards, if our company is subject to a change in control before Mr. Amster’s service terminates and prior to the time the units have vested or expired, then the performance conditions for the applicable award will be waived and 6.25% of the units subject to the award will vest quarterly on the Company’s established vesting dates until the fourth anniversary of the grant date for the units granted in January 2013 and in February 2014, and until fully vested for the units granted in May 2015, provided Mr. Amster remains in continuous service through each vesting date. For the units granted in January 2013 and in February 2014, any units are not vested by the fourth anniversary of the grant date shall be forfeited. However, if Mr. Amster is subject to an involuntary termination within 12 months after the change in control and, in the case of the units granted in January 2013 and in February 2014, prior to the fourth anniversary of the award date, then 50% of the units that are unvested at the time of the involuntary termination will vest.
For purposes of the restricted stock unit and performance-based restricted stock unit award agreements with Mr. Amster:
Change in Control” is defined as:
(a)The consummation of a merger or consolidation of the Company with or into another entity or any other corporate reorganization, if persons who were not stockholders of the Company immediately prior to such merger, consolidation or other reorganization own immediately after such merger, consolidation or other reorganization more than 50% of the voting power of the outstanding securities of each of (i) the continuing or surviving entity and (ii) any direct or indirect parent corporation of such continuing or surviving entity;
(b)The sale, transfer or other disposition of all or substantially all of the Company’s assets;
(c)A change in the composition of the Board, as a result of which fewer than 50% of the incumbent directors are directors who either:
(i)Had been directors of the Company on the date 24 months prior to the date of such change in the composition of the Board (the “Original Directors”); or
(ii)Were appointed to the Board, or nominated for election to the Board, with the affirmative votes of at least a majority of the aggregate of (A) the Original Directors who were in office at the time of their appointment or nomination and (B) the directors whose appointment or nomination was previously approved in a manner consistent with this Paragraph (ii); or
(d)Any transaction as a result of which any person becomes the “beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing


more than 50% of the total voting power represented by the Company’s then outstanding voting securities. For purposes of this Subsection (d), the term “person” shall have the same meaning as when used in Sections 13(d) and 14(d) of the Exchange Act but shall exclude (i) a trustee or other fiduciary holding securities under an employee benefit plan of the Company or of a Parent or Subsidiary and (ii) a corporation owned directly or indirectly by the stockholders of the Company in substantially the same proportions as their ownership of the common stock of the Company.
A transaction shall not constitute a Change in Control if its sole purpose is to change the state of the Company’s incorporation or to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such transaction. In addition, if a Change in Control constitutes a payment event with respect to any Award which provides for a deferral of compensation and is subject to Code Section 409A, then notwithstanding anything to the contrary in the Plan the transaction with respect to such Award must also constitute a “change in control event” as defined in Treasury Regulation Section 1.409A-3(i)(5) to the extent required by Code Section 409A.
Involuntary Termination” is defined as either (i) a separation as a result of the termination of Mr. Amster’s employment by the Company for reasons other than cause or death or disability; or (ii) Mr. Amster’s resignation for good reason.
Resignation for Good Reason” is defined as a separation as a result of Mr. Amster’s resignation within 12 months after one of the following conditions has come into existence without Mr. Amster’s consent: (i) a material reduction in Mr. Amster’s authority and responsibility (it being understood that a material reduction in authority and responsibility shall not be deemed to have occurred as long as Mr. Amster retains substantial senior executive responsibilities in the same line of business that Mr. Amster was involved with immediately prior to a Change in Control); (ii) a reduction in Mr. Amster’s base salary by more than 10%; or (iii) a request by the Company that Mr. Amster relocate by more than 50 miles. A resignation for good reason will not be deemed to have occurred unless Mr. Amster gives the Company written notice of the condition within 90 days after the condition comes into existence and the Company fails to remedy the condition within 30 days after receiving Mr. Amster’s written notice.
Cause” is defined as (i) Mr. Amster’s intentional and unauthorized use or disclosure of the Company’s confidential information or trade secrets, which use or disclosure causes material harm to the Company; (ii) Mr. Amster’s material breach of any agreement between Mr. Amster and the Company; (iii) Mr. Amster’s material failure to comply with the Company’s written policies or rules; (iv) Mr. Amster’s conviction of, or plea of “guilty” or “no contest” to, a felony under the laws of the United States or any State thereof; (v) Mr. Amster’s gross negligence or willful misconduct; (vi) Mr. Amster’s continuing failure to perform assigned duties after receiving written notification of such failure from the Board of Directors; or (vii) Mr. Amster’s failure to cooperate in good faith with a governmental or internal investigation of the Company or its directors, officers or employees, if the Company has requested Mr. Amster’s cooperation.


Disability” shall mean Mr. Amster’s inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment.
Agreements with Mallun Yen
In November 2010, we granted Ms. Yen 200,000 performance-based options. Pursuant to the performance-based stock option agreement applicable to this award, if the milestones applicable to the option have been achieved and Ms. Yen is subject to an involuntary termination within 12 months following a change in control, then she will be entitled to vesting acceleration of 50% of any then-unvested shares subject to the awards. The definitions applicable to this award are the same as described above with respect to Mr. Amster’s stock option grant.
In February 2014, we granted Ms. Yen 75,000 restricted stock units, and in January 2015, we granted Ms. Yen 50,000 restricted stock units. The treatment of these awards upon a change in control, including the definitions for the purposes of the restricted stock unit agreement, is the same as described above with respect to Mr. Amster’s restricted stock unit awards.
In February 2014, we also granted Ms. Yen 50,000 performance-based restricted stock units. The treatment of this award upon a change in control, including the definitions for the purposes of the performance-based restricted stock unit award agreement, is the same as described above with respect to Mr. Amster’s 2013 and 2014 performance-based restricted stock unit awards.
The following table describes the potential benefits to which Messrs. Amster and Ms. Yen would have been entitled under the arrangements described above, assuming that each such officer’s employment terminated as of December 31, 2015. Messrs. Heath, Roberts and Swank were not entitled to any benefits upon a termination of employment on December 31, 2015, and Mr. Segal did not receive any benefits in connection with his termination of employment on January 16, 2015.
Name Benefit Involuntary Termination Following a Change in Control
John A. Amster Option Acceleration(1) $51,529
  Restricted Stock Unit Acceleration(2) 1,812,426
  Total Value $1,863,955
     
Mallun Yen Option Acceleration(1) $45,522
  Restricted Stock Unit Acceleration(2) 730,472
  Total Value $775,994
      


___________________
(1)The value of option acceleration shown in the table above assumes that the termination of the named executive officer’s employment occurred on December 31, 2015, and was calculated by multiplying the number of unvested option shares accelerated by the difference between $11.00, the closing price of our common stock on the last trading day of the year, and the exercise price of the option.
(2)The value of restricted stock acceleration shown in the table above assumes that the termination of the named executive officer’s employment occurred on December 31, 2015, and was calculated by multiplying the number of unvested shares accelerated by $11.00, the closing price of our common stock on the last trading day of the year. No value is assigned to the waiver of the performance conditions applicable to performance-based restricted stock units in connection with a change in control.

Director Compensation

Pursuant to our compensation program for non-employee directors, we do not compensate our non-employee directors for their service in cash, instead providing compensation in the form of initial and annual equity awards as described below. These equity awards currently consist of restricted stock units, with each unit representing the right to receive one share of our common stock. We also reimburse our non-employee directors for their reasonable out-of-pocket expenses incurred in attending board and committee meetings.

Each new non-employee director is granted an initial restricted stock unit with a target value of $175,000 upon such director’s election to our board of directors, which vests in equal annual installments over 3 years of service. In addition, non-employee directors (including a non-employee director who previously was our employee) who continue to serve on our board of directors receive annual restricted stock unit awards in connection with each annual meeting of stockholders, with a target value based on board and committee service as set forth in the table below. Each annual restricted stock unit award will vest in full on the earlier of the one-year anniversary of the date of grant or on the date of the following year’s annual meeting of stockholders, provided the director remains in continuous service through the applicable vesting date. The annual restricted stock unit award to a non-employee director who joined the board within 12 months prior to an annual meeting will be pro-rated, with the target value determined based on the number of whole months of board service provided during the prior 12-month period.
Board service$150,000 
plus (as applicable):  
Audit Committee chair$22,500 
Other Audit Committee members$10,000 
Compensation Committee chair$12,500 
Other Compensation Committee members$6,000 
Nominating & Corporate Governance chair$9,000 
Other Nominating & Corporate Governance members$5,000 
Lead Independent Director$20,000 



Both the initial and annual restricted stock unit awards are granted under our 2011 Equity Incentive Plan and are subject to full vesting acceleration in the event we undergo a change in control while the director is serving on our board of directors.

As employees, Messrs. Amster and Barker do not receive any additional compensation for their service on the board of directors.

2015 Director Compensation Table

The following table sets forth all of the compensation awarded to, earned by, or paid to each person who served as a director during 2015, other than a director who is also a named executive officer.
Name 
Fees earned or paid in cash
($)
 
Stock
Awards
(1)(2)($)
 Total
($)
Geoffrey T. Barker(3) $50,000
  $
 $50,000
 
Shelby W. Bonnie     208,786
   208,786
 
Frank E. Dangeard    186,164   186,164  
Steven L. Fingerhood    205,921   205,921  
Randy Komisar(4)         
Sanford R. Robertson    181,505   181,505  
Thomas O. Ryder    196,699   196,699  




(1)The amounts in this column represent the aggregate grant date fair value of restricted stock unit awards granted to the director in the applicable fiscal year computed in accordance with FASB ASC Topic 718. See Note 11 of the notes to our consolidated financial statements for the fiscal year ended December 31, 2015 in our annual report on Form 10-K for fiscal year 2015 filed on February 26, 2016, for a discussion of the assumptions made by our company in determining the grant date fair value of its equity awards.

(2)Pursuant to our compensation program for our non-employee directors, in connection with our 2015 annual meeting of stockholders, each director received an award of restricted stock units in the following amounts: Mr. Bonnie (13,041), Mr. Dangeard (11,628), Mr. Fingerhood (12,862), Mr. Komisar (0), Mr. Robertson (11,337) and Mr. Ryder (12,286). Each restricted stock unit represents a contingent right to receive one share of our common stock. As of December 31, 2015, the above listed directors held outstanding restricted stock units in the following amounts: Mr. Barker (0), Mr. Bonnie (13,041), Mr. Dangeard (18,805), Mr. Fingerhood (12,862), Mr. Komisar (0), Mr. Robertson (11,337) and Mr. Ryder (12,286). As of December 31, 2015, the above-listed directors also held outstanding options to purchase the following number of shares of our common


stock: Mr. Barker (358,462), Mr. Bonnie (67,500), Mr. Dangeard (0), Mr. Fingerhood (60,625), Mr. Komisar (0), Mr. Robertson (67,500) and Mr. Ryder (7,500).

(3)Reflects amounts earned as salary as our employee. As an employee, Mr. Barker does not receive any additional compensation for his service on the board of directors.

(4)Mr. Komisar resigned from our board of directors effective June 9, 2015.
Compensation Committee Interlocks and Insider Participation
In 2015, Messrs. Bonnie, Robertson and Ryder served as members of the compensation committee. None of the members of our compensation committee is or has in the past served as an officer or employee of our company. None of our executive officers currently serves, or in the past year has served, as a member of the board of directors or compensation committee of any entity that has one or more executive officers serving on our board of directors or compensation committee.reference.
Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The following table provides information concerning beneficial ownership of our common stock as of April 20, 2016, by:
each stockholder, or group of affiliated stockholders, known to us to beneficially own more than 5% of our outstanding common stock;
each of our named executive officers;
each of our current directors; and
all of our executive officers and directors as a group.

The table below is based upon information supplied by directors, executive officers and principal stockholders and Schedule 13Gs or Schedule 13Ds filed with the SEC through April 20, 2016.

The percentage ownership is based upon 51,404,864 shares of common stock outstanding as of April 20, 2016.

For purposes of the table below, we deem shares of common stock subject to options or warrants that are currently exercisable or exercisable within 60 days of April 20, 2016 and restricted stock units that vest within 60 days of April 20, 2016 to be outstanding and to be beneficially owned by the person holding the options, warrants or restricted stock units for the purpose of computing the percentage ownership of that person, but we do not treat them as outstanding


for the purpose of computing the percentage ownership of any other person. Except as otherwise noted, the persons or entities in this table have sole voting and investing power with respect to all of the shares of common stock beneficially owned by them, subject to community property laws, where applicable. Unless otherwise indicated, the address for each beneficial owner is c/o RPX Corporation, One Market Plaza, Steuart Tower, Suite 800, San Francisco, California 94105.




Name of beneficial owner Number of shares beneficially owned Percentage of shares beneficially owned
5% Stockholders (other than our executive officers and directors)      
BlackRock, Inc.(1) 5,056,473  9.84 %
Dimensional Fund Advisors LP(2) 2,827,481  5.50 %
Fiduciary Management, Inc.(3) 4,428,386  8.61 %
Entities affiliated with Mangrove Partners(4) 2,580,986  5.02 %
The Vanguard Group(5) 3,489,006  6.79 %
Directors and Named Executive Officers      
John A. Amster(6) 1,842,524  3.55 %
Geoffrey T. Barker(7) 379,492  *  
Robert H. Heath(8) 227,345  *  
Martin E. Roberts(9) 123,097 **  
Steven S. Swank(10) 30,311  *  
Mallun Yen(11) 311,787  *  
Shelby W. Bonnie(12) 175,630  *  
Frank E. Dangeard(13) 18,694  *  
Steven L. Fingerhood(14) 112,597  *  
Sanford R. Robertson(15) 279,285  *  
Thomas O. Ryder(16) 45,270  *  
All directors and executive officers as a group (12 persons) (17)
 3,546,032  6.85 %
*Represents beneficial ownership of less than one percent of our outstanding common stock.

(1)Based upon a Schedule 13G/A filed with the SEC on January 27, 2016, BlackRock, Inc. is a parent holding company/control person who has sole voting power over 4,806,648 shares and sole dispositive power over 5,056,473 shares. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares; no one person’s interest in the shares is more than five percent of the total outstanding common shares. The subsidiaries holding the shares are BlackRock Advisors, LLC, BlackRock Asset Management Canada Limited, BlackRock Asset Management Ireland Limited, BlackRock Asset Management Schweiz AG, BlackRock Fund Advisors, BlackRock Institutional Trust Company, N.A., BlackRock International Limited, BlackRock Investment Management, LLC, and BlackRock Japan Co Ltd. The address of BlackRock, Inc. is 55 East 52nd Street, New York, New York 10055.


(2)Based upon a Schedule 13G filed with the SEC on February 9, 2016, Dimensional Fund Advisors LP is an investment adviser who has sole voting power over 2,681,648 shares and sole dispositive power over 2,827,481 shares. Dimensional Fund Advisors LP, an investment adviser registered under Section 203 of the Investment Advisors Act of 1940, furnishes investment advice to four investment companies registered under the Investment Company Act of 1940, and serves as investment manager or subadviser to certain other commingled funds, group trusts and separate accounts (such investment companies, trusts and accounts, collectively referred to as the “Funds”). In certain cases, subsidiaries of Dimensional Fund Advisors LP may act as an adviser or subadviser to certain Funds. In its role as investment advisor, subadviser and/or manager, Dimensional Fund Advisors LP or its subsidiaries (collectively, “Dimensional”) may possess voting and/or investment power over the securities of the Issuer that are owned by the Funds, and may be deemed to be the beneficial owner of the shares of the Issuer held by the Funds. However, all securities reported in the Schedule 13G are owned by the Funds. Dimensional Fund Advisors LP disclaims beneficial ownership of all such securities. The Funds have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the securities held in their respective accounts. To the knowledge of Dimensional Fund Advisors, LP, the interest of any one such Fund does not exceed 5% of the class of securities. The address of Dimensional Fund Advisors LP is Building One, 6300 Bee Cave Road, Austin, Texas 78746.
(3)Based upon a Schedule 13G filed with the SEC on February 16, 2016, Fiduciary Management, Inc. is an investment adviser who has sole voting power over 3,753,041 shares and sole dispositive power over 4,428,386 shares. The shares are owned directly by various accounts managed by Fiduciary Management, Inc. Such accounts have the right to receive dividends from, and the proceeds from the sale of, the shares. The address of Fiduciary Management, Inc. is 100 East Wisconsin Avenue, Suite 2200, Milwaukee, Wisconsin 53202.
(4)Based upon a Schedule 13D filed with the SEC on March 14, 2016, The Mangrove Partners Master Fund, Ltd., a Cayman Islands exempted company (the “Master Fund”), The Mangrove Partners Fund, L.P., a Delaware limited partnership (the “US Feeder”), The Mangrove Partners Fund (Cayman), Ltd., a Cayman Islands exempted company (the “Cayman Feeder”), Mangrove Partners, a Cayman Islands exempted company (“Mangrove Partners”), Mangrove Capital, a Cayman Islands exempted company (“Mangrove Capital”), and Nathaniel August have the shared voting and the shared dispositive powers over 2,580,986 shares. As the two controlling shareholders of the Master Fund, each of the US Feeder and the Cayman Feeder may be deemed to beneficially own the shares owned by the Master Fund. Mangrove Partners is the investment manager of each of the Master Fund, the US Feeder and the Cayman Feeder. Mangrove Capital is the general partner of the US Feeder. Mr. August is the director of each of Mangrove Partners and Mangrove Capital. By virtue of these relationships, each of Mangrove Partners, Mangrove Capital and Mr. August may be deemed to beneficially own the shares owned by the Master Fund. The principal business address of the US Feeder, Mangrove Partners, Mangrove Capital and Nathaniel August is 645 Madison Avenue, 14th Floor, New York, New York 10022. The principal business address of each of the Master Fund and the Cayman Feeder is c/o


Maples Corporate Services, Ltd., PO Box 309, Ugland House, South Church Street, George Town, Grand Cayman, Cayman Islands KY1-1104.
(5)Based upon a Schedule 13G/A filed with the SEC on February 10, 2016, The Vanguard Group is an investment advisor who has sole voting power over 73,028 shares, shared voting power over 6,300 shares, sole dispositive power over 3,412,278 shares, and shared dispositive power over 76,728 shares. Vanguard Fiduciary Trust Company, a wholly-owned subsidiary of The Vanguard Group, Inc., is the beneficial owner of 70,428 shares as a result of its serving as investment manager of collective trust accounts. Vanguard Investments Australia, Ltd., a wholly-owned subsidiary of The Vanguard Group, Inc., is the beneficial owner of 8,900 shares as a result of its serving as investment manager of Australian investment offerings. The address of The Vanguard Group is 100 Vanguard Boulevard, Malvern, Pennsylvania 19355.
(6)Includes 1,015,372 shares held by John Amster and Colleen Amster, Trustees of the John and Colleen Amster Living Trust dated March 2, 2000, 299,209 shares held by JCA, LLC, options to purchase 515,288 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Amster, and 12,655 shares of common stock that may vest within 60 days of April 20. 2016 from a restricted stock unit award granted to Mr. Amster. Voting and investment power over the shares beneficially owned by the John and Colleen Amster Living Trust dated March 2, 2000 is held by Mr. Amster and Colleen Quinn Amster, Mr. Amster’s wife. Voting and investment power over the shares beneficially owned by JCA, LLC is held by Mr. and Ms. Amster. Excludes options to purchase 22,404 shares of common stock that may not be exercised within 60 days of April 20, 2016, and 76,720 shares of common stock from a restricted stock unit award and 301,875 shares of common stock from performance-based restricted stock unit awards that will not vest within 60 days of April 20, 2016. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(7)Includes 3,284 shares held by Barker 2010 Children’s Trust FBO Alexander Payne Barker, 3,283 shares held by Barker 2010 Children’s Trust FBO Katherine Eryl Barker, and options to purchase 343,526 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Barker. Excludes options to purchase 14,936 shares of common stock that may not be exercised within 60 days of April 20, 2016.
(8)Includes options to purchase 160,000 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Heath, and 19,374 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Mr. Heath. Excludes 143,126 shares of common stock that will not vest within 60 days of April 20, 2016 from restricted stock unit awards. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(9)Includes options to purchase 25,000 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Roberts, and 19,687 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Mr. Roberts. Excludes 59,063 shares of common stock that will not vest within 60 days of April 20, 2016 from restricted stock unit awards. Each restricted stock unit represents a contingent right to receive one share of our common stock.


(10)Includes options to purchase 20,000 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Swank, and 10,311 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Mr. Swank. Excludes 84,689 shares of common stock that will not vest within 60 days of April 20, 2016 from restricted stock unit awards. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(11)Includes options to purchase 200,590 shares of common stock that may be exercised within 60 days from April 20, 2016 by Ms. Yen, and 9,374 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Ms. Yen. Excludes 90,626 shares of common stock from restricted stock unit awards and 55,000 shares of common stock from a performance-based restricted stock unit award that will not vest within 60 days of April 20, 2016. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(12)Includes 35,236 shares of common stock held by MHV Partners LLC. Voting and investment power over the shares beneficially owned by MHV Partners LLC is held by Mr. Bonnie. Includes 1,700 shares held by Merlin Investments LLC. Mr. Bonnie disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. Includes 500 shares held by Mason Bonnie Descendants Trust I, 200 shares held by Mason Bonnie Descendants Trust II, 500 shares held by Virginia Ayer Bonnie Descendants Trust I, 200 shares held by Virginia Ayer Bonnie Descendants Trust II, 500 shares held by Henry Bonnie Descendants Trust I, 200 shares held by Henry Bonnie Descendants Trust II, 200 shares held by GST Exempt Descendants Trust II FBO Mason Bonnie, 200 shares held by GST Exempt Descendants Trust II FBO Virginia Bonnie, and 200 shares held by GST Exempt Descendants Trust II FBO Henry Bonnie. Includes 1,700 shares held by Cornelia Bonnie Revocable Trust, of which Mr. Bonnie is a beneficiary, 1,700 shares held by Edward Bonnie Revocable Trust, of which Mr. Bonnie is a beneficiary, 5,500 shares held by Shelby Bonnie Trust DTD 12/20/1968, of which Mr. Bonnie is a beneficiary, 4,600 shares held by Shelby Bonnie Trust DTD 3/27/1959, of which Mr. Bonnie is a beneficiary, 6,100 shares held by Shelby Bonnie Trust DTD 10/20/1964, of which Mr. Bonnie is a beneficiary, 11,300 shares held by Cornelia Bonnie Trust DTD 11/10/1970, of which Mr. Bonnie is a beneficiary, and 2,400 shares held by Edward Bonnie Trust DTD 8/15/1966, of which Mr. Bonnie is a co-trustee and beneficiary. Includes options to purchase 67,500 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Bonnie, and 13,041 shares of common stock that may vest within 60 days of April 20, 2016 from a restricted stock unit award granted to Mr. Bonnie. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(13)Includes 15,216 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Mr. Dangeard. Excludes 3,589 shares of common stock that will not vest within 60 days of April 20, 2016 from restricted stock unit awards granted to Mr. Dangeard. Each restricted stock unit represents a contingent right to receive one share of our common stock.


(14)Includes options to purchase 60,625 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Fingerhood, and 12,862 shares of common stock that may vest within 60 days of April 20, 2016 from a restricted stock unit award granted to Mr. Fingerhood. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(15)Includes options to purchase 67,500 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Robertson, and 11,337 shares of common stock that may vest within 60 days of April 20, 2016 from a restricted stock unit award granted to Mr. Robertson. Each restricted stock unit represents a contingent right to receive one share of our common stock.
(16)Includes options to purchase 7,500 shares of common stock that may be exercised within 60 days of April 20, 2016 by Mr. Ryder, and 12,286 shares of common stock that may vest within 60 days of April 20, 2016 from a restricted stock unit award granted to Mr. Ryder.  Each restricted stock unit represents a contingent right to receive one share of our common stock.
(17)Includes options to purchase 1,467,529 shares of common stock that may be exercised within 60 days of April 20, 2016, and 136,143 shares of common stock that may vest within 60 days of April 20, 2016 from restricted stock unit awards or performance-based restricted stock unit awards beneficially owned by our directors and named executive officers as reflected in footnotes 6 through 16. Excludes options to purchase 37,340 shares of common stock that may not be exercised within 60 days of April 20, 2016, and 1,264,688 shares of common stock that may not vest within 60 days of April 20, 2016 from restricted stock unit awards or performance-based restricted stock unit awards beneficially owned by our named executive officers and our executive officers who are not named executive officers. Each restricted stock unit represents a contingent right to receive one share of our common stock.

Equity Compensation Plan Information
The following table provides certain information regarding oursecurities authorized for issuance under equity compensation plans required by this item will be included under the caption “Equity Compensation Plan Information” in effect asthe 2018 Proxy Statement and is incorporated herein by reference. The information regarding security ownership of December 31, 2015:
Plan Category 
Number of Securities to be Issued Upon Exercise of Outstanding Options, Warrants and Rights
(a)
 
Weighted-Average Exercise Price of Outstanding Options, Warrants and Rights
(b)
 
Number of Securities Remaining Available for Issuance Under Equity Compensation Plans (Excluding Securities Reflected in Column (a))
(c)
Equity compensation plans approved by security holders 4,895,360(1) $11.11(2) 3,093,605
Equity compensation plans not approved by security holders n/a n/a n/a
Total 4,895,360(1) $11.11(2) 3,093,605


___________________
(1)Includes 2,340,030 shares issuable upon exercise of outstanding options and 2,555,330 shares issuable upon vesting of outstanding restricted stock units.     
(2)Does not take into account outstanding restricted stock units as these awards have no exercise price.

certain beneficial owners and management required by this item will be included under the caption “Security Ownership of Certain Beneficial Owners and Management” in the 2018 Proxy Statement and is incorporated herein by reference.
Item 13.Certain Relationships and Related Transactions, and Director Independence.

Policies and Procedures for Related Person Transactions

In approving or disapproving any proposedThe information regarding transactions with related person transactions, arrangements or relationships, the audit committee will consider all material information, including the identity of the related person and his/her relationship to our company; designation of the proposed transaction as a single, one-time transaction, a proposed series of transactions or an ongoing business relationship; the proposed aggregate value of such transaction or transactions if known, or a good faith estimate; any alternatives considered, including any evidence supporting the arm’s length valuation of the transaction; and the disclosure implications of the proposed transactions. To identify related-person transactions in advance, we rely on information supplied by our executive officers and directors. We did not enter any related-person transactions during 2015.

Independent Directors

We believe our corporate governance initiatives comply with the rules and regulations of the SEC and with the rules of The Nasdaq Stock Market, or Nasdaq. Our board of directors evaluates our corporate governance principles and policies on an ongoing basis.
Each of our directors other than John A. Amster and Geoffrey T. Barker qualifies as an independent director in accordance with the published listing requirements of Nasdaq. The Nasdaq independence definition includes a series of objective tests, such as that the director is not also one of our employees and has not engaged in certain types of business dealings with RPX. In addition, as furtherpersons required by this item is included under the Nasdaq rules, our board of directors has made a subjective determination as to each independent director that no relationships exist which,caption “Certain Relationships and Related Persons Transactions” in the opinion of our board of directors, would interfere with2018 Proxy Statement and will be incorporated herein by reference. The information regarding director independence required by this item is included under the exercise of independent judgmentcaption “Corporate Governance” in carrying out the responsibilities of a director. In making these determinations, our board of directors reviewed2018 Proxy Statement and discussed information providedis incorporated herein by the directors and by RPX with regard to each director’s business and personal activities as they may relate to us and our management.reference.



Item 14.Principal Accounting Fees and Services.
IndependentThe information required by this item will be incorporated under the captions “Independent Registered Public Accounting Firm’s FeesFees” and “Pre-Approval Policies and Procedures” in the 2018 Proxy Statement and is incorporated herein by reference.
The following table represents aggregate fees billed to RPX for the years ended December 31, 2015, and December 31, 2014, by PricewaterhouseCoopers LLP.
 Year Ended December 31,
 2015  2014 
Audit fees(1)$1,570,519
  $1,377,727
 
Tax fees(2)136,185   174,874  
All other fees(3)1,800   1,800  
Total fees$1,708,504
  $1,554,401
 
PART IV.
___________________
(1)Item 15.The fees billed or incurred by PricewaterhouseCoopers LLP for professional services rendered in connection with the annual audit of our consolidated financial statements for the year ended December 31, 2015Exhibits and 2014 include the review of quarterly financial statements included in our quarterly reports on Form 10-Q and the review and consent issued for our registration statement on Form S-8.Consolidated Financial Statement Schedules.
(2)1.Tax fees consist of fees billed for tax compliance, consultation and planning services.Consolidated Financial Statements
The financial statements as set forth under Item 8 of this Annual Report on Form 10-K are incorporated herein by reference.
(3)2.For the year ended December 31, 2015 and 2014, other fees consisted of on-line subscription fees and other miscellaneous services. No other consulting services were provided.Consolidated Financial Statement Schedules

All fees described above were pre-approved byschedules have been omitted because the audit committeeinformation required to be set forth therein is not material, not applicable, or is shown in accordance with the requirements of Regulation S-X under the Exchange Act.financial statements or notes thereto.

Pre-Approval Policies and Procedures
3.Exhibits
The audit committee’s policy is to pre-approve all audit and permissible non-audit services renderedexhibits listed in the accompanying Exhibit Index are filed or incorporated herein by PricewaterhouseCoopers LLP, our independent registered public accounting firm. The audit committee can pre-approve specified services in defined categories of audit services, audit-related services and tax services up to specified amounts,reference as part of the audit committee’s approval of the scope of the engagement of PricewaterhouseCoopers LLP orthis Annual Report on an individual case-by-case basis before PricewaterhouseCoopers LLP is engaged to provide a service. The audit committee has determined that the rendering of tax-related services by PricewaterhouseCoopers LLP is compatible with maintaining the principal accountant’s independence for audit purposes. PricewaterhouseCoopers LLP has not been engaged to perform any non-audit services other than tax-related services.



Form 10-K.

Item 16.Form 10-K Summary.
None.

EXHIBIT INDEX
    Incorporated by Reference  
Exhibit
Number
 Exhibit Title Form File No. Exhibit
No.
 Filing
Date
 Provided
Herewith
             
 Amended and Restated Certificate of Incorporation of RPX Corporation S-1 333-171817 3.2 1/21/2011  
             
 Amended and Restated Bylaws of RPX Corporation 8-K 001-35146 3.1 12/11/2015  
             
 Reference is made to Exhibits 3.1 and 3.2          
             
 Form of Common Stock Certificate evidencing shares of common stock of the Registrant S-1/A 333-171817 4.2 4/29/2011  
             
 Form of Indemnification Agreement between the Registrant and each officer and director S-1 333-171817 10.1 1/21/2011  
             
 Employment Offer Letter by and between the Registrant and John Amster, dated as of August 9, 2008 S-1 333-171817 10.2 1/21/2011  
             
 Employment Offer Letter by and between the Registrant and Mallun Yen, dated as of October 25, 2010 S-1 333-171817 10.7 1/21/2011  
             
 2008 Stock Plan, as amended S-1 333-171817 10.8 1/21/2011  
             
 Form of Notice of Stock Option Grant (Early Exercise) and Stock Option Agreement under 2008 Stock Plan S-1 333-171817 10.9 1/21/2011  
             
 Form of Notice of Stock Option Grant and Stock Option Agreement under 2008 Stock Plan S-1 333-171817 10.10 1/21/2011  
             
 Form of Notice of Stock Option Exercise (Early Exercise) under 2008 Stock Plan S-1 333-171817 10.11 1/21/2011  
             
 Form of Notice of Stock Option Exercise under 2008 Stock Plan S-1 333-171817 10.12 1/21/2011  
             
 2011 Equity Incentive Plan S-1/A 333-171817 10.25 3/7/2011  
             
 Form of Notice of Stock Option Grant and Stock Option Agreement under 2011 Equity Incentive Plan S-1/A 333-171817 10.32 4/29/2011  
             
 Form of Notice of Stock Option Grant (Non-Employee Directors) and Stock Option Agreement (Non-Employee Directors) under 2011 Equity Incentive Plan S-1/A 333-171817 10.33 4/29/2011  
             
 Form of Notice of Stock Unit Award and Stock Unit Agreement under 2011 Equity Incentive Plan S-1/A 333-171817 10.34 4/29/2011  
             
 Sublease by and between Registrant and Sedgwick, Detert, Moran & Arnold LLP, dated as of September 29, 2009 S-1 333-171817 10.23 1/21/2011  
             
 Office Lease Agreement between Registrant and PPF Paramount One Market Plaza Owner, L.P., dated as of July 28, 2010 S-1 333-171817 10.24 1/21/2011  
             
 First Amendment to Lease between Registrant and PPF Paramount One Market Plaza Owner, L.P., dated as of March 9, 2012 10-K 001-35146 10.31 3/26/2012  
             
 Second Amendment to Lease between Registrant and PPF Paramount One Market Plaza Owner, L.P. dated as of May 31, 2012         X
             
 Third Amendment to Lease between Registrant and PPF Paramount One Market Plaza Owner, L.P. dated as of June 26, 2017         X
             
 Asset Purchase Agreement (Redacted), dated December 22, 2014, by and among Rockstar Consortium US LP, Rockstar Consortium LLC, Bockstar Technologies LLC, Constellation Technologies LLC, MobileStar Technologies LLC, NetStar Technologies LLC, RPX Clearinghouse LLC, and the Registrant 8-K/A 001-35146 10.1 4/9/2015  
             
 Employment Offer Letter by and between the Registrant and Robert Heath, dated as of March 15, 2011 10-K 001-35146 10.29 3/2/2015  
             
 Agreement and Plan of Merger entered into on December 13, 2015 8-K 001-35146 2.1 1/28/2016  
             
 Agreement, dated May 25, 2016, by and among RPX Corporation, the Mangrove Partners Master Fund, Ltd. and Mangrove Partners 8-K 001-35146 10.1 5/26/2016  
             

 Employment Offer Letter by and between the Registrant and Trevor Campion, dated as of January 21, 2016 10-Q 001-35146 10.1 5/10/2016  
             
 Credit Agreement, dated as of February 26, 2016, by and among RPX Corporation, JPMorgan Chase Bank, N.A., as administrative agent and collateral agent, and the lenders party thereto 8-K 001-35146 10.1 3/1/2016  
             
 Employment Offer Letter by and between the Registrant and Steven Swank, dated as of June 7, 2010 10-Q 001-35146 10.1 5/4/2017  
             
 RPX Corporation Compensation Program for Non-Employee Directors, as Amended May 23, 2017 10-Q 001-35146 10.1 8/3/2017  
             
 Employment Offer Letter by and between the Registrant and David Anderson, dated as of October 12, 2010 10-Q 001-35146 10.2 8/3/2017  
             
 Separation Agreement by and between the Registrant and Steven S. Swank dated as of February 1, 2018 8-K 001-35146 10.1 2/5/2018  
             
 Employment Offer Letter by and between the Registrant and Martin Roberts, dated as of September 17, 2010         X
             
 List of subsidiaries of the Registrant         X
             
 Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm         X
             
 Power of Attorney (Included in Signature Page)         X
             
 Certification of Chief Executive Officer Pursuant to Rule 13-14(a) of the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.         X
             
 Certification of Chief Financial Officer Pursuant to Rule 13-14(a) of the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.         X
             
 Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.         X
             
 Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.         X
             
101.INS XBRL Instance Document         X
             
101.SCH XBRL Taxonomy Extension Schema Document         X
             
101.CAL XBRL Taxonomy Extension Calculation Linkbase Document         X
             
101.DEF XBRL Taxonomy Extension Definition Linkbase Document         X
             
101.LAB XBRL Taxonomy Extension Label Linkbase Document         X
             
101.PRE XBRL Taxonomy Extension Presentation Linkbase Document         X
* Indicates a management contract or compensatory plan.
† Portions of this exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to an order granting confidential treatment.


SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
     
  RPX CORPORATION
  (Registrant)
   
April 28, 2016March 5, 2018 By: /s/ John A. AmsterMARTIN E. ROBERTS
    John A. AmsterMartin E. Roberts
    Chief Executive Officer
    (Principal Executive Officer)


POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Martin E. Roberts and David J. Anderson, jointly and severally, as his true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any amendments to this Annual Report on Form 10-K, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his substitute or substitutes, may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Annual Report on Form 10-K has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
EXHIBIT INDEX
    Incorporated by Reference  
Exhibit
Number
 Exhibit Title Form File No. Exhibit
No.
 Filing
Date
 Provided
Herewith
       
31.1 Certification of Chief Executive Officer Pursuant to Rule 13-14(a) of the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.         X
       
31.2 Certification of Chief Financial Officer Pursuant to Rule 13-14(a) of the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.         X
       
32.1 Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Form 10-K 001-35146 32.1 February 26, 2016  
       
32.2 Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Form 10-K 001-35146 32.2 February 26, 2016  
             

SignatureTitleDate
/s/ MARTIN E. ROBERTSChief Executive Officer (Principal Executive Officer)March 5, 2018
Martin E. Roberts
/s/ DAVID J. ANDERSONChief Financial Officer (Principal Financial and Accounting Officer)March 5, 2018
David J. Anderson
/s/ SHELBY W. BONNIEChairman of the Board of DirectorsMarch 5, 2018
Shelby W. Bonnie
/s/ ANDREW D. AFRICKDirectorMarch 5, 2018
Andrew D. Africk
/s/ FRANK E. DANGEARDDirectorMarch 5, 2018
Frank E. Dangeard
/s/ STEVEN L. FINGERHOODDirectorMarch 5, 2018
Steven L. Fingerhood
/s/ GILBERT S. PALTERDirectorMarch 5, 2018
Gilbert S. Palter
/s/ SANFORD R. ROBERTSONDirectorMarch 5, 2018
Sanford R. Robertson
/s/ MALLUN YENDirectorMarch 5, 2018
Mallun Yen
/s/ MAGDALENA YESILDirectorMarch 5, 2018
Magdalena Yesil


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