Exhibit 99.1

       InterDigital Files Complaint Against Samsung Electronics
                 with International Trade Commission

    ITC Asked to Determine If Samsung's 3G WCDMA Products Infringed
                             U.S. Patents

    KING OF PRUSSIA, Pa.--(BUSINESS WIRE)--March 23,
2007--InterDigital Communications Corporation (NASDAQ:IDCC) today
announced that the company and its wholly-owned subsidiary,
InterDigital Technology Corporation, have filed a complaint with the
U.S. International Trade Commission (ITC) against Samsung Electronics
Co. Ltd. and certain of its affiliates. The complaint alleges that
Samsung engaged in an unfair trade practice by making for importation
into the United States, importing, and selling after importation
certain 3G handsets and components that infringe three of
InterDigital's patents. InterDigital also has filed a complaint in the
United States District Court for the District of Delaware alleging
that Samsung's 3G WCDMA handsets infringe the InterDigital patents
identified in InterDigital's ITC complaint.

    InterDigital's complaint with the ITC seeks an exclusion order
which operates to bar from entry into the U.S. infringing 3G WCDMA
handsets and components that are imported by or on behalf of Samsung.
Handsets identified in the complaint as capable of operating with a 3G
WCDMA system and infringing InterDigital's patents include: SGH-ZX20;
SGH-i607 (also known as the "BlackJack(TM)"); SGH-A707; and SGH-ZX10.
InterDigital's complaint also seeks a cease and desist order to bar
further sales of infringing Samsung products that have already been
imported into the United States.

    "The vast majority of our patent license agreements have been
reached without the need for litigation," said William J. Merritt,
President and Chief Executive Officer of InterDigital. "While we have
had extensive discussions with Samsung on patent licensing matters, we
have been unable to come to an agreement. We are committed to resolve
our patent licensing discussions in a timely manner and remain open to
a business resolution. However, if we cannot negotiate an agreement,
we will aggressively defend our intellectual property rights and
enforce legally binding judgments."

    By statute, the ITC has 30 days from the filing of the complaint
to decide whether to formally institute an investigation. Assuming an
investigation is instituted, the typical schedules used by the ITC
would result in a trial on the matter by January 2008.

    Note to Editors:

    In August 2006, an Arbitral Tribunal operating under the auspices
of the International Chamber of Commerce (ICC) rendered a final Award
in an arbitration proceeding between the parties. In its Award, the
Arbitral Tribunal ordered Samsung to promptly pay InterDigital
approximately $134 million in past royalties owed under the parties'
1996 patent license agreement, plus interest based on Samsung's sale
of single-mode 2G GSM/TDMA and 2.5G GSM/GPRS/EDGE terminal units
through 2005 and established royalty rates applicable to Samsung's
sales of all covered products in 2006 (Samsung Award). To date,
Samsung has not made any of the payments required by the Arbitral
Tribunal.

    In September 2006, InterDigital filed an action in the United
States District Court for the Southern District of New York seeking
judicial confirmation of the Samsung Award. Samsung filed an
opposition to the confirmation action, including filing a
cross-petition to vacate or modify the Samsung Award and to stay the
Samsung Award. No timetable for the ruling on this matter has been
established.

    In October 2006, Samsung filed a request for a new ICC arbitration
proceeding relating to the ongoing patent royalty dispute between
Samsung and InterDigital (Samsung 2006 Arbitration). In the Samsung
2006 Arbitration, Samsung seeks to have a new arbitration panel
determine new royalty rates for Samsung's 2G/2.5G GSM/GPRS/EDGE
product sales based on the settlement reached in April 2006 between
InterDigital and Nokia Corporation (Nokia Settlement), which
implemented the arbitral award issued in June 2005 in a dispute
between Nokia Corporation and InterDigital. InterDigital has denied
that Samsung is entitled to receive any new royalty rate adjustment
based on the Nokia Settlement.

    As of December 31, 2006, InterDigital's intellectual property
portfolio consisted of 767 U.S. patents and 2,386 non-U.S. patents. In
addition, the portfolio included 1,163 pending patent applications in
the U.S. and 7,660 pending non-U.S. patent applications. The patents
and applications comprising our portfolio relate specifically to
digital wireless radiotelephony technology.

    About InterDigital

    InterDigital Communications Corporation designs, develops, and
provides advanced wireless technologies and products that drive voice
and data communications. InterDigital is a leading contributor to the
global wireless standards and holds a strong portfolio of patented
technologies which it licenses to manufacturers of 2G, 2.5G, 3G and
802 products worldwide. Additionally, the company offers baseband
product solutions and protocol software for 3G multimode terminals and
converged devices. InterDigital's differentiated technology and
product solutions deliver time-to-market, performance and cost
benefits.

    For more information, please visit InterDigital's web site:
www.interdigital.com.

    InterDigital is a registered trademark of InterDigital
Communications Corporation.

    All other trademarks are the sole property of their respective
owners.

    CONTACT: InterDigital Communications Corporation
             Media Contact:
             Jack Indekeu, +1 610-878-7800
             jack.indekeu@interdigital.com
             or
             Investor Contact:
             Janet Point, +1 610-878-7800
             janet.point@interdigital.com