United States securities and exchange commission logo





                             February 21, 2023

       Christopher Marlett
       Chief Executive Officer
       MDB Capital Holdings, LLC
       4209 Meadowdale Lane
       Dallas, TX 75229

                                                        Re: MDB Capital
Holdings, LLC
                                                            Amendment No. 2 to
Registration Statement on Form S-1
                                                            Filed on February
2, 2023
                                                            File No. 333-268318

       Dear Christopher Marlett:

             We have reviewed your amended registration statement and have the
following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe our comments apply to your
facts and
       circumstances or do not believe an amendment is appropriate, please tell
us why in your
       response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to these comments, we may have additional comments.
Unless we note
       otherwise, our references to prior comments are to comments in our
January 20, 2023 letter.

       Amendment No. 2 to Registration Statement on Form S-1

       General

   1.                                                   We note your response
to our prior comment 3 and your revised disclosure. Please revise
                                                        to disclose the
percentage of outstanding shares that controlling shareholders must keep in
                                                        order to continue to
control the outcome of matters submitted to shareholders for
                                                        approval.
   2.                                                   We note your response
to our comment 25 in the December 7, 2022 letter. You state that
                                                        you    do[] not hold
any    investment securities    as defined in the Investment Company
                                                        Act.    We note on page
F-2 of Amendment No. 2 to Form S-1 filed on February, 2023 that
                                                        there are three line
items titled    Investment Securities at amortized cost, Investment
                                                        Securities at fair
value and Investment Securities at cost less impairment.    Please provide
 Christopher Marlett
MDB Capital Holdings, LLC
February 21, 2023
Page 2
         a complete and detailed legal analysis of your status as an investment
company under
         Section 3(a)(1)(C), including a breakdown of    investment securities
  under Section
         3(a)(2) and the calculation of investment securities as a percentage
of total assets on an
         unconsolidated basis, including with respect to valuation per section
2(a)(41). Please also
         identify which, if any, assets are government securities and cash
items.

         You note in your response to comment 25 that you rely on Section
3(b)(1) of the
         Investment Company Act. Accordingly, please provide additional
detailed analysis of the
         legal basis for such reliance, including a discussion of the Tonopah
factors and the
         application of those factors to you, including a description of how
your activities and
         investments during years 2020, 2021 and 2022 affect this analysis. See
In re Tonopah
         Mining Co., 26 S.E.C. 426 (1947).
Risk Factors, page 11

3.       We note recent instances of extreme stock price run-ups followed by
rapid price declines
         and stock price volatility seemingly unrelated to company performance
following a
         number of recent initial public offerings, particularly among
companies with relatively
         smaller public floats. Revise to include a separate risk factor
addressing the potential for
         rapid and substantial price volatility and any known factors
particular to your offering that
         may add to this risk and discuss the risks to investors when investing
in stock where the
         price is changing rapidly. Clearly state that such volatility,
including any stock-run up,
         may be unrelated to your actual or expected operating performance and
financial
         condition or prospects, making it difficult for prospective investors
to assess the rapidly
         changing value of your stock.
Arizona Law Firm Regulation, page 72

4.       We note your response to our prior comment 10 and reissue in part.
Please advise and
         expand your disclosure, if applicable, regarding any additional
regulatory
         approvals necessary for PatentVest to launch its law firm operations
once it is a subsidiary
         of a public company.
Selling security holders, page 5
FirstName LastNameChristopher Marlett
5.     We note your response to our prior comment 6 and your revised
disclosure. Please
Comapany   NameMDB
       provide           Capital Holdings,
                us your analysis  regarding LLC
                                            the availability of the Section
4(a)(2) exemption for the
       shares issued to
February 21, 2023 Page 2the selling security holders.
FirstName LastName
 Christopher Marlett
FirstName LastNameChristopher  Marlett
MDB Capital  Holdings, LLC
Comapany21,
February   NameMDB
            2023      Capital Holdings, LLC
February
Page 3 21, 2023 Page 3
FirstName LastName
        You may contact William Schroeder at (202) 551-3294 or Amid Pande at
(202) 551-
3423 if you have questions regarding comments on the financial statements and
related
matters. Please contact Tonya K. Aldave at (202) 551-3601 or Susan Block at
(202) 551-
3210 with any other questions.



                                                        Sincerely,

                                                        Division of Corporation
Finance
                                                        Office of Finance
cc:      Andrew Hudders, Esq.