FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SPANGENBERG ERICH
   2. Issuer Name and Ticker or Trading Symbol
Marathon Patent Group, Inc. [MARA] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
2515 MCKINNEY AVENUE, SUITE 1000		 3. Date of Earliest Transaction (Month/Day/Year)
05/31/2013
(Street)

DALLAS, TX 75201		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, $0.0001 par value per share 05/31/2013   P   625,000 A $ 0.4 (1) 625,000 I By IPNav Capital, LLC (2)
Common Stock, $0.0001 par value per share               6,000,000 I By TechDev Holdings, LLC (3) (4)
Common Stock, $0.0001 par value per share               2,000,000 D (5)  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrant to Purchase Common Stock $ 0.5 05/31/2013   P   312,500   05/31/2013 05/31/2016 Common Stock 312,500 (1) 312,500 I By IPNav Capital, LLC (2)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SPANGENBERG ERICH
2515 MCKINNEY AVENUE, SUITE 1000
DALLAS, TX 75201		     X    
TechDev Holdings, LLC
11700 PRESTON ROAD, SUITE 660-207
DALLAS, TX 75201		     X    
Acclaim Financial Group, LLC
11700 PRESTON ROAD, SUITE 660-207
DALLAS, TX 75201		     X    
Spangenberg Audrey
2515 MCKINNEY AVENUE, SUITE 1000-B
DALLAS, TX 75201		     X    

Signatures

 TechDev Holdings, LLC, By: /s/ Audrey Spangenberg, Title: Manager   06/07/2013
**Signature of Reporting Person Date
 Acclaim Financial Group, LLC, By: /s/ Audrey Spangenberg, Title: Managing Director   06/07/2013
**Signature of Reporting Person Date
 Audrey Spangenberg, By: /s/ Audrey Spangenberg   06/07/2013
**Signature of Reporting Person Date
 Erich Spangenberg, By: /s/ Erich Spangenberg   06/07/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The shares of common stock and warrants were purchased by IPNav Capital, LLC ("IPNav Capital") in the Issuer's private placement for $250,000.
(2) Represents shares held directly by IPNav Capital. IP Navigation Group, LLC is the sole member of IPNav Capital. Erich Spangenberg is the managing member and owner of 90% of the membership interests in IP Navigation Group, LLC. Accordingly, Erich Spangenberg may be deemed to beneficially own all of the shares that are owned by IPNav Capital. Mr. Spangenberg disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission that Mr. Spangenberg is the beneficial owner of these securities for the purpose of Section 16 or for any other purpose.
(3) Represents shares held directly by TechDev Holdings, LLC (f/k/a Plutus IP, LLC) ("TechDev") as reported on the Form 3 filed by the reporting persons on May 2, 2013. Acclaim Financial Group, LLC ("AFG") is the sole member of TechDev. Accordingly, AFG may be deemed to beneficially own all of the shares that are owned by TechDev. Audrey Spangenberg is the sole managing member of AFG, and accordingly may be deemed to beneficially own all of the shares that are owned by TechDev. Ms. Spangenberg disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, (continue in footnote 4)
(4) (continue from footnote 3) and the inclusion of these shares in this report shall not be deemed an admission that Ms. Spangenberg is the beneficial owner of these securities for the purpose of Section 16 or for any other purpose. Erich Spangenberg, the spouse of Audrey Spangenberg, may be deemed to beneficially own all of the shares that are owned by Audrey Spangenberg. Mr. Spangenberg disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission that Mr. Spangenberg is the beneficial owner of these securities for the purpose of Section 16 or for any other purpose.
(5) Represents shares held directly by Erich Spangenberg as reported on the Form 3 filed by the reporting persons on May 2, 2013. Audrey Spangenberg, the spouse of Erich Spangenberg, may be deemed to beneficially own all of the shares that are owned by Erich Spangenberg. Ms. Spangenberg disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission that Ms. Spangenberg is the beneficial owner of these securities for the purpose of Section 16 or for any other purpose.

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