SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* SPANGENBERG ERICH (Last) (First) (Middle) 2515 MCKINNEY AVENUE, SUITE 1000 (Street) DALLAS TX 75201 (City) (State) (Zip)	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)
	3. Date of Earliest Transaction (Month/Day/Year) 05/31/2013
	4. If Amendment, Date of 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

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)

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 Securities Underlying Derivative Security (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: 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)

1. Name and Address of Reporting Person* SPANGENBERG ERICH (Last) (First) (Middle) 2515 MCKINNEY AVENUE, SUITE 1000 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TechDev Holdings, LLC (Last) (First) (Middle) 11700 PRESTON ROAD, SUITE 660-207 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Acclaim Financial Group, LLC (Last) (First) (Middle) 11700 PRESTON ROAD, SUITE 660-207 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Spangenberg Audrey (Last) (First) (Middle) 2515 MCKINNEY AVENUE, SUITE 1000-B (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

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.

	TechDev Holdings, LLC, By: /s/ Audrey Spangenberg, Title: Manager	06/07/2013
	Acclaim Financial Group, LLC, By: /s/ Audrey Spangenberg, Title: Managing Director	06/07/2013
	Audrey Spangenberg, By: /s/ Audrey Spangenberg	06/07/2013
	Erich Spangenberg, By: /s/ Erich Spangenberg	06/07/2013
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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