Edgar Filing: ACACIA RESEARCH CORP

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. )

Acacia Research Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

3881307

(CUSIP Number)

December 31, 2004 and February 9, 2005

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[ X ] Rule 13d-1(b)

[ X ] Rule 13d-1(c)

[ ] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Apex Capital, LLC

2. Check the Appropriate Box if a Member of a Group (See Instructions)

(a) x

(b) ______

3. SEC Use Only

4. Citizenship or Place of Organization California

Number of Shares Beneficially Owned by Each Reporting Person With:	5. Sole Voting Power 0
	6. Shared Voting Power 2,958,300*
	7. Sole Dispositive Power 0
	8. Shared Dispositive Power 2,958,300*

9. Aggregate Amount Beneficially Owned by Each Reporting Person 2,958,300*

10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by Amount in Row (9) 10.9%*

12. Type of Reporting Person (See Instructions)

OO

IA

________

* The information reported above is as of February 11, 2005. As of December 31, 2004, the aggregate amount of shares of common stock of the issuer beneficially owned by Apex Capital, LLC with shared voting power and shared dispositive power was 1,246,800 shares, representing 4.6% of the issuer's total shares outstanding.

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Sanford J. Colen

2. Check the Appropriate Box if a Member of a Group (See Instructions)

(a) x

(b) ______

3. SEC Use Only

4. Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With:	5. Sole Voting Power 45,000*
	6. Shared Voting Power 2,958,300*
	7. Sole Dispositive Power 45,000*
	8. Shared Dispositive Power 2,958,300*

9. Aggregate Amount Beneficially Owned by Each Reporting Person 3,003,300*

10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by Amount in Row (9) 11.0%*

12. Type of Reporting Person (See Instructions)

IN

HC

________

* The information reported above is as of February 11, 2005. As of December 31, 2004, the aggregate amount of shares of common stock of the issuer beneficially owned by Mr. Colen with shared voting power and shared dispositive power was 1,246,800 shares, representing 4.6% of the issuer's total shares outstanding and, as of the same date, he did not own any shares of common stock of the issuer with sole voting power or sole dispositive power.

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Daniel S. Katz

2. Check the Appropriate Box if a Member of a Group (See Instructions)

(a) x

(b) ______

3. SEC Use Only

4. Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With:	5. Sole Voting Power 144,000*
	6. Shared Voting Power 2,958,300*
	7. Sole Dispositive Power 144,000*
	8. Shared Dispositive Power 2,958,300*

9. Aggregate Amount Beneficially Owned by Each Reporting Person 3,102,300*

10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by Amount in Row (9) 11.4%*

12. Type of Reporting Person (See Instructions)

________

* The information reported above is as of February 11, 2005. As of December 31, 2004, the aggregate amount of shares of common stock of the issuer beneficially owned by Mr. Katz (i) with shared voting power and shared dispositive power was 1,246,800 shares, and (ii) with sole voting power and sole dispositive power was 80,000 shares, totaling 1,326,800 shares, or 4.9% of the issuer's total shares outstanding.

Item 1.

(a) Name of Issuer

Acacia Research Corporation

(b) Address of Issuer's Principal Executive Offices

500 Newport Center Drive, Newport Beach, CA 92660

Item 2.

(a) The names of the persons filing this statement are:

Apex Capital, LLC ("LLC")

Sanford J. Colen ("Colen")

Daniel S. Katz ("Katz")

(collectively, the "Filers").

(b) The principal business office of the Filers is located at:

25 Orinda Way, Suite 300, Orinda, CA 94563

(d) This statement relates to shares of common stock of the Issuer (the "Stock").

(e) The CUSIP number of the Issuer is: 3881307

Item 3. If this statement is filed pursuant to rule 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ X ] An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E) (as to LLC).

(f) [ ] An employee benefit plan or endowment fund in accordance with section 240.13d-1(b)(1)(ii)(F).

(g) [ X ] A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G) (as to Colen).

(h) [ ] A savings association as defined in section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).

(j) [ ] Group, in accordance with section 240.13d-1(b)(1)(ii)(J).

Item 4. Ownership.

See Items 5-9 and 11 and the attendant footnotes of the cover page for each Filer.

Item 5. Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ ].

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

LLC is a registered investment adviser whose clients have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Stock. Colen is the Manager of LLC. Katz is a portfolio manager for LLC. No single client of LLC holds more than five percent of the outstanding Stock.

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not applicable.

Item 8. Identification and Classification of Members of the Group.

LLC is a registered investment adviser. Colen is the controlling member of of LLC.

Item 9. Notice of Dissolution of Group

Not applicable.

Item 10. Certification.

As to LLC and Colen:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

As to Katz:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 11, 2005

APEX CAPITAL, LLC

By: /s/ Sanford J. Colen

Print Name: Sanford J. Colen

Title: Manager

/s/ Sanford J. Colen

Sanford J. Colen

/s/ Daniel S. Katz

Daniel S. Katz

EXHIBIT A

AGREEMENT REGARDING JOINT FILING

OF STATEMENT ON SCHEDULE 13D OR 13G

The undersigned agree to file jointly with the Securities and Exchange Commission (the "SEC") any and all statements on Schedule 13D or Schedule 13G (and any amendments or supplements thereto) required under section 13(d) of the Securities Exchange Act of 1934, as amended, in connection with purchases by the undersigned of securities of any issuer, until such time as the undersigned file with the SEC a statement terminating this Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G. For that purpose, the undersigned hereby constitute and appoint Apex Capital, LLC, a California limited liability company, as their true and lawful agent and attorney-in-fact, with full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section 16(a) of the Securities Exchange Act of 1934, as amended, in connection with said purchases, and to do and perform every act necessary and proper to be done incident to the exercise of the foregoing power, as fully as the undersigned might or could do if personally present, until such time as the undersigned file with the SEC a statement terminating this Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G.

Dated: February 10, 2005

SANFORD J. COLEN /s/ Sanford J. Colen	DANIEL S. KATZ /s/ Daniel S. Katz

APEX CAPITAL, LLC By: /s/ Sanford J. Colen, Manager	WILLIAM E. STUDEBAKER /s/ William E. Studebaker