<SEC-DOCUMENT>0001019687-13-002248.txt : 20130606
<SEC-HEADER>0001019687-13-002248.hdr.sgml : 20130606
<ACCEPTANCE-DATETIME>20130606161428
ACCESSION NUMBER:		0001019687-13-002248
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20130606
DATE AS OF CHANGE:		20130606
EFFECTIVENESS DATE:		20130606

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACACIA RESEARCH CORP
		CENTRAL INDEX KEY:			0000934549
		STANDARD INDUSTRIAL CLASSIFICATION:	PATENT OWNERS & LESSORS [6794]
		IRS NUMBER:				954405754
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-189135
		FILM NUMBER:		13897511

	BUSINESS ADDRESS:	
		STREET 1:		500 NEWPORT CENTER DRIVE
		STREET 2:		7TH FLOOR
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
		BUSINESS PHONE:		9494808300

	MAIL ADDRESS:	
		STREET 1:		500 NEWPORT CENTER DRIVE
		STREET 2:		#
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>acacia_s8.htm
<DESCRIPTION>FORM S-8
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange
Commission on June 6, 2013</B></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-_____</B></P>

<!-- Field: Rule-Page --><DIV ALIGN="CENTER" STYLE="margin-top: 3pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="text-transform: uppercase"><B>Washington</B></FONT><B>,
D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">_______________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM S-8</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REGISTRATION STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="text-transform: uppercase"><B>Under</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>THE SECURITIES ACT OF 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>_______________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="text-transform: uppercase"><B>ACACIA
RESEARCH Corporation</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact name of registrant as specified in
its charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Delaware</B></FONT></TD>
    <TD STYLE="width: 50%; padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>95-4405754</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt">(State or other jurisdiction of</FONT></TD>
    <TD STYLE="padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt">(I.R.S. Employer</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt">incorporation or organization)</FONT></TD>
    <TD STYLE="padding-right: 4.5pt; padding-left: 4.5pt; text-align: center"><FONT STYLE="font-size: 10pt">Identification Number)</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>500&nbsp;Newport Center Drive</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Newport Beach, California 92660</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Address of Principal Executive Offices)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>2013 Acacia Research Corporation Stock
Incentive Plan</B><BR>
(Full title of the plan)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Paul&nbsp;R. Ryan</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Chief Executive Officer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>500&nbsp;Newport Center Drive</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Newport Beach, California 92660</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Name and address of agent for service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(949)&nbsp;480-8300</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Telephone number, including area code,
of agent for service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Copies to: </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Mark L. Skaist, Esq. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Michael L. Lawhead, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Stradling Yocca Carlson &amp; Rauth</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>660 Newport Center Drive, Suite 1600
</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Newport Beach, CA 92660</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(949) 725-4000</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of &ldquo;large accelerated
filer,&rdquo; &ldquo;accelerated filer&rdquo; and &ldquo;smaller reporting company&rdquo; in Rule&nbsp;12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 22%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 2%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 22%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 2%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 23%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 1%; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="width: 28%; padding-right: -27pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding-right: -27pt"><FONT STYLE="font-size: 10pt">Large accelerated filer <FONT STYLE="font-family: Wingdings">&thorn;</FONT></FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: -27pt; text-align: center"><FONT STYLE="font-size: 10pt">Accelerated filer<FONT STYLE="font-family: Wingdings">o</FONT>&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: -27pt; text-align: center"><FONT STYLE="font-size: 10pt">Non-accelerated filer <FONT STYLE="font-family: Wingdings">o</FONT> </FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: -27pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: -27pt; text-align: center"><FONT STYLE="font-size: 10pt">Smaller reporting company <FONT STYLE="font-family: Wingdings">o</FONT></FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CALCULATION OF REGISTRATION FEE</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 32%; border-top: windowtext 1.5pt double; border-right: windowtext 1pt solid; border-left: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Title of securities to be registered</B></P></TD>
    <TD STYLE="width: 17%; border-top: windowtext 1.5pt double; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount to be</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>registered (1)</B></P></TD>
    <TD STYLE="width: 17%; border-top: windowtext 1.5pt double; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed maximum </B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>offering price per share (2)</B></P></TD>
    <TD STYLE="width: 17%; border-top: windowtext 1.5pt double; border-right: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed maximum </B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>aggregate offering price (2)</B></P></TD>
    <TD STYLE="width: 17%; border-top: windowtext 1.5pt double; border-right: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount of</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>registration fee </B></P></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; border-right: windowtext 1pt solid; border-left: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">Common Stock, $0.001 par value</FONT><BR>
<FONT STYLE="font-size: 10pt">(options available for future grant) &#9;</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">4,750,000 shares</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">$23.56</TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">$111,910,000<FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1.5pt double; border-bottom: windowtext 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">$15,264.52<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT></TD></TR>
<TR>
    <TD STYLE="border-right: windowtext 1pt solid; border-left: windowtext 1.5pt double; border-bottom: windowtext 1.5pt double; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt; text-transform: uppercase">total </FONT></TD>
    <TD STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1.5pt double; padding-top: 6pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">4,750,000 shares </FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1pt solid; border-bottom: windowtext 1.5pt double; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">$23.56</TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1.5pt double; border-bottom: windowtext 1.5pt double; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">$111,910,000&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-right: windowtext 1.5pt double; border-bottom: windowtext 1.5pt double; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">$15,264.52</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 22.3pt">(1)</TD><TD>Pursuant to Rule 416(c) under the Securities Act of 1933, this registration statement also covers an indeterminate number of
additional shares which may be necessary to adjust the number of shares issuable pursuant to the 2013 Acacia Research Corporation
Stock Incentive Plan as the result of any stock split, stock dividend, recapitalization, combination of shares, exchange of shares
or other change effected without the receipt of consideration which results in an increase in the number of outstanding shares
of Common Stock of the Registrant.</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 22.3pt">(2)</TD><TD>Estimated solely for the purpose of calculating the registration
fee pursuant to Rule 457(c) and (h) of the Securities Act of 1933, and based on the average of the high and low sale prices of
the Registrant&rsquo;s Common Stock, as reported on the <FONT STYLE="text-transform: uppercase">Nasdaq</FONT> Global Select Market
on June 4, 2013.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE SECTION 10(a)
PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: left; text-indent: 0.5in"><FONT STYLE="font-weight: normal; text-transform: none">The
documents containing the information specified in Part I of Form S-8 will be sent or given to the individuals who participate in
the 2013 Acacia Research Corporation Stock Incentive Plan (the &ldquo;Plan&rdquo;) in accordance with Rule 428(b)(1) under the
Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;). Such documents are not required to be, and are not, filed
with the Securities and Exchange Commission (the &ldquo;Commission&rdquo;), either as part of this registration statement or as
a prospectus or prospectus supplement pursuant to Rule 424 under the Securities Act. These documents and the documents incorporated
by reference in this registration statement pursuant to Item 3 of Part II of Form S-8, taken together, constitute a prospectus
that meets the requirements of Section 10(a) of the Securities Act.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">PART II</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">INFORMATION
REQUIRED IN THE REGISTRATION STATEMENT</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 3. &#9;Incorporation of Documents by Reference.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The following documents, which have been
filed by Acacia Research Corporation (the &ldquo;Registrant&rdquo;) with the Commission, are incorporated by reference in this
registration statement (excluding any portions of such documents that have been furnished but not filed for purposes of the Securities
Exchange Act of 1934, as amended (the &ldquo;Exchange Act&rdquo;):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="text-underline-style: none">1.</FONT></TD><TD>The Registrant&rsquo;s Annual Report on Form 10-K for the fiscal year ended December 31, 2012, filed with the Commission on
February 28, 2013, and the portions of the Registrant&rsquo;s Definitive Proxy Statement on Schedule 14A, filed with the Commission
on April 24, 2013, incorporated by reference into the Registrant&rsquo;s Annual Report on Form 10-K.</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="text-underline-style: none">2.</FONT></TD><TD>The description of the Registrant&rsquo;s Common Stock contained in the registration statement on Form 8-A filed with the Commission
on December 19, 2002, as amended by Amendment No. 1 to Form 8-A filed with the Commission on August 14, 2008, and any amendment
or report filed with the Commission for the purpose of updating such description.</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="text-underline-style: none">3.</FONT></TD><TD>All other reports filed by the Registrant pursuant to Section 13(a) or 15(d) of the Exchange Act since the end of the fiscal
year covered by the Annual Report on Form 10-K referred to in (1) above.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">All documents that the Registrant subsequently
files under Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates
that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated
by reference in this registration statement and to be a part hereof from the date of filing of such documents; except as to any
portion of any document that is deemed furnished and not deemed filed under such provisions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Any statement contained in a document incorporated
or deemed to be incorporated herein by reference shall be deemed to be modified or superseded for purposes of this registration
statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed
to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of this registration statement.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 4. &#9;Description of Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">Not applicable.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 5.&#9;Interests of Named Experts and Counsel.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">Not applicable.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 6.&#9;Indemnification of Directors and Officers.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">Section
145 of the General Corporation Law of Delaware empowers a corporation to indemnify any person who was or is a party or is threatened
to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative, by reason of the fact that he or she is or was a director, officer, employee or agent of the corporation or another
enterprise if serving at the request of the corporation. Depending on the character of the proceeding, a corporation may indemnify
against expenses (including attorney&rsquo;s fees), judgments, fines and amounts paid in settlement actually and reasonably incurred
in connection with such action, suit or proceeding if the person indemnified acted in good faith and in a manner he or she reasonably
believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding,
had no reasonable cause to believe his or her conduct was unlawful. In the case of an action by or in the right of the corporation,
no indemnification may be made in respect to any claim, issue or matter as to which such person shall have been adjudged to be
liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was
brought shall determine that despite the adjudication of liability, but in view of all the circumstances of the case, such person
is fairly and reasonably entitled to indemnity for such expenses that the court shall deem proper. Section 145 further provides
that to the extent a present or former director or officer of a corporation has been successful in the defense of any action, suit
or proceeding referred to above, or in defense of any claim, issue or matter therein, he or she shall be indemnified against expenses
(including attorney&rsquo;s fees) actually and reasonably incurred by him or her in connection therewith.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">As permitted
by Section 145 of the General Corporation Law of Delaware, Article VIII of the Registrant&rsquo;s restated certificate of incorporation
provides:</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.5in; text-align: justify"><FONT STYLE="font-weight: normal">The
Corporation may indemnify to the fullest extent permitted by law any person made or threatened to be made a party to an action
or proceeding, whether criminal, civil, administrative or investigative, by reason of the fact that such person, his or her testator
or intestate is or was a director, officer or employee of the Corporation or any predecessor of the Corporation or serves or served
at any other enterprise as a director, officer or employee at the request of the Corporation or any predecessor to the Corporation.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">The Registrant
has purchased insurance on behalf of any person who is or was a director, officer, employee or agent of the Registrant, or is or
was serving at the request of the Registrant as a director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise against any liability asserted against him and incurred by him in any such capacity, or arising
out of his status as such, whether or not the Registrant would have the power to indemnify him against such liability under the
provisions of the Registrant's restated certificate of incorporation.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 7.&#9;Exemption from Registration Claimed.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-weight: normal">Not applicable.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 8.&#9;Exhibits.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 13%; padding-right: 4.3pt; padding-left: 4.3pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Exhibit
        Number</B></P></TD>
    <TD STYLE="width: 87%; padding-right: 4.3pt; padding-left: 4.3pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 8.85pt; text-align: center; text-indent: -8.85pt; border-bottom: Black 0.5pt solid"><B>Exhibit</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">4.1</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Amended and Restated Certificate of Incorporation (incorporated by reference to the Registrant&rsquo;s Current Report on Form 8-K filed with the Commission on June 5, 2008 (File No. 000-26068)).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">4.2</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Amended and Restated Bylaws (incorporated by reference to the Registrant&rsquo;s Annual Report on Form 10-K filed with the Commission on February 28, 2013 (File No. 000-26068)).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">5.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Opinion of Stradling Yocca Carlson &amp; Rauth, a Professional Corporation.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">23.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Consent of  Independent Registered Public Accounting Firm. </FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">23.2**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Consent of Stradling Yocca Carlson &amp; Rauth, a Professional Corporation (contained in Exhibit 5.1).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">24.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Power of Attorney (contained on the signature page of this registration statement).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">99.1</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">2013 Acacia Research Corporation Stock Incentive Plan (incorporated by reference to Annex A of the Registrant&rsquo;s Definitive Proxy Statement on Schedule 14A filed with the Commission on April 24, 2013).</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 16.55pt; text-indent: -16.55pt">___________</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 16.55pt">**</TD><TD>Filed herewith</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 9.&#9;Undertakings.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 22pt">(a)&#9;The undersigned Registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.25in">(1)</TD><TD>To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.4in"></TD><TD STYLE="width: 0.35in">(i)</TD><TD>To include any prospectus required by Section&nbsp;10(a)(3)&nbsp;of the Securities Act of 1933;</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.4in"></TD><TD STYLE="width: 0.35in">(ii)</TD><TD>To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most
recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information
set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in the volume of securities offered
(if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant
to Rule&nbsp;424(b)&nbsp;if, in the aggregate, the changes in volume and price represent no more than a 20&nbsp;percent change
in the maximum aggregate offering price set forth in the &ldquo;Calculation of Registration Fee&rdquo; table in the effective registration
statement;</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.4in"></TD><TD STYLE="width: 0.35in">(iii)</TD><TD>To include any material information with respect to the plan of distribution not previously disclosed in the registration statement
or any material change to such information in the registration statement;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.25in"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.25in"><I>Provided, however</I>, that paragraphs (a)(1)(i)&nbsp;and
(a)(1)(ii) of this section&nbsp;do not apply if the information required to be included in a post-effective amendment by those
paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section&nbsp;13 or Section&nbsp;15(d)&nbsp;of
the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.25in"></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.25in">(2)</TD><TD>That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall
be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at
that time shall be deemed to be the initial&nbsp;<I>bona fide</I>&nbsp;offering thereof.</TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.25in">(3)</TD><TD>To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold
at the termination of the offering.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 22pt">(b)&#9;The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant&rsquo;s annual report pursuant
to Section&nbsp;13(a)&nbsp;or Section&nbsp;15(d)&nbsp;of the Securities Exchange Act of 1934 (and, where applicable, each filing
of an employee benefit plan&rsquo;s annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated
by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be the initial&nbsp;<I>bona fide</I>&nbsp;offering
thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 22pt">(h)&#9;Insofar as indemnification for liabilities arising under
the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing
provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person
of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling
person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification
by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.25in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-size: 10pt">Pursuant
to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Newport Beach, State of California, on the 6th day of June, 2013.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 264pt">ACACIA
RESEARCH CORPORATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 264pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 264pt">By:&#9;<U>/s/
Paul R. Ryan&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 286pt">Paul&nbsp;R.
Ryan</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 286pt">Chief Executive Officer</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 286pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt; text-align: left; text-indent: 286pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">POWER OF
ATTORNEY</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The undersigned directors and officers of
Acacia Research Corporation hereby constitute and appoint Paul&nbsp;R. Ryan and Clayton J. Haynes and each of them, as his true
and lawful attorneys-in-fact and agents, with full power to act without the other and with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities to sign any and all amendments (including post-effective amendments)
to this registration statement, and new registration statements relating to this Form S-8, and to file the same with all exhibits
thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact
and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to
be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or either of them, or their or his substitute or substitutes, may lawfully
do or cause to be done by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Pursuant to the requirements of the Securities
Act of 1933, this registration statement has been signed by the following persons in the capacities and on the date indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 27%; border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Paul R. Ryan</FONT></TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 56%"><FONT STYLE="font-size: 10pt">Chief Executive Officer (Principal Executive Officer)</FONT></TD>
    <TD STYLE="width: 15%">June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Paul&nbsp;R. Ryan</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Robert L. Harris, II</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Executive Chairman</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Robert L. Harris, II</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Clayton J. Haynes</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer)</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Clayton J. Haynes</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ William S. Anderson</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">William S. Anderson</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Fred A. de Boom</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Fred A. de Boom</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Edward W. Frykman</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Edward W. Frykman</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ G. Louis Graziadio, III</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">G.&nbsp;Louis Graziadio,&nbsp;III</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
</TABLE>


<P></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">EXHIBIT INDEX</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

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    <TD STYLE="width: 13%; padding-right: 4.3pt; padding-left: 4.3pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Exhibit
        Number</B></P></TD>
    <TD STYLE="width: 87%; padding-right: 4.3pt; padding-left: 4.3pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 8.85pt; text-align: center; text-indent: -8.85pt; border-bottom: Black 0.5pt solid"><B>Exhibit</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">4.1</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Amended and Restated Certificate of Incorporation (incorporated by reference to the Registrant&rsquo;s Current Report on Form 8-K filed with the Commission on June 5, 2008 (File No. 000-26068)).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">4.2</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Amended and Restated Bylaws (incorporated by reference to the Registrant&rsquo;s Annual Report on Form 10-K filed with the Commission on February 28, 2013 (File No. 000-26068)).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">5.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Opinion of Stradling Yocca Carlson &amp; Rauth, a Professional Corporation.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">23.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Consent of &nbsp;Independent Registered Public Accounting Firm. </FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">23.2**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Consent of Stradling Yocca Carlson &amp; Rauth, a Professional Corporation (contained in Exhibit 5.1).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">24.1**</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">Power of Attorney (contained on the signature page of this registration statement).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 6pt; padding-left: 11pt"><FONT STYLE="font-size: 10pt">99.1</FONT></TD>
    <TD STYLE="padding-top: 6pt; padding-right: 4.3pt; padding-left: 4.3pt"><FONT STYLE="font-size: 10pt">2013 Acacia Research Corporation Stock Incentive Plan (incorporated by reference to Annex A of the Registrant&rsquo;s Definitive Proxy Statement on Schedule 14A filed with the Commission on April 24, 2013).</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 16.55pt; text-indent: -16.55pt">___________</P>

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<TD STYLE="width: 0"></TD><TD STYLE="width: 16.55pt">**</TD><TD>Filed herewith</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"></P>

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<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>acacia_ex0501.htm
<DESCRIPTION>OPINION
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Exhibit 5.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Stradling Yocca Carlson &amp; Rauth,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">a Professional Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Attorneys at Law</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">660 Newport Center Drive, Suite 1600</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Newport Beach, California 92660</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">June 6<FONT STYLE="font-size: 10pt; background-color: yellow"><B></B></FONT><FONT STYLE="font-size: 10pt">,
    2013</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Acacia Research Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">500 Newport Center Drive</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Newport Beach, California 92660</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.5in"><B>Re:</B></TD><TD><I>Registration Statement on Form S-8</I></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">At your request, we have examined the Registration
Statement on Form&nbsp;S-8 (the &ldquo;<U>Registration Statement</U>&rdquo;) being filed by Acacia Research Corporation, a Delaware
corporation (the &ldquo;<U>Company</U>&rdquo;), with the Securities and Exchange Commission (the &ldquo;<U>Commission</U>&rdquo;)
in connection with the registration under the Securities Act of 1933, as amended (the &ldquo;<U>Securities Act</U>&rdquo;), of
4,750,000 shares of the Company&rsquo;s common stock, $0.001 par value per share (the &ldquo;<U>Shares</U>&rdquo;), reserved for
issuance under the 2013 Acacia Research Corporation Stock Incentive Plan (the &ldquo;<U>Plan</U>&rdquo;). This opinion is being
furnished in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act, and no opinion is expressed
herein as to any matter pertaining to the contents of the Registration Statement, other than as to the validity of the Shares.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">In our capacity as your counsel in connection
with such registration, we are familiar with the proceedings taken and proposed to be taken by the Company in connection with the
authorization, issuance and sale of the Shares. For purposes of this letter, we have assumed that such proceedings to be taken
in the future will be timely completed in the manner presently proposed and that the terms of each issuance will otherwise be in
compliance with law. In addition, we have examined such matters of fact and questions of law as we have considered appropriate
for purposes of this letter.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">We are opining herein as to the effect on
the subject transaction only of the General Corporation Law of the State of Delaware, and we express no opinion with respect to
the applicability thereto, or the effect thereon, of the laws of any other jurisdiction or, in the case of Delaware, any other
laws, or as to any matters of municipal law or the laws of any local agencies within any state.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Based upon and subject to the foregoing,
it is our opinion that, when issued and sold in the manner contemplated by the Registration Statement and in accordance with the
terms of the Plan, the Shares will be legally and validly issued, fully paid and non-assessable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">This opinion is for your benefit in connection
with the Registration Statement and may be relied upon by you and by persons entitled to rely upon it pursuant to the applicable
provisions of federal securities laws. We consent to the use of this opinion as an exhibit to the Registration Statement and further
consent to the use of our name wherever appearing in the Registration Statement, including any amendments thereto. In giving such
consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities
Act or the rules and regulations of the Commission thereunder. In addition, we give such consent on the condition and understanding
that (i) this letter speaks only as of the date hereof and (ii) we have no responsibility or obligation to update this letter,
to consider its applicability or correctness to other than its addressee, or to take into account changes in law, facts or any
other developments of which we may later become aware.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 3in">Very truly yours,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 3in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in">STRADLING YOCCA CARLSON &amp; RAUTH</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in">/s/ Stradling Yocca Carlson &amp; Rauth</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in"></P>





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<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>acacia_ex2301.htm
<DESCRIPTION>CONSENT
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>EXHIBIT 23.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>&nbsp;</B></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Consent of Independent Registered Public
Accounting Firm</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We have issued our reports dated February
28, 2013 with respect to the consolidated financial statements and internal control over financial reporting included in the Annual
Report on Form 10-K for the year ended December 31, 2012 of Acacia Research Corporation, which are incorporated by reference in
this Registration Statement. We consent to the incorporation by reference in the Registration Statement of the aforementioned reports.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Los Angeles, California</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 6, 2013</P>


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