Acacia Files Additional Patent Infringement Lawsuits against Cable TV Companies; Lawsuits Follow Recent Licensing of 4 Cable Companies.

NEWPORT BEACH, Calif. -- Acacia Research Corporation (Nasdaq:ACTG)(Nasdaq:CBMX) announced today that its Acacia Media Technologies Corporation subsidiary has initiated patent infringement litigation against cable companies located in Arizona, Minnesota, and Ohio, for infringement of Acacia's DMT(R) Patents.

The Company previously initiated patent infringement litigation in June of this year against 6 cable companies in the Northern District of California, 3 of which have settled and signed licensing agreements.

Companies named in the lawsuits include Armstrong Group, Arvig Communication Systems, Block Communications, Inc., Cable America Corporation, Cable One, Inc., Cable System Services, Inc., Cannon Valley Communications, Inc., East Cleveland Cable TV and Communications, LLC, Loretel Cablevision, Massillon Cable TV, Inc., Mid-Continent Media, Inc., Nelsonville TV Cable, Inc., NPG Cable, Inc., Precis Communications, Inc., San Carlos Cablevision, LLC, Savage Communications, Inc., Sjoberg's Cablevision, Inc., US Cable, and Wide Open West, LLC. The Company also announced today that it added Mediacom LLC to its Northern California litigation.

Paul Ryan, Chairman and Chief Executive Officer commented, "We continue to make great progress with our DMT(R) licensing program. Of our 175 licensing agreements, 140 licenses were signed without the need for litigation and 35 were signed after litigation was initiated. Although we have recently licensed four cable TV companies and are making progress in licensing discussions with several other cable companies, it may be necessary to bring lawsuits from time to time to enforce our intellectual property."

Rob Berman, Executive Vice President and General Counsel stated, "Litigation is often a necessary part of the licensing business. Experience has shown us that litigation is required before some companies enter into serious licensing discussions. Although litigation is not our preferred course of action, we are prepared to see these cases through to trial if necessary."

Acacia has entered into 175 license agreements for its DMT(R) technology for cable TV, corporate websites, e-learning, hotel on-demand TV services, and online entertainment, movies, music, news, and sports.

ABOUT ACACIA RESEARCH CORPORATION

Acacia Research Corporation comprises two operating groups, Acacia Technologies group and CombiMatrix group.

The Acacia Technologies group develops, acquires, and licenses patented technologies. Acacia's DMT(R) technology, which is supported by 5 U.S. and 31 foreign patents, relates to audio and audio/video transmission and receiving systems commonly known as audio-on-demand, video-on-demand, and audio/video streaming, and is used for distributing digital content via several means including Internet, cable, satellite and wireless systems. Acacia's Internet Access Redirection ("IAR") technology covers redirected Internet registrations commonly used at wireless hotspots and hotels.

The CombiMatrix group is developing a platform technology to rapidly produce customizable active biochips, which are semiconductor-based tools for use in identifying and determining the roles of genes, gene mutations and proteins. CombiMatrix's technology has a wide range of applications including DNA synthesis/diagnostics, drug discovery, and immunochemical detection. CombiMatrix's Express Track(sm) drug discovery program is a systems biology approach, using its technology, to target common viral diseases with siRNA compounds.

Acacia Research-Acacia Technologies (Nasdaq:ACTG) and Acacia Research-CombiMatrix (Nasdaq:CBMX) are both classes of common stock issued by Acacia Research Corporation and are intended to reflect the performance of the respective operating groups and are not issued by the operating groups.

Information about the Acacia Technologies group and the CombiMatrix group is available at www.acaciaresearch.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

This news release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements are based upon our current expectations and speak only as of the date hereof. Our actual results may differ materially and adversely from those expressed in any forward-looking statements as a result of various factors and uncertainties, including the recent economic slowdown affecting technology companies, our ability to successfully develop products, rapid technological change in our markets, changes in demand for our future products, legislative, regulatory and competitive developments and general economic conditions. Our Annual Report on Form 10-K, recent and forthcoming Quarterly Reports on Form 10-Q, recent Current Reports on Forms 8-K and 8-K/A, and other SEC filings discuss some of the important risk factors that may affect our business, results of operations and financial condition. We undertake no obligation to revise or update publicly any forward-looking statements for any reason.