CombiMatrix' Announces First CombiCore(TM) Access Program with the University of Colorado; University of Colorado to Obtain Widespread Access to CombiMatrix Microarray Technology.

NEWPORT BEACH, Calif. -- Acacia Research Corporation (Nasdaq:CBMX)(Nasdaq:ACTG) announced today that its CombiMatrix group has signed a non-exclusive agreement with The University of Colorado Health Sciences Center under the Company's CombiCore(TM) access program. Under this agreement all University of Colorado researchers can purchase, through their microarray core facility, CombiMatrix' CustomArrays(TM) and CatalogArrays(TM), including array processing services performed at the University of Colorado Health Science Center Microarray Core Facility (UCHSC).

"Our Core lab is dedicated to providing high-quality microarray laboratory instruction, service, and consultation to the research and clinical community affiliated with UCHSC and other research institutions throughout the nation. This program provides us an opportunity to support our customers with more microarray choices for their specific needs," stated Dr. Bifeng Gao, the UCHSC Core Facility Manager.

"The University of Colorado is one of the nation's largest academic consumers of microarrays," said Michael Tognotti, Vice President of Sales and Marketing of CombiMatrix. "Now researchers can purchase our products through the UCHSC Core Facility, in addition to array processing services which include sample processing and data analysis. This agreement provides researchers with unique access to our products by enabling one of the world's most experienced Microarray Core Facilities providing complete array services and application training."

"CombiMatrix' CombiCore program is a special program designed to meet the unique needs of academic organizations, with core microarray facilities, that want broad access to CombiMatrix's DNA microarray technology," said Dr. Amit Kumar President and CEO of CombiMatrix. "This program is designed to leverage the infrastructure that already exists at each university to market, sell and deliver products. We hope to add additional university core laboratories to our CombiCore program."

The University of Colorado at Denver and Health Sciences Center is one of three campuses in the University of Colorado system. Located in Denver and Aurora, Colo., the center includes schools of medicine, nursing, pharmacy, and dentistry, a graduate school and a teaching hospital. For more information, visit the Web site at http://microarray.uchsc.edu/.

ABOUT ACACIA RESEARCH CORPORATION

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

The CombiMatrix group is developing a platform technology to rapidly produce customizable arrays, which are semiconductor-based tools for use in identifying and determining the roles of genes, gene mutations and proteins. The CombiMatrix's group's technology has a wide range of potential applications in the areas of genomics, proteomics, biosensors, drug discovery, drug development, diagnostics, combinatorial chemistry, material sciences and nanotechnology.

The Acacia Technologies group develops, acquires, and licenses patented technologies. Acacia controls 38 patent portfolios, which include over 140 U.S. patents, and certain foreign counterparts, covering technologies used in a wide variety of industries including audio/video enhancement & synchronization, broadcast data retrieval, computer memory cache coherency, credit card fraud protection, database management, data encryption & product activation, digital media transmission (DMT(R)), digital video production, dynamic manufacturing modeling, enhanced Internet navigation, hearing aid ECS, image resolution enhancement, interactive data sharing, interactive television, interstitial Internet advertising, laptop docking station connectivity, microprocessor enhancement, multi-dimensional bar codes, network data storage, resource scheduling, rotational video imaging and spreadsheet automation.

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 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.