Acacia Technologies Enters into License Agreement with Philips Electronics

NEWPORT BEACH, Calif.--June 9, 2006--Acacia Research Corporation (Nasdaq:ACTG) (Nasdaq:CBMX) announced today that IP Innovation, LLC, a wholly owned subsidiary that is part of the Acacia Technologies group, has entered into a license and settlement agreement with Koninklijke Philips Electronics, N.V. covering patents that apply to Audio/Video Enhancement and Synchronization, and Image Resolution Enhancement technologies. The agreement with Philips Electronics resolves a patent infringement lawsuit which was pending in the United States District Court for the Northern District of Illinois Eastern Division.

The Audio/Video Enhancement and Synchronization technologies generally relate to the use of a noise reduction filtering system for digital video compression, and for video and audio signals received by digital radios and video displays. Other aspects of the technologies apply to the synchronization of audio/video signals. The Image Resolution Enhancement Technology generally relates to the modification of a video or printed display to improve the perceived image quality beyond the basic pixel resolution of the display.

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 controls 45 patent portfolios, which include over 160 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, laptop docking station connectivity, microprocessor enhancement, multi-dimensional bar codes, network data storage, resource scheduling, rotational video imaging, spreadsheet automation, user activated Internet advertising and web conferencing & collaboration software.

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.

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.