SAIC/EAI to Initiate Government Funded Influenza Screening

Program with CombiMatrix Technology 
BIOWIRE2K
NEWPORT BEACH, Calif.--(BUSINESS WIRE)--May 17, 2006
Acacia Research Corporation (Nasdaq:CBMX)(Nasdaq:ACTG)
announced today that its CombiMatrix group will collaborate with EAI
Corporation, a subsidiary of Science Applications International
Corporation (SAIC), for field deployment of CombiMatrix's
influenza-screening technology for the identification of all versions
of influenza A, including the highly pathogenic Eurasian (H5:N1)
strain. 
Funding for this program will be provided by the Center for
Innovative Technology/Institute for Defense and Homeland Security
through its Partnership Intermediary Agreement with the Department of
Defense. Additional partners in this project include the San Francisco
Bay Estuary Field Station of the US Geological Survey/Western
Ecological Research Center and the Prince William Sound Science Center
of Cordova, Alaska. 
"The US government continues to be justifiably concerned about the
entrance of highly pathogenic avian influenza into North America, and
CombiMatrix continues to demonstrate the power of its technology in
this realm," stated Dr. Amit Kumar, President and CEO of CombiMatrix.
"This collaboration with EAI gets our technology into the field and
into the hands of people and groups standing watch on US soil. This
program is in addition to our participation in the US Government's
National Early Detection System." 
"We are pleased that the Institute for Defense and Homeland
Security has agreed to fund this combined effort with CombiMatrix,"
said Dr. Joe Dudley, Chief Scientist at EAI. "We believe that the
CombiMatrix system is a powerful, versatile, and portable system for
influenza monitoring. We believe that this approach, combined with
EAI's mobile-laboratory products and expertise, will provide a very
powerful tool for monitoring and preparedness in the event of a
pandemic." 
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 43 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. 
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. 
ABOUT SAIC: 
SAIC is the largest employee-owned research and engineering
company in the United States, with more than 43,000 employees in over
150 cities worldwide. For the fiscal year ended January 31, 2006, the
company reported annual revenues of $7.8 billion. SAIC engineers and
scientists solve complex technical problems in national security,
homeland security, energy, the environment, space, telecommunications,
health care, and logistics. SAIC: FROM SCIENCE TO SOLUTIONS(TM).
Additional information about SAIC is available at www.saic.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. 
CONTACT:
Acacia Research Corporation
Bret L. Undem (Media Relations), 425-493-2293
Fax: 425-493-2010