Acacia Subsidiary Enters into Settlement Agreement for Rule Based Monitoring Technology with F-Secure

Business Wire, March 27, 2008

NEWPORT BEACH, Calif. -- Headline of release dated March 26, 2008 should read: Acacia Subsidiary Enters into Settlement Agreement for Rule Based Monitoring Technology with F-Secure (sted Acacia Technologies Licenses Rule Based Monitoring Technology to F-Secure).

Also first graph should read: Acacia Research Corporation (Nasdaq:ACTG) announced today that its Diagnostic Systems Corporation subsidiary has entered into a settlement agreement with F-Secure, Inc. covering a portfolio of patents that apply to rule-based monitoring (sted license agreement with F-Secure, Inc.).

The corrected release reads:

ACACIA SUBSIDIARY ENTERS INTO SETTLEMENT AGREEMENT FOR RULE BASED MONITORING TECHNOLOGY WITH F-SECURE

Acacia Research Corporation (Nasdaq:ACTG) announced today that its Diagnostic Systems Corporation subsidiary has entered into a settlement agreement with F-Secure, Inc. covering a portfolio of patents that apply to rule-based monitoring.

This resolves a dispute that was pending in the District Court for the Central District of California.

ABOUT ACACIA RESEARCH CORPORATION

Acacia Research's subsidiaries develop, acquire, and license patented technologies. Acacia Research's subsidiaries control 90 patent portfolios, which include U.S. patents and certain foreign counterparts, covering technologies used in a wide variety of industries.

Information about Acacia Research is available at www.acaciatechnologies.com and www.acaciaresearch.com.

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