Acacia Subsidiary Enters into Settlement Agreement with Etron Technology America, Inc.

NEWPORT BEACH, Calif.-- December 31, 2010 --Acacia Research Corporation (Nasdaq:ACTG) announced today that its subsidiary, DRAM Technologies LLC, has entered into a settlement agreement with Etron Technology America, Inc. and Etron Technology, Inc. covering patents relating to certain DRAM memory chips.

ABOUT ACACIA RESEARCH CORPORATION

Acacia Research’s subsidiaries partner with inventors and patent owners, license the patents to corporate users, and share the revenue. Acacia Research’s subsidiaries control over 160 patent portfolios, covering technologies used in a wide variety of industries.

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