NEWPORT BEACH, Calif.--(BUSINESS WIRE)--May 18, 2006--Acacia Research Corporation (Nasdaq:CBMX - News; Nasdaq:ACTG - News) announced today that its CombiMatrix group has begun offering its Human 90K(TM) CatalogArray. Powered by the Company's proprietary CustomArray(TM) Platform, the new Human 90K CatalogArray can interrogate 39,882 RNA transcripts, offering researchers the most up-to-date human array.