0001019687-05-002272 S-8 5 20050816 20050816 20050816 ACACIA RESEARCH CORP 0000934549 3670 954405754 DE 1231 S-8 33 333-127583 051030589 500 NEWPORT CENTER DRIVE 7TH FLOOR NEWPORT BEACH CA 92660 9494808300 500 NEWPORT CENTER DRIVE # NEWPORT BEACH CA 92660 S-8 1 acacia_s8-081505.txt EX-5.1 2 acacia_s8ex5-1.txt OPINION OF GREENBERG TRAURIG, LLP EX-23.1 3 acacia_s8ex23-1.txt CONSENT REGARDING ACACIA RESEARCH CORPORATION EX-23.2 4 acacia_s8ex23-2.txt CONSENT REGARDING ACACIA TECHNOLOGIES GROUP EX-23.3 5 acacia_s8ex23-3.txt CONSENT REGARDING COMBIMATRIX GROUP