0000898430-00-002260 S-3 4 20000807 ACACIA RESEARCH CORP 0000934549 6282 954405754 DE 1231 S-3 33 333-43222 687664 55 SOUTH LAKE AVE STE B PASADENA CA 91101 6264496431 12 S RAYMOND AVENUE SUITE B PASADENA CA 91105 S-3 1 0001.txt FORM S-3 EX-4.1 2 0002.txt FORM OF COMMON STOCK WARRANT AGREEMENT EX-5.1 3 0003.txt OPINION OF COUNSEL RE: LEGALITY OF SECURITIES EX-23.1 4 0004.txt CONSENT OF INDEPENDENT ACCOUNTANTS