EXHIBIT 23.1

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of our report dated March 26, 2003 relating to the
financial statements of Acacia Research Corporation, which appears in Acacia
Research Corporation's Annual Report on Form 10-K for the year ended December
31, 2002. We also consent to the reference to us under the heading "Experts" in
such Registration Statement.

PRICEWATERHOUSECOOPERS LLP

Los Angeles, California
September 30, 2003