Acacia Research Corporation is a U.S.-based company that is engaged in the patent licensing and enforcement business. The company’s revenue is generated from granting intellectual property rights of patented technologies that are controlled or owned by the company’s operating subsidiaries. In the meanwhile, the company’s operating subsidiaries help patent owners to prosecute and develop their patent portfolios, protect patents from unlicensed use, generate licensing revenue from patent users, and enforce against unauthorized patent users.