Acacia Research Corporation, together with its subsidiaries, invests in intellectual property and related absolute return assets; and engages in the licensing and enforcement of patented technologies. It assists patent owners with the prosecution and development of their patent portfolios; protection of their patented inventions from unauthorized use; generation of licensing revenue from users of their patented technologies; and enforcement against unauthorized users of their patented technologies through the filing of patent infringement litigation. The company owns or controls the rights to various patent portfolios, which include U.S. patents and foreign counterparts covering technologies used in a range of industries. It has executed approximately 1,570 license agreements, and approximately 200 patent portfolio licensing and enforcement programs. Acacia Research Corporation was founded in 1993 and is headquartered in Irvine, California.