Acacia Research Corporation is a holding company. The Company, through its subsidiaries, is engaged in patent investment, prosecution, licensing and enforcement activities. The Company�s subsidiaries partner with inventors and patent owners for patented inventions. It is also involved in granting of intellectual property rights for the use of patented technologies. Its subsidiaries assist patent owners with the prosecution and development of their patent portfolios, the protection of their patented inventions from unauthorized use, the generation of licensing revenue from users of their patented technologies and with the enforcement against unauthorized users of their patented technologies through the filing of patent infringement litigation. The Company has executed approximately 1,345 license agreements.