Acacia Research Corporation is an American company based in Newport Beach, California, that works to license patents and perform relevant legal action such as dealing with patent infringement. Acacia is sometimes referred to as a non-practicing entity because the company derives revenue from licenses and lawsuits rather than from building products. According to the company, it has returned over $705,000,000 to patent owners. The corporation creates a subsidiary company for each set of patents it enforces. Currently, 95% of the companys business involves partnering with inventors and patent holders. It currently has 180 known subsidiaries and 257 active cases as of September 2014, four of which are not through a subsidiary.