HSINCHU, Taiwan--(BUSINESS WIRE)--Realtek Semiconductor Corporation, a global leader in integrated circuits, filed a federal U.S. lawsuit today in the Northern District of California against MediaTek Inc., Future Link Systems LLC, and Future Link's parent company IPValue Management. The complaint alleges that patent assertion entities (PAEs) Future Link and IPValue conspired with MediaTek and violated the federal Sherman Act and California's Unfair Competition Law by entering into an illicit "b