MENLO PARK, Calif.--(BUSINESS WIRE)--Depomed, Inc. (Nasdaq:DEPO) today announced that it has filed a lawsuit in the United States District Court for the Northern District of California against Lupin Limited and its wholly-owned subsidiary, Lupin Pharmaceuticals, Inc., for infringement of the patents listed in the Orange Book for GLUMETZA® (metformin hydrochloride extended release tablets).
