UPDATE 2-Maxygen says drug under Amgen patent cloud; shares sink - Reuters

UPDATE 2-Maxygen says drug under Amgen patent cloud; shares sink Reuters - 16 hours ago O: Quote, Profile, Research, Stock Buzz) slid as much as 30 percent after news that it could face a legal patent battle with sector leader Amgen Inc (AMGN. ... Maxygen warns of possible patent infringement suit from Amgen MarketWatch Amgen May Sue Over Blood Cell Drug Los Angeles Business Journal (subscription) all 31 news articles