STEVENSON, Md.--(BUSINESS WIRE)--The securities litigation law firm of Brower Piven, A Professional Corporation, announces that a class action lawsuit has been commenced in the United States District Court for the Central District of California on behalf of purchasers of Ampio Pharmaceuticals, Inc. (“Ampio” or the “Company”) (NYSE:AMPE) common stock during the period between January 13, 2014 and August 21, 2014, inclusive (the “Class Period”). Investors who wish to become proactively involved i