MedImmune, Inc., a licensee in good standing under a patent owned by Genentech, Inc. and City of Hope (collectively "Genentech"), seeks by declaratory action to challenge the validity and enforceability of the licensed patent on various grounds flowing from the settlement of a patent interference between Genentech and Celltech R&D, Ltd. The United States District Court for the Central District of California held that because MedImmune continues to comply fully with the license terms, leaving no possibility of infringement suit or license cancellation by Genentech, there is no "case of actual controversy" as required by the Declaratory Judgment Act, 28 U.S.C. §2201. The district court also dismissed MedImmune's antitrust and unfair competition counts. We affirm the judgment.