Mr. Dinger has represented numerous clients in intellectual property and constitutional law matters, including Teva Pharmaceuticals USA, Walgreens, J. Baker, Norton Company, Codex Corporation, Walt Disney, MCA Records, Volkswagen AG, U.S. Conference of Catholic Bishops and Van Wagner Communications. Much of his practice in recent years has involved the representation of clients in appeals before the U.S. Court of Appeals for the Federal Circuit and other federal circuit courts. Among the cases that Mr. Dinger has successfully argued are:
- Teva Pharmaceuticals USA, Inc. v. Novartis Pharmaceuticals Corp., establishing new Federal Circuit rule governing subject matter jurisdiction over declaratory judgment actions
- Warner-Lambert Co. v. Teva Pharmaceuticals USA, Inc., reinstating non-enablement defense rejected on summary judgment
- Walgreen Co. v. Rullan, invalidating on commerce clause grounds statute requiring licensure for new retail pharmacies
- Stark v. Advanced Magnetics, Inc., reinstating claim for correction of inventorship on issued patent
- Volkswagenwerk AG v. Wheeler, restricting use of automobile manufacturer trademarks by independent service companies
- In litigation on behalf of a major consumer product manufacturer, invalidated on takings clause ground a statute requiring public disclosure of trade secret ingredients
Mr. Dinger has also represented clients as amici curiae before the U.S. Supreme Court and in various federal circuit courts.