Warner-Jenkinson Company, Inc. v. Hilton Davis Chemical Co.

Case Date: 11/04/1997

Warner-Jenkinson Company, Inc. v. Hilton Davis Chemical Co., 520 U.S. 17 (1997)[1], was a United States Supreme Court decision in the area of patent law, affirming the continued vitality of the doctrine of equivalents while making some important refinements to the doctrine.