Petitioners In 3 Patent Cases Seek Supreme Court Guidance On Tangential Exception

Mealey's (June 4, 2020, 11:57 AM EDT) -- WASHINGTON, D.C. — The petitioner in one of three related cases presently before the U.S. Supreme Court in petitions for certiorari related to the tangential exception to prosecution history estoppel and the doctrine of equivalents (DOE) filed a reply brief June 1, asserting that the Federal Circuit U.S. Court of Appeals’ rulings in the cases “undermine the public notice function of a patent’s prosecution history” (Hospira Inc. v. Eli Lilly and Company, No. 19-1058, U.S. Sup.; Dr. Reddy’s Laboratories Ltd., et al. v. Eli Lilly and Company, No. 19-1061, U.S. Sup.; and CJ CheilJedang Corp., et al. v. International Trade Commission, et al., No. 19-1062, U.S. Sup.)....