The doctrine of equivalents (DOE), a creation of the Supreme Court in Graver Tank & Mfg. v. Linde Air Products (1950), is balanced by the concept of prosecution history estoppel (PHE), the contours of which were delineated...more
On July 23, 2019, the U.S. Court of Appeals for the Federal Circuit released its decision affirming summary judgment that the asserted design patents were not invalid for non-ornamentality under 35 U.S.C. § 171, and rejecting...more