WASHINGTON, D.C. - The U.S. Supreme Court denied certiorari May 29 in a case that posed the question of whether validity findings by the U.S. Patent and Trademark Office (PTO) are impermissibly nullified by juries that find infringement under the doctrine of equivalents (Saint-Gobain Ceramics and Plastics Inc. v. Siemens Medical Solutions USA Inc., No. 11-301, U.S. Sup.). View prior history, 2011 U.S. App. LEXIS 3546.