(February 16, 2017, 9:17 AM EST) -- WASHINGTON, D.C. — In response to a petition asking for a U.S. Supreme Court decision on whether inter partes review (IPR) violates the U.S. Constitution, an oilfield services company argues in a Jan. 30 opposition brief that the Federal Circuit U.S. Court of Appeals “has repeatedly and correctly rejected the argument that the Constitution prohibits the Patent and Trademark Office (PTO) from correcting its own error in issuing a patent that fails the statutory requirements” (Oil States Energy Services LLC v. Greene’s Energy Group LLC, No. 16-712, U.S. Sup.)....