2018 was a watershed year for post-grant practice. The Supreme Court of the United States and the Court of Appeals for the Federal Circuit issued several important decisions touching on a variety of topics, including the constitutionality of inter partes review (IPR) proceedings under Article III, real party in interest (RPI) and privity issues, partial institution decisions, and printed publications. The Supreme Court of the United States and the Court of Appeals for the Federal Circuit issued several important decisions touching on a variety of topics, including the constitutionality of inter partes review (IPR) proceedings under Article III, real party in interest (RPI) and privity issues, partial institution decisions, and printed publications. The Supreme Court of the United States and the Court of Appeals for the Federal Circuit issued several important decisions touching on a variety of topics, including the constitutionality of inter partes review (IPR) proceedings under Article III, real party in interest (RPI) and privity issues, partial institution decisions, and printed publications.