Back in June 2021, the Supreme Court issued its decision in U.S. v. Arthrex, Inc., Nos. 19-1434, 19-1452, 1901458 (June 21, 2021) (slip opinion). In the decision authored by Chief Justice Roberts, the Court ruled that the statutory scheme appointing Patent Trial and Appeal Board (PTAB or Board) administrative patent judges (APJs) to adjudicate IPRs violates the appointments clause of the U.S. Constitution. Specifically, the Court concluded that, because APJ decisions in IPR proceedings are not reviewable by a presidentially appointed and Senate-confirmed officer, such determinations are not compatible with the powers of inferior officers.