Holding: In Immunex Corp. v. Sandoz Inc., No. 2020-1037 (Fed. Cir. July 1, 2020) (O’MALLEY, Chen, Reyna) (Reyna, dissenting), the Federal Circuit affirmed 2-1 the district court’s finding that the asserted patents, to which infringement had been stipulated, were not invalid for obviousness-type double patenting (“OTDP”), lack of written description support, or obviousness.1 Judge Reyna dissented and would have held the patents invalid for obviousness-type double patenting. Of particular interest is the OTDP aspect of the Court’s decision, which we will focus on here.