In last week’s 6-5 decision in SCA Hygiene Prod. v. First Quality Baby Prod., LLC, No. 2013-1564, 2015 WL 5474261 (Fed. Cir. Sept. 18, 2015), the US Court of Appeals for the Federal Circuit, sitting en banc, reaffirmed that laches remains a viable defense in patent infringement lawsuits. The decision was reached despite the relatively recent U.S. Supreme Court decision in Petrella v. Metro-Goldwyn-Mayer, Inc., 134 S.Ct. 1962 (2014), where the high court struck laches as an available copyright infringement defense. However, the Federal Circuit’s sharp divide on this issue suggests that further review by the U.S. Supreme Court may be on its way.