The Federal Circuit in Apple Inc. v. Qualcomm Incorporated handed down a decision on April 7, 2021 that provides guidance on the determination of standing for patent licensees who wish to contest the validity of a patent or patents in a licensed portfolio. The decision also provides further guidance to petitioners seeking appellate review after an unsuccessful validity challenge before the Patent Trial and Appeal Board (PTAB). More specifically, the recent decision by the Federal Circuit reaffirms the requirement that a patent licensee show a specific ascertainable injury in fact associated with the challenged patent in order to have standing to raise a validity challenge in an