Joinder Estoppel Revisited
A few weeks back, the federal Circuit handed down a decision in Uniloc 2017 LLC v. Facebook Inc, capping off a complicated procedural history. In its decision, the Court sorted out the estoppel impact of IPRs finishing a few months earlier than others, and what that meant for parties common to these IPRs.
Left unanalyzed, however, was whether or not the PTAB’s initial finding of estoppel was appropriate in the first instance given the peculiar manner by which parties are joined to PTAB proceedings via copy-cat petitions.
Continue Reading Evolution of PTAB Joinder Estoppel