Navigation Patent Strategy Tips from Fed. Circ. 'Kroy v. Groupon' Ruling on Collateral Estoppel
The U.S. Court of Appeals for the Federal Circuit recently addressed the usage of the doctrine of collateral estoppel in patent infringement cases. Specifically, the court considered whether a finding of invalidity of claims by the PTAB at an inter partes review could be used to estop a patent holder from asserting patent infringement of different claims of the same patent in district court litigation.
