When thinking about estoppel and the PTAB, the § 315(e) estoppels—relating to grounds a petitioner raised or reasonably could have raised—are likely the first to come to mind. However, other types of ...

The doctrine of collateral estoppel can assist parties facing costly litigation. Robert Berezin and Carmen Bremer consider how it can be invoked in patent disputes Collateral estoppel can be used to ...

Collateral estoppel, or issue preclusion, the Court of Appeals found, "precludes a party from relitigating in a subsequent action or proceeding an issue clearly raised in a prior action or proceeding ...

In their Trial Practice column, Robert S. Kelner, Gail S. Kelner and Joshua D. Kelner of Kelner & Kelner, write that a careful reading of a recent Court of Appeals decision that unanimously recalled ...

The Supreme Court’s Friday ruling in Trump v. CASA may have clipped the wings of universal injunctions, but it left open — and almost surely elevated — the role of an obscure but fundamental doctrine ...