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 precludes a party from re-litigating an issue raised and decided against that party or a party in privity in a prior action. Determinations of quasi-judicial ...

When litigating with a party likely to be involved in frequent litigation, it is important to keep in mind the potential use of what is known as collateral estoppel, or issue preclusion. Collateral ...

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 ...

Jim Brogan, Brian Eutermoser and Janna Fischer discuss the ways that the unsuccessful IPR petitioner at the Patent Trial and Appeal Board still can challenge validity in subsequent district court ...