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 ...

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 ...

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 ...