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 ...

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 ...