Res Judicata and Collateral Estoppel in Matrimonial Actions

This article explains that res judicata and collateral estoppel prevent re-litigating final, decided issues in family and ...
JD Supra

Supreme Court Grants Assignor Estoppel a Reprieve but Limits its Scope

The Supreme Court of the United States upheld the validity of doctrine of assignor estoppel but concluded that the US Court of Appeals for the Federal Circuit failed to recognize the boundaries of the ...
Reuters

Federal Circuit clarifies scope of IPR estoppel and resolves district court split in patent law

July 10, 2025 - Patent Trial and Appeal Board (PTAB) post-grant validity challenges — for example, inter partes review — are frequent components of a patent litigation strategy for defendants.
IPWatchdog

Federal Circuit says Assignor Estoppel Has “No Place” in IPR Proceedings

The Federal Circuit recently found that assignor estoppel has “no place in IPR proceedings,” affirming a holding of the Patent Trials and Appeal Board (“Board”) that assignor estoppel did not bar ...