By Kevin E. Noonan — Last year, the Supreme Court declined an invitation to abrogate the doctrine of assignor estoppel by an assignor sued for patent infringement in Minerva Surgical v. Hologic. Nevertheless, the Court followed its proclivities and vacated the Federal Circuit’s opinion based on how the appellate court applied the doctrine and remanded. Last week, the Federal Circuit issued its opinion on remand, in Hologic Inc. v. Minerva Surgical, Inc., once again determining that Minerva is estopped under the doctrine from asserting claims in a patent assigned by its principals to Hologic. To recap, the case arose in…
