Mentor Graphics Corporation and Meta Systems, Inc. v. Quickturn Design Systems, Inc.

How courts have described this case

Verbatim parenthetical descriptions written by other courts when citing this decision. Ranked by citation-network relevance.

• describing the doctrine of assignor estoppel and explaining that the doctrine “also prevents parties in privity with an estopped assignor from challenging the validity of the patent”
• affirming grant of a pre- liminary injunction where the assignee showed a likelihood of success on validity based on the district court’s grant of summary judgment that the original assignor and its wholly owned subsidiary were barred from challenging va- lidity
• “Assignor estoppel prevents a party who assigns a patent to another from later challenging the validity of the assigned patent.”
• “Assignor estoppel prevents a party who assigns a patent to another from later challenging the validity of the assigned patent.”
• cit- ing A.C. Aukerman Co. v. R.L. Chaides Const. Co., 960 F.2d 1020, 1039 (Fed. Cir. 1992), abrogated on other grounds by SCA Hygiene Prod. Aktiebolag v. First Quality Baby Prod., LLC, 137 S. Ct. 954 (2017)

Source: CourtListener parenthetical corpus (CC0).