Legal Opinion
Mentor Graphics Corporation and Meta Systems, Inc. v. Quickturn Design Systems, Inc.
Court of Appeals for the Federal Circuit
Decided September 28, 1998No. 97-1564PublishedCited by 52 opinions
1Opinion of the Court
RADER, Circuit Judge.
Mentor Graphics Corp. (Mentor) and Meta Systems, Inc. (Meta) sued Quiekturn Design Systems, Inc. (Quiekturn) for a declaratory judgment of invalidity and non-infringement of U.S. Patent No. 5,036,473 (the ’473 patent). In a counterclaim, Quiekturn alleged infringement. The United States District Court for the District of Oregon preliminarily enjoined Mentor and Meta from infringing the ’473 patent. Because the doctrine of assignor estoppel barred both Mentor and Meta from challenging the validity of the ’473 patent, this court affirms.
I
Quiekturn, Mentor, and Meta…
2Cases cited11 opinions
- Blonder-Tongue Laboratories, Inc. v. University of Illinois FoundationSupreme Court of the United States · 1971
- A.C. Aukerman Company v. R.L. Chaides Construction Co.Court of Appeals for the Federal Circuit · 1992
- Lear, Inc. v. AdkinsSupreme Court of the United States · 1969
- Hybritech Incorporated v. Abbott LaboratoriesCourt of Appeals for the Federal Circuit · 1988
- Carroll Touch, Inc. v. Electro Mechanical Systems, Inc., Defendant/cross-AppellantCourt of Appeals for the Federal Circuit · 1993
6 more not listed; retrieve them via the Exa API.
3Cited by52 opinions
- Tate Access Floors, Inc. And Tate Access Floors Leasing, Inc. v. Interface Architectural Resources, Inc.Court of Appeals for the Federal Circuit · 2002
- Abbott Laboratories v. Sandoz, Inc.Court of Appeals for the Federal Circuit · 2008
- Sri Int'l, Inc. v. Cisco Sys., Inc.Court of Appeals for the Federal Circuit · 2019
- In Re Wellbutrin XL Antitrust Litigation Indirect Purchaser ClassCourt of Appeals for the Third Circuit · 2017
- Bayer Cropscience Ag v. Dow Agrosciences LLCCourt of Appeals for the Federal Circuit · 2017
47 more not listed; retrieve them via the Exa API.