Legal Opinion

E.I. Du Pont De Nemours & Co. v. Unifrax I LLC

Court of Appeals for the Federal Circuit

Decided April 17, 2019No. 2017-2575PublishedCited by 35 opinions

1Opinion of the Court

Dissenting opinion filed by Circuit Judge O'Malley.

Reyna, Circuit Judge.

*1064 This appeal arises from a patent infringement suit filed in the U.S. District Court for the District of Delaware. Defendant-Appellant Unifrax I LLC appeals from the district court's claim construction and denial of its motions for judgment of non-infringement and invalidity as a matter of law after a jury found that Unifrax I LLC's flame barrier product infringed the asserted patent and that Unifrax I LLC failed to prove the asserted patent was invalid. Because the district court correctly construed "100% by weight" and…

Also in this document: Dissent.

2Cases cited42 opinions

  1. MARKMAN Et Al. v. WESTVIEW INSTRUMENTS, INC., Et Al.Supreme Court of the United States · 1996
  2. Edward H. Phillips v. Awh Corporation, Hopeman Brothers, Inc., and Lofton Corporation, Defendants-CrossCourt of Appeals for the Federal Circuit · 2006
  3. Vitronics Corporation v. Conceptronic, Inc.Court of Appeals for the Federal Circuit · 1996
  4. Lightning Lube, Inc. v. Witco Corp.Court of Appeals for the Third Circuit · 1993
  5. 02 Micro International Ltd. v. Beyond Innovation Technology Co.Court of Appeals for the Federal Circuit · 2008

37 more not listed; retrieve them via the Exa API.

3Cited by35 opinions

  1. Iridescent Networks, Inc. v. At&t Mobility, LLCCourt of Appeals for the Federal Circuit · 2019
  2. Medtronic, Inc. v. Teleflex Innovations S.A.R.L.Court of Appeals for the Federal Circuit · 2023
  3. Abbott Laboratories v. Grifols Diagnostic Solutions Inc.District Court, N.D. Illinois · 2022
  4. Allergan, Inc. v. Revance Therapeutics, Inc.District Court, D. Delaware · 2025
  5. Azurity Pharmaceuticals, Inc. v. Alkem Laboratories Ltd.District Court, D. Delaware · 2023

30 more not listed; retrieve them via the Exa API.

Showing a preview — retrieve the full document via the Exa API.

Powered by the Exa API