Legal Opinion
Feit Electric Company, Inc. v. CFL Technologies LLC
District Court, N.D. Illinois
Decided August 25, 2025No. 1:13-cv-09339Unknown
1Opinion
OTHE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION FEIT ELECTRIC CO., INC., ) ) Plaintiff, ) No. 13 09339 v. ) ) Chief Judge Virginia M. Kendall CFL TECHNOLOGIES, LLC, ) ) Defendant. ) MEMORANDUM OPINION & ORDER In 2013, Plaintiff Feit Electric Company, Inc. (“Feit Electric”) filed a declaratory action against Defendant CFL Technologies, LLC’s (“CFLT”) predecessor alleging that U.S. Patent Nos. 6,172,464 (“the ‘464 Patent”) and 5,757,140 (“the ‘140 Patent”) (collectively, the “Patents-in- Suit”) are unenforceable. The Court held a claim construction…
2Cases cited25 opinions
- Edward H. Phillips v. Awh Corporation, Hopeman Brothers, Inc., and Lofton Corporation, Defendants-CrossCourt of Appeals for the Federal Circuit · 2006
- Herbert Markman and Positek, Inc. v. Westview Instruments, Inc. And Althon Enterprises, Inc.Court of Appeals for the Federal Circuit · 1995
- Vitronics Corporation v. Conceptronic, Inc.Court of Appeals for the Federal Circuit · 1996
- Nautilus, Inc. v. Biosig Instruments, Inc.Supreme Court of the United States · 2014
- Teleflex, Inc. v. Ficosa North America Corp., Fico Cables, S.A., and Ficosa North America S.A. De C.V.Court of Appeals for the Federal Circuit · 2002
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