Legal Opinion

eSpeed, Inc. v. Brokertec USA, L.L.C.

Court of Appeals for the Federal Circuit

Decided March 20, 2007No. 2006-1385PublishedCited by 22 opinions

1Opinion of the Court

MOORE, Circuit Judge.

Plaintiffs-appellants eSpeed, Inc., Cantor Fitzgerald, L.P., CFPH, L.L.C. and eSpeed Government Securities, Inc. (collectively Cantor) appeal from the district court’s final judgment declaring claims 20-23 of United States Patent No. 6,560,580 (the '580 patent) invalid, declaring the '580 patent unenforceable, and entering final judgment in favor of defendants. Because we affirm the district court’s conclusion that the '580 patent is unenforceable due to inequitable conduct, we need not decide the other issues raised by Cantor.

I. BACKGROUND

A Technological Background

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2Cases cited16 opinions

Kingsdown Medical Consultants, Ltd. And E.R. Squibb & Sons, Inc. v. Hollister IncorporatedCourt of Appeals for the Federal Circuit · 1988
Molins Plc, and John Coventry Smith, Jr. v. Textron, Inc., Kearney & Trecker Corporation, and Avco CorporationCourt of Appeals for the Federal Circuit · 1995
Paragon Podiatry Laboratory, Inc. v. Klm Laboratories, Inc.Court of Appeals for the Federal Circuit · 1993
Digital Control v. The Charles MacHine Works (Also Known as Ditchwitch)Court of Appeals for the Federal Circuit · 2006
Critikon, Inc., Plaintiff-Cross v. Becton Dickinson Vascular Access, Inc.Court of Appeals for the Federal Circuit · 1997

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

3Cited by22 opinions

Innogenetics, N v. v. Abbott LaboratoriesCourt of Appeals for the Federal Circuit · 2008
Symantec Corp. v. Computer Associates International, Inc.Court of Appeals for the Federal Circuit · 2008
American Calcar, Inc. v. American Honda Motor Co., Inc.Court of Appeals for the Federal Circuit · 2011
Monsanto Co. v. Bayer Bioscience N.V.Court of Appeals for the Federal Circuit · 2008
Hynix Semiconductor Inc. v. Rambus, Inc.District Court, N.D. California · 2007

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