Legal Opinion
Desper Products, Inc. And Spatializer Audio Laboratories, Inc. v. Qsound Labs, Inc.
Court of Appeals for the Federal Circuit
Decided September 18, 1998No. 97-1163PublishedCited by 93 opinions
1Opinion of the Court
PLAGER, Circuit Judge.
Desper Products, Inc. and Spatializer Audio Laboratories, Inc. (collectively “Desper”) sued QSound Labs, Inc. (“QSound”), owner of U.S. Patent Nos. 5,105,462 (the ’462 patent) and 5,208,860 (the ’860 patent), in the United States District Court for the Central District of California (No. CV 94-7276). Desper sought a declaratory judgment that Desper’s “Spatializer” product does not infringe either patent and that the patents are invalid. QSound counterclaimed for patent infringement. The district court entered summary judgment for Desper, and QSound appeals. Because the…
2Cases cited18 opinions
- MARKMAN Et Al. v. WESTVIEW INSTRUMENTS, INC., Et Al.Supreme Court of the United States · 1996
- 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
- Cybor Corporation v. Fas Technologies, Inc., and Fastar Ltd., Defendants-CrossCourt of Appeals for the Federal Circuit · 1998
- Southwall Technologies, Inc. v. Cardinal Ig CompanyCourt of Appeals for the Federal Circuit · 1995
13 more not listed; retrieve them via the Exa API.
3Cited by93 opinions
- Alloc, Inc. v. International Trade CommissionCourt of Appeals for the Federal Circuit · 2003
- Springs Window Fashions Lp, Shade-O-Matic Ltd., and Manor Tec, Inc. v. Novo Industries, L.P., Defendant-Cross-AppellantCourt of Appeals for the Federal Circuit · 2003
- Astra Aktiebolag v. Andrx Pharmaceuticals, Inc.District Court, S.D. New York · 2002
- Elbex Video, Ltd. v. Sensormatic Electronics Corp.Court of Appeals for the Federal Circuit · 2007
- Solaia Technology LLC v. ArvinMeritor, Inc.District Court, N.D. Illinois · 2005
88 more not listed; retrieve them via the Exa API.