Legal Opinion
Specialty Composites, Plaintiff/cross-Appellant v. Cabot Corp.
Court of Appeals for the Federal Circuit
Decided April 27, 1988No. 87-1456, 87-1457PublishedCited by 168 opinions
1Opinion of the Court
DAVIS, Circuit Judge.
Cabot Corporation’s (Cabot) United States Patent No. Re. 29,487 (’487 patent) claims certain plastic foam earplugs used for hearing protection. Specialty Composites (Specialty) brought an action in the United States District Court for the District of Massachusetts seeking a declaratory judgment that the ’487 patent is invalid, unenforceable, and not infringed by the polyurethane foam earplugs manufactured and sold by Specialty. Cabot counterclaimed for infringement. After a bench trial, the court ruled that Specialty had failed to establish that Cabot’s patent is invalid…
2Cases cited28 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Sri International v. Matsushita Electric Corporation of America and Matsushita Electric Industrial Co., Ltd.Court of Appeals for the Federal Circuit · 1985
- American Hoist & Derrick Company, Cross-Appellee v. Sowa & Sons, Inc., Cross-AppellantCourt of Appeals for the Federal Circuit · 1984
- United States v. AdamsSupreme Court of the United States · 1966
- Stratoflex, Inc. v. Aeroquip CorporationCourt of Appeals for the Federal Circuit · 1983
23 more not listed; retrieve them via the Exa API.
3Cited by168 opinions
- Herbert Markman and Positek, Inc. v. Westview Instruments, Inc. And Althon Enterprises, Inc.Court of Appeals for the Federal Circuit · 1995
- Renishaw Plc v. Marposs Societa' Per Azioni and Marposs CorporationCourt of Appeals for the Federal Circuit · 1998
- Texas Digital Systems, Inc. v. Telegenix, Inc.Court of Appeals for the Federal Circuit · 2002
- Johnson Worldwide Associates, Inc. v. Zebco Corporation and Brunswick CorporationCourt of Appeals for the Federal Circuit · 1999
- Smithkline Diagnostics, Inc. v. Helena Laboratories Corporation, Defendant/cross-AppellantCourt of Appeals for the Federal Circuit · 1989
163 more not listed; retrieve them via the Exa API.