Legal Opinion
American Hoist & Derrick Company, Cross-Appellee v. Sowa & Sons, Inc., Cross-Appellant
Court of Appeals for the Federal Circuit
Decided January 12, 1984No. 19-1201PublishedCited by 548 opinions
1Opinion of the Court
RICH, Circuit Judge.
American Hoist and Derrick Co. (Am-Hoist) appeals from the unpublished decision of the United States District Court for the District of Oregon holding for Sowa & Sons, Inc. (Sowa) on AmHoist’s suit for infringement of claims 3, 5, and 7 of its Shahan U.S. Patent No. 4,079,584, issued March 21, 1978, for a “Heavy Duty Shackle.” After a two and one-half day jury trial, the jury rendered a verdict for defendant by answering written interrogatories as to two legal issues, stating that each claim in suit was invalid for obviousness and for fraud in the prosecution of those…
2Cases cited38 opinions
- United States v. Aluminum Co. of AmericaCourt of Appeals for the Second Circuit · 1945
- Walker Process Equipment, Inc. v. Food MacHinery & Chemical Corp.Supreme Court of the United States · 1965
- Stratoflex, Inc. v. Aeroquip CorporationCourt of Appeals for the Federal Circuit · 1983
- South Corporation and Seal Fleet, Inc. v. The United StatesCourt of Appeals for the Federal Circuit · 1982
- Morgan v. DanielsSupreme Court of the United States · 1894
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3Cited by548 opinions
- Herbert Markman and Positek, Inc. v. Westview Instruments, Inc. And Althon Enterprises, Inc.Court of Appeals for the Federal Circuit · 1995
- Microsoft Corp. v. i4i Ltd. PartnershipSupreme Court of the United States · 2011
- Hybritech Incorporated v. Monoclonal Antibodies, Inc.Court of Appeals for the Federal Circuit · 1986
- Therasense, Inc. v. Becton, Dickinson and Co.Court of Appeals for the Federal Circuit · 2011
- Exergen Corp. v. Wal-Mart Stores, Inc.Court of Appeals for the Federal Circuit · 2009
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