Legal Opinion
Glen R. Hadfield v. Ryan Equipment Company
Court of Appeals for the Eighth Circuit
Decided March 22, 1972No. 71-1126PublishedCited by 17 opinions
1Opinion of the Court
BRIGHT, Circuit Judge.
Glen R. Hadfield, the patentee and owner of United States Letters Patent No. 3,387,666 [hereinafter ’666 Patent], brought this suit for patent infringement against the Ryan Equipment Co., a manufacturer of sod harvesting equipment. The district court, Judge Nord-bye, in an unreported opinion, held the ’666 Patent invalid for obviousness, and therefore, did not reach the issue of infringement. 1
I
STANDARD OF REVIEW
The district court decision turned on the application of 35 U.S.C. § 103 2 to the device here in question. In Graham v. John Deere Co. of Kansas City, 383 U.S.…
2Cases cited13 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Morley Construction Co. v. Maryland Casualty Co.Supreme Court of the United States · 1937
- Ling-Temco-Vought, Inc. v. Kollsman Instrument CorporationCourt of Appeals for the Second Circuit · 1967
- Zephyr American Corporation v. Bates Mfg. Co.Court of Appeals for the Third Circuit · 1942
- Application of Hans Theodor BoeCourt of Customs and Patent Appeals · 1966
8 more not listed; retrieve them via the Exa API.
3Cited by17 opinions
- Marjorie Joseph v. Norman's Health Club, Inc., Barbara C. Morse v. Norman's Health Club, Inc.Court of Appeals for the Eighth Circuit · 1976
- Alford v. City of LubbockCourt of Appeals for the Fifth Circuit · 1982
- McGowan v. Ries (In Re McGowan)United States Bankruptcy Appellate Panel for the Eighth Circuit · 1998
- Blohm & Voss Ag v. Prudential-Grace Lines, Inc.Court of Appeals for the Fourth Circuit · 1973
- Janet R. Johnson, Trustee v. United States Fire Insurance Company, Milgo Industrial, Inc. v. United States Fire Insurance Company, and Janet R. Johnson, Trustee, Plaintiff-Appellant-AppelleeCourt of Appeals for the Eighth Circuit · 1978
12 more not listed; retrieve them via the Exa API.