Legal Opinion

Mahaffy and Harder Engineering Company v. Standard Packaging Corporation

Court of Appeals for the Fourth Circuit

Decided January 29, 1968No. 11377PublishedCited by 2 opinions

1Opinion of the Court

ALBERT V. BRYAN, Circuit Judge:

Patent No. 3,125,839, to be designated as 839, covering an element of a vacuum packaging apparatus and issued to Reid A. Mahaffy and John R. Harder on March 24, 1964, upon an application filed May 3, 1962, was declared invalid by the District Judge for obviousness, lack of invention and overclaiming. Since we agree that the patented device was obvious and so lacked invention, we affirm.

The patentees’ exclusive licensee, appellant Mahaffy & Harder Engineering Company, a New Jersey corporation engaged in designing and making machinery, brought an infringement suit…

2Cases cited4 opinions

  1. Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
  2. Willis v. TownCourt of Appeals for the Eighth Circuit · 1950
  3. Clark Noe v. W. D. SmithCourt of Appeals for the Fifth Circuit · 1962
  4. Mahaffy & Harder Engineering Co. v. Standard Packaging Corp.District Court, E.D. Virginia · 1966

3Cited by2 opinions

  1. Manuel Moreno v. Carol BosholmCourt of Appeals for the Fourth Circuit · 2025
  2. Manuel Moreno v. Carol BosholmCourt of Appeals for the Fourth Circuit · 2025

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