Opinion · Supreme Court of the United States

Jungersen v. Ostby & Barton Co.

Jungersen v. Ostby & Barton Co., 335 U.S. 560 (1949)

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1949-01-03
Topic
general

How later courts describe this case

  • patent invalid despite “considerable commercial success”

Citator

UpLaw has not yet analyzed Jungersen v. Ostby & Barton Co.. The absence of a flag is not a finding that it is good law.

Authority status
pending
Cited by
167 opinions

Headnotes

  1. Patent Law — Validity Where every step of a claimed method was anticipated in the prior art and the patentee's combination of those steps was, in its essential features, also well known in the art, the claims are invalid for want of invention. 335 U.S. at 563-564
  2. Patent Law — Invention — Prior Art Where the use of centrifugal force was common in the art as a means of introducing molten metal into a secondary mould, applying centrifugal force in an intermediate step to force molten wax into a primary mould, in conjunction with the old "lost wax" process, does not rise to the inventive genius required to render a patent valid. 335 U.S. at 564-567
  3. Patent Law — Prior Art — Scope of Analogous Art A patentee may not avoid prior art on the theory that his field is a separate and distinct art where the patent is not restricted to that field, and the prior improvements in the art of casting were so obviously applicable to the casting the patentee sought to effect that he was bound by knowledge of them. 335 U.S. at 567
  4. Patent Law — Commercial Success Where invention is plainly lacking, the fact that a process has enjoyed considerable commercial success does not render a patent on it valid; commercial success is merely a makeweight, to be given weight in tipping the scales toward patentability only where the question of patentable invention is a close one. 335 U.S. at 567-568