Opinion · Supreme Court of the United States

McClain v. Ortmayer

McClain v. Ortmayer, 141 U.S. 419 (1891)

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1891-11-02
Topic
general

How later courts describe this case

  • emphasizing that “it is a ‘bedrock principle’ of patent law that ‘the claims of a patent define the invention to which the patentee is entitled’” [citation omitted]
  • “the patentee is [not] at liberty to say that the spring encircling the after wale is immaterial and useless”
  • “The claim is the measure of his right to relief, and while the specification may be referred to to limit the claim, it can never be made available to expand it.”
  • "`The rights of the plaintiff depend upon the claim in his patent, according to its proper construction.'" (quoting Masury v. Anderson, 16 F. Cas. 1087, 1088 (C.C.S.D.N.Y.1873))
  • "The object of the patent law in requiring the patentee [to distinctly claim his invention] is not only to secure to him all to which he is entitled, but to apprise the public of what is still open to them."
  • “The claim is the measure of [that patentee’s] right to relief, and while the specification may be referred to to limit the claim, it can never be made available to expand it.”
  • no issue of equivalency; at issue were literal infringement and novelty
  • “The claim is the measure of [that patentee's] right to relief, and while the specifica3on may be referred to, to limit the claim, it can never be made available to expand it.”

Citator

UpLaw has not yet analyzed McClain v. Ortmayer. The absence of a flag is not a finding that it is good law.

Cited by
432 opinions

Headnotes

  1. Patent Law — Claims and Scope A patentee who describes and claims only a part of his invention is presumed to have abandoned the residue to the public; and while a claim fairly susceptible of two constructions will be read to preserve the patentee's actual invention, nothing can be held an infringement that does not fall within the terms the patentee has chosen to express his invention where the specification and claim clearly show what he desired to secure as a monopoly. 141 U.S. 419 (1891) (syllabus)
  2. Patent Law — Claim Construction The claim is the measure of the patentee's right to relief; the specification may be referred to in order to limit the claim, but it can never be made available to expand it, and where the patentee has claimed more than is necessary to the successful working of his device, he may not abandon a part of that which he asserted constituted the novelty of his invention. 141 U.S. 419 (1891) (opinion)
  3. Patent Law — Anticipation Whether a variation from a previous state of the art involves anything more than ordinary mechanical skill is a question that cannot be answered by applying the test of any general definition; a mere severance of a double spring into a single spring does not involve invention, at least in the absence of conclusive evidence that the single spring performs some new and important function not performed by it in the prior patent. 141 U.S. 419 (1891) (opinion)
  4. Patent Law — Utility and General Use as Evidence The utility of a device is not conclusively proven by the extent to which it has gone into general use; the benefit of the patent laws is limited by statute to things which are new as well as useful, and in a doubtful case the fact that a patented article has gone into general use is evidence of its utility, but it is not conclusive of utility and still less of patentable novelty. 141 U.S. 419 (1891) (opinion)
  5. Patent Law — Validity Letters patent No. 267,011, issued to McClain for a pad fastening, are void for want of novelty in the alleged invention. 141 U.S. 419 (1891) (syllabus)