Holding that a claim construction that excludes the preferred embodiment is "rarely, if ever, correct and would require highly persuasive evidentiary support"
Holding an inventor may define specific terms used to describe invention, but must do so "with reasonable clarity, deliberateness, and precision" and, if done, must "'set out his uncommon definition in some manner within the patent disclosure' so as to give one of ordinary skill in the art notice of the change" in meaning
Holding that a broad claim requiring selecting a backing board having a length at least as long as six shingles is not supported by a specification contemplating only backing boards the length of eight or sixteen shingles
35 U.S.C. § 112 Cited 7,362 times 1046 Legal Analyses
Requiring patent applications to include a "specification" that provides, among other information, a written description of the invention and of the manner and process of making and using it
35 U.S.C. § 103 Cited 6,130 times 479 Legal Analyses
Holding the party seeking invalidity must prove "the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains."