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Ex parte Heckel et al.

07504679 (B.P.A.I. Feb. 24, 1999)
Ex parte Heckel et al.

2 Cited authorities

  1. Section 103 - Conditions for patentability; non-obvious subject matter

    35 U.S.C. § 103   Cited 6,172 times   492 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."

  2. Section 251 - Reissue of defective patents

    35 U.S.C. § 251   Cited 467 times   73 Legal Analyses
    Describing the reissue of defective patents