LEGGETT V. AVERY, 101 U. S. 256 (1879)
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U.S. Supreme Court
Leggett v. Avery, 101 U.S. 256 (1879)
Leggett v. Avery
101 U.S. 256
Syllabus
1. Where, on the surrender of letters patent, a disclaimer of a part of the inventions described in them is filed by the patentee in the Patent Office, and reissued letters are granted for the remainder, held that if in a second reissue the disclaimed inventions are embraced, he cannot sustain a bill to enjoin the infringement of them.
2. Quaere, are reissued letters patent valid if they contain anything which the patentee disclaimed, or in the rejection of which he acquiesced, in order to obtain the original letters?
The facts are sufficiently stated in the opinion of the Court.