Summary

Joseph P. Bradley Peck v. Collins — Opinion of the Court

That is extinguished. And, although for the purpose of fixing a date to the title in a question of priority, and of limiting the period for which the patent is to run, the date of the original patent is important; no damages can be recovered for any acts of infringement committed prior to the reissue.
It seems to us equally clear, that as the law stood when that decision was made, and as it continued to stand in 1866, when the surrender of Mudge's patent took place, a patent surrendered for reissue was cancelled in law as well when the application was rejected as when it was granted.
Source: Wikisource

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