When is a 37 CFR 1.131(a) affidavit appropriate in a patent application?
A 37 CFR 1.131(a) affidavit is appropriate when an applicant needs to antedate a reference cited against their patent application. Specifically, it’s used to show prior invention before the effective date of the cited reference. According to MPEP 715.01: “An affidavit or declaration under 37 CFR 1.131(a) may be used, in the context of a…
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