Can an affidavit or declaration under 37 CFR 1.131(a) be used to swear behind a U.S. patent or U.S. patent application publication?

An affidavit or declaration under 37 CFR 1.131(a) cannot be used to swear behind a U.S. patent or U.S. patent application publication that claims the rejected invention. The MPEP clearly states: ’37 CFR 1.131(a) is not available if the reference is a U.S. patent or U.S. patent application publication of a pending or patented application…

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What is the significance of 37 CFR 1.131(a) affidavits or declarations in establishing invention dates?

37 CFR 1.131(a) affidavits or declarations are important tools for establishing invention dates under pre-AIA law. The MPEP 715.07(c) states: “The 37 CFR 1.131(a) affidavit or declaration must contain an allegation that the acts relied upon to establish the date prior to the reference or activity were carried out in this country or in a…

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Can an inventor use a 37 CFR 1.131(a) affidavit to overcome a rejection based on a commonly owned patent or application?

No, an inventor cannot use a 37 CFR 1.131(a) affidavit to overcome a rejection based on a commonly owned patent or application. This is because such references are not considered prior art that can be antedated. According to MPEP 715.01(a): “Where the reference is a U.S. patent or patent application publication of a common assignee…

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