What is the difference between ‘on sale’ and ‘public use’ in patent law?
While both ‘on sale’ and ‘public use’ are forms of prior art in patent law, they have distinct characteristics. According to MPEP 2152.02(d) and related sections: On Sale: Refers to commercial activities involving the invention, such as offers for sale or actual sales. It doesn’t necessarily require the invention to be publicly visible or used.…
Read MoreCan a 37 CFR 1.131(a) affidavit be used to overcome all types of prior art references?
No, a 37 CFR 1.131(a) affidavit cannot be used to overcome all types of prior art references. The MPEP 715 outlines specific limitations on the use of these affidavits: U.S. Patents and Applications: Cannot be used against U.S. patents or published applications naming another inventor with an earlier effective filing date. Statutory Bars: Cannot overcome…
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