What are the limitations of using 35 U.S.C. 21(a) for filing date petitions?
The provisions of 35 U.S.C. 21(a) and 37 CFR 1.10(g) to (i) have specific limitations when it comes to petitions for filing dates. According to MPEP 511: “Applicants are cautioned that the provisions of 35 U.S.C. 21(a) and 37 CFR 1.10(g) to (i) only apply to postal interruptions and emergencies. The provisions of 35 U.S.C.…
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