What is the purpose of the affidavit required for claiming priority based on an inventor’s certificate?

The affidavit required for claiming priority based on an inventor’s certificate serves a specific purpose, as outlined in MPEP 213.05: The affidavit or declaration specified under 37 CFR 1.55(l) is only required for the purpose of ascertaining whether, in the country where the application for an inventor’s certificate originated, this option generally existed for applicants…

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