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§ 4.15 Signature - none Patent Cooperation Treaty
§ 4.15 Signature
(a) Subject to paragraph (b), the request shall be signed by the applicant or, if there is more than one applicant, by all of them.
(b) Where two or more applicants file an international application which designates a State whose national law requires that national applications be filed by the inventor and where an applicant for that designated State who is an inventor refused to sign the request or could not be found or reached after diligent effort, the request need not be signed by that applicant if it is signed by at least one applicant and a statement is furnished explaining, to the satisfaction of the receiving Office, the lack of the signature concerned.
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