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53.8 Signature - Patent Cooperation Treaty
§ 53.8 Signature
(a) Subject to paragraph (b), the demand shall be signed by the applicant or, if there is more than one applicant, by all applicants making the demand.
(b) Where two or more applicants file a demand which elects a State whose national law requires that national applications be filed by the inventor and where an applicant for that elected State who is an inventor refused to sign the demand or could not be found or reached after diligent effort, the demand need not be signed by that applicant ("the applicant concerned") if it is signed by at least one applicant and
(i) a statement is furnished explaining, to the satisfaction of the International Preliminary Examining Authority, the lack of signature of the applicant concerned, or
(ii) the applicant concerned did not sign the request but the requirements of Rule 4.15(b) were complied with.
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