(c) Where the rectification of an obvious mistake has been authorized, it shall be effective: (i) in the case of a mistake in the international application as filed, from the international filing date; (ii) in the case of a mistake in a document other than the international application as filed, including a mistake in a correction or an amendment of the international application, from the date on which that document was submitted.
(d) Where the competent authority refuses to authorize a rectification under Rule 91.1, the International Bureau shall, upon request submitted to it by the applicant within two months from the date of the refusal, and subject to the payment of a special fee whose amount shall be fixed in the Administrative Instructions, publish the request for rectification, the reasons for refusal by the authority and any further brief comments that may be submitted by the applicant, if possible together with the international application.
Rule 26.4 shall apply mutatis mutandis as to the manner in which the proposed rectification shall be indicated.
91.3 Authorization and Effect of Rectifications (a) The competent authority shall promptly decide whether to authorize or refuse to authorize a rectification under Rule 91.1 and shall promptly notify the applicant and the International Bureau of the authorization or refusal and, in the case of refusal, of the reasons therefor.
91.1 Rectification of Obvious Mistakes (a) An obvious mistake in the international application or another document submitted by the applicant may be rectified in accordance with this Rule if the applicant so requests.