Administrative Instructions under the Patent Cooperation Treaty
Notification of Receipt of an Observation to the Applicant and
Comments by the Applicant in Response to an Observation
(a) The International Bureau shall notify the applicant when the first third party observation is received in relation to an international application. If further observations are received, the International Bureau shall notify the applicant of the receipt of all further observations promptly after the expiration of 28 months from the priority date.
(b) The applicant may, within 30 months from the priority date, submit comments in response to any third party observation which has been received. The comments shall be submitted in English, French or the language of publication of the international application, at the choice of the applicant, and shall be promptly made available for public inspection.