90bis.1

a) The applicant may withdraw the international application at any time prior to the expiration of 30 months from the priority date.
b) Withdrawal shall be effective on receipt of a notice addressed by the applicant, at his option, to the International Bureau, to the receiving Office or, where Article 39(1) applies, to the International Preliminary Examining Authority.
c) No international publication of the international application shall be effected if the notice of withdrawal sent by the applicant or transmitted by the receiving Office or the International Preliminary Examining Authority reaches the International Bureau before the technical preparations for international publication have been completed.