Each demand for international preliminary examination shall be subject to the payment of a fee for the benefit of the International Bureau ("handling fee") to be collected by the International Preliminary Examining Authority to which the demand is submitted.
(a) The amount of the handling fee is as set out in the Schedule of Fees.
(i) is freely convertible into Swiss francs, the Director General shall establish, for each Authority which prescribes such a currency for the payment of the handling fee, an equivalent amount of that fee in the prescribed currency according to directives given by the Assembly, and the amount in that currency shall promptly be transferred by the Authority to the International Bureau;
(ii) is not freely convertible into Swiss francs, the Authority shall be responsible for the conversion of the handling fee from the prescribed currency into Swiss francs and shall promptly transfer that fee in Swiss francs, in the amount set out in the Schedule of Fees, to the International Bureau. Alternatively, if the Authority so wishes, it may convert the handling fee from the prescribed currency into euros or US dollars and promptly transfer the equivalent amount of that fee in euros or US dollars, as established by the Director General according to directives given by the Assembly as referred to in item (i), to the International Bureau.
(b) Subject to paragraph (c), where the demand was transmitted to the International Preliminary Examining Authority under Rule 59.3, the handling fee shall be paid within one month from the date of receipt by that Authority or 22 months from the priority date, whichever expires later.
(c) Where, in accordance with Rule 69.1(b), the International Preliminary Examining Authority wishes to start the international preliminary examination at the same time as the international search, that Authority shall invite the applicant to pay the handling fee within one month from the date of the invitation.
The International Preliminary Examining Authority shall refund the handling fee to the applicant: