(a) Any receiving Office may require that the applicant pay a fee to it, for its own benefit, for receiving the international application, transmitting copies to the International Bureau and the competent International Searching Authority, and performing all the other tasks which it must perform in connection with the international application in its capacity of receiving Office ("transmittal fee").
(b) The amount of the transmittal fee, if any, shall be fixed by the receiving Office.
(c) The transmittal fee shall be paid within one month from the date of receipt of the international application. The amount payable shall be the amount applicable on that date of receipt.
Source: http://www.wipo.int/pct/en/texts/articles/r14.htm
Date retrieved: 17 May 2021