6.031. How should the international application be identified? All documents sent and all payments of fees to a designated Office (and any letter accompanying such documents or payments) should indicate – if already known – the national serial number given to the international application by the designated Office. Where the national number is not yet known (or not given), the international application number should be indicated, preferably together with the international filing date, the name of the applicant and the title of the invention.
Date retrieved: 24 November 2017