Rule 19

1. [Manner of Identification] Where it is required that an application be identified by its application number, but such a number has not yet been issued or is not known to the person concerned or his representative, the application shall be considered identified if one of the following is supplied, at that person's option:
(i) a provisional number for the application, if any, given by the Office;
(ii) a copy of the request part of the application along with the date on which the application was sent to the Office;
(iii) a reference number given to the application by the applicant or his representative and indicated in the application, along with the name and address of the applicant, the title of the invention and the date on which the application was sent to the Office.


2. [Prohibition of Other Requirements] No Contracting Party may require that identification means other than those referred to in paragraph 1 be supplied in order for an application to be identified where its application number has not yet been issued or is not known to the person concerned or his representative.