This service allows applicants to claim priority over a previous application using a copy of the priority document in a secure World Intellectual Property Organization (WIPO) database. By participating in the scheme, applicants will not have to provide a certified copy of the priority document separately to each participating patent office with which the patent application is filed. Instead, they will simply have to provide an access number supplied by the WIPO and authorise consultation of the document.
This is done, after filing an application, by presenting a certified copy of the application to deposit a patent document, utility model or industrial design document in WIPO's digital library.
Subsequently, when filing applications claiming priority for that application, the applicant only needs to refer to that deposit in the WIPO digital library, indicating the access code provided.
Once the application has been filed, the deposit of a certified copy of the utility model or patent document in WIPO's digital library can be requested by submitting form PDAS1 through the eOLF application, using the ES(TSUBS) module for subsequent procedures.
More information is available from the following link:
WIPO DAS service information