Please note that the procedure whereby the EPO includes, free of charge, a copy of the previous application from which priority is claimed in the file of a European patent application does not apply in respect of an international application processed by the EPO as receiving Office (see point 634
). Moreover, in the case of an EP priority document, the obligation to furnish such a priority document cannot be met by a request to the IB under the Digital Access Service (DAS) to retrieve it from an electronic library, because the EPO does not participate in this system. However, where the earlier application was filed as a national application with a national office that participates in DAS, the IB may be requested to obtain a certified copy of the earlier application from the digital library. For that purpose a check-box and a text field for the required access code are provided in Box No. VI of the PCT request form.