2.2 How must an international application be filed with the EPO as receiving Office?
2.2.4.How can an international application be filed electronically on a physical medium ("offline filing")?
2.2.009The physical media accepted by the EPO as receiving Office are CD-R, DVD+R and DVD-R. For more information, please refer to the WIPO PCT Guide.19
2.2.010If an international application is filed on a physical medium, the acknowledgement of receipt is sent by post using EPO Form 1031, in the same way as it would be for an application filed by delivery by hand or by post (see point 2.2.020).