A copy of the application together with the international search report or a declaration in accordance with Art. 17(2)(a) PCT is communicated by the International Bureau to the EPO as a designated Office in accordance with Art. 20(1)(a) PCT. Furthermore, the EPO does not require the applicant to furnish a copy of the international application (Rule 49.1(a-bis) PCT). The EPO as a designated Office will then examine the application for compliance with the requirements of the EPC (see in particular E-VIII, 2.3).
The International Bureau shall communicate the International Preliminary Report on Patentability (Chapter I of the PCT) and any informal comments received from the applicant to the EPO as designated Office at 30 months from the priority date.