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‑IX, 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.