3.1 Receipt; confirmation 

The receipt of European patent applications filed via EPO Online Filing or Online Filing 2.0 is acknowledged electronically following submission. Where it becomes apparent that the acknowledgment wa's not transmittedssion failed successfully, the authority with which the application was filed promptlyEPO will transmit its the acknowledgment by other means where possible on the basis of the information supplied (see Art. 1110 of the decision of the President of the EPO dated 16 October 2024 8 July 2025, OJ EPO 2024, A88OJ EPO 2025, A52).

The receipt of European patent applications filed using the EPO Contingency Upload Service is confirmed electronically by the EPO in the service itself. An acknowledgment of receipt indicating the application number assigned is sent separately in accordance with the provisions governing the filing of documents on paper (see following paragraph).

The acknowledgement of receipt of European patent applications filed on paper (usually the last page of EPO Form 1001) is issued by the authority with which the application is filed – either the EPO (Munich, The Hague or Berlin) or the competent national authority. The receipt must be issued without delay and include the application number and the date of receipt.