https://www.epo.org/en/service-support/availability-online-services/technical-fault-epo-phone-numbers-reference-no
Technical fault with EPO phone numbers (reference no. INC0171885) detected and resolved.
On 04.12.2023 between 07:30 and 15:00 we experienced technical problems with the EPO switch board numbers. The general free phone number 00 800 80 20 20 20 was normally available all the time.
Important notice
Legal safeguards may be available where filing or fee payment services were not available, depending on the service affected, the day and duration of the unavailability and the procedural situation. For details see Rule 134 EPC, Rule 82quater.2 PCT, the ADA (Supplementary publication 3, OJ EPO 2022) and the notice from the EPO dated 22 October 2020 (OJ EPO 2020, A120).
Please always quote the reference number indicated above when addressing the EPO in relation to this issue.