Temporary unavailability of some online services on Saturday and Sunday 23 & 24 March 2024

Owing to technical maintenance work, the following online services of the EPO will be temporarily unavailable on Saturday 23rd March, between 7:00 hrs and 14:00hrs CET. Intermittent issues may still occur during the rest of Saturday, and Sunday 24th March: 

  • Online Filing 
  • Online Filing v2.0 
  • Web-form Filing 
  • Third-party Observations 

Additionally, the following online services will not be available between Saturday 23rd March 7:00 hrs and Sunday 24th March 18:00hrs CET:

  • MyEPO Portfolio
  • MyFiles
  • Mailbox
  • European Patent Register
  • Espacenet
  • IP5 Dossier exchange service
  • One Portal Dossier
  • IP5 Global Dossier
  • Open Patent Service (OPS)
  • European Publication Server

We apologise for any inconvenience.

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.