Unavailability of some web services on Saturday

Owing to technical maintenance work the following services will be temporarily unavailable on Saturday 25 May between 8.00 and 18.00 hrs CET:

  • Calendar of events
  • Online forms
  • Discussion forms

The outage will also affect websites about the Trilateral co-operation, the Five IP offices and Common Patent Classification.

We apologise for any inconvenience.

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