Frequently asked questions about the end of the Ten-Day Rule

On 14 October 2022, the European Patent Office (EPO) announced the upcoming end of the so-called “Ten-Day Rule” for calculating deadlines triggered by EPO notifications such as office actions.

Details were sparse, and it was not initially clear what transitional provisions would be put in place. This is undeniably a major change in EPO practice, and applicants and other users of the European patent system are understandably curious as to what this means to them.

In this guide, we answer some frequently asked questions around this change, updated as we learn more.

If you have any queries which are not answered, please get in touch with your usual representative, or contact us and we will be happy to answer.