Contact Us: PCT – The International Patent System
For best results, please complete this form in Chrome, Firefox or Safari.
Mandatory fields are marked as (required).
Additional information
General or legal questions about the PCT
- Tel: +41 22 338 8338 (Monday to Friday 09:00–18:00 CET)
- PCT Information Service
For questions concerning a specific application you can directly contact the authorized officer using the details indicated at the bottom of the IB form.
WARNING: Requests for payment of fees
Questions about filing a PCT application using the RO/IB
- Tel: +41 22 338 9222 (Monday to Friday 09:00–18:00 CET)
- RO/IB webpage
In the case of filing by hand-delivery, a letter box is available 24 hours a day, seven days a week.
Questions about e-filing
Tel: +41 22 338 9523 (Monday to Friday 09:00–18:00 CET)