Contact Us

For best results, please complete this form in Chrome, Firefox or Safari.

If you cannot tick the verification box, please ensure you are using Chrome, Firefox or Safari. In Internet Explorer the box may not function correctly.

Additional information

General or legal questions about the Patent Cooperation Treaty (PCT)

Tel: +41 22 338 8338
(Monday to Friday 9.00 am - 6.00 pm CET)
Fax: +41 22 338 8339
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 9.00 am - 6.00 pm CET)
Fax: +41 22 910 0610
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 with ePCT, PCT-SAFE and DAS

Tel: +41 22 338 9523
(Monday to Friday 9.00 am - 6.00 pm CET)
PCT eServices
ePCT
Digital Access Service (DAS)