World Intellectual Property Organization

Contact Us

Verification Image

Please enter below the characters displayed above.

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.
 

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 PCT-SAFE, ePCT and DAS

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

WIPO official holidays

Explore WIPO