Logo of WIPO PCT, the international patent system

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The Patent Cooperation Treaty (PCT) assists applicants in seeking patent protection internationally for their inventions, helps patent Offices with their patent granting decisions, and facilitates public access to a wealth of technical information relating to those inventions. By filing one international patent application under the PCT, applicants can simultaneously seek protection for an invention in a very large number of countries. Read more about the PCT.

152 PCT Contracting States

Map of PCT contracting states

40 Years of the PCT

40 Years of the PCT
Final Act of the PCT

Amendments to the Regulations (July 1, 2017)

2017 Amendments to the Regulations

Email updates

PCT Newsletter – News and information for users of the PCT System, including fee tables and seminars. Monthly.

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How to

File your application 

 

Manage your application

ePCT with strong authentication provides online access to the file of your international application and a suite of functions to facilitate monitoring and management during the international phase.

Search published applications

Published international applications are available on PATENTSCOPE, one of WIPO's global databases.  This database also includes patent documents from 51 participating Offices providing public access, free of charge to over 67 million technology disclosures.

Contacts

For questions related to:

Your specific PCT application

Contact your “authorized officer”.

Online: Through ePCT (with or without strong authentication)

Fax: +41 22 338 82 70

PCT general or legal matters

E-mail: PCT Information Service
Tel: +41 22 338 8338
Fax: +41 22 338 8339

More about the PCT Information Service

Filing a PCT application at the receiving Office of the International Bureau

E-mail: PCT Receiving Office
Tel: +41 22 338 9222
Fax: +41 22 910 0610

More about filing a PCT application directly at the RO/IB

E-filing with ePCT and PCT-SAFE

E-mail: PCT eServices
Tel: +41 22 338 9523

More about PCT eServices, ePCT, PCT-SAFE and DAS

Available from Monday to Friday 9.00 am - 6.00 pm CET

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