Skip to main content
A Singapore Government Agency Website How to identify
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites
Secure websites use HTTPS
Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Beware of Impersonation Scams

Government officials will NEVER ask you to transfer money or disclose bank log-in details over a phone call. Call the 24/7 ScamShield Helpline at 1799 if you are unsure if something is a scam. Learn about the latest scam updates at scamshield.gov.sg.

Intellectual Property Office of Singapore

PCT Route

Learn how to file an international patent application through the Patent Cooperation Treaty (PCT) route, including the process, benefits, and requirements for entering the national phase in Singapore.

Last updated 30 June 2025

Patent Cooperation Treaty

The Patent Co-operation Treaty (PCT), administered by the International Bureau of WIPO (IB), is an international treaty to facilitate patent protection for an invention in several countries simultaneously through one application with a single office.

To be eligible for filing an international application under PCT directly with IPOS, you must be a resident or national of Singapore. In any case, possession of a real and effective industrial or commercial establishment is considered residence in that State. For more information, please refer to Guidelines for the Determination of a Real and Effective Industrial or Commercial Establishment [PDF, 141 KB].

You may electronically file an international application using ePCT, which is an electronic filing service implemented by WIPO.

For more information on how to register and get started on ePCT, please refer to WIPO's FAQs, Step-by-step Process For New Users, and User Guide.

For more information on PCT fees and options for International Searching and Preliminary Examining Authorities, please go to PCT Forms and Fees.

Note: IPOS accepts Chinese as a language for PCT international applications. A final search report can also be issued in Chinese if you select IPOS as an International Searching and Preliminary Examination Authority.

Summary of the international application procedure:

International Phase

  • Applicant files International Application under PCT with IPOS

  • International Filing Date is accorded to the International Application

  • International Search Report (ISR) & an International Preliminary Report on Patentability Chapter I (IPRP (I)) issued

Publication

  • At the 18th month, the International Application is published with the ISR

  • Applicant files a demand with a competent International Preliminary Examination Authority (IPEA) - optional

  • International Preliminary Report on Patentability Chapter II (IPRP (II)) issued

National Phase

Depending on the complexity of the invention, it may take about 2 to 4 years for a patent application to be granted.

Learn about applying for a patent in Singapore under the Patent Co-operation Treaty (PCT).