How do I claim priority in an international patent application?

To claim priority in an international patent application, you must indicate the following information on the Request form at the time of filing:

  • The country in or for which the earlier application was filed
  • The date of filing
  • The application number

This is in accordance with PCT Article 8 and PCT Rule 4.10. As stated in the MPEP, “An applicant who claims the priority of one or more earlier national, regional or international applications for the same invention must indicate on the Request, at the time of filing, the country in or for which it was filed, the date of filing, and the application number.

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Tags: International Patent Application, PCT, Priority Claim, request form