How can an applicant correct or add a priority claim in an international application?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-09 10 Rules 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. An applicant can correct or add a priority claim in an international application according to PCT Rule 26bis.1 . This is referenced in 37 CFR 1.451(d) , which states: The applicant may correct or add a priority claim in accordance with PCT Rule 26bis.1. PCT Rule 26bis.1 allows for the correction or addition of a priority claim within 16 months from the priority date or, where the correction or addition would cause a change in the priority date, within 16 months from the priority date as so changed, whichever 16-month period expires first. However, this must be done no later than four months from the international filing date. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Priority Claim Must Be Made According to Hague Agreement MPEP 213 Permitted Time Period for Priority Claim Not Extendable MPEP 213 Required Priority Claim and Certified Copy Due for Design Application MPEP 213 Priority Claim and Certified Copy Must Be Furnished in Nonprovisional International Design Application MPEP 213 Required Priority Claim for International Design Application Filed After May 13, 2015 MPEP 213 Permitted Priority Claim Must Be Filed Within PCT Time Limits During National Stage Entry MPEP 213 Required Applicant May Claim Priority to Foreign Applications MPEP 213 Priority Claim Must Be Presented on Application Data Sheet MPEP 213 Required Priority Claim and Foreign Application Certified Copy Must Be Filed During Pendency MPEP 213 Required Priority Claim Can Be In Oath/Declaration Before Sept 16, 2012 MPEP 213 Other Related FAQs 5 FAQs Collapse What is an inventor&#8217;s certificate and how does it relate to patent priority rights? What is an interim copy of a foreign priority...