What is the difference between a ‘country’ and a ‘regional patent office’ in the context of foreign priority claims?

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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. In the context of foreign priority claims, there’s an important distinction between a ‘country’ and a ‘regional patent office’: Country: A sovereign nation that has its own patent system and can issue patents directly. Regional Patent Office: An intergovernmental organization that processes patent applications on behalf of multiple member countries. The MPEP states: The right of priority may be based upon an application filed in a foreign country or in a regional patent office. ( MPEP 213 ) Regional patent offices, such as the European Patent Office (EPO) or the African Regional Intellectual Property Organization (ARIPO), allow applicants to file a single application that can potentially lead to patent protection in multiple member countries. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Certified Copy of Foreign Application Must Be Filed Within Time Limits MPEP 213 Required Certified Copy of Foreign Application Required for PCT National Stage MPEP 213 Required Certified Copy of Foreign Application Must Be Filed Within Four Months of National Stage Commencement or Sixteen Months from Prior Filing Date MPEP 213 Required Certified Copy of Foreign Application Due Within Specified Time MPEP 213 Required Priority Claim and Foreign Application Certified Copy Must Be Filed During Pendency MPEP 213 Required Translation of Foreign Application Must Be Accurate MPEP 213 Required Priority Claim for Foreign Application Not Required for Restoration Petition MPEP 213 Same Inventor for Foreign Priority Claim MPEP 213 Required Requirement for Foreign Application in WTO Member Country MPEP 213 Required Priority Benefit for US Patent Applications MPEP 213 Permitted Other Related...