What happens if the USPTO cannot locate a patent or application file?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-09 1 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. If the USPTO cannot locate a file after a reasonable search, they will notify the applicant or patentee and set a time period for compliance. According to 37 CFR 1.251(a) , the applicant or patentee must respond by: Providing a copy of their record of correspondence with the USPTO Producing their record for the USPTO to copy Stating that they do not possess any record of correspondence The specific requirements are outlined in the notice and must be followed to avoid potential consequences. Related Rules from the Manual of Patent Examining Procedure 1 rules Collapse Requirement for Handling Models, Exhibits, and Specimens MPEP 508 Other Related FAQs 5 FAQs Collapse What types of communications might be received after a patent is granted? Can I submit additional information after my patent application has been abandoned? What should I do if I don&#8217;t have any record of correspondence with the USPTO for an unlocatable file? What happens to papers received after a patent application is patented or abandoned? What is the procedure when the USPTO cannot locate a patent or application file?