What happens if the last-known address of an unavailable inventor is invalid?

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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. If the last-known address of an unavailable inventor is invalid, the petitioner must make a diligent effort to find a valid address. According to MPEP 409.03(b) : ‘If the last known address of the nonsigning inventor(s) is invalid, petitioner must state what efforts were made to find a current address.’ This means the petitioner should document their attempts to locate the inventor, which may include searching public records, contacting former employers, or using people-finding services. If all efforts fail, this should be clearly stated in the petition. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Last Known Address of Inventor Required MPEP 409.03(b) Required Applicant Must State Relationship to Inventor MPEP 409.03(b) Required Application Can Be Filed When Inventor Is Unavailable MPEP 409.03(b) Permitted Oath Required for Pre-AIA Application MPEP 409.03(b) Required Petitioner Must State Objections Within 3 Weeks MPEP 103 Recommended Corporation Can Make Application MPEP 409.03(b) Requirements for Pre-AIA Application Deposits MPEP 409.03(b) Required Agent Can File on Inventor's Behalf If Unavailable MPEP 409.03(b) Prohibited Pre-AIA 37 CFR 1.47(a) Precludes 1.47(b) MPEP 409.03(b) Prohibited Corp Officer Must Sign Oath for Pre-AIA 37 CFR 1.47(b) Application MPEP 409.03(b) Recommended Other Related FAQs 5 FAQs Collapse What happens if an inventor becomes available after a 37 CFR 1.47(a) petition is granted? How does the USPTO handle confidentiality in 37 CFR 1.47(a) petitions? Can a petition under 37 CFR 1.47(a) be filed for multiple unavailable inventors? What is the process for filing a patent application if an inventor is legally incapacitated? Can a paten...