What is the significance of the ‘correspondence address’ in USPTO patent applications?

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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. What is the significance of the ‘correspondence address’ in USPTO patent applications? The correspondence address is crucial in USPTO patent applications for several reasons: It determines where the USPTO sends all official communications regarding the application. It can be used to designate a specific attorney or agent to receive correspondence. Changes to the correspondence address must be made in writing to ensure proper routing of communications. According to MPEP 403.01 : “The correspondence address is used by the Office for mailing notices, actions, and other communications relating to the application.” Additionally, the MPEP states: “A change of correspondence address may be filed with the USPTO during the pendency of an application, and in a patent file.” This emphasizes the importance of keeping the correspondence address up-to-date to ensure timely receipt of important USPTO communications. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Change of Correspondence Address for Continuation/Divisional Applications MPEP 403.01(b) Change of Correspondence Address After Oath Filing MPEP 403.01(b) Change of Correspondence Address Before Oath/Declaration MPEP 403.01(b) Correspondence Address May Differ From Post Office Address MPEP 403 Permitted Selection of Correspondence Address for Patent Applications MPEP 403.01(b) Notices and Communications to Correspondence Address MPEP 403.01(b) Correspondence Address Required for Notification MPEP 403 Permitted Signatures for Amendments and Other Papers Required MPEP 403.01(b) Required Requirement for Specifying Correspondence Address MPEP 403.01(b) Required Assignee May Specify Correspondence Address When Prosecuting ...