How is correspondence handled when two patent practitioners are appointed?

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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. When two patent practitioners are appointed, the handling of correspondence depends on how and when they were appointed. According to MPEP 403.02 : “If, after one patent practitioner is appointed, a second patent practitioner is later added by submission of a new power of attorney appointing both practitioners, correspondence will be mailed to the latest correspondence address of record.” This means that the USPTO will use the most recently provided correspondence address. It’s important to note that this is governed by 37 CFR 1.33 and 37 CFR 1.76 , which provide regulations on correspondence and application data sheets. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Specify Correspondence Address for Two Patent Practitioners MPEP 403.02 Recommended Correspondence vs Power of Attorney Customer Numbers MPEP 403 Permitted Correspondence Address Required for Notification MPEP 403 Required Correspondence Address May Differ From Post Office Address MPEP 403 Permitted Attorney/Agent Correspondence Address Requirement MPEP 403 Correspondence Address Required for Notification MPEP 403 Permitted Power of Attorney for Design Patents Only MPEP 403 Double Correspondence Not Allowed With Applicant and Attorney MPEP 403 Second Practitioner Added Requires Updated Correspondence Address MPEP 403.02 Customer Number for Correspondence Address Required MPEP 403 Permitted Other Related FAQs 5 FAQs Collapse How does the USPTO determine the correspondence address when multiple patent practitioners are involved? What happens if a new power of attorney is filed listing only one of two previously appointed patent practitioners? How is correspondence handled when two patent practitioner...