What happens if an assignee’s ownership changes during patent prosecution?

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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 an assignee’s ownership changes during patent prosecution, it’s crucial to update the USPTO records. As per MPEP 325 : “A new statement under 37 CFR 3.73(c) is required to be filed when ownership changes to another assignee.” This means that: The new assignee must file a new 37 CFR 3.73(c) statement. The new statement must establish the new assignee’s ownership. Until the new statement is filed, the previous assignee remains the party of record. It’s important to keep ownership records up-to-date to ensure that the correct party has the right to take action in the application. For more information on patent prosecution, visit: patent prosecution . For more information on USPTO records, visit: USPTO records . Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Statement Under 37 CFR 3.73(c) MPEP 325 Assignee Must Establish Ownership to Take Action MPEP 325 Assignee Must Become Applicant to Take Action MPEP 325 Required Assignee Must File Request to Change Applicant Under 37 CFR 1.46(c)(2) MPEP 325 Required Partial Assignee Must Establish Ownership Interest MPEP 325 Assignee Must Establish Ownership MPEP 325 Required Duplicate 37 CFR 3.73(c) Statement Not Required MPEP 325 Required Assignee Must Establish Ownership Before Taking Action on Patent Application Filed On or After September 16, 2012 MPEP 325 Required Assignee Must Establish Ownership for Post-AIA Actions MPEP 325 Required Assignee Must Establish Ownership When Taking Action MPEP 325 Required Other Related FAQs 5 FAQs Collapse Who can take action as an assignee in a patent application filed on or after September 16, 2012? Can multiple assignees take action in a patent application? What is the purpose of F...