What is a ‘chain of title’ in patent ownership?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-09 4 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. A ‘chain of title’ in patent ownership refers to the documented history of a patent’s ownership from its original assignment to its current owner. MPEP 314 mentions this concept in relation to name changes and mergers: Although a mere change of name does not constitute a change in legal entity, it is properly a link in the chain of title. Documents of merger are also proper links in the chain of title. The chain of title includes: Original patent assignment Subsequent transfers of ownership Business name changes Mergers and acquisitions Any other events affecting patent ownership Maintaining a clear and unbroken chain of title is crucial for establishing ownership rights, facilitating patent transactions, and providing clarity in potential patent litigation. Related Rules from the Manual of Patent Examining Procedure 4 rules Collapse Certificates for Name Changes and Mergers Required MPEP 314 Permitted Name Change Is a Link in Chain of Title MPEP 314 Certificates Showing Name Change or Merger Must Be Recorded MPEP 314 Merger Documents as Chain of Title Links MPEP 314 Other Related FAQs 5 FAQs Collapse Why is it important to record certificates of name change or merger for patents? What types of certificates are recordable for patent ownership changes? What documents are recordable for name changes or mergers in patent ownership? Why is it important to record business name changes and mergers for patents? Does a change of business name constitute a change in legal entity for patent purposes?