How are historical patent assignment records maintained?

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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. The USPTO maintains historical patent assignment records separately from more recent records. MPEP 301.01 explains: ‘The historical database of assignments is maintained separate and apart from the database of assignments affecting title recorded since 1980.’ This means that: Records prior to August 1980 are kept in a separate historical database These older records may not be available through the online Patent Assignment Search Accessing historical records may require different procedures or direct contact with the USPTO For researchers or legal professionals needing access to pre-1980 assignment records, it’s advisable to contact the USPTO’s Patent and Trademark Resource Centers or the Assignment Recordation Branch for assistance. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Patent and Trademark Assignment Records Open to Public Inspection MPEP 301.01 Record of Patents and Applications Required MPEP 301 Required Assignment Records Prior to 1837 Not Available MPEP 301.01 Definitions for Ownership and Assignability of Patents and Applications MPEP 301 Required Images of Assignment Records After June 1998 Viewable Online MPEP 301.01 Public Inspection of Assignment Records for Pre-AIA Patents MPEP 301.01 Assignment of Patent Must Be in Writing MPEP 301 Definition of Assignment MPEP 301 Public Access to Assignment Records for Abandoned Patents MPEP 301.01 Required Patent Assignment Records Open for Public Inspection MPEP 301.01 Other Related FAQs 5 FAQs Collapse What information is available in USPTO patent assignment records? How does the USPTO handle confidential patent assignment information? What is the significance of recording a patent assignment? Are all...