Patent Law FAQ
This FAQ answers all your questions about patent law, patent procedure, and the patent examination process.
How are historical patent assignment records maintained?
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.
Topics:
MPEP 300 – Ownership and Assignment,
MPEP 301-Ownership/Assignability of Patents and Applications,
Patent Law,
Patent Procedure