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| Office of Patent Classification | ||
The Office of Patent Classification maintains the U.S. Patent Classification system.
Organization and Staff
Patent Classification Resources
- Classification Concordance Patents, USPC to IPC
- Classification Definitions, Patent
- Classification Definitions, Printable Definitions (PDF)
- Classification Index, Patents
- Classification Manual, Patents
- Classification Manual, Printable Schedules (PDF)
- International Classification Resources
Documents and Reports Related to the Manual of Classification
- Overview of the Classification System (PDF)
- Classes Within the U.S. Classification System (Arranged by Related Subjects) (PDF)
- Classes Arranged by Art Unit (PDF)
- Classes Arranged Numerically With Art Unit and Search Room Locations (PDF)
- Classes Arranged in Alphabetical Order (PDF)
Related Patent Links
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