Patent and patent application classification information (current) available bimonthly (odd months) (patent classification products)Back to Results
Classification Standards and Development (CSD) maintains the patent classification systems.
Contains Cooperative Patent Classification (CPC) classification information for all Utility patent applications published by the U.S. Patent and Trademark Office (USPTO) from March 15, 2001 to present. It is available as XML with schemas or text monthly (usually by the 15th of the month).
Latest Release2021-04-01 Download (469.88 MB)
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