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.
Current U.S. classification information for all patent applications (non-provisional utility and plant) published by the USPTO from March 15, 2001 to present. Approx. 450 main divisions of technology, called classifications/classes, broken into approx. 150,000 subdivisions, called subclassifications/subclasses. Provided in published patent application number sequence with the current U.S. original classification/subclassification and any cross-reference classification/subclassifications with the format of ASCII text.
Latest Release2021-03-22 Download (35.63 MB)
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