Cooperative Patent Classification (CPC) Master Classification Files for U.S. Patent Grants

Contains Cooperative Patent Classification (CPC) classification information for all U.S. patent grants issued by the U.S. Patent and Trademark Office (USPTO) from July 31, 1790 to present.It is available as XML with schemas or text monthly (usually by the 15th of the month).

Data and Resources

Additional Info

Field Value
Last Updated July 14, 2025, 04:28 (UTC)
Created July 14, 2025, 04:28 (UTC)
accessRights Follow these instructions to access the data programmatically via the endpoint link (included in metadata) and create your own API key: https://data.uspto.gov/apis/getting-started
columnDataDict Access column data dictionary at: https://data.uspto.gov/apis/bulk-data/search
creationMethod Learn more about dataset's creation method at: https://data.uspto.gov/bulkdata/datasets/cpcmcpt
creatorEmail
creatorName
dataProvenance [{'date': '2025-06-17', 'name': 'Creation and publication of dataset'}, {'date': '2025-06-17', 'name': 'Date of collection of last data point'}, {'date': '2025-07-14', 'name': 'Dataset updated'}]
dataType XML
datasetPageUrl https://data.uspto.gov/bulkdata/datasets/cpcmcpt
datasetVersion v2.0
docsURL https://data.uspto.gov/bulkdata/datasets/cpcmcpt
issueDate 2025-06-17
lang English
lastUpdateDate 2025-07-14
pocEmail data@uspto.gov
pocName USPTO Office of Data Management
pocWebsite https://www.uspto.gov/about-us/organizational-offices/office-commissioner-patents/data-management
publisherEmail
publisherName
purpose Learn more about dataset's purpose at: https://data.uspto.gov/bulkdata/datasets/cpcmcpt
status submitted
theme ['patent']
timezone EST
updateFreq Monthly
uploadType dataset
usageInfo For usage information, refer to the USPTO Terms of Use: https://www.uspto.gov/terms-use-uspto-websites
versionNotes For version details, refer to the USPTO release notes: https://data.uspto.gov/support/release/summary