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

Contains Cooperative Patent Classification (CPC) information for all U.S. 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).

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/cpcmcapp
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/cpcmcapp
datasetVersion v2.0
docsURL https://data.uspto.gov/bulkdata/datasets/cpcmcapp
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/cpcmcapp
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