USPTO Trademark
Retrieve one US federal trademark application or registration by its eight-digit serial number, e.g. 79392077: the mark, its status and dates, classes, goods and services, filing basis, owners, attorney and whether an assignment was recorded. Served by Croma from its copy of the register (as_of says how current the data is).
Dataset endpoint: answers from the whole source in milliseconds and carries as_of.
Request
- Base URL: https://api.croma.run
- URL: https://api.croma.run/us/uspto/trademark/v1
- Auth: HTTP bearer
Headers
Optional client-chosen key for this request (any string up to 255 characters, e.g. a UUID). Every Croma operation is an idempotent lookup: repeating a request with the same body returns the same result and creates nothing, so retrying after a timeout or network failure is always safe. The key is echoed back in the Idempotency-Key response header so you can correlate a retry with its first attempt. Each attempt that reaches the API counts against the rate limit.
Request body
Response
Successful response
Changes
No recorded changes to this operation across all 1 revision of this API.