Retrieve registered trademark status and prosecution documents via the USPTO TSDR API

Steps

1. Obtain your ODP API key from developer.uspto.gov (required as of June 2026)
2. Query trademark case status by serial number using the TSDR API endpoint documented at data.uspto.gov/apis; pass the serial number as a path or query parameter per the current ODP spec
3. Parse the status response to extract current trademark status code (e.g., REGISTERED, ABANDONED, CANCELLED), status date, international class codes, and identification of goods/services
4. Retrieve prosecution documents (office actions, responses, notices of allowance) from the documents sub-resource of the trademark record; filter by document code to target specific document types
5. Download documents using the document URIs returned in the metadata; they are served as PDFs
6. To monitor a portfolio, store the last-seen status date and poll periodically; the USPTO does not offer a push webhook for trademark status changes