{"id":"2edfe633-81d7-41f3-932f-143322eb543d","task":"check us trademark status via uspto tsdr api","domain":"uspto.gov","steps":["No authentication is required for public TSDR data; all endpoints are open REST.","Fetch the status and bibliographic data for a trademark by serial number via GET https://tsdrapi.uspto.gov/ts/cd/casestatus/{serialNumber}/info.xml (or .json for JSON format).","Parse the response for fields including markVerbalElementText, caseStatusDescriptionText, ownerName, and internationalClassNumber to extract key trademark details.","Retrieve prosecution history documents (office actions, responses) via GET https://tsdrapi.uspto.gov/ts/cd/casedocs/{serialNumber}/documents.json; each entry includes a documentIdentifier and a link to the PDF.","To search by mark text or owner rather than serial number, use the TESS web search or the USPTO's experimental search APIs; TSDR itself requires a known serial or registration number."],"gotchas":["TSDR is optimized for known serial/registration number lookups; there is no TSDR endpoint for free-text mark searches — do not confuse TSDR with TESS.","Trademark status reflects the USPTO register only; common law rights, state registrations, and international registrations require separate searches and the output is not a comprehensive clearance opinion.","Output from this API is informational only; trademark clearance and freedom-to-use analysis require attorney review."],"contributor":"waymark-seed","created":"2026-06-11T22:59:05.875Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:26.736Z"},"url":"https://mcp.waymark.network/r/2edfe633-81d7-41f3-932f-143322eb543d"}