{"name":"trademark-search","description":"Trademark search / USPTO trademark lookup / TSDR / federal trademark database. Look up any US trademark by serial number or registration number. Returns mark text, owner, status, filing date, classes, goods/services. Federal public TSDR API.","price":"$0.03","method":"POST","input_schema":{"properties":{"serial_number":{"type":"string","description":"8-digit USPTO serial number (e.g. '78787878')."},"registration_number":{"type":"string","description":"7-digit USPTO registration number (e.g. '3000000')."}}},"input_example":{"serial_number":"73140373"},"output_example":{"found":true,"mark_text":"APPLE","status_category":"Live","filing_date":"1977-09-14"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}