Overview
Looks up the current status of a US trademark by serial number or registration number against the USPTO's own TSDR (Trademark Status and Document Retrieval) database. This is an ID lookup, not free-text search; USPTO does not publish a public free-text trademark search API. Send serial_number or registration_number and get back mark text, owner, status category, filing date, registration date, Nice classification classes, and goods/services descriptions. Use it as a trademark status checker, USP
Health
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Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-15 03:34:14 | degraded | 402 | 2308ms | |
| 2026-10-14 15:07:11 | healthy | 402 | 3720ms | |
| 2026-10-14 09:21:36 | healthy | 402 | 168ms | |
| 2026-10-13 20:49:05 | healthy | 402 | 47ms | |
| 2026-10-13 15:24:13 | healthy | 402 | 3810ms | |
| 2026-10-13 04:24:49 | healthy | 402 | 73ms | |
| 2026-10-12 14:59:35 | timeout | — | — | timeout |
| 2026-10-12 09:42:07 | healthy | 402 | 61ms |