# USPTO Trademark Search via TSDR

> USPTO Trademark Search via TSDR is a paid API for AI agents from x402-deployer.x402-deployer.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-16).

Looks up a US federal trademark by serial or registration number, returning mark text, owner, status, filing date, international classes, and goods/services description.

## Facts

- Endpoint: POST https://x402-deployer.x402-deployer.workers.dev/trademark-search
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-deployer-x402-deployer-workers-dev-83bff13d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hIC-r8MFVcLiNW2Nst6Fa

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-deployer-x402-deployer-workers-dev-83bff13d -d '<json body>'
```

Example prompt: Can you look up US trademark serial number 88123456 and tell me the owner, current status, filing date, and what goods or services classes it covers?

## When to prefer this

Use this endpoint when you need authoritative, structured data directly from the USPTO TSDR federal trademark database, including owner, status, classes, and goods/services for a specific US trademark identified by serial or registration number. Prefer over web scraping or third-party trademark aggregators when accuracy and official data provenance matter.

## Known failure modes

- Serial or registration number not found in USPTO database — returns not-found error
- Invalid format for serial or registration number — returns validation error
- USPTO TSDR API upstream timeout or unavailability — returns 503 or gateway error
- Payment failure via x402 protocol — returns 402 Payment Required

## How this service works

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.

## Output

Returns the trademark's mark text, current owner name, registration/application status, filing date, international class codes, and the full goods/services description from the USPTO TSDR federal database.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "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')."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "found": {
       "type": "boolean"
      },
      "mark_text": {
       "type": "string"
      },
      "filing_date": {
       "type": "string"
      },
      "status_category": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-deployer-x402-deployer-workers-dev-83bff13d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-deployer.x402-deployer.workers.dev](https://www.zero.xyz/host/x402-deployer.x402-deployer.workers.dev/llms.txt)