law.trademark-status

Verify a US trademark by USPTO serial number (8 digits) or registration number. Returns the word mark, LIVE/DEAD status with the detailed status description and date, filing and registration dates, current owner (name, entity type, citizenship), mark type (trademark / service mark / certification mark), standard-character flag, abandonment date when applicable, and the international classes covered with their descriptions. Authoritative real-time USPTO data — confirm a mark exists and is active before relying on it for clearance, licensing, or due-diligence work. Lookup is by number only (no text search); siblings: /api/patents/search, /api/law/case-verify.

price

$0.0018 USDC per call

method

GET/api/law/trademark-status

payment

x402 v2 · USDC on Base (EIP-3009) or Solana (SPL transfer)

auth

None. Sign the payment, retry with PAYMENT-SIGNATURE.

tier

Tier 0 — no paid upstream

Parameters

Name	Type	Description
`serialNumber`	string	match ^\d{8}$
`registrationNumber`	string	match ^\d{6,8}$

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/law/trademark-status?serialNumber=12345&registrationNumber=12345'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/law/trademark-status?serialNumber=12345&registrationNumber=12345' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>'

# Or use the canonical runner (handles probe → sign → retry):
#   EVM_PRIVATE_KEY=0x... node --env-file=.env.local \
#     --experimental-strip-types scripts/x402-pay.ts \
#     'https://2s.io/api/law/trademark-status?serialNumber=12345&registrationNumber=12345'

TypeScript / Node — @2sio/sdktypescript

import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.law.trademarkStatus({
  "serialNumber": "12345",
  "registrationNumber": "12345"
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)

Python — 2siopython

import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.law.trademark_status(serialNumber="12345", registrationNumber="12345")

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)

MCP — Claude Desktop / AgentKit / any MCP hostjson

// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
//    EVM_PRIVATE_KEY funds x402 payments per call.

// claude_desktop_config.json
{
  "mcpServers": {
    "2sio": {
      "command": "npx",
      "args": ["-y", "@2sio/mcp"],
      "env": { "EVM_PRIVATE_KEY": "0x..." }
    }
  }
}

// 2. Once the server is running, agents call this tool via standard MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "law.trademark-status",
    "arguments": {
      "serialNumber": "12345",
      "registrationNumber": "12345"
    }
  }
}

Response

Field	Type	Description
`serialNumber`	string
`registrationNumber`	string
`registrationDate`	string
`filingDate`	string
`mark`	string	Word mark text; null for design-only marks.
`live`	boolean	True when the mark is LIVE (active application or registration).
`statusCode`	number
`statusDescription`	string	TM5 status family, e.g. "LIVE/REGISTRATION/Issued and Active".
`statusDetail`	string
`statusDate`	string
`dateAbandoned`	string
`markType`	string
`standardCharacterMark`	boolean
`supplementalRegister`	boolean
`owner`	object
`classes`	array
`url`	string	Official TSDR page for human review.
`source`	object

Example response datajson

{
  "serialNumber": "example",
  "registrationNumber": "example",
  "registrationDate": "example",
  "filingDate": "example",
  "mark": "example",
  "live": false,
  "statusCode": 1,
  "statusDescription": "example",
  "statusDetail": "example",
  "statusDate": "example",
  "dateAbandoned": "example",
  "markType": "example",
  "standardCharacterMark": false,
  "supplementalRegister": false,
  "owner": {
    "name": "example",
    "entityType": "example",
    "partyType": "example",
    "citizenship": "example"
  },
  "classes": [
    {
      "internationalCode": "example",
      "description": "example",
      "status": "example"
    }
  ],
  "url": "example",
  "source": {
    "provider": "example",
    "url": "example"
  }
}

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec (per-op x-payment-info, x402Payment security)
/.well-known/x402 — machine-readable service descriptor for x402-aware crawlers
/.well-known/mcp/server-card.json — MCP SEP-1649 server card
/llms.txt — plain-text manifest for LLM ingestion

2s.io is x402-native. Every call is paid per-request from a USDC-funded EVM wallet on Base — no signup, no API keys, no monthly fees. Source code: github.com/2s-io/sdk.