Search US trademarks by wordmark text, owner name, or goods/services — the text search the USPTO offers no public API for. Pass `query` for full-text search (ranked best-match first), or `serial` / `registrationNumber` for an exact record. Filter with `field` (mark|owner|all), `status` (live=registered+pending only, default; all=includes dead/abandoned), and `intlClass` (Nice class, e.g. 9). Returns each mark's wordmark, serial, registration number, status (+ live flag), filing/registration/abandonment dates, owner, international classes, and goods/services. Corpus: USPTO full trademark register (public domain). Use law.trademark-status for live USPTO prosecution detail on a known serial.
/api/law/trademark-searchPAYMENT-SIGNATURE.The trademark search API searches the full US trademark register by wordmark text, owner, or goods/services — the text search the USPTO offers no public API for.
Pass query for ranked full-text search, or serial / registrationNumber for an exact record. Filter by field (mark, owner, or all), status (live = registered + pending by default, or all to include dead/abandoned), and Nice international class. Each result returns the wordmark, serial and registration numbers, status and a live flag, filing/registration/abandonment dates, owner, international classes, and goods/services. Public-domain USPTO register. No API key — pay per search with x402. Use the trademark-status endpoint for live prosecution detail on a known serial.
| Name | Type | Description |
|---|---|---|
query | string | min 1 chars · max 200 chars |
serial | string | match ^\d{6,9}$ |
registrationNumber | string | match ^[0-9 ]{1,10}$ |
field | string | one of: mark | owner | all |
status | string | one of: live | all |
intlClass | string | match ^0*\d{1,3}$ |
limit | integer | min 1 · max 100 |
offset | integer | min 0 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/law/trademark-search?query=example&serial=12345®istrationNumber=example&field=mark&status=live&intlClass=example&limit=1&offset=0' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/law/trademark-search?query=example&serial=12345®istrationNumber=example&field=mark&status=live&intlClass=example&limit=1&offset=0' \ -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-search?query=example&serial=12345®istrationNumber=example&field=mark&status=live&intlClass=example&limit=1&offset=0'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.law.trademarkSearch({
"query": "example",
"serial": "12345",
"registrationNumber": "example",
"field": "mark",
"status": "live",
"intlClass": "example",
"limit": 1,
"offset": 0
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.law.trademark_search(query="example", serial="12345", registrationNumber="example", field="mark", status="live", intlClass="example", limit=1, offset=0)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 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-search",
"arguments": {
"query": "example",
"serial": "12345",
"registrationNumber": "example",
"field": "mark",
"status": "live",
"intlClass": "example",
"limit": 1,
"offset": 0
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object | |
page | object |
{
"ok": true,
"items": [
{
"serialNumber": "example",
"registrationNumber": "example",
"markText": "example",
"status": {
"code": "example",
"label": "example",
"date": "example",
"live": false
},
"filingDate": "example",
"registrationDate": "example",
"abandonmentDate": "example",
"cancellationDate": "example",
"renewalDate": "example",
"owner": "example",
"intlClasses": [
"example"
],
"goodsServices": "example",
"markDrawingCode": "example"
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"page": {
"number": 1,
"size": 1,
"pages": 1
}
}