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LegalPulse Trademark Precheck
x402
LegalPulse Trademark Precheck is a paid API for AI agents from legalpulse.theaslangroupllc.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Looks up a USPTO trademark serial or registration number and returns its official LIVE/DEAD status, owner, goods/services classes, and key dates from TSDR.
Price / call$0.25
Success—
StatusUnknown
How this service works
Trademark precheck (agent-tier preview of /api/legal/trademark-check $0.50): live USPTO TSDR verification of serial/registration numbers you already have — returns the official LIVE/DEAD status, owner, classes, and dates verbatim. Does not run candidate-discovery research or produce a conflict-risk verdict; those require the full product. For legal, brand-naming, and IP agents with small per-call budgets.
Output
Returns verbatim USPTO TSDR data for the queried trademark: LIVE or DEAD status, current owner name, international goods/services classes, filing date, registration date, and relevant expiration or cancellation dates. Does not include conflict-risk analysis, candidate discovery, or clearance verdicts.
Example use cases
Brand acquisition due diligence check
“I'm looking at acquiring a brand and their trademark registration number is 4567890 — can you pull the current status from USPTO to confirm it's still live, who the owner of record is, and what goods and services classes it covers?”
Licensing negotiation verification
“Before we finalize this licensing deal, can you verify that trademark serial number 87654321 is still active on USPTO and tell me the owner name and registration date so I can confirm it matches what the licensor told us?”
Competitor trademark monitoring spot-check
“I need to quickly check if our competitor's trademark, serial number 88112233, is still live or if it's gone dead — also grab the class info and any key dates you can find.”
Technical details
Endpoint
GEThttps://legalpulse.theaslangroupllc.com/api/legal/trademark-precheckWhen to prefer
Use this endpoint when you already have a specific USPTO trademark serial or registration number and need fast, authoritative LIVE/DEAD status and owner data at low cost ($0.25/call). Prefer this over the full trademark-check product when you do not need conflict-risk scoring or candidate-name discovery — e.g. for due diligence verification, licensing confirmation, or portfolio monitoring of known marks.
Side effects
- Invalid or non-existent serial/registration number returns an error or empty result
- USPTO TSDR service unavailability causes lookup failure
- Malformed input (e.g. non-numeric characters in serial number) triggers a validation error
- Rate limiting or payment failure at $0.25 per call may block repeated queries
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mark": "Nimbus Labs",
"upsell": {
"adds": "Live web research to discover candidate conflicts you don't already have serial numbers for, plus an AI-generated conflict-risk verdict.",
"price_usd": 0.5,
"full_product": "/api/legal/trademark-check"
},
"live_registrations_found": 1,
"official_verified_records": [
{
"mark": "NIMBUS",
"owners": [
"Nimbus Inc."
],
"classes": [
"009"
],
"tm5_status": "LIVE/REGISTRATION/Issued and Active",
"serial_number": 97123456
}
]
}
}Tags
x402
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