{"uid":"cap_uvVvOUE9IdvdmosBrqQeb","slug":"legalpulse-trademark-knock-out-check-0c39192a","name":"LegalPulse Trademark Knock-Out Check","description":"Trademark knock-out check with live official verification: name in, conflict risk verdict out. Candidate conflicting marks are looked up in the USPTO TSDR system in real time and returned as verbatim official records (LIVE/DEAD status, owner, classes, dates) — research leads that could not be officially verified are labeled as such. US federal register; names the right register for non-US markets. Call before you commit to a name.","url":"https://legalpulse.theaslangroupllc.com/api/legal/trademark-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","errors":{"400":{"example":{"error":"invalid request"},"description":"Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."},"402":{"description":"Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."},"500":{"example":{"error":"upstream_failed"},"description":"Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."}},"example":{"risk":"potential_conflict","headline":"A LIVE registration for a near-identical mark exists in class 9 — proceed only with attorney review.","conflicts":[{"mark":"NIMBUS","severity":"significant","serial_number":"97123456","why_it_conflicts":"Near-identical wordmark; overlapping software goods (class 9/42)"}],"next_steps":["Run the official search at tmsearch.uspto.gov","Consult a trademark attorney"],"official_verified_records":[{"mark":"NIMBUS","owners":["Nimbus Inc."],"classes":["009"],"tm5_status":"LIVE/REGISTRATION/Issued and Active","serial_number":97123456}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":{"p10Cents":"50.0000","medianCents":"50.0000","p90Cents":"50.0000","minCents":"50.0000","maxCents":"50.0000","p95Cents":"50.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2BxTrC81oggahn92jQm88","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a live USPTO TSDR trademark knock-out search for a candidate name, returning official conflict risk verdicts with verbatim active/dead mark records, owner details, classes, and filing dates.","exampleAgentPrompt":"Before I commit to the name 'Waveline' for my new fintech app, can you run a trademark knock-out check against the US federal register and tell me if there are any live conflicting marks, who owns them, and what classes they cover?","exampleUseCases":null,"resultDescription":"Returns a conflict risk verdict for the queried name, plus a list of candidate conflicting marks pulled in real time from USPTO TSDR — each record includes LIVE/DEAD status, registrant owner name, international goods/services classes, key dates (filing, registration), and a flag indicating whether the match could be officially verified. Unverifiable research leads are labeled as such.","failureModes":["Name query returns no results — may indicate no conflicts or an overly narrow search term","USPTO TSDR system temporarily unavailable — API may return an error or degraded results","Very common or generic terms may return an overwhelming number of candidate conflicts","Non-US trademarks are out of scope — endpoint covers US federal register only; non-US markets are flagged but not searched","Payment failure (x402) blocks the call before any search is performed"],"whenToPreferThis":"Use this endpoint when you need live, officially-sourced USPTO trademark conflict data for a specific candidate name before committing to it — not for general IP education, full trademark application filing, or non-US trademark research. Prefer this over static databases or general legal guidance endpoints when real-time TSDR verification and verbatim official records matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T20:19:49.755Z","isFirstParty":false,"canonicalSlug":"legalpulse-trademark-knock-out-check-0c39192a"}