Tools · Brand name checker · signed result
Brand name checker with a signed receipt.
Trademark register, primary domains, and social handles — in one call, in under three seconds. Every result comes back with an Ed25519 signature so an attorney can verify it independently at /verify.
What the brand name checker probes.
Every check runs four probes in parallel and returns one screening signal drawn from all four:
- Trademark, three registers. USPTO for the United States, EUIPO for the European Union, UKIPO for the United Kingdom. Exact-string plus phoneme-distance adjacency inside your industry class.
- Domain, eight TLDs. RDAP against .com, .io, .co, .app, .dev, .ai, .net, .org. Modern brands ship on a good .co more often than a cybersquatted .com; the checker surfaces the pattern.
- Handles, key platforms. GitHub, X, LinkedIn, plus the platform-specific handles that matter for your product. A systematically taken handle across every platform is a strong signal the string is already in commercial use.
- Common-law web scan. A curated scan for prior commercial use that isn't registered yet. Additive evidence — it downgrades the signal, it doesn't decide it.
The three signals.
PROCEED
Clear across every probe. Ship. Bring the signed receipt to the attorney consult that closes the launch.
PROCEED_STRATEGIC
Workable with a specific action item — a narrower goods spec, a domain hedge, an alternative TLD. Findings name each action.
ABANDON
One or more hard blockers. Iterate to an adjacent name; the checker is free for the first five per IP.
Why signed results matter.
The single hardest thing about a brand-name check is trusting it. If the checker says PROCEED and the attorney consults says the same thing eight hundred dollars later, the check paid for itself. If it says PROCEED and the attorney disagrees, the founder wants to know what data the checker saw.
The signature primitive is our answer. Every result is Ed25519 signed. The signature binds the name, the signal, the score, and the moment. Paste any receipt at etymolt.com/verify and it checks the signature in your browser against the published Etymolt keyring — no server-side trust, no shared secret. If the signature verifies, the receipt is what we sent. If it doesn't, somebody in the middle modified it.
This is the same primitive Stripe uses for webhook receipts and Apple uses for App Store receipts. In a market where “free trademark checker” usually means “unverifiable JSON,” the receipt is the moat. The full API docs show the REST call and the MCP tool for developers who want to wire the check into their own agent loop.
Related tools
Frequently asked.
- How does the brand name checker work?
- One call, four probes in parallel: US trademark register (USPTO), EU register (EUIPO), UK register (UKIPO), and a domain + handles sweep. Result comes back as a single screening signal in under three seconds, with the specific findings that drove it.
- How many brand names can I check for free?
- Five per IP address with no signup at all. After that, sign up for the free tier for more, or pay $0.25 per check with no subscription or minimum.
- Does the checker work for one-word brand names?
- Yes, and short dictionary words get an extra distinctiveness pass — a two-syllable common word rarely has the distinctiveness needed to be exclusively registered in a common class. The checker surfaces this as a specific finding rather than a silent block.
- Can I run a shortlist of names?
- Right now the anonymous checker takes one name per call. The pattern most founders use: run the ten candidates from a shortlist through the checker one at a time, drop the ABANDONs, and short-list the top three PROCEED / PROCEED_STRATEGIC results for an attorney consult.
- What if the brand name I want is a compound word?
- Compound words are usually more distinctive than dictionary words and often survive the checker's screening better. The checker looks at each component's distinctiveness and the composition's phoneme-distance to nearby marks, so 'flowlabs' and 'flowsync' get evaluated differently even though they share the same prefix.
- How accurate is the brand name checker?
- The trademark axis was measured at AUC 0.6315 on 177,880 real Trademark Trial and Appeal Board opposition outcomes — a defensible measured number, not a marketing number. The checker is a screening signal, not a legal opinion; a registered trademark attorney is the right decision-maker for a launch.
Verify any result
See the signature?
Paste any receipt at etymolt.com/verify to verify it yourself, cryptographically, in your browser. No trust required.
Open the verifierEtymolt is a pre-launch screening signal, not a legal opinion. Screening signals are computational outputs derived from public registry data and proprietary heuristics; they are not a substitute for a clearance opinion by a licensed trademark attorney. For any launch with material legal exposure a registered trademark attorney is the correct decision-maker. Full terms: etymolt.com/terms.
Screening methodology v2.4 · TTAB AUC 0.6315 (n=177,880) · CC BY 4.0