Is My Business Name Taken? How to Actually Check (2026)
A business name can be free on every domain registrar and still be legally taken. Checking it properly means four separate systems that don't talk to each other — the domain (RDAP), the USPTO federal trademark register, your state's Secretary of State registry, and common-law use across the open web and social handles. Here's how to check each one, and the trap that catches most founders.
A business name is rarely “taken” in just one place. To know if a name is actually available you have to clear it in four separate systems that don’t share data: the domain name (checked properly through RDAP, not a registrar’s upsell search), the USPTO federal trademark register, your state’s Secretary of State business registry, and common-law use across Google and the social platforms. A name can be available on every domain registrar and still be legally taken by an existing trademark.
That gap is where most founders get burned. They check one search box, see “available,” build a brand around it, and discover the conflict after they’ve printed the signage. Here is how to check each layer the right way.
What “taken” actually means
There is no single registry of business names. “Taken” is really four independent questions, and a name can pass three and fail the fourth:
- Is the domain registered?
- Is there a federal trademark for it in your industry?
- Is it registered as a business entity in your state?
- Is someone already using it commercially (common-law rights)?
Exact-match availability in one of these is not clearance. The legal test is not “is the string identical” — it is likelihood of confusion, which sweeps in misspellings, plurals, and phonetic twins.
1. Is the domain available?
Check it through RDAP— the IETF’s structured replacement for WHOIS — or a registrar you trust, and look at the .com first. A registered .com pointing at a live site is the strongest single signal that a name is in active use. Be wary of registrar search boxes that flash “available!” while steering you toward premium alternatives; confirm the authoritative registration status, not the upsell.
Important: a taken domain is a marketing problem, not automatically a legal one. You can build a brand on a different TLD. The domain check tells you what’s available to buy — it does not tell you what you’re allowed to call yourself.
2. Is it a registered trademark?
Search the USPTO federal trademark register and run a knockout search: the exact name plus close variants, scoped to your Nice classification— the international class your goods or services fall under. Trademarks are class-specific. “Delta” exists as both an airline and a faucet brand because they don’t compete. What you’re looking for is a confusingly similar mark in your class, not just an identical one anywhere.
3. Is it registered with your state?
Run your state’s Secretary of Statebusiness-entity search in the state where you’ll form the company. Two businesses can’t register the same entity name in the same state. This is separate from trademark: a state registration secures the entity name locally, not nationwide brandrights, and it won’t stop a company in another state from using the name.
4. Is someone already using it? (common-law)
Even with no federal trademark on file, prior commercial use creates common-law rightsin that business’s geography. Search Google for the exact name plus your industry, and check the handles on Instagram, X, TikTok, YouTube, and LinkedIn. An active brand using the name — registered or not — is a real conflict.
The trap: passing all four still isn’t a guarantee
Clearance is about similarity, not identical strings. A name that’s free as an exact match can still collide with a registered mark that is a plural, a misspelling, or a phonetic equivalent in your class. This is the point where a trademark attorneyearns the fee — a formal clearance opinion is a legal judgment, and these checks are research, not legal advice. We always recommend getting an attorney’s opinion before you commit a finalist to print.
The faster way to clear a name
Doing all four checks by hand, for every candidate, is the slow part of naming. Brand Cleared runs them automatically — an RDAP domain sweep, a USPTO federal knockout, social-handle probing across seven platforms, and a common-law SERP sweep — across about 100 candidate namesin 10 to 15 minutes, then scores and ranks what survives. It’s a research tool that does the mechanical work so you and your attorney can focus on the finalist.
Check your name across all four — start free →
Frequently asked questions
Can I use a name if the .com is taken but the trademark is free?
Often yes — a taken domain is not a legal barrier on its own. Domain ownership and trademark rights are separate systems. You can operate as a brand on a different domain (a .co, a .app, or yourbrand-hq.com) as long as the name itself is clear of confusingly similar trademarks in your industry class. The taken .com is a marketing and credibility cost, not a legal one.
Does registering an LLC protect my business name?
Only inside that one state, and only against another entity registering the identical name in that same state. A Secretary of State registration gives you the entity name — it does not give you nationwide brand rights and will not stop a company in another state from using the same name. Trademark registration with the USPTO is what creates federal brand protection.
Is a name safe if it's available on all social media?
Available handles are a good sign but not proof a name is clear. Trademark rights can exist with no social presence at all, and common-law rights come from actual commercial use — a regional business with an old website and no Instagram can still hold rights to the name. Check the federal register and the open web, not just whether @yourbrand is free.
How much does it cost to check if a business name is taken?
Checking it yourself is free but slow — RDAP for the domain, the USPTO trademark search, your state's Secretary of State search, plus Google and the social platforms, repeated for every candidate name. Brand Cleared runs all four checks across about 100 candidate names in 10 to 15 minutes for $149. A clearance opinion from a trademark attorney, when you have a finalist, typically runs several hundred to a few thousand dollars.
Related naming & trademark guides
- How to Do a Free USPTO Trademark Search (the Knockout Method)
- How to Name a Startup: A Practical 2026 Framework
- How to Check Domain, Trademark, and Social Handle Availability at Once
- Common-Law Trademark Rights, Explained (Why an Unregistered Name Can Still Be Taken)
- Trademark Classes (the Nice Classification), Explained for Founders
- Why a Business Name Generator Isn't Enough (the Clearance Gap)
Run yours.
Five agencies, ~100 candidates, the full clearance gauntlet.
About 10–15 minutes. Domains, USPTO federal knockout, App Store + Google Play, 7 social platforms, common-law SERP, brand + growth scoring, 4-panel expert audit. $149, one-time.
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