How to Check If a Name Is Trademarked (USPTO Search, Explained)

To check if a name is trademarked, search the USPTO's federal trademark database for live registrations and pending applications that are confusingly similar to your name — not just exact matches — in the classes of goods and services where you plan to operate.

That one sentence contains the three ideas that trip up almost every founder: similar, not identical; live, not just registered; and your classes, not all classes. Miss any of them and you can walk away from a search feeling safe when you aren't — or abandon a perfectly usable name that never actually conflicted.

Here's how to do it properly, and then how to do it fast.

Why "no exact match" doesn't mean you're clear

Trademark law protects consumers from confusion, not companies from copycats. The legal test is likelihood of confusion: would an ordinary customer plausibly mix up your brand with an existing one? That means a registration can block your name even when the spelling is different.

Names conflict when they're similar in:

• Sound — Kwixly vs. Quickly
• Appearance — Lyfte vs. Lyft
• Meaning — Sunburst vs. Solar Flare can conflict if they sell the same thing
• Commercial impression — the overall vibe a customer takes away

So a search for your exact name is the beginning of a trademark check, not the end of one.

Step 1: Search the USPTO trademark database

The USPTO's free search tool lives at tmsearch.uspto.gov. Start with your exact name, then widen:

1. Exact match first. Search the name as one word and as separate words.
2. Phonetic and spelling variants. Swap letters that sound alike (C/K, F/PH, X/KS), drop or double vowels, try the "startup misspelling" versions of your name.
3. Root words. If your name is a compound or blend, search the distinctive part alone. If you're screening BrandScreen, you'd want to see what exists around both "brand" and "screen" in your categories.

Step 2: Filter for what actually matters

Every result has a status. The two that matter:

• Live — an active registration or pending application. These can block you.
• Dead — abandoned, cancelled, or expired. Usually not a barrier, with one caveat: a recently dead mark can signal a company that still uses the name in commerce and holds common-law rights (more on that below).

Then look at the class. Every trademark is registered in one or more of 45 international classes of goods and services — software is mostly Class 9 and 42, clothing is Class 25, restaurants are Class 43, and so on. A live mark identical to your name in an unrelated class is often not a conflict at all: this is how Delta the airline, Delta the faucet company, and Delta the dental insurer coexist.

The judgment call: "related" is broader than "identical." Classes 9 and 42 overlap constantly for software companies. A court asks whether customers would assume the two products come from the same company — not whether the class numbers match.

Step 3: Check beyond the federal register

A clean USPTO search is necessary but not sufficient, because trademark rights in the U.S. don't require registration:

• Common-law rights. A business that's been using a name in commerce has enforceable rights in its geographic area even with zero filings. A web search for the name plus your industry is the crude check here.
• State registrations. Each state runs its own trademark register, and businesses register entity names with the Secretary of State. A name that's clear federally can still collide with a registered entity in the state where you're incorporating.
• Pending applications. These show in the USPTO database but haven't been examined yet — a pending application filed before yours generally wins the priority fight.

The mistakes that actually get founders sued

1. Searching only the exact name. Most conflicts come from similar marks, not identical ones.
2. Ignoring the class overlap question. "There's a trademark but it's a furniture company" is only a safe conclusion if you'll never plausibly be confused with furniture.
3. Treating a dead mark as a green light without checking whether the company behind it still operates.
4. Checking the trademark but not the entity registers — then discovering at incorporation time that the name is taken in Delaware.
5. Doing the search once, at naming time, and never again. Applications are filed daily; a name that was clear in January can have a pending conflict by June.

The fast way: check everything in one pass

A thorough manual check means the USPTO database, phonetic variants, state entity registers, domain availability, social handles, and a competitive web search — realistically an afternoon per name, repeated for every candidate on your shortlist.

This is the problem BrandScreen was built for. Enter a name and get a single 0–100 Brand Score covering federal trademark conflicts (including similarity, not just exact matches), business entity registrations, domain availability, social handles, and search competition — in about a minute instead of an afternoon. The free tier shows you the headline result; the full report breaks down every conflict it found so you can make the judgment calls yourself.

Run your shortlist through a screen before you fall in love with a name. The most expensive trademark problem is the one you discover after the logo, the domain, and the launch.

Check your name free →

Once you've confirmed a name is clear, decide whether you need to trademark your business name to protect it.

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This article is general information, not legal advice. For a high-stakes filing, have a trademark attorney run a clearance search — a screening tool tells you when to walk away cheaply; an attorney tells you when it's safe to commit.