Business Name Search: How to Check if a Name Is Available

A proper business name search checks five places: your state's business entity registry, local DBA records, the federal trademark database, real-world use online, and domain and social handle availability. A name has to clear all five before it is safe to register, put on a sign, or print on your invoices. Checking only one, usually the state registry, is the most common reason small businesses are forced to rename later.

This guide walks through each check, explains what "available" actually means at each level, and covers what to do when your favorite name is already taken. It is general information, not legal advice; for a name that is central to a significant investment, a trademark attorney's clearance search is worth the cost.

Why one search is not enough

Different systems protect business names in different ways, and they do not talk to each other.

Where	What it protects	Scope	What it does NOT do
State entity registry	Your LLC or corporation's legal name	One state	Give trademark rights or block use in other states
DBA / assumed name filing	Records who trades under a name	County or state	Usually gives no exclusive rights at all
Federal trademark (USPTO)	Brand use for specific goods/services	Nationwide	Cover unrelated industries in most cases
Common-law use	Rights from actually using a name in commerce	Geographic area of use	Show up in any official database
Domain and handles	Your online address	Global	Give any legal rights to the name

So a name can be "available" with your Secretary of State yet still infringe a trademark, or be free of trademarks but have its .com held by someone else. You need the full picture.

Step 1: Search your state's business entity database

Every state runs an online business search, usually through the Secretary of State. Search for:

• The exact name without the designator (search "Blue Oak Design", not "Blue Oak Design LLC").
• Variations: plural and singular, with and without "and"/"&", spelled-out numbers versus digits.
• The distinctive word alone (just "Blue Oak") to see how crowded it is.

States generally require a new entity name to be distinguishable from names already on the record. Differences only in punctuation, a designator or small words like "the" often do not count. Each state also restricts certain words, such as bank, trust, insurance, university or engineer, that require approval from a regulator before you can use them.

If the name is clear and you are not ready to form your entity yet, most states let you reserve it for a fee. When you are ready, our guide on how to start an LLC covers the formation filing, and what a registered agent does explains one of the details you will need.

Step 2: Check DBA and assumed name records

Sole proprietors and partnerships often operate under a DBA, filed with a county clerk or the state depending on where you live. These are frequently stored in a separate database from LLCs and corporations. Search your county's fictitious business name records as well as the state's. A DBA rarely gives exclusive rights, but it tells you someone local is using the name. Our explainer on what a DBA is covers when you need to file one yourself.

Step 3: Run a trademark search with the USPTO

The US Patent and Trademark Office's online Trademark Search system lets you look up registered marks and pending applications for free. Search smartly:

1. Search the core word of your name, not just the full phrase.
2. Look for sound-alikes and spelling variants (Kleen and Clean, Lyte and Light).
3. Note the goods and services class each match covers. A conflict is most likely when the marks are similar and the goods or services are related.
4. Check the status: "live" registrations and pending applications matter most; "dead" records usually do not, though the owner may still use the name.

The legal test for trademark infringement is "likelihood of confusion." Delta Air Lines and Delta faucets coexist because no one confuses air travel with plumbing fixtures. But a "Blue Oak Design" web studio would face real risk if a "Blueoak Designs" agency already held a registration for design services.

Should you register a trademark?

If the name will carry real value, federal registration gives nationwide priority and makes it easier to stop copycats. Under the fee rules in effect since January 18, 2025, the USPTO charges a base fee of $350 per class, with surcharges for incomplete applications and custom descriptions, as summarized in this overview of the 2025 USPTO fee changes.

Step 4: Search for common-law use

In the US, businesses gain trademark rights simply by using a name in commerce, even without registering it. These rights are limited to the area where they operate, but they can still block you locally. Search:

• Google and Bing, in quotes, with and without your city.
• Google Maps and review sites in your service area.
• Marketplaces relevant to you (Etsy, Amazon, Upwork, app stores).
• Industry directories and professional association listings.
• Social platforms, where many small businesses exist before they ever register anything.

Step 5: Check domains and social handles

Look up the .com first, then sensible alternatives. If the exact match is taken, consider adding a descriptor (blueoakdesignstudio.com) or your location. Check handles on the two or three platforms your customers use. If you need help here, see how to buy a domain name, including what to do if someone already owns it.

Special cases: multi-state businesses and online-only brands

If your LLC or corporation will do business in more than one state, it may need to register (often called foreign qualification) in each additional state, and its name must be available there too. If it is not, many states let you register under an alternate or fictitious name in that state. Search every state where you expect to register before you commit, not just your home state.

Online-only businesses face a different risk: there is no geographic separation from similar names. A local bakery called Golden Hour in Oregon and another in Maine may coexist for years, but two online stores with the same name selling similar products nationwide are much more likely to collide. For online brands, give the federal trademark search and marketplace searches extra weight.

Finally, remember that a name search is a snapshot. Someone could file a similar name next week. Once you have chosen, file promptly and keep dated records showing when you first used the name, such as your first invoices, website launch and marketing materials, since first use in commerce matters for common-law rights.

Business name search checklist

Check	Where	Pass if...
State entity registry	Secretary of State business search	No identical or near-identical active entity
Restricted words	State naming rules	No regulated words, or approval obtained
DBA records	County clerk and state	No local business trading under the name
Federal trademarks	USPTO Trademark Search	No similar live mark for related goods/services
Common-law use	Web, maps, marketplaces	No similar business in your area or niche
Domain	Any registrar	Usable .com or acceptable alternative
Social handles	Key platforms	Consistent handle available

Worked example: checking "Harbor Pet Care"

Marcus wants to launch a dog-walking business in Tampa called Harbor Pet Care. His search (illustrative):

1. Florida entity search: no "Harbor Pet Care", but there is an active "Harbour Pet Care LLC". Since spelling variations like this are unlikely to be distinguishable, the state would probably reject his filing. Result: fail.
2. He tries "Harborline Pet Care". State search: clear.
3. USPTO: no live marks using "Harborline" for pet services. One dead mark for boat parts, unrelated. Result: pass.
4. Web search: no pet businesses using Harborline in Florida. Result: pass.
5. Domain: harborline.com is taken (parked), but harborlinepetcare.com is available for roughly the price of a standard .com. Result: acceptable.
6. Handles: @harborlinepets available on Instagram. Result: pass.

Total time: about an hour. Cost so far: nothing. Marcus then forms "Harborline Pet Care LLC", buys the domain, and sets up his invoice template with the new name.

What to do if the name is taken

• Assess the conflict. An inactive corporation in another state with an unrelated business is very different from an active competitor nearby.
• Add a distinctive element. A unique word usually works better than adding "Co." or a city name to an identical core.
• Do not misspell your way out. "Kwik Klean" next to "Quick Clean" in the same market is still confusing to customers.
• Consider buying it. Occasionally an owner of a dormant name or domain will sell. Get any transfer in writing.
• Go back to brainstorming. Our list of business name ideas and naming styles can restart the process quickly.

Common mistakes

• Searching only the exact name, not the core word and sound-alikes.
• Assuming an LLC filing equals trademark protection.
• Printing signs, cards and invoices before the checks are complete.
• Ignoring a cease-and-desist letter. If you receive one, get legal advice promptly.
• Forgetting that your legal name and brand name must line up on contracts and invoices. If you trade under a DBA, show both, for example "Lee Holdings LLC dba Harborline Pet Care", so clients pay the right entity. See how to invoice as an LLC for the details.

After the search: lock it in

Once a name clears every check, move quickly: file your entity or DBA, register the domain, claim your handles and, if appropriate, file a trademark application. Then use the name consistently everywhere: website, business cards, email signature, contracts and invoices.

With your name secured, create invoices that show it correctly using our free invoice generator: add your legal name, DBA and logo, and download a polished PDF invoice with no sign-up.