To check whether a trademark is available, search the USPTO’s free federal database for identical and confusingly similar marks, then sweep state trademark registries, search engines, social media, and domain registries for unregistered marks already in use on related goods or services. Federal registration is only part of the picture in the United States: trademark rights arise from actual use, so a business that never filed anything can still block yours. A thorough check runs all of these sources before you commit to a name.
Pin Down Your Mark and Your Goods First
Before you type anything into a search box, write down the exact spelling of the word mark, or, for a logo, both the literal elements (any words or letters) and the design elements (shapes, animals, objects). Vagueness at this stage creates blind spots later.
Then identify what the mark will sell. Trademark protection is industry-specific, which is why “Delta” coexists as an airline, a faucet brand, and a dental insurance company. Every product or service falls into one of 45 International Classes under the Nice Classification system: Classes 1 through 34 cover goods, and Classes 35 through 45 cover services.1United States Patent and Trademark Office. Nice Agreement Current Edition Version – General Remarks, Class Headings and Explanatory Notes A clothing company would search Class 25; a software company would look at Class 9 or Class 42. The USPTO’s Trademark ID Manual lists pre-approved descriptions and helps you land on the right class.
Searching the USPTO Federal Database
The USPTO’s trademark search tool, which replaced the older TESS system in late 2023, is free and open to the public.2United States Patent and Trademark Office. Announcements – Trademark Search It contains every active, pending, and abandoned federal trademark registration, and you can reach it directly from the USPTO’s trademark search page.3United States Patent and Trademark Office. Search Our Trademark Database
Word Marks
Type your proposed name into the search field, but don’t stop at an exact match. The system supports boolean operators and wildcard characters so you can catch phonetic equivalents and alternate spellings. If your proposed mark is “Kleer,” also search “Clear,” “Cleer,” and other variants a consumer might confuse with yours. A mark doesn’t have to be spelled identically to create a conflict. It just needs to sound similar or carry the same meaning when used on related goods.
Each result shows the mark’s status (live or dead), the filing date, the owner, and the goods or services it covers. A “dead” or abandoned mark doesn’t automatically clear the way. The former owner may still hold common law rights from continued use, or could revive the registration under certain circumstances. Focus your analysis on live marks in the same or related classes, but investigate any dead mark that looks nearly identical to yours before you rule it out.
Logos and Design Elements
If your mark includes a logo or graphic element, search using design codes. The USPTO assigns six-digit codes that classify visual elements into categories, divisions, and sections. The first two digits represent a broad category (like animals or food), the middle two narrow it down (like birds or baked goods), and the final two get specific (like eagles or croissants).4United States Patent and Trademark Office. Design Search Codes The Trademark Design Search Code Manual lists every available code and lets you browse or search by keyword.5United States Patent and Trademark Office. Trademark Design Search Code Manual Broader searches come from omitting the last digits: searching “02.01” instead of “02.01.03” returns everything in that division rather than a single section.
State Trademark Registries
The federal database doesn’t capture everything. Many small businesses register only at the state level, typically through the Secretary of State’s office. Those registrations are limited to the borders of that state, but they can still block your use within that market. If you plan to operate in specific states, check each one’s trademark or business name registry through its Secretary of State website.
A state-registered mark that predates yours could have priority within that state even if you later obtain federal registration. The USPTO recommends checking state registries as part of a comprehensive clearance search.6United States Patent and Trademark Office. Comprehensive Clearance Search for Similar Trademarks
Common Law and Online Use
This is where most do-it-yourself searches fall short. Trademark rights in the United States don’t require registration. They arise from actual use in commerce. Someone selling handmade candles as “Solara” at farmers markets and through an Etsy shop may never file an application, but they still own common law rights to that name for candles in the areas where they sell. Launch a candle brand with the same name a year later and they have priority.
The USPTO itself recommends searching the internet for third-party references to your proposed mark used with related goods or services.6United States Patent and Trademark Office. Comprehensive Clearance Search for Similar Trademarks In practice, that means running the name through multiple search engines, checking social media platforms, scanning business directories, and looking at industry-specific registries. The USPTO also suggests checking domain name registries through ICANN, international trademark databases like Madrid Monitor and the WIPO Global Brand Database, and the Trademark Official Gazette, a weekly USPTO publication listing marks that received preliminary approval.
Domain names deserve extra attention. Someone actively using a domain that matches your proposed mark to sell related goods could claim prior common law rights. Beyond the legal priority question, launching a brand when the matching .com is already occupied creates practical marketing problems you’ll live with for years.
How to Tell Whether a Hit Is a Real Conflict
Finding an identical mark in an unrelated industry doesn’t necessarily kill your plans. Finding a somewhat similar mark in your exact industry might. The legal standard is “likelihood of confusion,” meaning whether an average consumer encountering both marks would mistakenly believe the goods or services come from the same source.7United States Patent and Trademark Office. Likelihood of Confusion It’s the most common reason the USPTO refuses registration.8Office of the Law Revision Counsel. United States Code Title 15 – Section 1052
The Factors That Matter Most
Courts and the USPTO evaluate likelihood of confusion using a multi-factor test originally established in In re E.I. du Pont de Nemours & Co. Not every factor matters equally in every case, but these carry the most weight in practice:
- Similarity of the marks in appearance, sound, meaning, and overall commercial impression. “Blu-Ray” and “Blue Rain” look different on paper but sound dangerously close.
- Relatedness of the goods or services. The closer the products, the higher the risk. Identical marks on unrelated goods, like Delta Airlines and Delta Faucets, can coexist; similar marks on overlapping products cannot.
- Trade channels. Products sold side by side on the same shelf or the same platform face more scrutiny.
- Consumer sophistication. Buyers spending $50,000 on industrial equipment pay closer attention than someone grabbing a $3 snack, and less sophisticated buyers are more easily confused.
- Fame of the existing mark. A well-known mark gets broader protection. Trying to register anything resembling “Nike” for athletic products is a nonstarter, even in a subcategory Nike hasn’t entered.
The remaining factors address things like whether actual confusion has already occurred, how long the marks have coexisted without confusion, and the variety of goods each mark covers. You don’t have to work through all thirteen. The top five give you a realistic sense of whether your proposed mark is likely to clear.
Where Your Mark Sits on the Distinctiveness Spectrum
The strength of a trademark falls along a spectrum, and where your mark lands affects both how protectable it is and how easily it might conflict with others. From strongest to weakest:
- Fanciful marks are completely invented words with no prior meaning, like Xerox or Kodak. They get the broadest protection.
- Arbitrary marks are real words used in an unrelated way, like Apple for computers. Strong protection, because the word has nothing to do with the product.
- Suggestive marks hint at a quality of the product but require some imagination to connect, like Netflix. Protectable without proving consumer recognition.
- Descriptive marks directly describe the product or its features. They become protectable only after extensive use builds consumer recognition, called “secondary meaning,” and they receive the narrowest protection.
- Generic terms are the common name of the product itself, like “Smartphone” or “Email.” They can never function as trademarks.
Stronger marks face fewer conflicts during the search phase because they’re inherently unique. Descriptive marks face an uphill battle both in clearing the search and in getting through registration. If your proposed mark falls on the descriptive end, expect more potential conflicts.
When to Pay for a Professional Search
There’s a meaningful difference between a quick knockout search and a full clearance search, and most business owners only do the first. A knockout search is what you do during brainstorming: run your top name candidates through the USPTO database and a search engine to eliminate obvious conflicts. It takes an hour and costs nothing. Useful for crossing names off a list. Not sufficient for a final decision.
A professional clearance search goes deeper. It covers federal and state registrations, common law use, domain names, pending applications, and abandoned marks that could be revived. More importantly, it includes an attorney’s legal opinion on whether each potential conflict actually poses a risk under the likelihood-of-confusion factors. The USPTO itself recommends hiring a trademark attorney before filing, noting that doing so “could help you avoid costly legal problems with your mark” and that the examining attorney assigned to your application “cannot give you any legal advice.”9United States Patent and Trademark Office. Legal Services for the Trademark Registration Process
Professional trademark searches through a law firm typically run $500 to $2,000 or more depending on scope. That can look steep for something you can technically do for free, until you weigh the alternative: a filing fee wasted on an application that gets refused, or a cease-and-desist letter after you’ve printed packaging, built a website, and started advertising.
What to Do If You Find a Conflict
A potential conflict doesn’t always mean starting over. Your options depend on how close it really is.
If the conflict is an identical mark in your exact industry, walk away. No amount of legal maneuvering will overcome that. If the conflict involves a somewhat similar mark, or one used in a related but distinct product category, there’s room to work with. Modifying your mark by changing a word, adding a distinctive design element, or narrowing your goods or services can create enough separation to avoid confusion.
In some cases, you can negotiate a coexistence agreement with the existing mark holder. These agreements spell out how both parties can use their similar marks without creating consumer confusion, often by dividing geographic territories, limiting product categories, or specifying different trade channels. A well-drafted coexistence agreement can even be submitted to the USPTO as evidence that confusion is unlikely during the application process.