Last updated 14 June 2026.
Short version: a clearance search is the cheapest insurance in trademark law. Spend twenty minutes checking the register before you file and you avoid the most common reason applications die: a conflict with a mark that was already there. Here is how to do it properly, free.
What is a clearance search, and why does it matter so much?
A clearance search checks whether a name, or one confusingly close to it, is already registered or pending for related goods or services. It matters because the USPTO refuses applications that are likely to be confused with an earlier mark, and that refusal is the single most common way money and months get lost. The filing fee is not refundable, so a conflict you could have found in advance is a pure write-off.
How do I actually search the register?
Start broad, then narrow. Search the exact name, then obvious variants and phonetic equivalents such as Kwik for Quick or Lite for Light. Use our brand and owner search to scan marks and the companies behind them in one place, and confirm anything important on the official USPTO trademark search. You are not just looking for identical names. You are looking for anything close enough that an ordinary customer might mix the two up.
Why "close enough" is the part people get wrong
Trademark conflicts are about confusion, not copying. Two marks can look different on paper and still clash if they sound alike, mean the same thing, or sell to the same buyer. A soft drink called Zesta and one called Zessta are a problem. So is a name that translates to the same word in another language. When you search, think like a confused shopper, not a lawyer.
Search inside your class, and the classes next door
Protection is organised by NICE class, so a conflict usually has to be in the same or a related class to matter. Check the marks already filed in your class on our NICE class pages, then look at the neighbouring classes your buyers would associate with you. A clothing brand should look at Class 25, but also at retail services in Class 35.
What to do when you find something close
Do not panic, and do not assume you are blocked. Look at whether the other mark is live or dead, what goods it covers, and how similar the markets really are. A dead or abandoned mark may be open ground. A live mark in a different industry may coexist with yours. For anything genuinely close, this is the point to bring in a trademark attorney, because a professional opinion is far cheaper than a refused application or a dispute later.
Frequently asked questions
Do I need a clearance search if the USPTO database looks clear?
Yes. The register is the most important source, but rights can also come from earlier use that was never registered. A clear register lowers your risk a lot, but a wider check of business names and domains adds another layer of safety.
How much does a clearance search cost?
A basic knockout search on the register is free using WikiTrademarks and the USPTO system. A full legal clearance opinion from an attorney costs more, and is worth it for a name you plan to build a business on.
What happens if I skip the search and there is a conflict?
The USPTO can refuse your application on the ground that it is likely to be confused with an earlier mark. You lose the filing fee, the time, and sometimes the name itself. Searching first is how you avoid all three.
Can two similar trademarks ever coexist?
Yes, if the goods or services are different enough that buyers will not be confused. Identical names exist across unrelated industries all the time. The question is always whether the two markets overlap.
Ready to check a name? Run it through our trademark search now and see what is already on the register before you spend a cent on filing.