How to Check If a Brand Name Is Already Trademarked

Before you launch a product, name a business, or file a trademark application, you need to know whether someone else has already claimed that name. Here is how to check — and what the results actually mean.

What you are actually checking

The USPTO (United States Patent and Trademark Office) maintains a public database of all registered trademarks and pending applications. Checking this database tells you whether a name is already claimed — or whether someone is in the process of claiming it.

There are two things that can block you: an existing registration (someone already owns it) and a pending application (someone is trying to own it). Both matter.

Step 1: Use the USPTO TESS database

Go to tmsearch.uspto.gov and search for your brand name. Use the "Basic Word Mark Search" first. Search for your exact name, then variations (common misspellings, phonetic equivalents).

Look for results with status "LIVE" — those are the ones that matter. "DEAD" marks are expired or abandoned and generally cannot block you.

Step 2: Check product categories (Nice Classes)

Trademark protection is category-specific. "Apple" for computers and "Apple" for fruit stands are both legally fine because they are in different product categories. When reviewing results, look at the goods and services description.

If you find a similar mark, check whether its registered categories overlap with your business. A matching name in a completely different industry is usually not a problem. A matching name in your exact category is a serious concern.

Step 3: Look for phonetically similar names

Trademark law protects against names that are confusingly similar, not just identical. "Zynga" and "Zinga" could conflict. "Corsair" and "Corsaire" could conflict. Run searches for phonetic variants of your name too.

What to do with what you find

If you find a closely matching live mark in your product category, consult a trademark attorney before proceeding. The cost of a 30-minute attorney consultation is far less than a rebrand after you have already built an audience.

If you find nothing concerning, that is a good sign — but it is not a green light. New applications are filed every day. That is why ongoing monitoring matters as much as the initial search.