Namedrop — Business Naming Guide
Trademark Search Guide: USPTO & EUIPO Explained
Before you commit to a business name, searching for existing trademarks isn't optional — it's the step that prevents you from building a brand on legally shaky ground. A cease-and-desist letter after you've printed business cards, launched a website, and told all your customers is a painful and expensive problem to fix.
The good news: the two most important trademark databases in the world — USPTO for the US and EUIPO for the EU — are free to search. You don't need a lawyer to run an initial check. You do need to understand what you're looking at.
This guide explains how to search both databases, how to read the results, and what to do when you find something. If you want name ideas with trademark checks already built in for every result, Name my business for $9 →
Why trademark search matters before you name your business
Domain availability and trademark availability are completely separate. A domain name is a technical web address registered through a commercial registrar — first come, first served. A trademark is a legal right to use a name, logo, or phrase in commerce within a specific industry and jurisdiction. Registering a domain does not give you trademark rights, and holding a trademark does not automatically give you the matching domain.
The risk is this: if you use a name that someone else has trademarked in your industry, they can send a cease-and-desist requiring you to stop using it. In serious cases, this means renaming your business, redesigning your brand, and notifying customers — all at your own cost. The trademark holder doesn't need to prove you knew about their registration; priority of use is what matters.
Running a trademark search before you commit takes 15–20 minutes and costs nothing. Skipping it can cost thousands. Namedrop automatically checks USPTO for every name it generates and shows conflict status, so the check is built into the naming process rather than an afterthought.
How to search USPTO for US trademarks
The USPTO (United States Patent and Trademark Office) maintains TESS — the Trademark Electronic Search System — now accessible at tmsearch.uspto.gov. Here's how to use it effectively.
Step 1: Go to tmsearch.uspto.gov and enter your name
Enter your business name in the search field. Start with an exact match search. USPTO's search is case-insensitive and will return all registrations containing your search term. Look at the list of results — each entry shows the mark name, owner, status (live or dead), and filing date.
Step 2: Filter for live registrations only
Dead or abandoned trademarks (ones that were filed but rejected, expired, or surrendered) don't block new registrations through the formal system. Focus on marks with a "Live" status. Dead marks are worth noting — the owner may still have common law rights from prior use — but a live registration is the more immediate concern.
Step 3: Check the Nice classification
Trademarks are registered by industry category using Nice classifications — 45 numbered classes covering different types of goods and services. Class 42 covers software and technology. Class 35 covers business services and retail. Class 25 covers clothing. A live trademark in your exact class is a serious conflict. A live trademark in an unrelated class (e.g., a "Bluewave" trademark in Class 10 medical devices when you're building a music app) is less likely to be a problem, but still worth flagging to an attorney.
Step 4: Search for similar-sounding names
Trademark law protects against "confusingly similar" marks, not just exact matches. If your name sounds like, looks like, or has similar meaning to a registered trademark in your industry, that can still be a conflict. Search for phonetic variants and close spelling alternatives of your name — especially if it's a coined word or a unique construction.
How to search EUIPO for EU trademarks
The EUIPO (European Union Intellectual Property Office) manages EU trade marks (EUTMs) that cover all 27 EU member states in a single registration. Here's how to search it.
Go to euipo.europa.eu/eSearch and search by name
EUIPO's eSearch tool lets you search by trademark name, owner, or Nice class. Enter your business name and select "Trade mark name" as the search field. The results show the mark, its status, the owner, filing date, and the classes registered.
Understand the scope of an EUTM
An EU trade mark registered at EUIPO is valid across all EU member states simultaneously. That means a single EUIPO registration by a competitor in Germany applies equally in France, Spain, Italy, and every other EU country. If you're building a business that will operate in any EU country, searching EUIPO is not optional — a registration you miss there can block you across the entire bloc.
Check national registers too for EU businesses
EUIPO covers EU-wide registrations, but businesses can also register trademarks nationally in individual EU countries. If you're operating primarily in one country (e.g., Germany), search that country's national trademark register (DPMA for Germany, INPI for France, IPO for the UK post-Brexit) in addition to EUIPO. National registrations aren't visible in EUIPO's eSearch.
How to read trademark search results and what to do next
No results — proceed with caution
A search with no live results in your industry is a good sign. It significantly reduces (but does not eliminate) trademark risk. Common law trademark rights can exist from prior use without registration, so even a clean database search isn't a legal guarantee. Record your search date and results, and consider a professional clearance opinion before significant investment.
Results in a different industry — lower risk
A live trademark in an unrelated Nice class (e.g., the same name registered for agricultural equipment when you're building a software tool) is generally lower risk. Trademark conflicts typically require that the goods or services be related enough to cause consumer confusion. Still worth noting and flagging to an attorney, but not an automatic block.
Results in your industry — serious conflict
A live trademark in your exact Nice class is a serious conflict. You should treat this as a likely block and either choose a different name or consult a trademark attorney immediately before proceeding. Don't invest further in the name until you have professional guidance.
Similar-sounding results — needs attorney review
If you find a name that sounds similar to yours in the same industry, the risk depends on how similar and how established the mark is. This is the hardest category to evaluate yourself and the most important case for getting an attorney's clearance opinion. The cost of an opinion is far less than the cost of a rebrand.
How Namedrop makes trademark checking part of the naming process
The typical founder workflow is: generate names, get excited about one, check the domain, register it — and then remember to check trademarks days later, after attachment has already formed. By then, abandoning a name feels like a loss.
Namedrop restructures this. Every name in your results includes an automatic USPTO trademark check with conflict status shown instantly — no searching or pasting required. Each result also links directly to EUIPO's pre-filled search page for EU verification.
That proximity matters. When trademark search is built into the same view as the name and its domain availability, you evaluate names holistically before you commit — not after. You see the full picture upfront: domain status, social handles, and USPTO conflict status and an EUIPO search link all in one place.
Frequently asked questions
What is the difference between USPTO and EUIPO?+
USPTO (United States Patent and Trademark Office) handles trademark registrations in the United States. EUIPO (European Union Intellectual Property Office) handles EU-wide trademark registrations covering all member states. They are independent systems — a US trademark does not protect your name in the EU, and vice versa. If you operate in both markets, you need to search both.
Is a trademark search on USPTO free?+
Yes. The USPTO trademark database (tmsearch.uspto.gov) is publicly accessible and free to search. EUIPO's eSearch database is also free. Hiring a trademark attorney to conduct a comprehensive search and provide a clearance opinion costs money, but the initial self-search on both platforms costs nothing.
What are Nice classifications in trademark search?+
Nice classifications are 45 international categories that group goods and services for trademark registration purposes. Class 42 covers software and technology. Class 35 covers business services. Class 25 covers clothing. A trademark registered in one class generally does not block use in unrelated classes — so a conflict in your exact category is more serious than one in a different industry.
What does it mean if a trademark is 'dead' or 'abandoned'?+
A dead or abandoned trademark means the registration is no longer active — it was either never approved, expired, or voluntarily surrendered. Dead trademarks generally don't block new registrations, but the owner may still have common law trademark rights from prior use. A dead filing is not the same as a live conflict, but worth noting.
Can I use a name if the trademark search shows no results?+
A clean search is a good sign but not a guarantee. Trademark protection can also arise from common law use — a business using a name commercially for years may have rights even without a registered trademark. A clean database search reduces your risk significantly, but a trademark attorney's clearance opinion is the only professional assessment.
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