How to Check If a Domain Is Trademarked Before You Buy

Here's how this usually goes wrong. You find a great .com and pay for it. You build a site, order business cards, tell your friends. Then a letter shows up from a company that already owns the name. Now you're handing over the domain, or paying a lawyer, or both.

A trademark check takes about 15 minutes and costs nothing. Let me show you how it works.

Owning a domain doesn't mean you own the name

A domain is an address. It gives you no rights to the name itself. Trademark rights come from using a name in business, or from registering it. So if you buy a domain that matches someone else's brand, their rights come first, even though you paid for the domain fair and square.

The usual route for a trademark owner is a process called UDRP. Think of it as a quicker, cheaper alternative to court. The owner has to show three things: the domain is the same as, or too close to, their trademark; you have no good reason to hold it; and you registered or used it in bad faith. If they win, the domain moves to them and you lose what you paid.

Some of these complaints are weak, and domain owners do win them. You still spend weeks on it and usually pay a lawyer. Checking first is cheaper.

The 15-minute trademark check

Do these in order. Stop as soon as you find a real problem.

1. Google the name

Put the exact name in quotes, then add what you plan to do with it. For example: "yourname" software, "yourname" app, "yourname" agency. Look for companies, products and social accounts that already use it.

Then search LinkedIn for companies with the same name. Plenty of small businesses use a name for years without registering it. In many countries they can still have rights.

2. Search the USPTO database

The US trademark office runs a free search at tmsearch.uspto.gov. Some older guides still tell you to use TESS. That tool was shut down on November 30, 2023, and Trademark Search took its place.

Type the name exactly as written. Then try close versions: a plural, a different spelling, a name that sounds the same. Look at live marks first. A live mark means the owner has a registration or a pending application. Open each hit and read the owner's name and what the mark covers.

3. Check outside the US

If you'll sell in other countries, search there too. The WIPO Global Brand Database covers many countries in one place. If you work in Bangladesh, the local office is the DPDT.

4. Look at the domain's past

Paste the domain into the Wayback Machine and see what used to live there. A name that was once a real company's website is a warning sign, even if nobody registered a trademark.

How to read what you find

You'll end up in one of three places.

• Green. Nothing in Google, LinkedIn or the databases. Or only dead marks, with no business still using the name. That's a good sign. Keep going.
• Yellow. A live mark exists, but for a different kind of business. Or a few small companies share a common word. Slow down here. A different business area doesn't make a name automatically safe, because related products and services can still cause confusion.
• Red. A live mark for the same kind of business. A famous brand name. Or a well-known brand plus a word like "shop" or "support". Or a name that looks tied to a government or a country's national interest. Walk away.

Yellow is where most people get stuck. If you land there, don't guess. Ask a trademark lawyer, and bring your notes.

What this check can't do

It's a first filter, not a full clearance. It can miss names that sound alike, applications filed this week, and brands that never registered anywhere. It's also general information, not legal advice.

If you plan to build a business on the name, or the price would hurt to lose, pay a trademark attorney to look. Your search notes save them time, which saves you money.

There's another gap that no database covers. Imagine a domain, call it abcd.com, that looks like the name of a government body or something tied to a country's national security. No company has registered it as a trademark, so your USPTO search comes back clean. A government can still push hard for a name like that, and you could end up giving the domain up. A clean search result doesn't always mean a clean domain. That's why step 1 matters. Ask who else might care about this name, not just who registered it.

Where this fits in my own work

Trademark clearance is the first part of the DIOS workflow I use on every domain I list. A history audit and comps-based pricing sit alongside it. If you wonder why I care so much about this step, this page explains it.

Once a name passes the check, the next question is price. Here's how I price a domain with real sales data.

Quick answers

What replaced TESS?

USPTO Trademark Search at tmsearch.uspto.gov replaced it on November 30, 2023. It is free to use.

If I own the domain, am I safe from a trademark claim?

No. A domain gives you an address, not rights to the name. A trademark owner can still bring a complaint against you.

Is a domain safe if the trademark is in a different category?

Not automatically. Categories help organize registrations, but they don't draw the exact line for confusion. Related products or services can still cause trouble. When it's close, ask a lawyer.

Do I need a lawyer for every domain?

No. For a low-cost name, the check above is a fair first step. For anything expensive, or anything your business will rest on, pay for a lawyer's review.

This post is general information, not legal advice. Please read the disclaimer.