How to Use the USPTO Trademark Search (And Why It Is Not Enough on Its Own)

What Is the USPTO Trademark Search? (Formerly TESS)

The USPTO trademark search is the free public tool for searching every trademark registered or applied for at the U.S. Patent and Trademark Office. It now runs on a cloud-based system called Trademark Search, found at tmsearch.uspto.gov.

If you have seen references to TESS, that is the old system, and any guide still describing it is out of date.

From TESS to the New Trademark Search System

The USPTO retired the Trademark Electronic Search System (TESS) on November 30, 2023, and replaced it with the current platform (USPTO, 2023). The TESS trademark search had run since 2000 and required strict Boolean syntax to navigate it.

The replacement adds a simple search box for quick lookups and an expert mode for structured queries. The database itself is unchanged. Only the tool is new, so the limits described below apply to both eras.

What the USPTO Trademark Database Actually Contains

The database contains federal trademark applications and registrations only.

That includes live registrations, pending applications, and dead records, meaning abandoned applications and cancelled or expired registrations. Dead records still matter, because a mark whose registration lapsed may remain in use with enforceable common law rights. What the database has never contained is anything outside the federal register, which is where most surprises come from. If you’d like to learn more, you can in our guide how long does a trademark last, explaining how registrations lapse.

How to Use the USPTO to do a U.S. Full Availability Trademark Search: A Basic Walkthrough

The trademark search USPTO offers is free, and using it effectively takes four steps.

Step 1. Access the Trademark Search System

Start by going to tmsearch.uspto.gov.

The default view is a single search field, and expert mode supports field tags and Boolean operators for narrower queries, such as limiting results to specific classes of goods or services. Anyone learning how to use USPTO trademark search tools starts here, and no account is needed.

Step 2. Search Your Mark and Close Variants

Search the exact name first, then variants. That means plurals, alternate spellings, phonetic equivalents such as “Kwik” for “Quick,” hyphenated forms, and translations. For a logo, the USPTO assigns design search codes that can be searched separately. Most self-searches stop at the exact name, which is exactly where they fail. Knowing how to do a trademark search means searching what an examiner would consider similar, not just what you typed.

Step 3. Review the Results Closely

A result does not need to be identical to block your mark. Read each hit for three things.

1. How similar it looks and sounds to your mark
2. How related the goods or services are
3. Whether the record is live or dead. Live marks in related classes are the danger zone even when the spelling differs.

Step 4. Understand What You Are Not Seeing

A clean result list is not a green light. The most common sources of dispute, unregistered marks in active commercial use, never appear in the federal database. The USPTO itself advises that a comprehensive clearance search covers its database, state trademark databases, and the internet (USPTO, Why search for similar trademarks). That gap is the subject of the next section.

Why the USPTO Trademark Search Is Not Enough: What It Cannot Find

The trademark search USPTO provides covers the federal register and nothing else. Legally protected marks exist entirely outside that database, and similar marks inside it are missed by exact-name queries. The comparison below shows what the free search covers against what a professional trademark clearance search covers.

Source	USPTO Trademark Search	Professional clearance search
Federal registered trademarks (live)	Yes.	Yes.
Federal pending applications	Yes.	Yes.
State trademark registrations (50 states)	No.	Yes.
Common law (unregistered) trademarks	No.	Yes. Business names, domains, and commercial use.
Trade names and DBA registrations	No.	Yes.
Phonetically or visually similar marks	Partial. Manual variant and design-code searches only.	Yes. Systematic similarity analysis.
International marks with U.S. effect	Limited.	Yes.
Likelihood-of-confusion legal analysis	No. It is a search tool, not a legal opinion.	Yes. Attorney analysis included.

Common Law Trademarks, the Most Overlooked Risk

A common law trademark is an unregistered mark that earns enforceable rights simply through use in commerce. Those rights are real, they are limited to where the mark is used and known, and they are completely invisible in the USPTO database.

A common law trademark search checks business directories, state business filings, domain registrations, social media, and industry sources. An earlier local user can block your use in their territory even after your federal registration issues, which makes this the most common blind spot in do-it-yourself clearance.

State Trademark Registrations

Each U.S. state maintains its own trademark register, separate from the USPTO. State trademark registration protects a mark within that state, and none of those records appear in a federal search. If your growth plan targets specific markets, a state-registered mark in one of them is a conflict a federal-only search will never surface.

Three Things a Professional U.S. Full Availability Trademark Search Includes

A professional trademark clearance search combines comprehensive sources with legal judgment. The search half gathers everything that could conflict. The analysis half tells you what it means, and that second half is what separates clearance from a database lookup.

1. The Scope of a Proper Clearance Search

The free USPTO tool checks one database. A proper clearance search checks every place conflicting trademark rights can come from, then analyzes what it finds.

Where it looks:

• Federal register: Live registrations and pending applications at the USPTO, the same ground the free search covers.
• All 50 state registers: Every state maintains its own trademark register, separate from the USPTO. None of those records appear in a federal search.
• Common law sources: Unregistered marks in active commercial use: business directories, state filings, domains, social media, and industry sources.
• International filings: Foreign registrations and Madrid Protocol filings that can reach into the U.S. market.

How it searches: variants, not just exact spellings

Variant type	What it catches
Phonetic	Marks that sound alike, such as “Kwik” and “Quick.”
Visual	Marks that look alike in spelling or presentation.
Translation	Foreign-language equivalents with the same meaning.
Design elements	For logos, systematic searching by design code, not words.

If you are still deciding whether to file at all, start with figuring out if you should trademark your business name.

2. The Attorney’s Opinion on the Legitimacy of Your Application

Your attorney should be giving you answers to two questions the raw search results cannot.

1. First, is the USPTO likely to approve your application? An examining attorney will refuse any mark that is confusingly similar to a registered or pending one, and the opinion applies that same likelihood-of-confusion test, a multi-factor analysis of mark similarity, relatedness of the goods or services, and trade channels (In re E.I. du Pont de Nemours & Co., 1973).
2. Second, could an existing user challenge you even after registration issues? That covers the common law and state-level rights no federal search reveals. A trademark lawyer’s written opinion turns the search into a decision. File, adjust the mark, or rebrand, before you spend non-refundable filing fees and marketing dollars.

3. What Determines the Cost of a Trademark Search

The trademark search cost depends on scope. The USPTO database itself is free. A professional clearance search is priced by how many sources it covers, whether the mark includes a design, how many classes of goods or services are involved, and whether international sources are included. The government’s filing fees for the application itself are published on uspto.gov. Weigh the cost for trademark search work against the alternative, which is discovering a conflict through a refusal or a demand letter after the brand is already in the market.

U.S. Full Availability Trademark Search With The Schenk Law Firm

A USPTO search tells you what is on the federal register. A U.S. Full Availability Trademark Search tells you whether your mark is actually safe to use and register. David Lizerbram leads the Trademarks practice at The Schenk Law Firm and has filed, prosecuted, and managed more than 850 trademark filings with the USPTO.

As part of the firm’s Business Advisory & Transactions work, he provides comprehensive clearance with a written attorney analysis before you file. Speak with a trademark attorney today. Request a consultation or call (858) 424-4444.

FAQs

What is the USPTO trademark search?

The USPTO trademark search (known as a U.S. Full Availability Trademark Search at The Schenk Law Firm) is the free public database of all federal trademark applications and registrations, available through the Trademark Search system at tmsearch.uspto.gov. It shows what is on the federal register. It does not show state registrations or unregistered common law marks.

Is the USPTO trademark search free?

Yes. The search tool is free to use with no account required. Fees only apply when you file an application, and the current amounts are published on uspto.gov.

What is the TESS trademark search?

TESS, the Trademark Electronic Search System, was the USPTO’s search tool from 2000 until November 30, 2023, when the agency retired it. The USPTO TESS trademark search has been replaced by the current Trademark Search system at tmsearch.uspto.gov, which searches the same federal database with a modern interface.

How do I search for a trademark on the USPTO?

Go to tmsearch.uspto.gov, enter your mark, and review the results. Then repeat with variants. Plurals, phonetic spellings, translations, and, for logos, design codes. That is how to search USPTO for trademarks at the most basic level, and the legal standard is similarity, not identity, so variants matter.

What does the USPTO trademark search miss?

It misses every mark that is not on the federal register. That includes common law trademarks created through use, all 50 state trademark registers, trade names and DBA filings, and most international marks. It also misses similar-but-not-identical marks unless you manually search every variant.

What is a trademark clearance search?

A trademark clearance search is a comprehensive availability investigation covering federal, state, common law, and international sources, ending with an attorney’s likelihood-of-confusion analysis. It answers the question a database cannot, which is whether the mark is safe to adopt, use, and register.

How much does a trademark clearance search cost?

Pricing depends on the scope of sources searched, whether the mark includes a design, and the number of classes involved, so ask for a quote based on your mark. The relevant comparison is the cost of rebranding or defending a dispute after a conflict surfaces.

Can I just use the USPTO search and file myself?

You can. The USPTO accepts applications filed without an attorney from U.S.-based applicants. The risk is that a self-conducted search only covers the federal register and only finds what you thought to type. Applications regularly fail on conflicts a clearance search would have flagged, and filing fees are not refunded when they do. A trademark lawyer closes both gaps before money is spent.

What is a common law trademark search?

A common law trademark search looks for unregistered marks that hold enforceable rights through commercial use. It covers sources like state business filings, trade directories, domain names, social media, and industry publications. These marks never appear in the USPTO database, yet they are among the most common sources of real-world trademark disputes.

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