To check if a logo is trademarked, search the U.S. Patent and Trademark Office’s federal trademark database using design codes that describe your logo’s visual elements, then extend the search to state registries, unregistered logos already in use online, and international databases if you plan to sell abroad. The federal database at USPTO.gov is the starting point, but it only covers federally registered and pending marks. Skipping any of the other layers leaves blind spots that can surface later as cease-and-desist letters or infringement lawsuits, after you’ve already spent money on branding, packaging, and marketing.
Translate Your Logo Into Design Codes First
Before you type anything into a search tool, translate your logo’s visual elements into the standardized codes the databases use. The USPTO’s Design Search Code Manual assigns every graphic element a six-digit number in three parts: a two-digit category (broad, like “animals”), a two-digit division (narrower, like “cats, dogs, wolves”), and a two-digit section (very specific, like a particular breed or pose).1United States Patent and Trademark Office. Design Search Codes A logo featuring a stylized dog, for example, falls under division 03.01, which covers cats, dogs, wolves, foxes, bears, lions, and tigers.2United States Patent and Trademark Office. 03 Animals – Trademark Design Search Code Manual If the logo also has a geometric border, that’s a separate code.
You also need to identify the International Classes under the Nice Classification system that apply to your goods or services. Goods fall into Classes 1 through 34, and services fall into Classes 35 through 45.3United States Patent and Trademark Office. Nice Agreement Current Edition Version – General Remarks, Class Headings and Explanatory Notes A clothing brand focuses on Class 25; a software company looks at Class 9. Picking the right class keeps your results relevant instead of burying you in thousands of unrelated marks.
Don’t stop at your own class. The USPTO groups certain International Classes as “coordinated classes” because businesses in one category frequently sell in related ones. A clothing company in Class 25 might also sell jewelry (Class 14) or leather handbags (Class 18), so those classes are considered related. Searching the coordinated classes catches conflicts you’d otherwise miss.4United States Patent and Trademark Office. Using Coordinated Classes in Your Federal Trademark Search
Search the Federal Trademark Database
The USPTO’s Trademark Search system at tmsearch.uspto.gov is where you look for federally registered and pending marks.5United States Patent and Trademark Office. Search Our Trademark Database Enter the design codes you identified to find marks with similar visual elements. The system also lets you search by textual description of the design, so if your logo includes a word or phrase, run that as a separate query.1United States Patent and Trademark Office. Design Search Codes Combining design codes with your International Class narrows the results.
Watch the current search tool’s quirks. It’s more case-sensitive than the older TESS system it replaced, and small formatting mistakes in a search query can return wildly inaccurate results. If a search comes back with zero hits or an implausibly large number, adjust the capitalization and operator formatting before assuming what you’re seeing is real.
Read the Status of Any Match You Find
When results come back, look at the status of each mark. “Live” marks are active or pending and represent real potential conflicts. “Dead” marks are abandoned or cancelled, but they’re still worth reviewing. A mark cancelled because it became generic tells you something about the space; a mark abandoned after an opposition proceeding tells you someone fought to keep that space clear.
For anything that looks like a real conflict, dig deeper using the Trademark Status and Document Retrieval system (TSDR) at tsdr.uspto.gov.6United States Patent and Trademark Office. Trademark Status and Document Retrieval Enter the serial number or registration number from your search results, and TSDR pulls up the full prosecution history: every document filed, the current status, and the maintenance record.
The maintenance history matters. A federal registration doesn’t last forever without action from the owner. The owner has to file a declaration of continued use between the fifth and sixth anniversaries of registration, and then file both a declaration of use and a renewal application between the ninth and tenth anniversaries and every ten years after that. Missing either filing cancels the registration.7United States Patent and Trademark Office. Registration Maintenance/Renewal/Correction Forms A registration approaching one of these deadlines without a recent filing might be on its way out, though you shouldn’t count on it.
Under federal law, three consecutive years of nonuse creates a legal presumption that the mark has been abandoned.8Office of the Law Revision Counsel. 15 US Code 1127 – Construction and Definitions; Intent of Chapter A “live” registration doesn’t automatically mean the mark is in use. If the owner has stopped using the logo but hasn’t surrendered the registration, the mark may be vulnerable to cancellation. Proving abandonment takes more than a hunch, but spotting signs of nonuse in TSDR is a useful first step.
Check State Trademark Registries
The federal database only captures marks filed with the USPTO. Many businesses, especially smaller ones operating within a single state, register only with their state’s Secretary of State office.9United States Patent and Trademark Office. State Trademark Information Links Those marks don’t show up in a federal search.
Finding state registrations means visiting the state government website for each state where you plan to do business. Most states offer a searchable trademark or business database through the Secretary of State’s site. The tools are simpler than the federal system and usually only support text-based queries by business name or mark description, not design code searches. State registration fees generally run from about $10 to $70, so the barrier to entry is low and there are a lot of state-only registrations out there.
The practical issue is volume. If you’re operating in several states, you have to repeat the search in each one, and every state’s interface works a little differently. This step is worth the effort for anyone who isn’t going to seek federal registration right away, because a state-registered mark can still block your use inside that state’s borders.
Look for Unregistered (Common Law) Logos
Trademark rights in the United States don’t require any government registration. A business that uses a logo in commerce automatically acquires “common law” rights in the geographic area where it operates.10United States Patent and Trademark Office. Why Register Your Trademark A coffee brand using a particular logo only in California has enforceable rights in California, even if it never filed anything with the state or federal government. Those rights are real enough to support a lawsuit if you move into their territory with a confusingly similar logo.
The catch is that common law rights stay local. That California coffee brand couldn’t stop someone from using a similar logo in New York, assuming the New York user adopted the mark independently. But if either business tries to expand nationally, the overlap creates a conflict that can get expensive to sort out.
Finding these unregistered marks takes detective work. Start with a search engine query combining descriptive terms for your logo’s visual elements and your industry keywords. Reverse image search tools like Google Lens and TinEye are useful here; upload your logo and see if visually similar graphics appear on other businesses’ sites. Scan social media platforms, industry directories, and online marketplaces where small businesses display their branding. None of these sources are organized like a legal database, so this phase takes patience.
Search International Databases If You’ll Sell Abroad
If you plan to sell products or services outside the United States, check whether your logo conflicts with marks registered in those countries. The World Intellectual Property Organization (WIPO) maintains the Global Brand Database, which searches trademarks across dozens of participating countries from a single interface.11World Intellectual Property Organization. Global Brand Database WIPO also provides a Vienna Classification Assistant that suggests classification codes for the figurative elements of your logo, similar to how the USPTO’s design search codes work domestically.
Focus your international searches on the specific countries where you actually intend to do business. The database lets you filter by territory, application status, and filing date. International clearance is especially important in markets with first-to-file systems, common in much of Asia and parts of Europe, where the first person to register a mark owns it regardless of who used it first.
Decide Whether a Similar Logo Is Actually a Conflict
Finding a logo that looks somewhat like yours doesn’t automatically mean you’re blocked. The legal test is whether consumers are likely to confuse the two marks, and courts weigh several factors: how similar the marks look and feel, how closely related the goods or services are, the sales channels each brand uses, whether buyers make careful or impulse purchases, and how well-known the existing mark is. No single factor is decisive.
The strength of the existing mark heavily shapes the analysis. An invented word or a completely arbitrary logo (think the Apple logo on computers) gets the widest protection, because it’s highly distinctive and any similar mark in a related field will raise flags. A logo that merely describes the product it represents gets much narrower protection and can only block marks that are nearly identical. If the mark you found is descriptive or weak, the similarity threshold for infringement is higher, which can work in your favor.
This is where a self-directed search hits its limit. You can spot an identical logo easily enough. Judging whether a somewhat-similar logo in a related industry crosses the line into likely confusion takes legal judgment that no database can supply on its own.
What to Do If You Find a Potential Conflict
Your response depends on how close the conflict is and what the status of the other mark looks like.
- If the existing mark is visually similar, covers related goods or services, and is actively maintained, the safest move is to redesign. Fighting a live, enforced registration is expensive and unlikely to succeed.
- If the mark appears to have gone unused for three or more consecutive years, you may have an abandonment argument. Three years of nonuse creates a legal presumption of abandonment, but the owner can rebut that presumption by showing intent to resume use. Proceeding without legal advice is risky.8Office of the Law Revision Counsel. 15 US Code 1127 – Construction and Definitions; Intent of Chapter
- If the similar mark sits in a genuinely unrelated industry, two logos can sometimes coexist. Owners occasionally enter coexistence agreements that spell out where each party can operate and how each will minimize confusion. The USPTO will consider these agreements during examination but can still refuse a mark if consumer confusion remains likely.
A conflict in your results is the point where a trademark attorney earns their fee. The cost of a legal opinion at this stage is a fraction of what rebranding costs after launch.
When a Self-Directed Search Isn’t Enough
Running your own searches through the USPTO database and a few search engines will catch obvious conflicts. Trademark attorneys sometimes call this a “knockout search” because its job is to eliminate names and logos with clear existing registrations. What it won’t do is give you confidence that subtler conflicts don’t exist.
A professional clearance search goes further. It covers pending applications, abandoned marks that could be revived, common law uses across unindexed sources, domain registrations, and the litigation history of trademark owners who are known to enforce aggressively. The legal analysis that accompanies a professional search also evaluates likelihood of confusion across coordinated classes, which a database query alone can’t do. If your logo is going on packaging, a storefront, or a national ad buy, the additional cost is small compared to the price of finding a conflict later.