To find out if something is trademarked, start with the free federal Trademark Search at tmsearch.uspto.gov, then extend the check to state registrations, unregistered common law uses, and international databases. A federal search alone misses real conflicts: state filings, marks built through actual business use, and foreign registrations can all block you even when the USPTO database comes back clean. A thorough clearance search covers every layer before you commit money to branding, packaging, or marketing.
Prepare Before You Search
Write down every version of the name or slogan you’re considering, including alternate spellings, abbreviations, and phonetic variations. Sound-alike marks matter as much as identical ones. There is no single correct pronunciation of a trademark, and a mark that sounds like yours can block your application even if it’s spelled differently. Someone who registered “Klear” in your product class will block “Clear” just as effectively.
If your brand includes a logo, write a plain description of what it depicts so you can match it later against the USPTO’s design classification codes.
You also need to know what you’re selling. Every trademark application classifies the goods or services it covers under the Nice Classification system, which divides all products into 34 goods classes and 11 services classes for a total of 45 international classes.1United States Patent and Trademark Office. Nice Agreement Current Edition Version – General Remarks, Class Headings and Explanatory Notes A coffee shop and a software company could both use the same name without conflict because they operate in different classes. Identifying your classes before you search prevents two mistakes: missing a direct competitor, or panicking over a mark in an unrelated industry.
Search the Federal Trademark Database
The USPTO’s Trademark Search at tmsearch.uspto.gov is free, public, and the single most important tool in the process.2United States Patent and Trademark Office. Search Our Trademark Database It lets you search word marks, design marks, and combinations of both, and it supports logical operators like AND, OR, and NOT so you can build queries that catch variations on your name.3United States Patent and Trademark Office. Federal Trademark Searching – Field Tag Searching
Don’t stop at an exact-match search. Run separate queries for phonetic equivalents, common misspellings, and synonyms.
Searching Logos and Design Marks
If your brand includes a graphic element, you’ll search using design codes rather than words. The USPTO’s Design Search Code Manual organizes visual elements into six-digit codes: the first two digits identify a broad category (03 for animals, for example), the next two a division (03.01 for birds and bats), and the final two a specific section such as eagles.4United States Patent and Trademark Office. Design Search Codes Identify the most prominent visual elements in your logo, look up the corresponding codes, and search those codes in the system. The system does not currently support reverse image searching, so you can’t upload a picture and find matches that way.
Reading the Results
Each result carries a status label. “Live” means the registration or application is active and enforceable. “Dead” means it was abandoned, refused, or expired.5United States Patent and Trademark Office. Common Status Descriptors A dead mark doesn’t automatically mean the name is available. The prior owner may still hold common law rights from continued use in the marketplace, and a new applicant with a confusingly similar mark that was recently abandoned may still face an opposition proceeding.
For any live result that looks like a potential conflict, click through to the Trademark Status and Document Retrieval (TSDR) system. TSDR shows the full application history, the goods and services covered, maintenance filing deadlines, specimens of the mark as used, and any legal challenges the mark has faced.6United States Patent and Trademark Office. Checking the Status of a Trademark Application or Registration Look closely at the listed goods and services. A mark registered for restaurant services won’t necessarily block the same name for software unless the two markets overlap enough to confuse consumers.
Applications Already in Use vs. Intent-to-Use
You’ll encounter two main types of applications in the database. A Section 1(a) application means the owner is already using the mark in commerce. A Section 1(b) application means the owner hasn’t started using the mark yet but has a genuine intention to do so in the near future.7United States Patent and Trademark Office. Basis Intent-to-use applications are live placeholders. They give the applicant priority over anyone who files later, even though the mark isn’t in the marketplace yet. Treat an active 1(b) application as a real obstacle, not an empty filing you can ignore.
How the USPTO Decides Whether Marks Conflict
Finding a mark that looks or sounds similar to yours doesn’t end the analysis. The USPTO evaluates whether consumers are likely to confuse two marks using a set of factors commonly called the DuPont factors. The two most important are the similarity of the marks themselves (how they look, sound, and convey meaning) and how closely related the goods or services are. These two factors work on a sliding scale: the more similar the marks, the less related the goods need to be for the USPTO to find a conflict, and the reverse.
Other considerations include the sophistication of the buyers (a shopper grabbing a snack is more easily confused than a procurement officer evaluating industrial equipment), whether the products move through the same sales channels, how well-known the existing mark is, and whether there’s any evidence of actual confusion in the marketplace. Understanding the sliding-scale relationship between mark similarity and product relatedness will save you from two common mistakes: dismissing a conflict because “the products are different” when the names are nearly identical, or abandoning a good name because a vaguely similar mark exists in a completely unrelated field.
Search State Trademark Registrations
Not every trademark appears in the federal database. Businesses operating within a single state can register their marks with that state’s Secretary of State office, and those registrations won’t show up on the USPTO system. Most state offices maintain a searchable online database where you can filter specifically for trademark and service mark filings rather than general business entity names. Enter your proposed mark and its variations, and compare the results against what you found federally.
State registration is less expensive and faster than federal registration. It gives a local business immediate legal protection within that state’s borders and standing to bring infringement lawsuits in state courts. A conflict at the state level may not block you in other states, but it will block you from operating in that state’s market.
Search for Unregistered Common Law Marks
A business doesn’t need to register a trademark to own one. Rights arise automatically through actual use in commerce, and these common law rights are protected under federal law. Anyone who uses a word, symbol, or design in a way that’s likely to confuse consumers about the origin of goods or services can be sued by the party who used it first.8Office of the Law Revision Counsel. 15 USC 1125 – False Designations of Origin and False Descriptions Forbidden A business with no government filings whatsoever can still force you to stop using a name if they used it first in the same market.
Common law marks won’t appear in any government database, so look elsewhere:
- Search domain name registrations using ICANN’s Registration Data Lookup Tool at lookup.icann.org, which replaced the older WHOIS system.9ICANN Lookup. Registration Data Lookup Tool
- Check social media platforms for active business accounts using the name.
- Run web searches for the name combined with your product category.
- Look through industry directories and trade publications.
The goal is to find any business already using the name in a way that would create consumer confusion.
Common law rights carry an important limit: they’re restricted to the geographic area where the mark is actually used. A coffee roaster using a name only in Portland, Oregon has common law rights in the Portland area but can’t prevent someone from using the same name in Miami. That geographic limit disappears once a mark is federally registered, which is one of the strongest reasons to pursue federal registration once your brand gains traction.
Search International Trademark Databases
If you plan to sell products or services outside the United States, you need to check international registrations too. The World Intellectual Property Organization (WIPO) maintains the Global Brand Database at branddb.wipo.int, which aggregates trademark records from participating countries and the Madrid System for international registrations.10World Intellectual Property Organization. Global Brand Database You can search by keyword, owner name, registration number, goods and services class, or by image similarity. Not every country participates, but the database is large enough to flag most serious international conflicts.
What Using a Trademarked Name Can Cost
Skipping a clearance search can cost far more than the search itself. The most common first step is a cease-and-desist letter demanding that you stop using the name immediately. If you ignore it or the trademark owner sues, federal law authorizes several remedies. A court can order you to stop using the mark entirely, require destruction of any infringing materials, and award the trademark owner your profits earned under the infringing name, their actual damages, and the costs of the lawsuit.11United States Patent and Trademark Office. About Trademark Infringement
Damages can escalate. A court has discretion to increase damages up to three times the actual amount when circumstances warrant, and in exceptional cases may order the losing party to pay the winner’s attorney fees.12Office of the Law Revision Counsel. 15 USC 1117 – Recovery for Violation of Rights Federal law also gives courts broad power to grant injunctive relief, and a trademark owner who proves a violation is entitled to a rebuttable presumption of irreparable harm.13Office of the Law Revision Counsel. 15 USC 1116 – Injunctive Relief In practical terms, an infringement finding usually results in a court order to stop, not just a damages award. Beyond the legal exposure, forced rebranding after you’ve already invested in packaging, signage, a website, and marketing is the kind of financial hit that sinks small businesses.
When to Hire a Trademark Attorney
The USPTO itself recommends that applicants consider hiring a U.S.-licensed attorney, even when it’s not legally required. An attorney can conduct a professional clearance search, prepare the application accurately, respond to legal objections from the USPTO, and enforce the mark after registration.14United States Patent and Trademark Office. Do I Need an Attorney? A self-directed search through the federal and state databases will catch obvious conflicts, but a professional search firm or attorney uses commercial databases, phonetic algorithms, and industry knowledge to catch the near-misses that trip up non-specialists.
Professional searches typically run from a few hundred to over a thousand dollars depending on how many classes you need covered. Compare that against the current USPTO electronic filing fee of $350 per class and the larger cost of forced rebranding or litigation if a conflict surfaces after launch.15United States Patent and Trademark Office. USPTO Fee Schedule If your clearance search turns up a mark that’s similar but not identical and you’re unsure whether it’s a real conflict, that’s the clearest signal to get professional advice before spending anything else.