A surprising number of well-funded startups never bother to run a real trademark search before they launch. Then a cease-and-desist letter arrives, and the company spends six figures rebranding everything from the logo to the product UI. The frustrating part: a basic clearance search takes about five minutes and costs nothing. This guide walks through how to do it yourself, when the result is reliable, and when you need to call a real trademark attorney.
What a trademark actually protects
A trademark protects a brand identifier— usually a word, phrase, or logo — within a specific commercial category. Crucially, it does notprotect the idea or product itself; that is what patents do. Two companies can hold the same trademarked word so long as they operate in non-overlapping classes. “Delta” is simultaneously an airline (Class 39), a faucet (Class 11), and a fraternity. None of them conflict because their commercial categories do not overlap.
Step 1: Pin down your business classes
The USPTO uses the international Nice Classification system — 45 numbered classes covering every type of good or service. Most startups land in two or three. Before you search, identify yours. A few common ones:
- Class 9 — downloadable software, mobile apps, SaaS frontends.
- Class 42 — SaaS as a service, cloud computing, technical consulting.
- Class 35 — advertising, marketplaces, business services.
- Class 25 — apparel.
- Class 30 — food and packaged goods.
Most software companies need both Class 9 and Class 42. Get this wrong and you will either over-search (rejecting safe names) or under-search (missing real conflicts).
Step 2: Run a direct-match search on USPTO TESS
The USPTO’s public database is called TESS (Trademark Electronic Search System). It is free, public, and the authoritative source for U.S. marks. Visit tmsearch.uspto.gov, choose “Basic Word Mark Search,” and search your candidate name with field tag [BI] (basic index).
Look for any marks in your classes with status LIVE. Dead marks usually do not block you, but they can be revived. Read the goods and services description carefully — if it overlaps with what you sell, you have a conflict to take seriously.
Step 3: Run a phonetic and design search
Trademark law cares about “likelihood of confusion,” not exact spelling. That means “Phlare” conflicts with “Flare” if they target similar customers. Run phonetic variants and common misspellings of your name through TESS as well. For shortcuts, our trademark availability checker runs phonetic-aware scans against the USPTO database automatically.
Step 4: Check international jurisdictions if you will operate globally
A clean U.S. search is not enough if you sell to customers in Europe, the UK, or Asia. Quick free tools:
- EUIPO eSearch plus — covers the European Union.
- UK IPO — Britain’s national database.
- WIPO Global Brand Database — aggregates dozens of national registries in one search.
WIPO is the fastest way to spot blocking marks across multiple jurisdictions in a single query.
Step 5: Check common-law trademarks (unregistered)
Even an unregistered mark can block you if the owner has been using it commercially. To find common-law marks, search:
- Google for the exact name plus your product category.
- Domain registries (often via WHOIS) for the matching .com.
- Crunchbase and Product Hunt for any company actively using the name.
- App stores for the matching app name.
If the name is in active commercial use anywhere in your category, treat it as a conflict, even if it is not registered.
How to read the results
After your search, you will land in one of three buckets:
- Green— no exact, phonetic, or common-law conflicts in your classes. Safe to proceed, but consider filing your own trademark to lock it in.
- Yellow— partial overlap, adjacent class, or a dead mark that could be revived. Worth a 30-minute consultation with a trademark attorney before committing.
- Red— a live mark in your exact class, or a household name in any class. Pick a different name. The cost of fighting an opposition is almost always higher than the cost of choosing a different word.
When you should still hire an attorney
Self-service searches are excellent for clearance — ruling names out cheaply. They are not a substitute for legal advice when:
- You are about to file your own trademark application.
- You operate in a high-conflict category (fashion, beverages, fintech).
- You have already received a cease-and-desist letter.
- You are licensing or selling the brand.
A flat-fee consultation with a trademark attorney typically runs a few hundred dollars and can save you orders of magnitude more in rebranding costs.
The five-minute version
- Identify your USPTO classes.
- Search TESS for direct matches in those classes.
- Search TESS for phonetic variants.
- Search WIPO for international conflicts.
- Google the name plus your category for unregistered use.
Or skip the manual work and let BrandSearch IQ run all five checks at once, alongside domain and social-handle availability, in a single search.
This article is for informational purposes only and is not legal advice. Consult a licensed trademark attorney before relying on a search for registration decisions.
