How to Check If a Trademark Is Already Registered

Why a Trademark Search is a Non-Negotiable First Step

Coming up with the perfect name for your business or product feels like a huge win. But before you order the business cards and buy the domain, there’s a critical step you can't afford to skip: checking if that name is already a registered trademark.

Imagine spending months building your brand, only to receive a cease-and-desist letter forcing you into a costly and demoralising rebrand. A thorough trademark search is your first line of defence. It helps you:

• Avoid legal disputes: It prevents you from accidentally infringing on someone else's intellectual property
• Save time and money: The cost of a preliminary search is tiny compared to the cost of rebranding or a legal battle
• Secure your brand identity: It ensures the name you’re investing in is truly yours to own and protect

This guide will walk you through the DIY steps for a preliminary search. While it's not a substitute for professional legal advice, it's an essential due diligence step for every founder.

Before You Start: Understanding Trademark Classes

The first thing to know is that trademarks are registered for specific categories of goods or services. You can’t just trademark a name for “everything.” These categories are defined by an international system called the Nice Classification, which groups all goods and services into 45 distinct “classes.”

This is why you can have Dove soap (Class 3) and Dove chocolate (Class 30). They share a name, but because they operate in completely different classes, consumers are unlikely to mix them up.

Before you start your search, you need to identify which classes are relevant to your business. The UK’s Intellectual Property Office (UKIPO) has a helpful search tool to find the right classes for your goods or services. Jot down the class numbers that apply to what you do now, and what you might expand into in the future.

How to Check Trademark Availability in the UK

If you’re primarily operating in the United Kingdom, your first port of call is the UK Intellectual Property Office (UKIPO) database. It’s a free, powerful tool that lets you search all existing UK trademarks.

Using the UKIPO's Online Search Tool

Here’s a simple process to follow:

1. Navigate to the search page: You can find the official tool on the GOV.UK website
2. Choose your search type: You’ll see several options. For a first pass, the ‘Similar’ search is your best bet. An ‘Exact’ search is too narrow and might miss phonetic spellings or slight variations that could still block your application
3. Enter your proposed name: Type your name into the search box. Try a few variations — with and without spaces, and any common misspellings
4. Filter by class: Enter the class numbers you identified earlier. This will narrow the results to only those that are relevant to your business, saving you from wading through hundreds of irrelevant marks
5. Analyse the results: Look for marks that are identical or confusingly similar to yours, both in name and in the goods/services they cover. Pay close attention to the ‘Status’ of the mark. ‘Registered’ or ‘Application Published’ are the ones to be most wary of

Expanding Your Search to the European Union

If you have ambitions to trade in the EU, or if your name is generic enough that a European counterpart could exist, you must also check the EU database. A UK trademark only protects you in the UK.

Navigating the EUIPO's eSearch Plus

The European Union Intellectual Property Office (EUIPO) maintains a database for all EU member states.

The process is very similar to the UKIPO search. You’ll use the EUIPO’s eSearch plus tool. Again, search for your proposed name and filter by the relevant Nice Classes. A clear result here is a good sign for any future European expansion plans.

Common Pitfalls to Avoid in Your Search

A simple search for an exact name isn’t enough. Trademark law is concerned with the “likelihood of confusion” in the mind of the consumer. Here are a few traps to watch out for.

1. Only Searching for the Exact Name

Your biggest risk isn't just an identical name; it's a similar one. Examiners will look at phonetic, visual, and conceptual similarities. Think about:

• Alternative spellings: A search for “Wizebirds” should also include searches for “Wisebirds” or “Wizebirdz”
• Phonetic equivalents: “For U” could be considered similar to “4U”
• Similar concepts: A brand called “Starlight” might have trouble if “Starlite” is already registered in the same class

2. Forgetting About Unregistered Rights

In the UK, a business can build up rights in a name simply by using it over time, even without a formal registration. This is known as the tort of “passing off.” If another company has been trading under a similar name for years and has built a reputation, they could potentially stop you from using yours.

Actionable Tip: Your search shouldn’t stop at the official databases. Do a thorough Google search, check social media handles, and search the Companies House register to see if anyone else is actively using your name in your industry.

3. Ignoring Similar Goods or Services

Don't just look at marks in your exact class. Consider adjacent classes. If you’re launching a new software app (Class 9), you should also be aware of trademarks for related IT consultancy services (Class 42). If a consumer could reasonably think the two products or services come from the same company, there might be a conflict.

The Search is Clear. What's Next?

If your preliminary searches come back clear, that's fantastic news! It's a strong indicator that your name is available. The next step is usually to file your trademark application.

But remember, registration isn't the end of the journey. Protecting your brand is an ongoing process. Once your trademark is registered, you need to monitor the official registers for new applications that might be too similar to yours, giving you the chance to oppose them before they become a problem.

This is where a monitoring service, like our own Wizebirds Shield, becomes invaluable. It automatically watches the registers for you and alerts you to potential infringements, so you can act before a competing mark gets approved and starts to dilute your brand. It’s the smart, simple way to defend the brand you’ve worked so hard to build.

This article is for informational purposes only and does not constitute legal advice. Trademark law is complex and jurisdiction-specific. Please consult a qualified intellectual property attorney for advice specific to your situation.