“No exact match” is not a clearance

The most expensive mistake in naming is searching a register for your exact string, finding nothing, and treating that as permission. The test a tribunal applies is not whether two names are identical. It is whether an ordinary buyer would be confused.

The actual test

Across the major systems the question is broadly the same: is there a likelihood of confusion between the marks, judged on the similarity of the signs and the similarity of the goods or services they cover, together. Neither half decides it alone. Two near-identical names in unrelated trades can coexist. Two merely similar names in the same trade often cannot.

The five ways an exact-match search misses

1. It only sees one spelling

Registers index the mark as written. A search for Lumira will not surface Lumyra, Loomira, Lumira Co or LUMIRRA, and an examiner or a judge will treat several of those as close enough to matter. Search the variants you would accept in a badly-typed email, because that is roughly the population a confusion test contemplates.

2. It ignores how the name sounds

Aural similarity counts on its own. Names are spoken in shops, on phones, in radio advertising, and to voice assistants. Kwik and Quick are visually unalike and aurally identical. If a name only works written down, you have bought half a trademark.

3. It ignores meaning

Conceptual similarity counts too. Two marks that share an idea can conflict even when they share no letters, and that extends across languages in markets where the relevant public would understand both.

4. It does not see unregistered rights

This is the one that catches people, because nothing in any database will warn you. In the United Kingdom, passing off protects goodwill built through use without any registration at all. In the United States, common-law rights arise from use in a geographic area, and the register is not the whole story. A business that has traded under a name for fifteen years without ever registering it can still stop you, and will not appear in a single search you run.

The practical answer is to search the open web and the relevant company registers as well as the trademark registers, and to treat a well-established trading name as a real obstacle rather than an absence of one.

5. It flattens the class question

A register search that ignores classes returns everything and tells you nothing. A search that filters to one class may miss the conflict entirely, because similarity of goods is assessed on what the goods actually are, not on which class number they sit in. Class 9 software and class 42 software-as-a-service routinely collide. What a class actually covers.

What a reasonable self-search looks like

You are not going to do a professional clearance yourself, and this page is not going to pretend otherwise. What you can do is eliminate the obvious problems cheaply, before you pay anyone, so that the names reaching a professional are worth the fee.

Search the exact name on the registers relevant to where you will trade.
Search three or four deliberate misspellings and any homophone.
Search the distinctive part alone, without your suffix. Northwind Ledger conflicts as Northwind if that is the part doing the work.
Search the open web and the company register for the name as a trading name.
Repeat for every market you intend to enter within about three years, not just the first.

If all five come back clean, you have a candidate worth spending money on. If any of them surfaces something in a related trade, drop the name now. Names are cheap at this stage and ruinous later.

When to stop reading and hire someone

Get professional advice before you spend real money on a name if: you are raising investment, entering more than one country, operating in a regulated sector, adopting a name close to something already in your trade, or planning to register the mark yourself. A clearance search costs a fraction of a rebrand, and very much less than an injunction against a business that is already trading.

Questions

I found an identical mark but in a completely different industry. Is that fatal?

Not necessarily, and this is where the two-part test helps you rather than hurts you. Similarity of goods and services is half the question, so an identical name on genuinely unrelated goods may be able to coexist — plenty do. The caution is that “unrelated” is judged on how the market sees it, not on how you see it, and that marks with a strong reputation get protection stretching beyond their own goods. An identical mark is always a reason to take advice rather than to proceed on your own reading.

The name is free in my country. Is that enough?

Only if you are certain you will never trade, ship, or advertise anywhere else. Trademark rights are territorial, so clearing one country tells you nothing about the next. The time to find out about a conflict in a market you plan to enter in two years is now, while the name is still a candidate and not a brand.

Can I just register the mark and rely on that?

Registration gives you a right to enforce, not immunity from being challenged. An earlier rights-holder can oppose your application while it is pending, or apply to invalidate the registration afterwards. A granted registration is not a determination that you were free to use the name; those are different questions, and the second is the one that decides whether you keep trading.

Does a domain registration give me any trademark rights?

No. Holding a domain is a contract with a registrar for the use of a string. It confers no trademark right, and it is no defence against one — there are long-running dispute procedures designed precisely to transfer domains away from registrants who hold a name someone else has rights in. Owning the domain is the weakest form of “having” a name.

Reviewed 2026-09-20. General guidance on how trademark conflicts are assessed. Not legal advice, and no substitute for a clearance search.