TL;DR: A clear company name at Companies House does NOT mean you're safe from trademark infringement claims. The Name Checker is your first check — but a full trademark search is the essential next step.
This is the most common misconception in company formation: founders believe that if a company name is accepted by the corporate registry, it's legally safe to use. It is not.
Corporate registries — Companies House in the UK, ASIC in Australia, the New Zealand Companies Office — check for conflicts with other registered company names. They do not check trademark registers. A name can be available as a registered company name while simultaneously infringing a registered trademark owned by a completely different entity.
The implications of this oversight can be severe. A company that builds its brand under an infringing name — developing a website, printing materials, signing contracts — and then receives a cease-and-desist letter from a trademark owner faces two choices: defend a costly legal action, or rebrand entirely. Rebranding mid-operation means changing your company name at Companies House, updating all marketing materials, changing your domain name, notifying customers and suppliers, and potentially losing the brand equity you've built.
The cost of this mistake routinely runs into tens of thousands of dollars. The cost of a proper trademark search before registration is a fraction of that.
The MmowW Scrib🐮 Name Checker is designed as your first line of defence. It checks your proposed name against registered company names in your jurisdiction — which is a necessary but not sufficient check.
What the Name Checker does:
What the Name Checker does not do:
The recommended two-step process:
The Name Checker's output includes direct links to the trademark search tools for each country, making the second step easy to initiate.
Use our free tool: Name Checker
Try it free →A UK founder forms "Acorn Digital Marketing Ltd" — the name is available on Companies House, and she gets the certificate of incorporation. Six months later, she receives a solicitor's letter from a UK company that has held a registered trademark on "Acorn Digital" in the marketing services category for three years.
The name was available at Companies House because the trademark holder operates under a different registered company name. The corporate registry check caught no conflict. The trademark register would have shown the conflict immediately.
The founder faces a demand to cease using the "Acorn Digital" branding and potential damages for infringement during the six months of use. The cost of the legal response, rebranding, and domain migration exceeds £15,000.
An Australian company expanding to the UK and Canada checks company name availability in both countries and finds the name is clear. What they don't check is the UK Intellectual Property Office (IPO) trademark register.
In the UK, a US company (which doesn't trade in Australia) has a registered trademark for an identical name in the same product category. The US company's trademark covers EU/UK territory. The Australian company's UK registration is perfectly valid as a company name — but using it as a brand triggers trademark infringement.
The Name Checker's output, which links to the IPO trademark search, would have prompted this check before any money was invested in the UK market.
A New Zealand startup checks the Name Checker for their proposed company name. The corporate registry check is clear. But when the founder tries to register the matching .com domain, it's taken — by an active US business using the same name in the same industry.
While the US business's trademark may not be registered in New Zealand (trademarks are territorial), the situation signals a risk: the US company may have grounds for a dispute, especially if it can show prior use or has international trademark registrations. The founder uses this signal to investigate further before committing to the name.
| Country | Corporate Registry | Trademark Registry | Trademark Search URL |
|---|---|---|---|
| UK | Companies House | Intellectual Property Office (IPO) | trademarks.ipo.gov.uk |
| France | INPI | INPI (same body) | bases-marques.inpi.fr |
| Sweden | Bolagsverket | PRV (Patent- och registreringsverket) | prv.se |
| Australia | ASIC | IP Australia | search.ipaustralia.gov.au |
| New Zealand | Companies Office | IPONZ | app.iponz.govt.nz |
| Canada | Corporations Canada | CIPO | opic.ic.gc.ca |
| USA | State SOS | USPTO | tmsearch.uspto.gov |
Also check: EUIPO for EU-wide trademark coverage: euipo.europa.eu
Name Checker is completely free — no signup required. Start with the company name check, then follow the trademark search links.
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MmowW Scrib🐮 is a document preparation service, not a law firm. This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney or solicitor for advice specific to your situation.
Q: What is a "likelihood of confusion" test in trademark law?
A: When assessing trademark infringement, courts and trademark offices apply a "likelihood of confusion" test — whether a reasonably informed consumer might confuse the two marks. An identical name in the same industry is almost always a conflict. A similar name in a different industry may or may not be — it depends on factors like the strength of the existing mark, the relatedness of the goods/services, and the sophistication of consumers. A qualified attorney should advise on specific situations.
Q: Should I register a trademark for my company name?
A: Trademark registration is generally advisable if your brand has commercial value and you intend to use it consistently in commerce. Registration gives you national priority rights, the ability to sue for infringement, and a clear public record of your ownership. The decision to register should be made with a qualified trademark attorney. The Name Checker's trademark search links help you understand the landscape before making that decision.
Q: Does a .com domain registration give me any trademark rights?
A: No. Domain name registration does not confer trademark rights. You can hold a .com domain for a name someone else has trademarked, and you can be required to transfer it through a domain dispute process (UDRP). Trademark rights come from use in commerce and/or registration with the relevant intellectual property office.
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