Business Name Registration in Ireland Does Not Make the Name Yours

You have probably been told that once your business name is registered with the CRO, the name belongs to you. It is one of the most common beliefs I hear from people starting out, and it is wrong in a way that costs real money.

The certificate looks the part. Official crest, registration number, a date. It arrives after you have filled in an RBN1 and paid your twenty euro, and it feels like the State has just handed you something. What it has actually handed you is a public note saying who is behind the name. Nothing more.

Here is the sentence that settles it, from the Act itself. Section 14(3) of the Registration of Business Names Act 1963 states that registration of a business name "shall not be construed as authorising the use of that name if apart from such registration the use thereof could be prohibited" ^[1].

Read that twice. The register does not authorise anything.

What the certificate actually buys you

The purpose of the 1963 Act is transparency, not ownership. When the Department of Business, Enterprise and Innovation reviewed the Act, its own consultation paper put it about as bluntly as a government document ever puts anything: the Act "does not create a legal entity or confer any legal status or propriety rights", and it is "accordingly no defence to an action for passing off or for infringement of a trademark to claim registration of a particular business name was effected under the Act" ^[2].

So what is the register for? If a business trades under an assumed name, a customer or supplier who needs to sue somebody has to be able to work out who the legal entity behind that name actually is. That is the entire job. The register answers "who do I write to", not "who owns this".

You are required to register if you trade under anything other than your own true surname. Section 3 covers individuals, partnerships and bodies corporate alike, and section 6 gives you one month from adopting the name to file the particulars ^[1]. So a plumber trading as "J. Byrne" does not need to register. The same plumber trading as "Byrne Heating Solutions" does.

The fee is twenty euro filed online through CORE, or forty on paper ^[3]. Cheap. That is part of the problem, because cheap things feel low stakes, and people file the form believing it has closed a question that it has not even opened.

Company names get checked. Business names do not.

This is the distinction that catches people, and it catches them because both registers live at the same office.

If you incorporate a limited company, the Registrar will refuse a name that is identical or too similar to a company already on the register. The CRO also warns that ordinary words like "company", "services", "and" or "limited" are not enough on their own to distinguish one name from another, so adding "Services" to a name somebody else is using will not get you through.

Business names get none of that scrutiny. The CRO states plainly that it does not check proposed business names against the names already sitting on the register of companies or the register of business names ^[3]. Nobody is comparing your application to anything. If two people in different counties register near identical trading names in the same month, both certificates issue, and neither person is told the other exists.

What does that mean on an ordinary Tuesday? It means the certificate in your drawer is not evidence that the name was free. It is evidence that you filled in a form correctly.

The register that actually confers rights

If you want a name you can defend, the trade mark register is where that happens. The Intellectual Property Office of Ireland holds it, and searching it costs nothing ^[4].

That search is the single highest-value ten minutes in this entire process, and almost nobody starting a business does it. The CRO itself tells applicants to check the proposed name against company names and trade marks before incurring any costs, specifically mentioning expenditure on business stationery, because anyone with a right to that name can bring an infringement or passing off action ^[3].

Registering a trade mark in Ireland costs seventy euro for one class of goods or services, seventy for each additional class, and a further one hundred and seventy seven euro when the mark proceeds to registration ^[4]. For a business that has already committed to a name and intends to build something on it, that is a rounding error against the cost of changing it later.

One genuine limitation, because a trade mark search is not a clean bill of health. It surfaces registered and pending marks. It cannot surface unregistered rights, and in Ireland a business that has traded under a name long enough to build a reputation in it can bring a passing off action without ever having registered anything. Protection is also carved up by class and by territory, so a mark registered for bakery goods does not stop somebody using a similar name for accountancy services. A clear search result lowers your risk considerably. It does not zero it.

The domain is a fifth question, not the first

Domain availability tells you nothing about whether you may lawfully use a name, and this trips people up because the domain is usually the first thing they check.

Since March 2018 the .ie registry no longer asks you to prove a claim to the name you are registering. You still have to prove a genuine connection to Ireland, using something like an RBN or CRO number, a VAT number, or personal identity documents. Beyond that, available .ie names go first come, first served ^[5].

First come, first served cuts both ways. It means a name being free at a registrar is not a signal that the name is clear, and it means a name being taken at a registrar is not a signal that you are barred from trading under it. These are separate questions with separate answers, and the only sensible order is to settle the legal one before the technical one. If you are weighing up whether to go .ie or .com for an Irish business, do that after the trade mark search, not before.

Register or registry	What it actually tells you	What it does not give you
CRO register of business names	Who is legally behind a trading name	Ownership, or any exclusive right
CRO register of companies	Whether a company name is identical or too similar	Cover for a trading name that is not a company name
IPOI trade mark register	Whether someone holds enforceable rights in the name	Rights outside your registered classes and territory
Domain registry	Whether a web address is unclaimed today	Any claim to the name itself

What this looks like when it goes wrong

Consider a typical case, because this pattern turns up more often than the cost of avoiding it would suggest. A chimney sweep in Kerry expands from one van to two, decides the operation needs a proper trading name rather than his own, registers it with the CRO, and gets the certificate back within days.

Then he spends. Both vans signwritten. Workwear. Magnetic door panels, invoice pads, a batch of leaflets for the autumn run when everyone remembers their flue at once. Months later a letter arrives from a solicitor acting for a business in another county holding a registered trade mark on a near identical name in the same class of services.

He has a certificate. The certificate is not a defence, because section 14(3) says it is not. The vans get resprayed, the leaflets go in the recycling, and the money is simply gone. Not a fine. Not a court award. Just sunk costs on a name he was never told to check, plus the quiet damage of the customers who knew him under the old name and now cannot find him.

The frustrating part is that the check that would have caught it was free and would have taken an afternoon at most.

Clear the name before you spend a euro

Run these in order. The order matters more than the individual steps, because each one is cheaper than the one after it.

1. Search the trade mark register. Go to the Intellectual Property Office of Ireland and search the Irish and EU databases for your name and anything close to it. Free, and it is the check most likely to stop you.
2. Search both CRO registers. You can inspect the register of companies and the register of business names free of charge through CORE. You are looking for anyone already trading close to your name.
3. Search the way a customer would. Type the name into Google with and without your county. A business with no registrations at all can still hold unregistered rights built on years of trading.
4. Verify the domain last. Once the name survives the first three checks, confirm the web address is available and register it.
5. Register the business name, then commit. File the RBN1 within one month of adopting the name, and only then order signage, packaging or anything else with the name printed on it.

Where the website fits

There is a sequencing point worth making here, because it is the one place the website genuinely helps.

A name feels abstract until you see it on something. Owners commit to signage and vehicle graphics partly because those are the first tangible proof the business is real, and that is an expensive way to test how a name looks. A website is the cheap version of that test. You can stand the name up, look at it in a header, show it to three people whose judgement you trust, and change your mind for nothing.

That only works if standing a site up is genuinely quick. Describe the business, and Web60's AI builder has a full WordPress site live in under a minute, so you can see the name on a real site before you commit a cent to signage. Everything is included for sixty euro a year, and if the name does not survive the trade mark search, you have lost a minute rather than two resprayed vans.

Now the honest caveat. If you are at the stage of testing three candidate names and are not committed to any of them, you do not need hosting at all. A free tier on one of the big drag and drop builders will stand up a one page holding page and cost you nothing, and for that narrow job it is genuinely the right call. The calculation changes the moment you have chosen the name and want the site to still be there, and still be yours, in three years.

Once the name is settled and the site is live, there is a separate obligation waiting: what Irish law requires your footer to display about the legal entity behind the trading name. Different question, same afternoon's work.

Conclusion

The registers of Ireland are not one system. They are four, they were built at different times for different purposes, and only one of them hands you anything you can enforce. The CRO certificate tells the world who you are. The trade mark register is what tells other people to back off.

The good news is that the sequence is short, mostly free, and entirely doable in an afternoon before any money changes hands. Search the trade mark register first, the company and business name registers second, the open web third, and buy the domain when all three come back clean.

Do it in that order and the name on the van stays on the van.

Frequently Asked Questions

Does registering a business name with the CRO stop anyone else using it?

No. Section 14(3) of the Registration of Business Names Act 1963 states that registration shall not be construed as authorising the use of the name if its use could otherwise be prohibited. The register exists so customers and suppliers can identify the legal entity behind a trading name. It grants no ownership and no exclusive right, and it is no defence to a passing off or trade mark infringement action.

Do I have to register a business name if I am a sole trader?

Only if you trade under a name that is not your own true surname. Under section 3 of the Act, an individual carrying on business under a name that does not consist of their true surname, with no addition other than their Christian names or initials, must register. Trading as your own name needs no registration. Trading as anything else does, within one month of adopting the name under section 6.

Does the CRO check whether my business name is already taken?

No. The CRO states that it does not check proposed business names against the names on the register of companies or the register of business names. Company names are different: the Registrar can refuse a company name that is identical or too similar to an existing one. Business names receive no such comparison, so two very similar names can both be registered.

How much does it cost to register a business name in Ireland?

Twenty euro if you file online through CORE, or forty euro on paper. The form is an RBN1 for an individual, an RBN1A for a partnership and an RBN1B for a body corporate. The low cost is part of why people assume the certificate does more than it does.

What is the difference between a business name and a trade mark?

A business name is a disclosure record telling the public who is behind a trading name. A trade mark is a property right you can enforce against someone else using a confusingly similar name. Searching the Irish trade mark register is free through the Intellectual Property Office of Ireland. Applying costs seventy euro for one class, with a further one hundred and seventy seven euro payable on registration.

If the domain is available, does that mean the name is free to use?

No, and this is the check people do first when it should be close to last. Since March 2018 the .ie registry has not required you to prove a claim to a name, only a genuine connection to Ireland. Available names are allocated first come, first served. Domain availability is a technical answer to a technical question and says nothing about whether someone holds trade mark or passing off rights in the name.

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