MacLachlan & Donaldson

One of Ireland’s most experienced Intellectual Property firms.

Over 200 Years of Combined Experience

MacLachlan & Donaldson is one of Ireland’s leading Intellectual Property firms, having zealously fought for our clients’ rights for more than 50 years. Our highly trained staff of attorneys, and our extensive resources, are dedicated to protecting your IP interests. With attorneys in Dublin and Belfast, we are an all-Ireland firm who can represent your rights in Ireland, the United Kingdom and the European Union, as well as multiple territories across the globe.

We are among the top 250 firms across all 27 countries in the European Union for the filing of EU trade mark applications. The 2017 edition of World Trademark Review 1000 states that since its establishment in 1967, “MacLachlan & Donaldson has burned bright in Ireland’s IP firmament. Treasured for its stellar trademark prosecution and consultancy output, it expertly manages the international portfolios of some of the world’s largest companies”.

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Whether you have invented a product, crafted a design, or created a trade mark, intellectual property is a valuable asset to any business. We work diligently with all our clients to ensure that their intellectual property is protected and delivers tangible gains for their businesses.

Our clients include some of the world’s most prestigious and well known companies, as well as many individual innovators and small enterprises, granting our team experience protecting interests both great and small.

Many of our clients work at the cutting edge of science and technology, while others are market leaders in retail, food and service sectors. With the extensive expertise we have working in different areas, and the breadth of qualifications brought to the table by our attorneys, we can devise a tailored strategy for our clients, no matter their needs.

Our individually tailored advice is rooted in our relationships with our clients, and a deep understanding of their businesses and market needs.

For clients with IP interests that range beyond Europe, we have a worldwide network of prestigious IP firms with whom we work, ensuring that we can protect your interests in any corner of the globe.

Free IP Consultation

If you would like to arrange a consultation with one of our IP experts please contact us below:

Latest News

Win a free trade mark application

Our competition for Entrepreneurs and Start-ups is open for Global Entreprenuership Week!

Brexit and Intellectual Property Webinar

Brexit is looming and will impact many aspects of business including Intellectual Property Rights (IPR). Join our webinar on 11th November at 12pm as we explain the effects of Brexit on the

Brexit and Intellectual Property

Brexit and Intellectual Property, Part II

Following on from Part I of of Brexit and IP, we will look now at a further range of topics including international trade marks, the ramifications of use, exhaustion of

UK flag, EU flag pointing different directions for Brexit

Brexit and Intellectual Property, Part I

As we are all aware the BREXIT transitional period or ‘implementation period’ ends on the 31st December 2020. There are a number of areas to cover in this topic, and

EPO Logo

EPO Oral Proceedings by video conference – a new frontier

It is interesting to note that although the EPO has been providing applicants and their representatives with the opportunity to be heard via video conferencing since 1998, it is the

Patents and Trade Marks in Ireland (Part II)

Having covered in some detail the history of patents in Ireland in early September, we now turn our attention to the history of trade marks, with some further insight into

Brompton Bicycle Case – a copyright game-changer?

On 11th June 2020, the Court of Justice of the European Union (‘CJEU’) handed its key decision Brompton Bicycle Ltd. v. Chedech / Get2Get (Case C‑833/18). In this judgment several

What, Where, When, Why and How of Copyright and Design

Let’s talk Copyright and Designs. Do you have an original product design such as a unique fashion design, a signature furniture design, statement jewellery design or simply a unique packing

The European Community Design

M&D provide a a full IP service to our clients, and this includes some of the less well known aspects of IP, including advice on design and copyright. We will

Patents and Trade Marks in Ireland (Part 1)

We've been looking at the history of intellectual property in our trivia posts over the past months, and looking at how it evolved in Ireland. We'd like to share a

The Irish Woman Wasn’t Irish After All

The EUIPO Grand Board of Appeal handed down its decision on April 2020 on an appeal against a declaration of invalidity of a registration for a device mark with the

Protect your trade marks, protect your brand, protect your business!

I enjoy baked beans; on toast, on a baked potato with cheese, with an Ulster fry (I know, sacrilege), in a toastie, and in a myriad of other ways.  But


During the time that our company has been working with MacLachlan & Donaldson, their trademark expertise has been stellar. They are quick to respond and their knowledge of intellectual property law is superior, which is crucial since we are an international company and require local expertise. Our contact person at the firm provides timely advice, organized reminders and updates, and clear, concise billing. When dealing with a number of outside law firms, we appreciate MacLachlan & Donaldson’s impeccable service.

NSE Products, Inc.

MacLachlan & Donaldson are our legal advisors on patent and trade mark applications and registrations for the last 20 years. This company is highly professional, efficient, objective, focused and has skilled teams working on all legal issues.

Robert A. Merry & Co. Limited

Our firm has been blessed to enjoy the highest quality legal service from MacLachlan & Donaldson for two decades. The dedication to clients, responsiveness, integrity and personal touch of their legal team is extraordinary!

GL Tool and Manufacturing Co., Inc.

MacLachlan & Donaldson have provided an excellent service to Trinity College Dublin over a very long period of time. The quality and responsiveness of their service is second to none.

Trinity College Dublin

As the largest Irish supplier of sports clothing in Ireland, protecting our Intellectual Property is of paramount importance to us. Over the years MacLachlan & Donaldson have been to the forefront in our efforts to protect our IP and offer an excellent service and are always willing to engage with us and provide us with peace of mind.

O’Neills Irish International Sports Company Limited

Campbell Bewley Group has been a client of MacLachlan & Donaldson for many years which is a testament to the very professional advice and service we continue to receive.

Campbell Bewley Group Limited

The expertise, advice and proficiency of service from MacLachlan & Donaldson is second to none. These pillars combined with trust is why we choose MacLachlan & Donaldson as our preferred business partners.

Connacht Gold Co-Operative Society Limited
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