Mr Mrs Miss Ms Dr Other


Partner & Patent Attorney

Dublin Office


Telephone. +353 (0)1 584 4705
Mobile. +353 (0)87 3745 915
Email. [email protected]
UPC Representative
Our team of specialist European patent litigators, oppositions specialists and patent attorneys bring together an extensive depth of legal and technical knowledge and are qualified to represent you in the UPC.


Marie is a Registered Irish Patent Attorney, European Patent Attorney and Chartered (UK) Patent Attorney with over 25 years of experience in advising clients including start-ups and SME’s to large corporations. Marie has worked across a number of technology areas and specialises in industrial chemistry, materials science, polymer chemistry, and pharmaceutical chemistry. Marie also has in-depth experience in obtaining Supplementary Protection Certificates (SPCs).

Marie has strong focus on providing commercially relevant, pragmatic advice based on individual clients’ goals and works to listen and actively engage in understanding those goals so as to tailor advice and action consistent with those goals. Marie has an MBA from the Open University which supports her commercially focused approach to advising on IP strategy.

Marie has worked with clients across the globe, including local firms in Ireland, as well as US and Chinese clients and her objective is on clear communication with the clients’ commercial aims as the central focus. Marie has previously worked with another leading firm of patent attorneys in Ireland where she had the role of Director of Operations for China and Chief Representative of the local China office.

Marie also has extensive experience of providing opinions and advising in relation to freedom to operate (FTO). In addition, she has represented clients at Oppositions and Appeals at the EPO and achieved successful outcomes for clients.

Marie has a strong ethos of being responsive and her values are aligned with striving for excellence at the core of HGF’s values.


Patent Attorney

Chartered (UK)

Trade Mark Attorney



BSc (Hons) Industrial Chemistry


MBA (Open University) specialised in strategy and managing innovation


Diploma in coaching for well-being and mental health


Microcredential in Mentoring for Diversity, Equity and Inclusion


Diploma in Executive and Personal coaching


IAM 1000

Marie Walsh is a European patent attorney, a UK chartered patent attorney, an Irish patent attorney, and a Community design and EU trademark attorney. She has over 25 years’ experience in private practice. Ms. Walsh graduated from the University of Limerick with a BSc (Hons), with a specialisation in industrial chemistry. She went on to work in the research department of a multinational pharmaceutical company in the United Kingdom, where her experience placed her at the fulcrum of exploratory research in polymer synthetic routes. Ms. Walsh joined the patent profession in 1989 and qualified as a UK chartered patent attorney and European patent attorney. She studied with the Open University and obtained an MBA with a focus on strategic management and management of innovation. Ms. Walsh’s work involves devising IP strategies for patent portfolios, including preparation and prosecution of patent applications primarily at the EPO and UK Intellectual Property Office for entrepreneurs, small and mid-sized enterprises and other organisations. Ms. Walsh works with US clients, local Irish clients, as well as a growing number of Chinese clients. Ms. Walsh led the firm’s China team and in 2018, was appointed Chief Representative of the China office of another leading firm in Ireland and carried out that role until 2021. Ms. Walsh practises in technologies across a number of sectors – in particular, in the chemistry and life sciences sector, including healthcare and pharmaceuticals, medtech and food technology – in relation to IP portfolio management and strategy; drafting and prosecution of patent applications, supplementary protection certificates, due diligence and freedom-to-operate opinions. During her career, Ms. Walsh has been directly responsible for the patent portfolios of several major multinational companies. Ms. Walsh is a Fellow of the Chartered Institute of Patent Attorneys and a member of the Irish Association of Patent and Trademark Attorneys. Ms. Walsh is Vice-Chair of the Unitary Patent (UP) and Unified Patent Court (UPC) Committee of the Association of Patent and Trade Mark Attorneys (APTMA) of Ireland.

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Substitute delegate - Ireland - on European Patent Institute (EPI) Litigation Committee


Managing IP EMEA Awards 2024

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Guest lecturer on the Law Society of Ireland's Diploma in Technology and IP since 2013
A new patent system dawns over Europe and presents opportunities for Ireland

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Conferences: 2023

December 7th 2023

Medtech Rising


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December 5th 2023

The Innovation Exchange - members' meeting


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September 20th 2023

Medical Technology Ireland Conference


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May 3rd 2023

Life Sciences North America - Boston


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April 20th 2023

Polymer Processing Conference 2023


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Conferences: 2022

October 6th 2022

Panel discussion on UP/UPC discussing the ramifications of the UP and UPC system for Irish businesses


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October 3rd 2022

Technoeconomics ® symposium


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September 21st 2022

Medical Technology Ireland Conference


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April 5th 2022

Irish American Business Chamber Network


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Marie is a mentor on the STEM Passport for Inclusion programme. The STEM Passport for Inclusion contributes to the achievements of equality and diversity in STEM careers by supporting and promoting STEM education and careers to SocioEconomically Disadvantaged (SED) girls across Ireland. The programme makes a huge impact on a personal level for many students.

Marie is currently undertaking a Micro-credential course in mentoring for Equality, Diversity and inclusion at Maynooth University.

Marie is a member of the Sustainable Speakers, a Toast Masters group of people who are passionate about sharing information and encouraging actions to support sustainablity and circular economy. Marie is particularly focused on Intellectual Property for the circular economy and supporting collaboration that is necessary for a circular economy to be achieved and to thrive.

Marie participated in the “Speechcrafters” programme in Autumn 2022 for people having a shared vision around sustainability upskilling on speaking and delivery of presentations for communicating key issues to support innovation aimed at achieving a circular economy. Marie’s area of passion is: “IP for the circular economy”. Marie also delivered a speech on World Earth Day 2023 on “Innovation and Intellectual Property (IP)- Who owns what? and why does it matter for the Circular Economy?”

Marie is also on the firm’s Social Impact committee.

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Let's talk

If you would like to discuss how HGF could help you, contact one of our IP specialists.