Mason Hayes & Curran LLP continues to stand out for its abilities in merger control, including headline mergers requiring notification at a national and EU level. In this regard, the firm has made a particular impression in media sector mergers, along with those in the energy and technology industries, especially US tech businesses. The group frequently advises private equity houses on merger control and other competition matters. It is also unique in having an economist at partner level in Michael Madden. Beyond merger control, it has a thriving practice in competition law enforcement, including investigations into the ticketing and motor insurance sectors. Competition litigation is another forte. Tara Kelly leads the team, which includes Dorit McCann, who joined from Beauchamps LLP in March 2023. Laura Durning and Liam Heylin are also key partners.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Unique cross-over from competition, state aid and technology providing full service from advisory to litigation. Sought after for experience in developing area of administrative fines for breaches of EU law. Enviable client roster of US tech and data clients based in Ireland making them market leader in these sectors.’

  • ‘Dorit McCann - new partner hire who is a stand-out competition adviser in Ireland, with practice rights in Northern Ireland and London experience.'

  • 'Michael Madden is a firm favourite for telecoms matters and tech expertise.'
  • ‘Dorit McCann has outstanding procurement and competition expertise. Michael Madden has excellent telecoms and competition expertise.' 

  • ‘I was impressed with their overall project plan and approach to what was an usual engagement. The partner I was dealing with also explained that other specialities within the firm were available at any time.’

  • ‘I was very impressed with Liam Heylin's attention to detail and his grasp of the brief.’

  • ‘What makes Mason Hayes & Curran the great organisation that it is, is the diversity of the skillsets of its staff. If you have any concerns or issues they will forward your query to the person best able to assist.'

  • 'Liam Haylin has been excellent and very professional. He also completed a workshop for all of the crisis management team on site.’

Key clients

  • FBD Insurance Plc
  • Meta Platforms Inc.
  • The Carlyle Group
  • Assa Abloy AB
  • Fane Valley Co-operative Society Limited
  • Clayton Dubilier & Rice
  • Equinor ASA
  • Statkraft
  • Science Foundation Ireland
  • Canada Pension Plan Investment Board

Work highlights

  • Acted for FBD in the CCPC’s long-running investigation into alleged price signalling in the motor insurance sector.
  • Advised Meta on the potential implications of competition law and emerging digital regulation on its data processing operations and GDPR compliance.
  • Advised a global healthcare company on a competition law counterclaim arising out of IP patent infringement proceedings against a competing pharmaceutical company before the Irish Courts.

Lawyers

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Tara Kelly

Other key lawyers

Michael Madden, Liam Heylin, Laura Durning, Dorit McCann