
CMS has a longstanding reputation for competition and consumer protection law work, handling large mandates across Hungary in merger control, cartels, abuse of dominance, and consumer protection investigations. Szabolcs Szendrő leads the team, with extensive antitrust law experience. A specialist in competition law, Dóra Petrányi advises clients on cartel investigations and state aid issues. Aranka Nagy handles competition cases at EU level, while Márton Angyal assists with domestic and cross-border mergers concerning abuse of dominance.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- 'The team stands out for its exceptional professionalism, deep legal expertise, and consistently high quality of service. They provide clear, practical advice tailored to complex situations, always demonstrating a strong understanding of both local and international business contexts.'
- 'Excellent client care, responsiveness, and the ability to anticipate potential challenges. Collaboration with the team is seamless, and their ability to integrate diverse perspectives ensures that we receive prompt and commercially focused solutions.'
- 'CMS' dedication, precision, and commitment to delivering results make them a trusted partner and one of the most reliable teams in the market.'
- 'Szabolcs Szendrő stands out for his excellent legal acumen, practical mindset. We appreciate his problem-solving skills and his calm, client-focused approach.'
- 'Together, Márton Angyal, Aranka Nagy and Szabolcs Szendrő exemplify the firm’s strengths and make working with the practice an exceptional experience.'
- 'Its competition team is large, led by a renowned competition lawyer, and also has good senior lawyers specialised in competition law.'
Key clients
- Microsoft Magyar RTL Television Coca-Cola (Coca-Cola HBC Hungary) MOL OTP Bank ALDI Hungary Viagogo Airbnb Johnson&Johnson AmRest
Work highlights
Advised Microsoft in successful commitment negotiations with the HCA in connection with the AI-powered Copilot, previously known as Bing.
Represented Viagogo in a competition investigation initiated by the HCA in December 2019 relating to an alleged infringement of the prohibition of unfair commercial practices regarding consumers, and has been providing representation before Hungarian courts relating to the challenge of the HCA’s decision.
Assisting the Hungarian branch of German retailer ALDI in multiple competition control proceedings launched by the HCA, including both antitrust and consumer protection investigations.
Lawyers
Leading partners
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Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Szabolcs Szendrő
Other key lawyers
Dóra Petrányi; Aranka Nagy; Márton Angyal

