CEE/CIS - Hungary
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CMS

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CMS boasts a large, multidisciplinary team covering the full spectrum of TMT law with niche expertise in data protection and cybersecurity, particularly in emerging technologies such as AI, fintech, robo-advisory, software law and digital infrastructure. Many team members bring dual experience as in-house counsel for major TMT companies and external advisors at international firms, supported by the firm’s extensive global network. Led by seasoned TMT practitioner Dóra Petrányi, active in AI and digital civil code initiatives, the team includes newly appointed partners Katalin Horváth, a specialist in fintech, IT and AI, and Ágnes Sólyom, an IP and software law expert. Other key practitioners include Márton Domokos , with expertise in IT law and AI; Eszter Csapó, with expertise in licensing and advertising; and Péter Homoki, who focuses exclusively on IT and telecommunications law.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Their deep industry knowledge, combined with a forward-thinking approach to emerging tech trends, makes them a standout in the field. The team's collaborative spirit, innovative use of technology in case management, and commitment to diversity set them apart from other firms.’

  • ‘Dóra Petrányi’s leadership in the TMT practice is remarkable. She brings a strategic vision that drives projects with confidence and clarity, making her an invaluable partner in any deal. Her deep industry knowledge and ability to foresee potential challenges before they arise differentiate her from the competition. Her ability to communicate complex legal matters in a clear and concise manner is a quality I’ve greatly valued.'

  • 'Eszter Csapó stands out for her profound expertise in technology law and her ability to break down complex issues into actionable advice. Her innovative approach and strong problem-solving skills have consistently impressed me. What truly sets her apart is her commitment to client success, always going the extra mile to ensure optimal outcomes. Her responsiveness and clarity make her a standout in the field.'
  • 'Péter Homoki's deep expertise in technology law, proactive problem-solving, and understanding of both local and international regulations truly set him apart. Péter’s responsiveness, clear communication, and commitment to practical, business-oriented solutions make him an invaluable partner in navigating complex legal challenges.’

  • ‘CMS is able to take into account the client's business aspects in legal work. Thus, the result will be much more useful and directly usable.’

  • ‘The CMS team has a deep understanding of the business processes and they communicate very clearly the possible legal solutions. They are also aware of the latest technical innovations and always have their answers to the legal issues emerging in connection with new technologies.’

  • ‘Katalin Horváth has a real passion for delivering exceptional legal solutions to clients. Her wide knowledge of even the technical and business sides makes her a very reliable lawyer.'

  • ‘The team has good dynamics and cooperates very closely. All the communication is clear, organised, well-prepared and highly professional. The delivered value is exceptional.’

Key clients

  • 4iG
  • Allianz Hungary
  • BP
  • Canon Europe
  • Kyndryl Holdings, Inc
  • Magyar Telekom Plc., IT Services Hungary
  • Microsoft Hungary
  • OTP Bank Plc. and OTP Mobile Ltd., HelloPay PLC, fintech subsidiaries of OTP Bank
  • RTL Group
  • Samsung Electronics

Work highlights

  • Advised Microsoft on a wide array of technology and commercial matters and their strategic projects for over a decade.
  • Providing overall support for the AI Coalition's work, including, among other initiatives, the Hungarian implementation of the AI Act.
  • Advising RTL Group on a wide array of technology and commercial matters and their strategic projects for over a decade.

Lawyers

Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Dóra Petrányi
Hall of fameCMS
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Eszter Csapó
CMS
Márton Domokos
CMS
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Ágnes Sólyom
CMS
Katalin Horváth
CMS

Practice head

The lawyer(s) leading their teams.

Dóra Petrányi

Other key lawyers

Katalin Horváth, Ágnes Sólyom, Márton Domokos, Eszter Csapó, Péter Homoki