The team at Siegler Bird & Bird Ügyvédi Iroda assists clients in developing and implementing domestic and multi-jurisdictional dispute resolution strategies, including drafting and negotiating settlements. The firm’s varied case load includes tax, commercial real estate, product liability, and white collar litigation work. Leading the team is László Nanyista, who advises private and state-owned companies in administrative and court disputes. He is joined by IP practice head Bálint Halász, who has extensive knowledge of the IT, tech, and pharmaceuticals industries, with a particular focus on patent and trade mark litigation. Mihály Harcos specialises in tax disputes, Viktor Kodela handles bankruptcy, tax, and real estate litigation and arbitration work. The team expanded their offerings with the addition of Milan Kohlrusz and Katalin Bendzsel-Zsebik, who both joined in January 2025.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- ‘László Nanyista's approach is firmly grounded in a deep understanding of each client’s business objectives, enabling him to anticipate potential challenges and design innovative, practical solutions well before they become obstacles. This combination of foresight, business acumen, and legal expertise makes him an invaluable partner in any transaction.'
- 'Vivien Kovács is a dedicated and enthusiastic lawyer who brings a fresh perspective to our team. She consistently shows a strong willingness to learn and a strong commitment to her work.’
- ‘Viktor Kodela is a very capable dispute resolution lawyer with surprisingly extensive expertise in several sectors. He responds very quickly to all our questions and provides clear and thorough answers. Viktor is always reachable, very trustworthy and handles tough situations with professional excellence.'
- ‘The lawyers are exceptionally experienced and skilled in handling even complex matters as well. They excel at identifying unforeseen complexities, providing immediate recommendations, and assisting throughout implementation.’
- 'Their attentiveness and commitment not only resolved issues efficiently but also provided reassurance and stability during what could otherwise have been a highly stressful period. This exceptional level of client service made a meaningful difference to the outcome and to our overall experience.'
- ‘What has truly set them apart is their unwavering dedication and responsiveness throughout the process. Every question was answered with clarity and precision, and every concern was handled with genuine care and professionalism.'
Key clients
- MÁV
- Hungarian State
- OMV
- Lloyd’s Insurance Company / AIG / Liberty
- GEALAN Formteile
- Duna Terasz Grande
- Heineken
Work highlights
Representing the Hungarian subsidiary of GEALAN Formteile in various corporate lawsuits and an employment lawsuit initiated by a former executive of the Hungarian entity also being a minority shareholder.
Representing MÁV, the Hungarian national railway company and the Hungarian State as defendants in two lawsuits initiated before the U.S. District Court for the District of Columbia by certain individuals seeking restitution of property allegedly taken by Hungary during World War II.
Represented the Hungarian subsidiary of OMV in arbitration proceedings initiated in relation to a lease agreement dispute.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
László Nanyista
Other key lawyers
Bálint Halász; Mihály Harcos; Viktor Kodela; Milan Kohlrusz; Katalin Bendzsel-Zsebik; Mátyás Schultheisz; Vivien Kovács