Nagy és Trócsányi Ügyvédi Iroda > Budapest, Hungary > Firm Profile

Nagy és Trócsányi Ügyvédi Iroda

Hungary > Dispute resolution Tier 1

The ‘outstanding‘ dispute resolution team at Nagy és Trócsányi Ügyvédi Iroda is involved in arbitration proceedings on both a national and international level. With a particular focus on tax, the group handles a range of relevant disputes, boasting a diverse and extensive clientele that spans various industries. Péter Nagy leads the team with a key focus on litigation, arbitration and tax law. ‘Stellar litigator’ Orsolya Kovács also focuses on tax litigation and tax administrative procedures, supported by György TiborfiGyörgy Kiszely covers banking and insolvency litigation and construction and property disputes, while Lúcia Detvay has particular experience in IP mandates and Mónika Vrancsik focuses on and commercial lawsuits. Balázs Karsai typically represents banks, automotive companies, agricultural and pharmaceutical businesses.

Practice head(s):

Péter Nagy


‘The team is well experienced.’

‘Orsolya Kovács is well experienced and ready to provide exceptional solutions.’

‘This is an outstanding dispute resolution team, one of the best in Hungary. ’

‘Orsolya Kovács is a stellar litigator with excellent strategic thinking. Balázs Karsai is also superb.’

‘The key strength is the never-give-up attitude of their team.’

Key clients

OTP Bank


MNV (Hungarian National Asset Management Inc.)

Raiffeisen Bank


Volvo/Renault Group

Semmelweis University




St. Elisabeth

Dunamenti Erőmű

Work highlights

  • Representing Volvo/Renault Group in numerous Hungarian court proceedings and out-of-court negotiations relating to a competition law infringement determined by the European Commission.
  • Representing Dunamenti Erőmű in damages litigation against the OEM caused by faulty repairs to a generation unit resulting in loss of power generation.
  • Representing Kedrion in a case before Hungarian courts against the Hungarian government’s subsidiary.

Hungary > Tax Tier 2

The tax team at Nagy és Trócsányi Ügyvédi Iroda is active in the contentious space, representing clients in disputes before courts ranging from the Hungarian Constitutional Court to the European Court of Justice. Péter Nagy represents national and multinational corporations in significant litigations and leads the team alongside Orsolya Kovács, who also focuses on disputes, and has experience appearing before the Hungarian Supreme Court. Lúcia Detvay‘s litigation and arbitration experience spans commercial, competition and tax matters, while György Tiborfi focuses on cases related to tax and liquidation issues.

Practice head(s):

Orsolya Kovács; Péter Nagy

Other key lawyers:


‘International, complicated and high-value cases. Significant language skills, huge professional experience and knowledge are their greatest strengths. The relationship with me and my office, as a client, was and is very correct, their invoicing is appropriate. In my opinion, their service is excellent.’

‘Péter Nagy – his strengths are the huge professional experience, the factual knowledge, significant litigation practice, strong-mindedness, he is a go-ahead lawyer.’

‘Orsolya Kovács – her strengths are thorough knowledge and precise document editing.’

‘Wide range of knowledge of various areas of law, be it competition, litigation, tax or employment. Very quick response to all inquiries.’

‘The practice, led by Orsolya Kovács, is like a one-stop-shop, and provides complex, thorough and well-designed responses, including recommendations and solutions, which are beneficial to the utmost for our business.’

Hungary > Banking, finance and capital markets Tier 3

Financial regulation is a core focus for the banking and finance team at Nagy és Trócsányi Ügyvédi Iroda. The group also advises on restructuring and insolvency matters, as well as credit facilities and collateral agreements. Practice head György Kiszely specialises in regulatory advice, regularly representing clients before the financial regulatory authority, and Zóra Lehoczki’s practice centres on financial regulatory issues and investment services. Balázs Karsai and Mónika Vrancsik bring expertise in banking litigation to the group.

Practice head(s):

György Kiszely

Key clients

OTP Bank

Raiffeisen Bank Hungary

Work highlights

  • Advising OTP Bank on a wide variety of matters on a continuous basis, with special regard to complex contentious cases and insolvency-related issues.

Hungary > Commercial, corporate and M&A Tier 3

Nagy és Trócsányi Ügyvédi Iroda provides the full spectrum of commercial, corporate and M&A advice, supporting its diverse clientele from due diligence and structuring to closing of transactions. Practice head Ildikó Varga is experienced in cross-border transactions and regularly advises multinational companies on their inbound investments or acquisitions in Hungary. Balázs Karsai advises commercial banks, as well as agricultural and pharmaceutical companies.

Practice head(s):

Ildikó Varga

Other key lawyers:

Balázs Karsai; Csaba Pigler


‘This firm always responds quickly, and the answers we receive are accurate, comprehensive and easy to understand.’

‘They are great understanding our problems, providing several potential solutions to them. We can collaborate with any of the team members to find the best option together.’

‘The team provides precise, practical service with great response times.’

‘The team is very responsive and attentive to detail. They have specific capabilities with tax issues and corporate matters with foreign jurisdictions.’

‘Csaba Pigler is helpful and detail oriented.’

Key clients



Amphenol ICC






CEVA Phylaxia

Hungary > Competition Tier 3

Nagy és Trócsányi Ügyvédi Iroda‘s competition team regularly represents clients before the HCA and domestic courts, with expertise spanning merger control proceedings, cartel cases and consumer protection matters. Orsolya Kovács leads the team, regularly representing clients before the Constitutional Court of Hungary and the CJEU. Balázs Karsai is an expert in state aid clearance and cartel damages cases. Lúcia Detvay is a key contact for technology clients.

Practice head(s):

Orsolya Kovács

Other key lawyers:


‘Very detailed analysis of competition-related matters and thorough preparation. Orsolya Kovács and Lúcia Detvay are the key members of the practice dealing with our company’s matters.’

‘The team has excellent flexibility and broad experience.’

‘The work is completed on time with high levels of precision.’

Key clients

Ministry of Justice of Hungary


Volvo/Renault Group

OTP Bank


Work highlights

  • Representing Volvo/Renault Group in numerous Hungarian court proceedings and out-of-court negotiations that relate to competition law infringement determined by the European Commission.
  • Representing Hungary, as an intervenor, upon assignment by the government, in twin atomic energy cases.

Hungary > Real estate and construction Tier 4

Following recent market trends, the real estate and construction team at Nagy és Trócsányi Ügyvédi Iroda advises on a growing number of construction projects in the battery production and e-mobility sectors. The team advises national and international clients on their retail and office portfolios. Managing partner Balázs Karsai heads up the practice.

Practice head(s):

Balázs Karsai


‘The team has great experience in real estate matters and can provide tailored solutions to all our needs.’

Key clients

Royal Thai Government and the Thai Embassy

Hungary > Employment

Led by managing partner Balázs Karsai, the employment team at Nagy és Trócsányi Ügyvédi Iroda has extensive experience in the preparation of employment-related documents. The practice regularly provides support throughout restructurings, outsourcings and redundancies.

The firm: Nagy és Trócsányi was founded in 1991, turned into a limited professional partnership (in Hungarian: ügyvédi iroda) in 1992, with the aim of offering sophisticated legal services. The firm continues to seek excellence in a comprehensive and modern practice, which spans international commercial and business law. The firm’s lawyers provide clients with advice and representation in an active, thoughtful and ethical manner, with a real understanding of clients‘ business needs and the markets in which they operate.

The firm is one of the largest home-grown independent law firms in Hungary.

Nagy és Trócsányi is a legal entity and registered with the Budapest Bar Association.

All lawyers of the Budapest office are either members of, or registered as clerks with, the Budapest Bar Association. Several of the firm’s lawyers are admitted attorneys or registered as legal consultants in New York.

The firm advises a broad range of clients, including numerous multinational corporations.

Nagy és Trócsányi is the exclusive member firm in Hungary for Lex Mundi – the world’s leading network of independent law firms with in-depth experience in 100+ countries worldwide.

Main areas of practice
Banking and finance/project finance
Key clients: OTP Bank, Raffeisen Bank, HCL Technologies
Contact: Dr György Kiszely
Tel: +36 487 8718

Key clients:
Volvo, LG, Honda, OTP Bank
Dr Orsolya Kovács
+36 1 487 8717

Key clients: Scania, Hungarian National Asset Management Inc., Amphenol,  OTP Bank, HCL Technologies
Contact: Dr Ildikó Varga
Tel: +36 1 487 8799

Litigation and arbitration
Key clients: OTP Bank, Strabag, Government of Hungary, FGSZ, Invivo Group, Kedrion, Hungarian National Asset Management Inc., MAVIR,  Semmelweis University, Raiffeisen Bank, National Instruments
Contact: Dr Péter Nagy
Tel: +36 1 487 8787

Key clients: CBA, KPMG, KLM, MVM, HCL Technologies
Contact: Dr Orsolya Kovács
Tel: +36 1 487 8717

Department Name Email Telephone
Managing Partner Dr Karsai Balázs +361 487 8714
Photo Name Position Profile
Vivien Ágics photo Dr Vivien Ágics Associate
Lúcia Detvay photo Dr Lúcia Detvay Associate
Balázs Karsai photo Dr Balázs Karsai Managing Partner
György Kiszely photo Dr György Kiszely Partner
Orsolya Kovács photo Orsolya Kovács Partner
Zóra Lehoczki photo Dr Zóra Lehoczki Associate
Vanda Mangliár photo Dr Vanda Mangliár Associate
Péter P Nagy photo Dr Péter P Nagy Partner
Dániel Nyulasi photo Dr Dániel Nyulasi Associate
Csaba Pigler photo Dr Csaba Pigler Partner
György Tiborfi photo Dr György Tiborfi Associate
Ildikó Varga photo Dr Ildikó Varga Executive Partner. Head of the corporate transactions group with significant experience and…
Mónika Vrancsik photo Dr Mónika Vrancsik Associate
Number of lawyers : 22
Lex Mundi