Oppenheim Law Firm Budapest

Not your average law firm

Oppenheim offers all the benefits of big law, but without the hassles.

We are one of Hungary's largest law firms, but we all work on the same floor and know each other.

We have been around for over 30 years, but we are still interested in you: what makes you tick, what you want to achieve, what makes you happy.

Our lawyers are highly qualified and experienced, but they are also real people who will help you solve your legal problems in a way that really suits you.

We are a Hungarian law firm, but we have been working for international clients for over three decades.

We have our processes, but we are happy to throw away the cookie-cutter, roll up our sleeves and come up with something we have made especially for you.

So if you want a lawyer who does an excellent job AND can talk about flying planes, spotting trains, collecting coins, making wine, writing literature, or failing as a musician, you have come to the right place!

MORE ABOUT US

People

Chief accountant
Mariann is the Chief Accountant at Oppenheim, joining us in 2023.

Partner

Gergely specializes in regulated industries, especially energy, energy efficiency, renewables, hydrocarbon exploration and production, waste management, pharmaceutical and healthcare sectors, transport, e-mobility, and automobile industries.
His clients are mainly companies active in the energy market, such as electricity, renewables, natural gas, district heating, as well as energy consultants...

Energy and Regulated industries

Energy and Natural Resources

Associate

Gabriella’s practice focuses on M&A transactions, including share deals, assets deals, joint venture agreements and other type of investments.

She handles matters for both sellers and purchasers, as well as for the investors or founders.

She is comfortable in working for both for domestic and international clients looking for investment opportunities in Hungary.

Gabriella advises on transac...

Corporate and M&A

Financial Services Consumer Goods and Retail Infrastructure and Transport Media, Publishing and Entertainment Manufacturing

Partner

David specialized in regulated industries; particularly in the sectors of energy, energy efficiency, renewables, mining, environmental protection, waste management, auto industry, e-mobility, projects and infrastructure, life sciences, pharma, governments and public sector.
His clients are mainly companies active on the energy market, such as electricity generators and traders, natural ga...

Energy and Regulated industries

Life Sciences, Pharma Governments and Public Sector Energy and Natural Resources

Senior Counsel

Gábor’s practice focuses on mergers and acquisitions and corporate law.

His clients are typically from the financial services, automotive, consumer goods, and retail industries.

He regularly handles legal due diligences, shareholders’ agreements and corporate restructurings.

Gábor further advises on matters of civil and commercial law.

Corporate and M&A

Automotive Financial Services Consumer Goods and Retail

Senior Counsel

Agnes’s practice focuses on financial services related, insurance, capital market regulatory matters, and capital market and M&A transactions.
Her clients are financial institutions, investment service providers, fund managers, participants of the insurance sector, and venture capital targets and investors.
Agnes is experienced in post-trading services and financial industry remunerat...

Corporate and M&A

Financial Services

Partner

Tibor’s practice focuses on civil litigation and commercial litigation, with a focus on personal rights, press law, property law and contract law.
His clients are primarily from the construction, automotive and financial services sectors. Clients include domestic and foreign companies and executives.
Well known for his experience in matters related to bankruptcy and insolvency law, enfor...

Disputes, Litigation and Arbitration

Financial Services Construction & Construction Materials Media, Publishing and Entertainment Real Estate

Counsel

Zoltán’s practice focuses on advising domestic and international clients with respect to corporate matters and M&A transactions, such as share deals and asset deals. He frequently advises sellers and buyers in relation to such M&A transactions.

Zoltán is experienced in private equity transactions and frequently advises investors and founders.

He handles M&A transactions in the private healthc...

Corporate and M&A

Automotive Consumer Goods and Retail Life Sciences, Pharma Real Estate Technology and Innovation Energy and Natural Resources

Junior Associate

Patrik’s practice focuses on Corporate and M&A

Sectors Patrik specialises in include capital, financial and insurance market regulations as well.

Corporate and M&A

Financial Services

Senior Counsel

Péter’s main areas of practice include cartel and, dominant position and other antitrust cases, merger control notifications, state aid related advice and consumer protection investigations. He has extensive experience in the competition law analysis of various sales and distribution models as well as marketing campaigns.

Antitrust, Competition and Trade

Financial Services Life Sciences, Pharma Media, Publishing and Entertainment

Partner

Mark is a Founding Partner of Oppenheim and Head of our Real Estate Practice since 2007.

He has over two decades of experience in advising key players of the Hungarian real estate market and has considerable experience and expertise in handling real estate transactions across all major sectors.

He is a permanent legal consultant to a number of international real estate agencies in Budapest...

Real Estate

Finance Assistant

Zoltán works in Oppenheim's finance department and is responsible for invoicing.

Junior Associate

Réka’s practice focuses on the energy sector.

Her clients are typically natural gas and electricity traders.

She specialises in the relations of civil law and administrative law.

Energy and Regulated industries

Energy and Natural Resources

Associate

Eszter mainly advises on competition and commercial law related questions.
She has expertise in consumer protection, antitrust, abuse of dominance and merger control.
With decade of experience in the FMCG sector, Eszter regularly advises clients at various levels of the supply chain on commercial law issues.
Her clients are mainly from the agriculture and food, consumer goods and retail, auto...

Antitrust, Competition and Trade

Agriculture and Food Automotive Consumer Goods and Retail Technology and Innovation

Accountant
Márta workes as an accountant at Oppenheim since 2018.

Senior Counsel

Julia's practice is partly focused on compliance, and internal compliance in particular, giving her a broad overview of professional and occupational expectations, as well as of rules in a wide range of market segments.

She is familiar with the contractual aspects of construction projects and corporate transactions, and civil and corporate litigation.

She has been dealing with copyright mat...

Corporate and M&A

Automotive Financial Services Construction & Construction Materials Consumer Goods and Retail Real Estate Manufacturing

Partner

Attila’s practice focuses on transactional advice in M&A, restructuring and joint venture transactions, as well as general corporate and commercial matters.

His experience is focused primarily on the TMT, consumer goods, and education sectors.

Corporate and M&A

Junior Associate

Lili’s practice focuses on investments by foreign companies in Hungary, offering legal advice to companies and representing legal entities in disputes in the Hungarian courts.

Her clients are both Hungarian and foreign companies from the construction, automotive and real estate sectors.

Lili works on a wide range of legal disputes including, economic disputes, complex construction disputes, d...

Projects and Infrastructure

Legal Assistant
Noémi is a legal assistant at Oppenheim since the summer of 2022, focusing on KYC and supporting the office compliance processes.

Associate

Eszter advises on competition and consumer law issues.

Her experience in the real estate sector enables her to advise on competition law issues arising in connection with real estate investments.

Her clients are typically from the real estate sector, FMCG and retail and the automotive industry.

Antitrust, Competition and Trade

Automotive Consumer Goods and Retail Real Estate

Legal Assistant

Judit has been supporting the Corporate team as a legal assistant since 2021.

Senior Counsel

Petra’s practice focuses on the energy market.

Her clients are mostly from the electricity and natural gas sectors.

Well-versed on Health and Labour law matters.

Energy and Regulated industries

Energy and Natural Resources

Legal Assistant
Eszter started working as a receptionist at Oppenheim in 2016, and then moved to legal assistant in search of new challenges. She has been in this role since 2019.

Facility manager
Erika has worked in the back office team at Oppenheim for over 20 years.

Partner

Bulcsú’s practice focuses on mergers and acquisitions, company law, transactions, and restructurings.
His clients are extremely varied, including media, energy, health care, and financial institutions, as well as telecommunications, manufacturing and IT companies.
Bulcsú also advises clients on commercial contracts, and investment and shareholders’ agreements.

Corporate and M&A

Financial Services Media, Publishing and Entertainment Manufacturing Energy and Natural Resources

Partner

Since the 1990s, Klára has worked on high-volume transactional work for dairy, beer and paper companies, as well as with clients in the energy, media and telecommunications sectors.

Klara has also represented clients in litigation and public procurement appeals.

Disputes, Litigation and Arbitration

Media, Publishing and Entertainment

Associate

Zoltán specialises mainly in energy and environmental law, as well as pharmaceutical regulation. Additionally, he has gained considerable experience in food law by identifying legal requirements for the conduct of various activities and by representing clients before various authorities.

Zoltán’s clients are mainly domestic and international companies fromregulated industries (e.g., energy, pha...

Energy and Regulated industries

Agriculture and Food Automotive Life Sciences, Pharma Manufacturing Energy and Natural Resources

Senior Associate

Sarolta's practice focuses on resolving complex legal disputes involving Hungarian and international parties through court proceedings, and arbitration.

Her clients range from Hungarian and foreign multinational corporations to foreign individual investors in Hungary. They come from a variety of sectors, with her practice often handling cases from the construction, venture capital, advertising,...

Disputes, Litigation and Arbitration

Construction & Construction Materials Life Sciences, Pharma Real Estate

Counsel

Janos is a member of the Real Estate Practice with over 10 years of experience advising leading players of the Hungarian real estate market. He was involved in several major investment transactions and has extensive experience in providing full-scope assistance with development projects.

Additionally, he has advised several clients on commercial leases.

Real Estate

Senior Associate

Barnabas' practice focuses mainly on intellectual property.

Barnabas advises on trademark, design and domain name matters.

Intellectual Property

Senior Associate

Gergő’s practice focuses on court proceedings; in particular he is specialised in contentious civil court proceedings.

Gergő obtained significant experience in enforcement and liquidation procedures from non-contentious court proceedings.

Gergő also provides advice on strategic legal matters related to or prior to court proceedings.

Disputes, Litigation and Arbitration

Construction & Construction Materials Media, Publishing and Entertainment Manufacturing

Office Manager

Kinga joined Freshfields Bruckhaus Deringer in 2001, and after 6 years as a legal assistant, she tried her hand in other fields. She returned to Oppenheim in 2022 and since then she is leading the back office team.

Receptionist

Mária joined Freshfields Bruckhaus Deringer in 2001 and continued her career as a receptionist at Oppenheim.

Senior Associate

Eva’s practice mainly focuses on corporate law and corporate related dispute resolution.
She is very comfortable with the operation of business entities and is well known for the time and attention she devotes to corporate related litigious and non-litigious proceedings, as well as to the legal representation of business entities in front of courts and other authorities.
Eva’s expe...

Corporate and M&A

Agriculture and Food Automotive Media, Publishing and Entertainment Real Estate Technology and Innovation

Senior Associate

Rita’s practice focuses on corporate and M&A.

Her clients are typically financial and professional investors.

Well known for the time and attention Rita devotes to clients engaged in life sciences.

She is well-versed with technology and innovation matters.

Rita’s experience in the due diligence of companies operating in various industries enables her to handle legal matters in multiple fi...

Corporate and M&A

Media, Publishing and Entertainment Manufacturing

Finance Manager
László is Chief Financial Officer at Oppenheim since summer 2019.

Receptionist
Anna joined Oppenheim in 2023.

Junior Associate

Mark is an extremely talented junior associate of Oppenheim’s real estate practice who has already gained significant experience in assisting commercial real estate development projects and major investment transactions.

Real Estate

Counsel

Zoltán is responsible for the operation of Oppenheim’s Austrian office, thus, his practice mostly centers on corporate issues and M&A, as well as matters linked to real estate and regulated industries.

His clients are typically from the sectors of agriculture and food, construction and construction materials, consumer goods and retail, infrastructure and transport, media, publishing and enterta...

Real Estate

Associate

Kristóf focuses on intellectual property, in particular trademarks, commercial law, and dispute resolution.

His experience in the field of consumer protection enables him to support his clients in consumer protection matters.

Kristóf has significant experience in the field of claims enforcement, whether in domestic or European orders for payment proceedings, liquidation proceedings, or litiga...

Intellectual Property

Automotive Consumer Goods and Retail Life Sciences, Pharma Media, Publishing and Entertainment

Partner

Zsolt’s practice focuses on employment law.
His clients are typically from the banking, automotive, services and retail sectors.
Zsolt deals with all areas of employment law, including advisory, drafting and representation.
He is an expert of organisational restructurings, organisational development, change management and hybrid working models.
Zsolt also has significant...

Employment

Automotive Consumer Goods and Retail

Senior Counsel

Lívia’s practice focuses on employment law.

Her clients are typically from the automotive, manufacturing and financial services sectors.

Lívia deals with all areas of employment law, including day-to-day advice to employers, drafting contracts, terminations, and internal regulations, representing employers in litigation. She is an expert in working time arrangements, organisational restructur...

Employment

Automotive Financial Services Manufacturing

Associate

Judit has been working in the real estate law practice since 2014, where, in addition to the classical professional assistance in investment transactions and real estate development projects, she also advises clients in relation to ESG rules applicable to the real estate sector, as well as non-sector-specific ESG compliance rules.
She has experience in the field of legal advice and drafting of...

Real Estate

Junior Associate

Tamás provides legal advice on employment law.

Employment

Junior Associate

Patrik’s practice focuses on resolving legal disputes in the field of civil and labour law involving Hungarian and international parties through court proceedings and arbitration.

Disputes, Litigation and Arbitration , Employment

Counsel

István’s practice focuses on civil and commercial litigation, in particular defamation and personality rights-related lawsuits and contractual disputes.

His clients are typically from the automotive, construction and construction materials, as well as media, publishing and entertainment sectors. His clients include domestic and foreign companies.

István is well known for the time and attenti...

Disputes, Litigation and Arbitration

Automotive Construction & Construction Materials Media, Publishing and Entertainment

Associate

Dóra’s practice focuses on the protection of intellectual property rights.
Well-versed in copyright law, and she devotes considerable attention to trademark issues.
Dóra advises on copyright law, participates in enforcement proceedings, prepares licence and exploitation agreements, and deals with trademark registration, opposition, cancellation and litigation matters.
Dóra specializes in the foll...

Intellectual Property

Consumer Goods and Retail Media, Publishing and Entertainment

Paralegal / Legal Assistant
Adrienne graduated as a paralegal from the Janus Pannonius University in 2005. She has worked as a legal assistant at Oppenheim since 2011. She supports the IP team in a paralegal capacity.

Partner

Zsolt’s practice focuses on litigation in major cases with international aspects.

His clients are from various sectors, such as market leader construction companies, professional service providers, investors, and financial institutions. He deals with lawsuits of a considerably large scale, including disputes arising from major transactions or investments, contractual disputes of professional s...

Disputes, Litigation and Arbitration

Financial Services Construction & Construction Materials Real Estate

Junior Associate

Lili’s practice focuses on the resolution of civil and commercial law disputes through court proceedings and arbitration.

Lili works on a wide range of legal disputes, such as contractual disputes of companies, construction disputes and tort law lawsuits.

She is involved in complex, cross-border litigation cases requiring the application of international private law, EU law and foreign mat...

Disputes, Litigation and Arbitration

Legal Assistant
Ági joined Heller Löber Bahn in 1994 and has been working for us as a legal assistant ever since.

Senior Associate

Lilla’s practice focuses on corporate law and acquisitions. She provides clients with full scope corporate law advice from day-to-day corporate handholding matters, through mergers, demergers, and corporate transformations to global transactions.

Lilla provides legal advice to sellers and buyers, and both on the investors’ and the founders’ side in the course of acquisitions and investments....

Corporate and M&A

Automotive Consumer Goods and Retail Life Sciences, Pharma Real Estate Energy and Natural Resources

Treasurer
Tamás joined Oppenheim's Finance department in 2017.

Paralegal
Eszter joined Oppenheim in the autumn of 2022 as patent paralegal in the IP group.

ALL COLLEAGUES

Our
expertise

By sector

By practice

News

23 April 2025

Comparative Legal Guide: Litigation 2025

Our litigation team contributed to the Hungarian section in which the publication offers a comprehensive overview of the litigation landscape.

1 April 2025

New regulation in the TEÁOR nomenclature in Hungary

Effective as of January 1, 2025, the business activities of companies will need to be classified based on the NACE Rev. 2.1 (in Hungarian: TEÁOR’25) nomenclature. Helga Lieszkovszky, Oppenheim Law Firm’s expert, summarizes the key corporate law aspects of the new regulation.

1 April 2025

Amendments to the Electricity Act effective from 1 January 2025 and amendments to the KÁT scheme effective from 31 January 2025

As of 1 January 2025, the Act LXXXVI of 2007 on electricity (“Electricity Act”) has been amended in a number of aspects. The overarching aim of the amendment is to make the operation of the electricity system more transparent and efficient by making the DSO’s certain mandatory tasks easier and the capacities connecting to the medium and high voltage grids more predictable. The amendments will also ensure the transparency of procedures for the investors as well as the compliance with EU law, in addition to the policy objectives. In addition, the Mandatory Feed-in Tariff (KÁT

4 March 2025

Graffiti, pocket tabs and stripes: the most exciting fashion law cases of 2024

The fashion industry in 2024 continued to be full of exciting legal cases that raised a number of important questions about intellectual property protection. Below are five cases that have received a lot of attention and could set a precedent for the future. Written by Bernadett Dóra Kiss, attorney at law at Oppenheim Law Firm.

Our Vienna Office

Since 2012 Oppenheim has an Austrian branch office in Vienna to offer clients major business benefits in this vital commercial interchange between Eastern and Western Europe.

Korean Desk

In 1989, Hungary became the first country in Central and Eastern Europe to establish diplomatic relations with South Korea. Since then, over 300 Korean companies have entered the Hungarian market, fostering numerous business relationships. In response to the growing legal demand arising from these connections, Oppenheim established the Korea Desk in strategic partnership with the Korean law firm, Jipyong.

How can we help you?

Not your average law firm

Oppenheim offers all the benefits of big law, but without the hassles.

People

Our expertise

By sector

By practice

News

Comparative Legal Guide: Litigation 2025

New regulation in the TEÁOR nomenclature in Hungary

Amendments to the Electricity Act effective from 1 January 2025 and amendments to the KÁT scheme effective from 31 January 2025

Graffiti, pocket tabs and stripes: the most exciting fashion law cases of 2024

Our Vienna Office

Korean Desk

Our
expertise