Team

Dr Marino Baldi advises on Swiss and international business law, particularly antitrust and competition law, the law of international trade relations, international investments and on European single market law. As the Swiss ambassador and a member of SECO’s Board of Directors, he led many international trade negotiations and played a critically important part in the current competition and single market law. He was a member of the Swiss Competition Commission and teaches European and international business law at the University of Zurich.

Dr Urs Brunner advises Swiss and foreign companies and private individuals on commercial law matters, particularly in the areas of employment law, organization and succession planning. He is the chairman or board member of many foundations, primarily non-profits.

Ralph Butz specializes in commercial and corporate law matters relating to Swiss and international companies. In particular, this includes employment and contract law as well as distribution, licensing and IP issues. Ralph Butz also has extensive experience in the area of Swiss and international inheritance law and in advising Swiss and international clients in estate planning, succession planning for businesses including its implementation.

Having already completed his traineeship at Prager Dreifuss, Livio Chiesa has been working for the firm as an associate since 2024. He advises national and international clients on contractual, corporate, debt enforcement and bankruptcy matters. Previously, Livio Chiesa gained legal experience at the District Court of Zurich and with a lawyer specializing in commercial law.

Guy Deillon focuses on domestic and international mergers and acquisitions as well as private equity transactions. Further, he assists companies in financings as well as on general corporate, stock exchange and capital markets law matters.

Guy Deillon's clients benefit from his strong focus on goals and results as well as his high sense of responsibility. His analytical strength and logical approach support his focus on the business perspective and problem solving. He always demonstrates a clear and distinct position in a diplomatic and collaborative spirit.

Gaudenz Domenig represents Swiss and foreign clients before Swiss courts and Swiss and international arbitration tribunals. He has proven experience of litigation in all areas of commercial law, including directors’, officers’ and auditors’ liability claims, international legal assistance and bankruptcy proceedings. Gaudenz Domenig also appears before state courts and Federal courts in New York. He has extensive experience in corporate mergers. He acts as a consultant and member of the board of directors for companies in a wide range of sectors.

Marcel Frey is a member of the Dispute Resolution and Private Clients Teams. He represents Swiss and foreign clients in court and arbitration proceedings. He also advises private individuals with enforcing civil claims in complex cases of white collar crime. Marcel Frey regularly advises clients in international judicial assistance proceedings and the recovery of illegally acquired assets. In addition, he specializes in the enforcement of Swiss and international decisions in Switzerland.

Marcel Frey is an excellent listener with a quick grasp, risk-aware and extremely meticulous analytically. Thus, he quickly conveys consensus and solutions to his clients. His openness and cosmopolitanism is a strong asset in international proceedings. Clients appreciate Marcel Frey's knowledge and drive, which he also readily contributes to the Vis Moot Court Trials for the promotion of young lawyers.

Dr Christoph Graber is head of the Insurance & Reinsurance Team. He is a past chair of the Insurance Committee of the International Bar Association and advises Swiss and foreign insurance and reinsurance companies on contentious and non-contentious matters, including representing them in court and in arbitration proceedings. He has vast experience in the areas of banking and financial services (professional indemnity and fidelity bonds), directors’ and officers’ liability, product liability and commercial general liability. Christoph Graber is also a member of the Dispute Resolution Team and represents clients in commercial and arbitration proceedings, particularly in the area of contractual and corporate law. 

Mohamed Hasnaoui is a member of the Dispute Resolution Team. He advises and represents domestic and foreign clients in civil and commercial litigation before Swiss courts, arbitration tribunals and authorities. He further focuses on domestic and cross-border debt collection and bankruptcy matters. He also advises start-ups and young entrepreneurs on contractual and corporate matters, including data protection and trademark law. In addition, he has extensive experience and practical knowledge in capital markets law and compliance.

Dr Martin Heisch is a member of the Dispute Resolution Team. He advises and represents domestic and foreign clients in civil and commercial litigation before Swiss courts, arbitral tribunals and authorities. He further focuses on national and cross-border insolvency and enforcement matters, including asset recovery. Martin Heisch also advises clients on contractual and commercial matters, particularly in the area of sanctions and compliance.

Andri Janett works as a trainee in the Zurich office of Prager Dreifuss with a focus on Corporate & M&A.

During his studies, he worked in a Zurich law firm as a student assistant and librarian. After completing his substitute period, he will sit for the Zurich bar exam.

Dr Gion Jegher is a member of the Dispute Resolution, Insolvency & Restructuring and Banking & Finance Teams. He is a real expert in matters of private international law. This area addresses all legal issues arising in cross-border cases, such as insolvency of multi-national companies or transnational litigation.

Raphael Keller advises and represents Swiss and foreign clients in litigation and enforcement matters. He focuses particularly on private real estate and construction matters as well as construction-related and general public liability and insurance cases. He also regularly advises clients on issues relating to financial market and corporate law.

Raphael Keller feels particularly at home in complex matters and challenging mandates: this is where he can bring his professional expertise, extensive experience, and analytical and creative skills to bear. He works carefully and efficiently. Raphael Keller is open, sociable and always creates a positive atmosphere and team dynamic. These attributes, as well as his loyalty and consensus-orientation are highly valued by his clients. When it comes to disputes, he is objective and determined, remains calm and argues convincingly with a clear line.

Bernhard Lauterburg is an experienced antitrust lawyer. His practice includes antitrust investigations and advice on contract drafting and antitrust compliance. In addition, he is active in arbitration and public procurement law. He also has in-depth knowledge in the World Trade Organisation, investment protection and state aid.

Bernhard is independent in thought and action. Clients appreciate his quick grasp of complex issues and his focus on facts and solutions. He always keeps track of all relevant details and combines them into a clear and stringent argumentation.

Joëlle Marciano has been a lawyer at Prager Dreifuss since 2024. She is a member of the Dispute Resolution Team and the Insurance and Reinsurance Team. She advises and represents Swiss and foreign clients in state courts and arbitration tribunals and deals with national and international insurance cases. 

Mark Meili advises companies in company and contract law matters, focusing mainly on corporate finance and bankruptcy proceedings. From 2017 to 2018, Mark Meili was seconded to an alternative investment fund in London which specialized in distressed debt.

On the one hand, he is highly qualified and very sharp, but he is also a good listener. It is Mark Meili's positive attitude, consistency and loyalty that make him a pleasant partner even in long and intensive cases.

Mark Meili is a member of the editorial team of legalis brief - Fachdienst Gesellschaftsrecht (a Swiss corporate law newsletter).

Dr Rahel Nedi deals with Labour Law, Data Protection and Dispute Resolution. She is also a member of the Start-up Desk. She advises a national and international clientele, private individuals and companies. In addition, she is a lecturer at the University of Zurich and edits articles for the Swiss Journal of Employment Law (ARV/DTA).

Dr Tis Prager has specialized for more than 40 years in advising entrepreneurs, in particular in the succession planning of their business and personal assets and its practical implementation. His clients in this area benefit from his experience in corporate and tax law and in the administration of large assets. Tis Prager is Chairman of Hotel Zürich AG (Marriott), Scherer & Bühler AG and, pro bono, of the KEDA Foundation, which founded the CULINARIUM ALPINUM. These directorships, as well as the experience gained from other directorships with Hilti AG (Schaan), Bourquin SA, IE Engineering AG, etc. underlie his expertise in strategy and governance.

Dr Christian Schönfeld focuses on corporate and commercial law as well as the law of banking and capital markets and associated regulatory issues. Within these areas he has particular experience in collective investment law and Fintech (ICOs, tokenization etc.). He also advises on data protection matters and is a member of the Startup Desk. Before joining Prager Dreifuss as a lawyer, he worked as a research assistant for Prof. Dr. Urs Bertschinger at the University of St. Gallen.

Markus Seglias advises companies and individuals on national and international tax law. He has extensive experience in the areas of restructuring, M&A, financing and employee participation plans.

Prof. Philipp Zurkinden heads the Competition Team. He advises Swiss and international clients in antitrust proceedings (agreements affecting competition, abuse and mergers) and on state aid law. He has in-depth knowledge of EU competition law and therefore often works on multi-jurisdictional proceedings with established international law firms. He is also engaged in compliance consultancy. Before joining Prager Dreifuss, he worked at SECO on drafting the Cartel Act still currently in force and directed the training of the Competition Commission Secretariat in the new legislation. Philipp Zurkinden teaches competition law at the University of Basel.