Dr iur Marcel Dietrich > Homburger > Zurich, Switzerland > Lawyer Profile


Work Department

Competition, Regulatory, Real Estate.


Partner. Swiss and European competition and antitrust law, administrative and civil antitrust litigation, merger control including notifications before the Swiss Competition Commission and the European Commission, multinational merger control filings, regulated markets such as energy, healthcare and pharma, media and telecommunication, infrastructure and transport as well as public procurement.


Qualified in 1990. Joined Homburger in 1996, became Partner in 2001, Head of Homburger’s Competition and Regulatory practices.


German, English, French.


Swiss and Zurich Bar Associations, International Bar Association, Studienvereinigung Kartellrecht, ASAS association suisse du droit de la concurrence, ASA Association Suisse de l’Arbitrage.


Graduated from the Universities of Fribourg (lic iur, Dr iur) and Leicester (LLM).

Lawyer Rankings

Switzerland > Competition

(Leading individuals)

Marcel DietrichHomburger

Homburger is an established competition law counsel to a number of Swiss and foreign blue-chip clients. It has core capabilities in investigations and multi-jurisidictional merger control filings for which the practice works closely with the firm’s corporate and M&A department. The offering also includes leniency applications, dawn raids and sanction procedures. Practice head Marcel Dietrich and Franz Hoffet both have over 30 years of experience. Richard Stäuber is noted for ‘delivering work in very high quality.‘ Associate Allegra Arnold handles administrative and civil antitrust litigation.

Switzerland > Healthcare and life sciences

Homburger fields a team of ‘strong subject matter experts‘ across different specialisms: Dieter Gericke is a specialist in advising healthcare and life sciences clients on corporate law and transactions, while Andri Hess ‘provides strong support on IP litigation matters.Gregor Bühler covers regulatory aspects, and Marcel Dietrich is the name to note in competition and antitrust queries; together they head up the firm’s practice. Luca Dal Molin is sought after for data protection questions. Daniel Häusermann advises on financing transactions.

Switzerland > Leading firms: German-speaking Switzerland

The team at Homburger has a comprehensive offering with particularly deep experience in capital markets, banking and finance as well as corporate and M&A, tax and dispute resolution. Marcel Dietrich and Franz Hoffet head the team’s regulatory and competition service offering. Banking, finance and capital markets matters are the key focus areas of Benedikt Maurenbrecher, Jürg Frick and René Bösch while Daniel Daeniker has a corporate M&A focus and Dieter Grünblatt covers the tax aspects of transactions. Balz Gross and Felix Dasser specialise in litigation and arbitration. Also noted is intellectual property expert Georg Rauber.

Switzerland > Regulatory, compliance and investigations

Homburger enjoys a stellar reputation for its regulatory, compliance and investigations practice. The team can draw from cross-departmental expertise in litigation, corporate, banking and IP, and has an international outlook. Key clients are particularly from the banking and finance sector, but the group is also sought after by Swiss and foreign corporations. Flavio Romerio is an established advisor in compliance and investigations matters. Claudio Bazzani is noted as a specialist in internal investigations, while Katrin Ivell, noted for her ‘excellent oversight‘, covers anti-bribery, corruption and anti-money laundering cases. Marcel Dietrich is the key contact for regulatory queries.

Switzerland > Public law

At Homburger, advice on public law is provided in particular in conjunction with the regulatory, compliance, investigations, financial market regulation, competition and arbitration teams. The unit is therefore particularly experienced in acting for clients from the regulated sectors, frequently acting in compliance matters and investigations where public law matters are at the centre, such as financial services, energy, transport, telecoms, and construction. Further, advice is provided to municipal, cantonal and federal bodies. The team heads Marcel Dietrich and Mariella Orelli are experienced in competition and public procurement matters as well as administrative proceedings.

Switzerland > Real estate and construction

Homburger assists clients with real estate transactions as well as with the regulatory and contractual aspects of property developments, construction and leases. Daniel Hasler has a focus on M&A, capital markets, and financing matters. Certified real estate and construction law specialist Stefan Gäumann, who made partner in 2021, is noted for his ‘very deep real estate know-how‘, among others with respect to the planning and implementation of construction projects as well as of arbitration and court proceedings. Marcel Dietrich is the key contact for competition and administrative law.