Nina J. Frei

Florian Gunz Niedermann is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Florian, who practices law in Zürich, Switzerland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Florian is held by other top lawyers in the same geographic and legal practice area.

Reto Jacobs heads the Antitrust and Competition Team. He advises domestic and foreign companies with respect to all competition law issues, represents them before competition authorities and courts, and assists them in complex merger filings. Reto Jacobs advises also with respect to distribution systems and he supports various companies with respect to their antitrust compliance programs. He is lecturer at the University of St. Gall. Born in 1964, Reto Jacobs was educated at the University of...

Partner Reto Hunsperger acts as head of the insolvency and restructuring department at CMS Zurich.He specialises in litigation and arbitration. With this focus, he represents national and international companies and individuals before state courts and arbitral tribunals (under ICC Rules, Swiss Rules and CAS Rules), mainly in civil, enforcement and sport law matters. In addition, he serves as an arbitrator. A further focus of Reto Hunsperger lies in all sorts of domestic and international inso...

Partner Dr Patrick Sommer is Co-Head of the CMS Competition & EU Group. In this position, he jointly leads an international team of more than 170 competition lawyers. Patrick Sommer focuses on competition law, corporate law and M&A. Patrick Sommer has graduated from the University of St.Gallen in 1987 and was admitted to the bar in 1989. He has written his doctoral thesis on the relationship of Switzerland to the European Union and completed postgraduate studies at the Collège ...

Partner Dirk Spacek is partner and in charge of the practice groups TMC and IP. He primarily deals with new business models arising in the media-, internet- and technology(IT)-sector, data protection and intellectual property law. Dirk Spacek mainly advises clients from the media, technology, industry and financial services sectors on technology-related legal matters, in particular IT-contract law, outsourcing, data protection, Internet of Things (IoT), patent research and compatibility coope...

Martin Busenhart is a partner in the Tax Team. He advises on national and international tax matters and is specialised in domestic and international structuring of capital market transactions, acquisitions and divestments and tax-optimized structuring for relocations of entrepreneurs, partnerships and corporate groups. Martin Busenhart was educated at Zurich University (lic. iur. 1988) and graduated as Certified Tax Expert (1994). He has working experience as tax expert and tax partner with a...

Partner Mark Cagienard specialises in tax law, covering individual and corporate taxation both on a domestic and international level with a particular focus on corporate finance, M&A and VAT. Mark Cagienard assists clients frequently in obtaining tax rulings and represents them in front of courts and tax authorities. Mark Cagienard graduated from the University of Zurich in 2006 (magna cum laude) and was admitted to the bar in 2008. In 2012 he qualified as a Swiss Certified Tax Expert. In...

Partner Philipp Dickenmann is the head of the Dispute Resolution Practice Group of CMS Zurich. He also serves as core team member of the global CMS Dispute Resolution Practice Area Group as well as the CMS Commercial Practice Area Group. Philipp Dickenmann has extensive experience in commercial litigation and international arbitration. He acts as counsel and co-counsel, sole arbitrator and co-arbitrator in numerous national and international cases. This includes arbitrations conducted under t...

Partner & Member of the Steering Committee of the CMS Competition & EU Group Marquard Christen specializes in competition (antitrust) and public procurement law. Marquard advises Swiss and foreign companies on all aspects of Swiss and EU competition law (horizontal and vertical agreements, dominance abuse, merger control and civil antitrust law) and represents them in proceedings before competition authorities and courts. Over the past 15 years, he has gained special knowledge in vari...

Admitted to the Bar since 1978 Areas of practice: International banking law, antitrust law, corporate law, IT, internet and media law, Professor of Civil, Business and European Law at the University of Zurich, Board Member of the European Institute in Zurich, Co-Director of the Center for Information and Technology, Society and Law, Zurich, Co-Director of the Center for Financial Market Regulation, President of the Appeal Commission of the Swiss Exchange SWX, Visiting Professor at the Univers...