Mariella Orelli

Ramona Wyss is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law. Ramona, who practices law in Zürich, Switzerland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ramona is held by other top lawyers in the same geographic and legal practice area.

David Vasella is a partner on the Information Technology, Intellectual Property and Competition team. He is the co-head of the Regulated Markets, Competition, Technology & IP team, together with Hans Rudolf Trüeb. He advises and represents Swiss and international companies in all industries and at all stages of growth on questions concerning data and technology law. He specialises in data use, negotiating data-related contracts, data security issues, cloud projects and IT contracts a...

Fabienne Limacher is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Fabienne, who practices law in Zürich, Switzerland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fabienne is held by other top lawyers in the same geographic and legal practice area.

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...

Markus Pfenninger is a partner in the Transactions Team. His fields of expertise include capital market transactions, mergers & acquisitions, finance, restructurings, collective investment schemes as well as banking and insurance regulatory matters. He is a member of the International Bar Association’s (IBA) Task Force on the Financial Crisis and a past chair of the IBA’s Subcommittee on Legal Opinions as well as a past co-chair of the IBA’s Banking Law Committee. Born i...

Mark Reutter's practice focuses both on a comprehensive advising of clients who are active in the information and technology field and on the advising of other corporate and private clients in relation to technology, arts and entertainment, intellectual property as well as restructuring, insolvency and bankruptcy matters. Mark Reutter counsels Swiss and international clients and deals with the structuring, negotiation and implementation of projects and other commercial and contractual matters...

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...

Managing Partner & Certified Tax Expert David Hürlimann’s practice focuses on tax law, in particular taxation of groups, merger & acquisition, corporate restructuring, international tax and tax accounting. Other areas of his tax practice include banking, executive compensation and tax planning for high net worth individuals.David Hürlimann graduated from the Universities Zurich and Geneva in 1998. After serving as a law clerk at the District Court of Zurich for two yea...

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...

Hans-Jakob Diem is a corporate Partner at Lenz & Staehelin. He heads the firm's Corporate and M&A practice group and is the co-head of the Capital Markets practice group in Zurich. He has extensive experience in representing clients in a variety of corporate transactions, concentrating on mergers and acquisitions, capital market transactions, bank financings and corporate governance matters. Hans-Jakob Diem is regarded as a leading corporate practitioner in Switzerland and is regularl...