Thouvenin Rechtsanwälte

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Markus Alder

Markus Alder has been a Partner with Thouvenin Rechtsanwälte since 2012. He specializes in corporate and commercial, mergers & acquisitions, venture capital as well as insolvency and restructurings. He advises his clients with regard to the incorporation of companies in Switzer-land, the drafting and negotiating of agreements and concerning the complex questions that may arise in the context of the acquisition or sale of a company. Markus Alder has also considerable expertise in employment law matters and the relocation of companies to Switzerland (including the obtaining of work and residence permits).

Pius Bumann

Pius Bumann has been a Partner with Thouvenin Rechtsanwälte since 2018. He practices primarily in the areas of inheritance law and succession planning, matrimonial property and divorce law, adult protection law, contract law as well as civil procedure law. Besides his advisory role he frequently represents his clients in court. Pius Bumann is a certified specialist SBA in inheritance law. He holds the notary patent of the Canton of Wallis.

Michael Bösch

Michael Bösch has been a Partner with Thouvenin Rechtsanwälte since 2011. He is specialized in international commercial, investment treaty and sport arbitration, in particular under the rules of the ICC, LCIA, Swiss Chambers’ Arbitration Institution but also ad hoc. In doing so, Michael acts primarily as counsel, increasingly also as arbitrator. In addition, he represents clients in state litigation. His additional expertise is corporate and commercial law where he represents domestic and foreign clients. He is a board member of several companies and acts as a secretary to the board of Zahnärztekasse AG and EOS Schweiz AG. Since many years, Lexology recommends Michael Bösch for arbitration and litigation. Legal500 also recommends Michael Bösch for litigation as well as for corporate, commercial and M&A. At the firm, Michael Bösch served as Managing Partner from 2022 until the end of 2025. Previously, he was HR manager and then responsible for the firm’s marketing/business development.

Martin Bürkle

Martin Bürkle has been a Partner with Thouvenin Rechtsanwälte since 2016. He specializes in corporate and commercial, mergers & acquisitions as well as joint venture projects and restructurings. Additional areas of practice include distribution, licensing and general contract law. Martin Bürkle has considerable experience in negotiating and drafting contracts on all aspects of corporate and commercial matters. Moreover, Martin Bürkle is a certified specialist in torts and insurance law of the Swiss Bar association and has vast experience in the fields of liability law, social insurance and insurance contract law. Besides his advisory role he frequently represents his clients in court.

Simon Hohler

Simon Hohler is a Partner at Thouvenin Rechtsanwälte in Zug and Zurich, Switzerland. Simon Hohler specializes in advising and representing clients in commercial disputes as well as in contract law matters. In addition, he regularly acts as an arbitrator in arbitration proceedings and advises companies and individuals in commercial law matters. His practice focuses in particular on domestic and international commercial arbitration and state court litigation as well as in enforcement and legal assistance matters. He frequently represents clients in disputes concerning contract and commercial law, torts and insurance law, construction law, M&A transactions as well as debt enforcement and bankruptcy law. Simon Hohler has been involved in numerous institutional arbitrations (e.g. Swiss Arbitration Centre, ICC, CAS and HKIAC) and ad hoc arbitrations where he advised parties or acted as counsel or arbitrator (sole arbitrator, co-arbitrator and chairman). He is co-chair of the ASA Local Group Central Switzerland and recognized by Chambers and Partners for his work as arbitrator as well as by Lexology (Who's Who Legal) as a "Future Leader" in arbitration. He is also an arbitrator on the arbitrator list of the VQF Financial Services Standards Association. He has represented clients in various state court proceedings, including the obtaining and defending against interim measures, the freezing of assets as well as the enforcement of judgments. He is recognized by Lexology (Who's Who Legal) as a "Thought Leader Global Elite - Commercial Litigation - Under 45" and a "National Leader - Switzerland - Commercial Litigation". He is registered in the attorney registry of the Canton of Zug.

Thomas Loher

T Thomas Loher has been a Partner with Thouvenin Rechtsanwälte since 2006. He specializes in corporate and employment law. Thomas has many years of experience in all aspects of employment law where he advises employers and private individuals (mainly senior management). In this field, he has also substantial experience in relocation, immigration and secondment matters. His corporate practice regularly includes M&A transactions, restructurings and corporate governance questions; he is presently also board member of various Swiss companies. In addition, Thomas established a close relationship with various private clients whom he advises on a great variety of legal aspects. Traditionally, he has also a strong affinity for sports related legal issues. Thomas Loher has served as Managing Partner at the firm since 2026, having previously held this role from 2018 until the end of 2021. He was previously responsible for Human Resources and served as the firm’s CFO for several years.

Laura Mahler

Laura Mahler has been an Associate with Thouvenin since 2023. Prior to joining us, she worked as a Junior Associate at a renowned Swiss business law firm in Bern and gained experience as trainee law clerk at the Superior Court of the Canton of Bern as well as the Governor's Office of Thun. Her practice focuses on commercial litigation and arbitration as well as contract law.

Raphael Meier

Raphael F. Meier is Counsel at Thouvenin Rechtsanwälte. His practice focuses on commercial dispute resolution and contract law. In dispute resolution, he specialises in commercial litigation and arbitration (Swiss Rules, ICC, WIPO). As a mediator SCCM / UMCH he also supports parties in mediation proceedings, either as party representative or mediator. Raphael Meier's dispute resolution practice covers a broad range of commercial disputes, including general contract law, international trade and commercial law, insurance law, construction law, distribution and licensing law, unfair competition and intellectual property law and M&A transactions. His advisory work focuses on distribution law and intellectual property law, in particular in connection with ICT contracts. Raphael Meier is a member of the board of the European Lawyers' Association.

Citlali Muster

Citlali Muster is an Attorney-at-Law at Thouvenin Attorneys at Law. Her practice focuses primarily on inheritance law, estate planning and administration, matrimonial property and divorce law, adult protection law, and contract law. A particular emphasis of her work lies in the planning and implementation of business successions. She further enhanced her expertise while working at a specialized law firm in Bern and in estate advisory services at renowned Swiss banks.

Arlette Pfister

Arlette Pfister is a Partner at Thouvenin Attorneys at Law. Her preferred areas of practice include corporate law, commercial law, employment law, and contract law. She has a particular focus on advising international corporations on restructurings, as well as counseling companies and corporate groups on complex and general corporate law matters, including the planning and implementation of business successions. She also provides clients with comprehensive support in day-to-day corporate housekeeping. In addition, Arlette Pfister advises companies and private individuals on the negotiation and structuring of commercial agreements, business succession planning, and on matters relating to residence and work permits. She also has experience in the fields of alternative dispute resolution, life sciences and healthcare law, as well as data protection.

Kristina Probst

Kristina Probst has been an Associate with Thouvenin Rechtsanwälte since 2025. Prior to joining Thouvenin Rechtsanwälte, she worked with Swiss business law firms and gained experience at the District Court of Dielsdorf. Her practice focuses on contract law, mergers & acquisitions, as well as general corporate and commercial matters.

Michelle Ris-Enz

Michelle Ris-Enz joined Thouvenin as an Associate in 2025. Before joining as an attorney, she worked for several years as a Junior Associate and legal employee at the firm. She also gained professional experience as a court clerk at the District Court of Meilen and as a legal employee in the legal department for financial products at a Swiss bank. Her practice focuses on contract law, mergers & acquisitions, commercial and corporate law, as well as insurance law.

Patrick Rohn

Patrick Rohn has been a partner with Thouvenin Rechtsanwälte since 2013. He specializes in domestic and international commercial litigation and arbitration, with a particular focus on disputes relating to distribution, licensing, commercial and corporate transactions and relations. Patrick has advised and acted as counsel in international arbitrations under the ICC, UNCITRAL, WIPO and Swiss Rules for companies from various sectors, including the pharmaceutical, medical devices, technology, engineering, and trade sectors. Moreover, Patrick frequently represents parties in complex contractual, corporate (incl. post-M&A, joint venture, directors' liability, shareholder agreements) and insolvency related disputes up to the Appeal Court and the Federal Supreme Court, and he has considerable expertise related to cross-border asset tracing and recovery, and the enforcement of foreign judgments and arbitral awards. In his preferred areas of practice, Patrick also regularly advises clients on non-contentious matters, and he frequently drafts and negotiates distribution, agency and license agreements.

Sandra Spirig

Sandra Spirig has been a Partner with Thouvenin Rechtsanwälte since 2019. She specializes in Swiss and international inheritance law, offering advice to Swiss and foreign private clients on estate planning (wills, pre- and post-nuptial agreements, inheritance agreements and foundations) and on the handling of estates. She further represents clients in inheritance litigation before national authorities and courts. Her other areas of expertise include matrimonial property and divorce law, child and adoption law, adult protection law (advance care directives and living wills) as well as association and foundation law. Sandra Spirig is a certified specialist SBA in inheritance law and a lecturer at the University of Zurich in matrimonial property and inheritance law.

Daniel Stoll

Daniel Stoll has been a partner at Thouvenin since 1994. His professional focus was originally on dispute resolution and litigation, primarily in the areas of contract, tort, banking and inheritance law, followed by a phase with numerous corporate law and M&A transactions. Today, Daniel mainly advises companies and families as their Outside General Counsel with a focus on governance and succession planning as well as on dispute resolution and procedural-strategic issues. Daniel Stoll is a board member of several family-owned companies in the food, real estate, retail and asset management sectors. Market observers (Legal 500, Chambers, etc.) have recommended Daniel Stoll for “Litigation” for many years. Daniel Stoll has published on issues of inheritance, banking and procedural law as well as on protection of victims of financial crime.

Hansjörg Stutzer

Hansjörg founded Thouvenin Rechtsanwälte together with André Thouvenin in 1983. He acted as chairman, sole arbitrator (party appointed and appointed by arbitration institutions), party-appointed arbitrator, counsel and co-counsel in over 160 international and national arbitrations under the rules of ICC, LCIA, UNCITRAL, CAS, Swiss Chambers’ Arbitration Institution, Vienna International Arbitral Centre, Zurich Chamber of Commerce, Slovak Arbitration Court and ad hoc.

David Trachsel

David Trachsel has been a Counsel at Thouvenin since 2026. His practice focuses on international and national litigation and arbitration. He advises and represents companies and private individuals at all stages of the dispute resolution process, with a focus on complex contractual, corporate and enforcement disputes. His experience covers post-M&A, joint venture and shareholder disputes as well as disputes in the insurance, sports and real estate industry. In addition, he regularly represents clients in proceedings for interim measures, enforcement of foreign judgments and arbitral awards and cross-border asset tracing. David Trachsel has a particular focus on bankruptcy and insolvency related litigation, on which he has written a doctoral thesis.

Sebastian C. Wyler

Sebastian C. Wyler is an Attorney-at-Law at Thouvenin Attorneys at Law. Prior to joining the firm, he worked for several years as an attorney at two renowned commercial law firms in Zurich. His practice focuses particularly on employment law, where he provides both advisory and forensic services, as well as on disputes before state courts and arbitration tribunals and advising on contractual and commercial law disputes.  Recent experience includes the following: \tRepresentation of a Swiss wealth- and asset manager in the dismissal and exit of a co-founder and leading employee \tRepresentation of a relationship manager in employment-related disputes against his former employer, a large Swiss financial institution \tRepresentation of an internationally operating producer of contact lenses in the dismissal and exit of a Swiss-based key employee (by way of settlement) \tRepresentation of the acquirer in a complex post-M&A dispute against the former sellers

Sophia Zgraggen

Sophia Zgraggen is an Attorney-at-Law at Thouvenin Attorneys at Law. Prior to joining the firm, she worked at a renowned Swiss business law firm, gained experience at the District Court of Zurich, and served as Legal Counsel. Her main areas of practice include corporate law, commercial law, mergers & acquisitions, and contract law. She has a particular focus on advising companies on restructurings and complex corporate law matters, including the planning and implementation of business successions. In addition, Sophia Zgraggen assists companies and private clients in drafting and negotiating commercial contracts, as well as in matters relating to employment law and residence and work permits.