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Lukas Wyss

Lukas Wyss

Dr. iur., LL.M., ArbP
Co-Head Arbitration


T +41 58 258 16 00
F +41 58 258 16 99
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German, English, French

Lukas Wyss

Dr. iur., LL.M., ArbP
Co-Head Arbitration

Bratschi Ltd.
Bollwerk 15
P.O. Box
CH-3001 Berne

T +41 58 258 16 00
F +41 58 258 16 99
German, English, French


For more than 25 years, Lukas has advised companies and individuals in the planning an setting up of complex national and international contract and project structures, in particular in technology, construction and engineering projects, as well as in national and international commercial transactions. Furthermore, Lukas is specialized in questions of contractual and extra-contractual liability law and directors’ and officers’ liability law. In these areas he has conducted proceedings in far more than 100 cases before state courts and before Swiss and international tribunals. He has also authored various publications in these fields. Lukas has acted as arbitrator under different arbitration rules such as the UNCITRAL rules, the ICC rules and the Swiss Rules of International Arbitration. Since 1 June 2019, he is also member of the Swiss Chambers' Arbitration Institution (SCAI) Court. He has also been conducting training and coaching in the areas of negotiation, legal risk management and conflict management for many years.

Admitted to the Swiss Bar since 1992.

Professional career

Lukas joined the law firm Bratschi Emch & Partner at the beginning of 1998 and was made partner on April 1, 2004. Before this he worked for an international audit company and in the corporate and claims legal services for a large Swiss insurance company where he specialized in corporate, contract and liability law and he dealt with litigation cases throughout Switzerland and abroad. In 2001/2012 he studied international commercial projects and transactions at the Georgetown University Law School, Washington, D.C. He also wrote his thesis shich was published in 2005 on this topic. Lukas Wyss gives lectures and publishes regularly on the subject of contractual and extra-contractual liability law, directors’ and officers’ liability law (including legal risk management and compliance questions) as well as in the field of procedural law and international arbitration.


  • ICC Masterclass for Arbitrators, Paris (2010)
  • Arbitration Practitioner (ArbP), Swiss Arbitration Academy, Zurich/Geneva (2009)
  • University of Bern, thesis (2005)
  • Master of Law, International Legal Studies, Georgetown University Law Center, Washington, D.C. (2002)

Reference cases

  • Legal advice for a listed globally active company regarding the construction of an EUR 160 million production plant in Turkey
  • Legal advice for an international hotel chain regarding the financing of and the drafting of the contract for the construction of a CHF 150 million hotel and conference center in Zurich
  • Legal advice for an international group of companies regarding the financing and construction of a USD 100 million solar power plant in Spain
  • External legal counsel for various national and international general contractors with regard to general or total contracting and planning issues; lead counsel in numerous state court and international arbitration proceedings, in particular in terms of warranty, damages and fee issues.
  • External legal counsel for a leading international technology concern in successful contract negotiations with the Bill & Melinda Gates Foundation >
  • Legal advice for a globally active engineering group in questions of technology law for more than 15 years (primarily with regard to contract law and intellectual property rights)
  • Legal advice for a globally active company regarding work safety and compliance matters in the area of pipeline construction
  • Extra-judicial and judicial advice in various complex cases of building damages for a number of Swiss general contractors
  • Led the international arbitration proceedings for a Danish company regarding damages for breach of contract in the area of wind power plant construction
  • Led the international arbitration proceedings for a Turkish company regarding faults in the plant and claims for compensation in the area of the production of artificial fertilizer
  • Led the international arbitration proceedings for a listed Swiss company in the area of contracts for patent licenses for medical equipment
  • Led more than 80 liability and directors’ and officers’ liability cases before the Swiss courts for more than 20 years
  • Handling of complex national and international recourse cases, in particular in the areas of work contracts as well as in liability and insurance cases
  • Various national and international arbitration mandates under the ICC rules, the Swiss Rules and in ad hoc arbitration proceedings
  • Expert report on product liability regarding legal questions in connection with an EUR 120 million product recall in the area of rail vehicles

Other activities

  • Co-Organizer of the yearly Conference on International Arbitration of the Europe Institute of the University of Zurich (EIZ)
  • Various board of directors' mandates
  • Member of the Swiss Court of International Arbitration (SCAI)
  • Member of the liability and insurance group of the Bernese Bar Association
  • Various presentations and conferences on arbitration, liability and negotiation topics
  • Lecturer at he ZfU International Business School for contract and business law and legal risk management (1996-2006)


  • recommended for «Product liability defence» by «Who is Who Legal» 2019
  • recommended for «Dispute Resolution - Litigation» by Legal500 2018


  • Swiss Bar Association (SAV)
  • Bern Bar Association (BAV)
  • Zurich Bar Association (ZAV)
  • Swiss-Chinese Chamber of Commerce
  • Europe Institute at the University of Zurich (EIZ)
  • Schweizerische Gesellschaft für Haftpflicht- und Versicherungsrecht (SGHVR)
  • International Bar Association (IBA)
  • Swiss Arbitration Association (ASA)
  • Swiss Chambers' Arbitration Institution (SCAI)

  • Corporate law
  • Legal risk management and compliance questions
  • International and national contract law (incl. technology and intellectual property law)
  • Liability law and directors’ and officers’ liability law
  • Civil procedural law and arbitration



Publication Die Kunst der Verhandlungsführung – Strategie, Taktik, Konfliktlösung

Wyss Lukas, 1. Auflage, Basel 2021

Publication Aktuelle Zuständigkeitsfragen in Zusammenhang mit internationalen kommerziellen Schiedsgerichten mit Sitz in der Schweiz Wyss Lukas, in: Jusletter vom 25. Juni 2012, S. 35

Publication Interim Measures and Hearing of Evidence - a Swiss Perspective on the Role of State Judges in International Arbitration Procedures Wyss Lukas, in: International Arbitration Law Review (Int. A.L.R.) 3/2012, S. 67-74

Publication Trends in Documentary Evidence and Consequences for Pre-arbitration Document Management Wyss Lukas, in: International Arbitration Law Review (Int. Arb.L.R.) 3/2010, S. 111-125

Publication Die negative Feststellungswiderklage - eine legitime Antwort auf die Teilklage Wyss Lukas, in: Haftung und Versicherung (HAVE) 1/2008, S. 77-81

Publication Supreme Court Rejects Claim Based on the Perte d’une Chance Theory Wyss Lukas, in: International Law Office, Newsletter vom 20. September 2007

Publication Das IKS und die Bedeutung des (Legal) Risk Management für VR und Geschäftsleitung im Lichte der Aktienrechtsreform 2007 Wyss Lukas, in: Schweizerische Zeitschrift für Wirtschafts- und Finanzmarktrecht (SZW) 1/2007. S. 407-421

Publication Beweislast und Beweisanforderungen im schweiz. Produktehaftpflichtrecht Wyss Lukas, in: Haftung und Versicherung (HAVE) 2/2007, S. 173 ff.

Publication Product Safety Regime in Switzerland Wyss Lukas, in: International Law Office, Newsletter vom 2. Februar 2006

Publication Risikobewältigung im Unternehmen Wyss Lukas, in: CH-D Wirtschaft 5/2006, S. 10-11

Publication Liability of Board Members and Management in Product Liability Cases in Switzerland Wyss Lukas, in: International Law Office, Newsletter vom 4. Mai 2006

Publication Swiss Product Liability and Product Safety Regimes in Context of Harmonization Wyss Lukas, in: European Product Liability Reporter, 2006, S. 39 f.

Publication Technische Normen im Spannungsfeld zwischen Haftpflicht- und Produktsicherheitsrecht Wyss Lukas, in: Aktuelle Juristische Praxis (AJP) 1/2006, S. 53 ff.

Publication Bundesgericht bestätigt Kapitalisierungszinsfuss von 3.5% für die Berechnung von Personenschäden im Haftpflichtrecht Wyss Lukas, in: Aktuelle Juristische Praxis (AJP) 4/2005, S. 494-496

Publication Juristisches Risk Management und Hedging als Mittel zur Risikokontrolle im Rahmen von internationalen Wirtschaftstransaktionen und -projekten Wyss Lukas, Diss. Bern 2005

Publication Risk Management und Hedging als Aufgaben des Wirtschaftsanwaltes Wyss Lukas, in: recht 3/2005, S. 86-104

Publication Rechtliche Risiken in den Griff bekommen - juristisches Risk Management gewinnt an Bedeutung Wyss Lukas, in: Office Suisse d’Expansion Commerciale (Heute: Switzerland Global Enterprise), Zürich 2002

Publication Gefordertes juristisches Risk Management - Absicherung des Unternehmens gegen externe Faktoren Wyss Lukas, in: Neue Zürcher Zeitung vom 22. Oktober 2002

Publication China's Socio-Economic and Legal System in Transition - an Overview of the Status Quo and Risk Allocation and Mitigation Strategies for Foreign Investors Wyss Lukas, Graduate Paper, Georgetown University Law Center, Washington D.C. 2002

Publication "Verschwundene Fahrzeuge" - ein Phänomen in der Versicherungslandschaft Wyss Lukas, in: Festschrift des Nationalen Versicherungsbüros Schweiz und des Nationalen Garantiefonds Schweiz, Basel 2000, S. 591 ff., S. 607 ff.

Publication Neue Tendenzen in der Berechnung von Invaliditäts- und Versorgerschäden Wyss Lukas, in:  Pierre Tercier (Hrsg.), Kapitalisierung - Neue Wege, Freiburg 1998, S. 105 ff.

Publication Revision Umwelthaftpflichtrecht - Umweltschäden und Ölschäden im besonderen Wyss Lukas, in: Schweiz. Versicherungskurier 5/1997, S. 34 ff.

Publication Kausalitätsfragen unter besonderer Berücksichtigung der hypothetischen Kausalität Wyss Lukas, in: Schweizerische Juristen-Zeitung (SJZ) 93/1997, S. 313 ff.

Publication Kommentierung: "Hebebühne"-Urteil Wyss Lukas, in: Schweiz. Versicherungskurier, 3/1996, S. 26 ff. und 4/1996, S. 34 ff.

Publication Der Fehlerbegriff im schweizerischen Produktehaftpflichtgesetz (PrHG) vom 18. Juni 1993 Wyss Lukas, in: recht 3/1996, S. 108 ff.