"Luc Defferrard has excellent synthesis skills and is always available and very attentive to his clients. He is a seasoned negotiator with outstanding business insight." - Chambers and Partners

"Luc Defferrard is a brilliant, pragmatic lawyer giving the most solid high-quality advice." - The Legal 500

Luc Defferrard, partner with Walder Wyss since 2001, has been active in the finance and legal industry for many years. He mainly advises clients in domestic and cross-border mergers & acquisitions, financing, restructuring as well as in real estate and capital market. Luc Defferrard particularly focuses on private equity and venture capital transactions. He is regularly recommended by Chambers, Legal500 and IFLR1000. Chambers Europe describes him as "always available" and "very strong negotiator"

"Luc Defferrard has excellent synthesis skills and is always available and very attentive to his clients. He is a seasoned negotiator with outstanding business insight." - Chambers and Partners

"Luc Defferrard is a brilliant, pragmatic lawyer giving the most solid high-quality advice." - The Legal 500

Prior to joining Walder Wyss, Luc Defferrard was working for seven years with UBS in Geneva, Zurich and New York as client manager and project manager in corporate and structured finance. In this position he developed the bank's structured finance offerings to clients in the French part of Switzerland.

Luc Defferrard speaks French, German and English. He is registered with the Zurich Bar Registry and admitted to practice in all Switzerland.

Walder Wyss advised 3VC on its investment in Aderis

IFLR1000 Rankings 2026: Walder Wyss recognised as a top-tier law firm

Let’s Go Fitness SA – Refinancing

CABB Group – EUR 625 million 8.00% senior secured notes due 2031

UBS Switzerland AG – Refinancing of SpineArt SA

Chambers Global 2026 Rankings

Polenghi Group accelerates its international growth with Crédit Mutuel Equity

Walder Wyss advised Flexstone Partners in Ecorobotix’s Series D

IFLR 1000 Rankings 2025 - Walder Wyss as a top-performing law firm ranked

Acquisition of majority stake of ExcellGene by ARCHIMED

Walder Wyss advised Chrysalis Investments Ltd. in connection with its investment in wefox

UBS Switzerland AG – Financing of the acquisition of Groupe Leuba SA

Strategic Investment by The Brydon Group in MedComms Experts

Acquisition of AELIA Assurances Group by GGW Group GmbH

somnOO strengthens its development alongside Bpifrance

Walder Wyss advised Novo Holdings on the acquisition of Catalent

Vandria’s 2nd Series A Closing

IFLR 1000 Rankings - Walder Wyss as a top-performing law firm ranked

H55 - Series C Financing Closed

Walder Wyss advises Acronis on sale of majority stake to EQT

Liberales Arbeitsrecht

| di Luc Defferrard | in: "Brussels Research Group: Spotlight on Switzerland" | Zeitschriften

New Swiss Insolvency Rules and Lender’s Rights Pre-Insolvency

| di Luc Defferrard e Tervel Stoyanov | in: Global Restructuring Review (GRR) (a cura di), "Swiss Chapter of the Europe, Middle East and Africa Restructuring Review" | Sammelbände

Corporate Client Event

| Relatori Urs P. Gnos, Markus Vischer, Urs Schenker, Dominik Hohler, Fabienne Limacher, Irène Suter-Sieber, Luc Defferrard e Pascale Köster | in: "Sie finden den Link zum Video hier" | Zurich | Präsentationen

Venture capital investment in Switzerland: market and regulatory overview

| di Luc Defferrard [Co-autore], Maurus Winzap [Co-autore] e Florian Gunz Niedermann [Co-autore] | in: Sweet & Maxwell International Series Legal, UK & Ireland (a cura di), "Practical Law Global Guides 2016/17" | London | Sammelbände

Venture capital investment in Switzerland: market and regulatory overview

| di Luc Defferrard [Co-autore], Florian Gunz Niedermann [Co-autore], Maurus Winzap [Co-autore] e Alex Nikitine [Co-autore] | in: "PLC Multi-Jurisdictional Guide 2015: Private equity and venture capital" | Zeitschriften

2014: a very good year

| di Luc Defferrard, Lukas Wyss e Maurus Winzap | in: "IFLR (International Financial Law Review), Switzerland Guide 2015" | Zeitschriften

Schweiz – Implementierung der «Abzocker-Initiative»: Neue Corporate Governance Regeln für Schweizer Aktiengesellschaften

| di Urs P. Gnos [Co-autore], Simon Kehl [Co-autore] e Luc Defferrard [Co-autore] | in: "International Mergers & Acquisitions Review" | Euromoney Trading Ltd | Zeitschriften

Venture capital investment in Switzerland: market and regulatory overview

| di Luc Defferrard [Co-autore], Maurus Winzap [Co-autore], Florian Gunz Niedermann [Co-autore] e Alex Nikitine [Co-autore] | in: "PLC Multi-Jurisdictional Guide 2013/2014: Private equity and venture capital" | Zeitschriften

Schweiz – Gesellschaftliche Aspekte und steuerrechtliche Konsequenzen in Bezug auf die Gründung einer Holding Gesellschaft in der Schweiz

| di Luc Defferrard [Co-autore], Urs P. Gnos [Co-autore], Samuel Dürr [Co-autore] e Alexandre Both [Co-autore] | in: "International Mergers & Acquisitions Review 2013" | London | Sammelbände

Schweiz – Anwendungsbereich des Übernahmerechts

| di Luc Defferrard [Co-autore], Urs P. Gnos [Co-autore] e Lucas Hänni [Co-autore] | in: Euromoney (a cura di), "Euromoney Yearbooks: International Mergers & Acquisitions Review" | 66–69 | Colchester | Sammelbände

Schweiz – Sitzverlegungen in die Schweiz aus gesellschaftsrechtlicher und steuerlicher Sicht

| di Urs P. Gnos [Co-autore], Thomas Meister [Co-autore] e Luc Defferrard [Co-autore] | in: "Euromoney Yearbooks: International Mergers & Acquisitions Review" | 184–188 | Colchester | Sammelbände

Entwicklungen im regulatorischen Umfeld für Vermögensverwalter von alternativen Anlagen

| di Luc Defferrard [Co-autore] e Christian Staub [Co-autore] | in: "Financier Worldwide" | Zeitschriften

Schweiz – Ausschluss von Minderheitsaktionären aus kotierten Gesellschaften

| di Luc Defferrard [Co-autore], Urs P. Gnos [Co-autore] e Thomas Meister [Co-autore] | in: "Euromoney Yearbooks: International Mergers & Acquisitions Review" | Colchester | Sammelbände

Consolidation dans la gestion de fortune

| di Luc Defferrard [Co-autore] e Hubertus Hillerström [Co-autore] | in: "Le Temps" 12/2009 | 18 | Zeitschriften

Erhebliche Revision des Schweizer Übernahmerechts

| di Urs P. Gnos [Co-autore] e Luc Defferrard [Co-autore] | in: "World Securities Law Report" 5/2009 Vol. 15 | Zeitschriften

Schweiz – Entwicklungen im schweizerischen Übernahmerecht

| di Luc Defferrard [Co-autore], Urs P. Gnos [Co-autore] e Andrin Schnydrig [Co-autore] | in: "Euromoney Yearbooks: International Mergers & Acquisitions Review" | Colchester | Sammelbände

Schweizerisches Übernahmerecht – Entwicklungen im Jahr 2007

| di Luc Defferrard [Co-autore] | in: "Euromoney Yearbooks: International Mergers & Acquisitions Review" | Essex | Sammelbände

Schweiz – Erfahrungen mit dem Fusionsgesetz

| di Luc Defferrard [Co-autore] e Urs P. Gnos [Co-autore] | in: "Euromoney Yearbooks: International Mergers & Acquisitions Review 2007/2008" | Sammelbände

Mitarbeiterbeteiligungspläne

| di Luc Defferrard | in: "Le Temps" | Zeitschriften

Neue Entwicklungen in der Finanzierung von Swiss Assets

| di Luc Defferrard [Co-autore] | in: "Asset Finance International" | Zeitschriften

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