Hansen Muller Marchand is a Luxembourg litigation law firm.

The firm was founded in 2015 by Joseph Hansen, Charles Muller and Hervé Hansen. Céline Marchand joined the partnership on 1 January 2018. Joseph brings the experience of 45 years at the Bar in independent practice to a dynamic and internationally oriented team. We advise in English, French, German and Luxembourgish

We represent and advise clients inter
alia in the following areas

Commercial Law

Civil Law

Competition Law

Employment Law

Administrative Law

Real estate

Criminal Law

Inheritance Matters

Our team

JOSEPH HANSEN

Partner – avocat à la Cour

Céline Marchand

Partner – avocat à la Cour

Charles Muller

Partner – avocat à la Cour

Hervé Hansen

Partner – avocat à la Cour

Yanis Hamama

Associate - avocat à la Cour

Anne Bodé

Associate - avocat

Océane Decoux

Assistant

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JOSEPH HANSEN

Partner – avocat à la Cour

Joseph Hansen holds a degree in philosophy (licence en philosophie) from the St Albert Faculty in Louvain and a law degree (licence en droit) from the University of Louvain.

He joined the Luxembourg Bar in 1973 and has been in independent practise since 1976, when he founded his own firm “Etude Joseph Hansen”.

From 1980 to 1999, he was a deputy member (conseiller suppléant) of the Luxembourg Court of Auditors (Chambre des Comptes du Grand-Duché de Luxembourg).

From 1995 to 1999, he chaired the Luxembourg Bar Association’s disciplinary board (Conseil disciplinaire et administratif des avocats du Grand–Duché de Luxembourg).

In 2015, he co-founded Hansen & Muller with Charles Muller and Hervé Hansen.

Joseph has accumulated extensive experience in both advocacy and advisory work. His recent practise has tended to focus on real estate and inheritance matters.

Céline Marchand

Partner – avocat à la Cour

Céline Marchand holds a master’s degree in law from the Université catholique de Louvain, as well as an LL.M. in European Law from King’s College London.

She became a member of the Luxembourg Bar in 2010 and worked in a leading Luxembourg law firm from 2009 to 2015 where she was practicing civil, commercial and administrative litigation. She left in 2015 in order to work as case-handler at the Conseil de la concurrence, the Luxembourg Competition authority. She acquired a breadth of experience in competition law in both compliance and litigation matters. She was also involved in the advisory legislative work of the authority.

In January 2018, Celine joined the firm as partner.

Céline’s main interest lies in public and administrative law in general, and competition, public procurement and urban planning law in particular. Her practice is also in civil and commercial litigation.

Céline is a member of the Luxembourg Bar Council (Conseil de l’Ordre). She is also a member of the board of directors and secretary of the Luxembourg association for the study of competition law (ALEDC – association luxembourgeoise pour l’étude du droit de la concurrence), and of the Luxembourg association for environmental law (ALDE – association pour le droit de l’environnement).

Charles Muller

Partner – avocat à la Cour

Charles Muller holds a Master’s degree in Business Law from the Université Panthéon-Sorbonne (Paris I), a joint Master’s 2 degree in Global Business Law from the Institut d’Etudes Politiques de Paris (Sciences Po) and the Université Panthéon-Sorbonne, as well as an LL.M. from Columbia Law School, toward which he received a Fulbright scholarship.

He became a member of the Luxembourg Bar in 2011. From 2011 to 2014, he was an associate at a leading Luxembourg law firm. In 2015, he co-founded Hansen & Muller with Joseph Hansen and Hervé Hansen.

Charles is accredited as a mediator in civil and commercial matters by the ministre de la Justice and is listed on the Centre of Civil and Commercial Mediation‘s list of accredited mediators.

He focuses mainly on civil and commercial litigation and real estate matters.

Hervé Hansen

Partner – avocat à la Cour

Hervé Hansen holds a B.A. in Philosophy, Politics and Economics from the University of Oxford, a B.A. in Law from the University of Cambridge and a “Maîtrise en Droit” from the Université Panthéon Assas (Paris II).

He became a member of the Luxembourg Bar in 2012. From 2012 to 2014, he was an associate at a leading Luxembourg law firm. In 2015, he co-founded Hansen & Muller with Joseph Hansen and Charles Muller.

He was a member of the Luxembourg Bar Council (Conseil de l’Ordre) from 2017 until 2022.

He teaches the international private law course which is part of the Cours complémentaires de droit luxembourgeois (professional training course for aspiring Luxembourg lawyers).

Hervé’s practice is mainly in civil and commercial litigation, as well as white-collar crime.

Yanis Hamama

Associate - avocat à la Cour

Yanis Hamama holds a Bachelor’s degree and a Master’s degree in Economic Law (Innovation Law track) from Institut d’études politiques de Paris (Sciences Po). As part of his studies, he spent one year at Yale-NUS College in 2017 and one semester at McGill University in 2020

He became a member of the Luxembourg Bar in 2021. Prior to joining Hansen Muller Marchand, Yanis was an associate at a leading Luxembourg law firm.

Anne Bodé

Associate - avocat

Anne Bodé holds a Bachelor’s degree, a Master’s degree in private law and a Master’s 2 degree in comparative law from the faculté de droit de l’Université de Strasbourg.

She was admitted to the Luxembourg Bar in June 2024.

Océane Decoux

Assistant

Océane joined Hansen Muller Marchand in October 2021 as legal assistant. She is fluent in French and English.