
Drawing upon a ‘profound knowledge of Luxembourg law and the Luxembourg courts’, as well as vast expertise across EU legislation, Arendt & Medernach is well placed to represent domestic and international companies across a wide range of disputes. ’Seasoned’ team head Clara Mara-Marhuenda is skilled at developing ‘effective strategies’ for fund and financial services clients, among others, including in the context of complex shareholder disputes, enforcement of foreign arbitral awards and with regard to contentious insolvency. Under the guidance of Jean-Luc Putz, the firm is also very active defending financial services clients in regulatory and white-collar matters, including as it relates to money laundering and fraud offences. Other key practitioners include Christian Point, for administrative law disputes; Philippe-Emmanuel Partsch, for EU and competition law; François Kremer for ADR and mediation; Sandrine Margetidis-Sigwalt, for work in the insurance and public sectors; and counsel Danil Nikolaev.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- 'They are highly responsive and have an immediate and precise understanding of the cases and their issues.'
- 'They have a profound knowledge of international arbitration and Luxembourg procedural law, as well as Luxembourg's courts practice.'
- 'Arendt has an excellent dispute resolution team that stands out for its profound knowledge of Luxembourg law and the Luxembourg courts.'
- 'Seasoned partner Clara Mara-Marhuenda quickly analyses and understands the problems we face and goals we want to achieve and she is able to develop and implement appropriate and effective strategies.'
- 'They deliver in-depth work, combining a global vision with attention to detail.'
Key clients
- Bredin Prat
- Borel & Barbey
- Bělina
- Three Crowns
Work highlights
Provide representation of an international custodian bank in the Madoff case.
Representing a global leader in agricultural production and export before the Luxembourg courts. The holding company, established in Luxembourg and listed on a stock exchange in another EU member state, boasts several thousand shareholders.
Representing the interests of a company specialising in copyright royalties before the Luxembourg courts in the context of a dispute wherein the Company, as a limited partner holding over 99% (both directly and indirectly) in two regulated Luxembourg funds, is opposed to the funds’ respective managing general partner.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Jean-Luc Putz
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Danil Nikolaev
Practice head
Clara Mara-Marhuenda
Other key lawyers
Christian Point; Philippe-Emmanuel Partsch; Philippe Dupont; Thierry Lesage; Sandrine Margetidis-Sigwalt; Jean-Luc Putz; Danil Nikolaev; François Kremer


