Dispute resolution in Luxembourg

Arendt & Medernach

Benefiting from a sizeable core litigation offering and also able to draw upon the substantive law strength of lawyers from across other practice areas, including banking and finance, the ‘knowledgeable and efficient’ team at Arendt & Medernach has ‘broad experience that covers all areas of domestic and international litigation’. Led by the ‘well-connected, pragmatic and experiencedFrançois Kremer, the team is ‘able to manage very complex cases’, including high-stakes shareholder disputes, funds-related litigation and white-collar matters. The ‘diligent, hardworking and responsiveClara Mara-Marhuenda is an integral part of the team and is recognised for her corporate and finance disputes expertise, including in contentious insolvency matters and asset tracing. Leveraging his overarching real estate expertise, Christian Point is regularly involved in commercial property/construction disputes.

Practice head(s):

François Kremer



‘The team demonstrates an incredible responsiveness and exceptional ability to understand issues and deliver a legal response of exceptional quality.’

‘The team is one of the best on the market.’

‘All the team members are professional, attentive and helpful.’

‘We have worked with the team on different cross-border cases and they are knowledgeable and experienced. The team is goal-oriented and is ready to put time on working our global litigation strategies.’

‘The team has an excellent profile and reputation internationally. They are regarded as market leaders in investment fund and related disputes. The partners are very knowledgeable and experienced in the local market, which demands on-the-ground knowledge. They are a pleasure to work with.’

‘The highly professional team is very educated and able to manage very complex cases.’

‘The biggest impression was made partner by François Kremer with whom I have been working mostly. I like his matter-of-fact approach. I believe his strength is in strategic thinking. He is very effective in identifying and focusing on important stuff.’

‘Francois Kremer is very knowledgeable, well connected, pragmatic and experienced.’

‘Clara Mara-Marhuenda is exceptional.’

Clara Mara-Marhuenda is very diligent, hardworking and responsive.’

‘Philippe Dupont is very approachable and an outstandingly intelligent and versatile partner. Fully recommend.’

‘François Kremer: highly experienced and seasoned with Luxembourg court practices.’

‘Francois Kremer has extensive experience in disputes before the Luxembourg courts, good local network.’

Work highlights

  • Assisted a UK-based investment firm in the context of two consecutive bond issuances carried out by an Italian company; Luxembourg was a key jurisdiction in this cross-border transaction as the issuances were secured through the set-up of a Double Luxco structure.
  • Represented a Russian bank in a dispute regarding the exequatur of a Russian judgment against a foreign citizen.
  • Assisting a trustee of an American company in Chapter 11 proceedings, in a major international financial fraud case.

Clifford Chance

While it is smaller than many of the other top-ranked firms, Clifford Chance‘s litigation offering is ‘well supervised’ by Albert Moro, and his hands-on involvement in the highest-profile cases it handles ensures that it has a strong and loyal following from corporates, funds and banks when they require litigation advice. Moro is praised for his ‘knowledge of the law and outstanding capacity to think outside the box’, and while he is best-known for corporate litigation, his vast market experience ensures that there is ‘no specific litigation issue he would not have encountered in the past and disposed of’.

Practice head(s):

Albert Moro


‘The team is well-organised and supervised by the partner in charge.’

‘Albert Moro in a rather unique way combines strategic thinking and analytical skills covering, due to his vast experience, all relevant areas of law. There is no specific litigation issue he would not have encountered in the past and disposed of.’

‘The main strength of Clifford Chance in Luxembourg is Albert Moro. His understanding of modern company needs, as well as his knowledge of the law and capacity to think outside the box is outstanding.’

Elvinger Hoss Prussen

Elvinger Hoss Prussen is adept at handling corporate, commercial, civil and administrative litigation for corporates, financial institutions and individuals. As well as its excellent procedural understanding of the Luxembourgish civil litigation landscape, the team, which is headed by the ‘friendly and sincere’ Pierre Elvinger and Marc Elvinger, is also seamlessly able to draw upon the subject matter knowledge of lawyers from across the firm’s market-leading full-service business law offering. Elisabeth Omes is also recommended, particularly in the context of financial services-related disputes.

Practice head(s):

Marc Elvinger; Pierre Elvinger



‘Pierre Elvinger is very friendly and sincere.’

Key clients


Work highlights

  • Represented Kierchefong in an action initiated by it requesting the annulment of certain lease agreements, which have been entered into between the Association and the former church factory of Hollerich, as well as between the Association and former lessors of the Church Factory of Hollerich in order to recover the payment of the rents.


Litigation underpins much of KLEYR GRASSO’s work in Luxembourg, whether through formal proceedings or in a pre-litigation and risk management context. The size of the team, which includes four partners, ensures that it has the strength-in-depth to advise across a wide range of disputes, and to provide clients with a degree of individual partner specialisation. The ‘very strategic’ Marc Kleyr continues to handle a significant amount of high-profile litigation matters, alongside his duties as managing partner of the firm, and is appreciated for his ‘compassion’ and ‘outstanding perseverance’, including in complex shareholder disputes. ‘Fully aware of the procedural rules and recent Luxembourg case law’, in part due to her role as a member of the Luxembourg Bar Commission on civil procedure, Donata Grasso handles a range of complex domestic and cross-border disputes and is noted, in particular, for her ability ‘to analyse legal problems and to find practical solutions’ in relation to business disputes. Other recommended practitioners include Rosario Grasso, who combines ‘good judgement paired with professional aspiration’, for clients engaged in white-collar disputes; ‘top drawer litigatorPascal Sassel, ‘who really knows his stuff’ as it relates to financial services disputes; and François Collot, whose principal focus is on real estate and construction cases.


‘The litigation team includes many talents who have an innovative approach to legal issues and who know how to offer its clients tailor-made solutions.’

‘Kleyr Grasso is an outstanding firm in Luxembourg. We have been using the firm for the last five years across a range of complex matters involving litigation and pre-litigation work. The firm delivered consistently great results for good value for money.’

‘Donata Grasso displays great attention to all the details of a case and has many years experience handling cross-border litigation. She is also able to analyse legal problems and to find practical solutions.’

Donata Grasso is fully aware of the procedural rules and recent Luxembourg case law.’

Rosario Grasso displays good judgement paired with professional aspiration.

‘Marc Kleyr thinks very strategically and understands the way the other party is thinking.’

Pascal Sassel is a top-drawer litigator who really knows his stuff.’

Key clients



SEO (Société Électrique de l’Our)

HITEC Luxembourg S.A.





Quantica Capital AG

BLRT Refonda Baltic



Leveraging the firm’s institutional financial services and asset management ties, as well as regularly acting on a standalone basis, the ‘strong’ team at Linklaters has a ‘significant depth of experience’ handling high-stakes regulatory, white-collar and commercial litigation. Team head Guy Loesch has a ‘well-deserved reputation’, particularly in the financial services and asset management sectors and is effectively able to marshall resources from across the firm’s Luxembourg office, as well as often forming a key part of cross-office teams alongside lawyers from other offices on multi-jurisdictional mandates. Managing associate Katrien Baetens is also recommended, including in relation to complex commercial contract disputes. Leveraging the firm’s overarching international arbitration expertise, the Luxembourg team is also regularly instructed by clients in relation to the enforcement of arbitration awards in the Grand Duchy.

Practice head(s):

Guy Loesch


‘It is a strong team which has a significant depth of experience.’

‘Guy Loesch has a well deserved excellent reputation.’

Key clients

Caixa Geral de Depositos

S.A.Propertize B.V.


Work highlights

  • Representing the Portugese state-owned bank, Caixa Geral de Depósitos, in a criminal matter and subsequent civil proceedings  issued as a result of the embezzlement of several million euros by an ex-employee.
  • Representing Italian power company Enel in its challenge of an ex-parte exequatur order to prevent a ruling of an Albanian Court obtained by the Albanian company Albania Beg Ambient becoming enforceable in Luxembourg.
  • Representing Propertize in a claim brought against an individual in the context of their alleged fraudulent activity relating to the financing of a large real estate construction project in the south of the country.

Loyens & Loeff

Displaying an ‘excellent legal knowledge of Luxembourg financial law and how it fits into the global financial picture’, Loyens & Loeff excels at handling high-stakes business law disputes, including in the context of resource intensive multi-jurisdictional mandates. The ‘very authoritative and experienced’ Veronique Hoffeld is pivotal to much of the success of the team and impresses clients through, among other things, her ability ‘to synthesise a complex case and come up with novel strategies to achieve unconventional objectives’. The ‘conscientious’ Henri Dupong often works in harness with Hoffeld on the most complex mandates and prompted one satisfied client to state: ‘if a client ever finds themselves in a bet-the-company litigation scenario, Henri is the lawyer you want on your team’. 

Practice head(s):

Veronique Hoffeld



‘Very professional, serious lawyers, with excellent legal knowledge of Luxembourg financial law and how it fits into the global financial picture.’

‘Veronique Hoffeld is very authoritative and experienced.’

Veronique Hoffeld is able to synthesise a complex case and come up with novel strategies to achieve unconventional objectives.’

Veronique Hoffeld and Henri Dupong are both at the pinnacle of their profession – creative, pragmatic, and professional. Both had different yet very complementary styles and skillsets that are synergistic and beneficial to the client (not because, but despite the fact that Veronique and Henri are colleagues at the same firm). The sum is often greater than its parts, but with Veronique & Henri, there was more a “je ne sais quoi” element.’

‘Olivier Marquais has great legal knowledge and attention to detail.’

Henri Dupong is conscientious, and his attention to detail is second to none. If a client ever finds themselves in a bet-the-company litigation scenario, Henri is the lawyer you want on your team.’

Key clients

Former Directors of the LUXALPHA and LIF fund (“Madoff” Case)


MOLITOR Avocats à la Cour SARL

The ’cost-effective and reliable’ team at MOLITOR Avocats à la Cour SARL  has a strong and well-deserved reputation for handling myriad commercial disputes, including a considerable number involving financial services entities.  The ‘very smart and likeableMichel Molitor is ‘omnipresent’ across the highest-profile cases handled by the team and co-heads the practice alongisde Paulo Lopes Da Silva, who as part of his wide-ranging practice has a particular niche representing clients engaged in directors' liability claims. The ‘responsive and efficientArmel Waisse is also recommended, particularly for her work in the context of contentious insolvency proceedings and shareholder disputes.


‘The team is cost-effective and reliable.’

‘Very responsive, diverse team that offers all business services.’

‘It is all about Michel Molitor! Very smart, likeable, and omnipresent.’

‘Armel Waisse is very responsive and efficient.’

‘Jacques Wolter has taken on our case with great professionalism.’

Allen & Overy Luxembourg

The ‘exceptionally knowledgeable’ team at Allen & Overy Luxembourg excels at handling complex financial services-related disputes, many of which require an interdisciplinary approach involving experts, inter alia, on capital markets regulation and securities law. The team’s ‘knowledge of many jurisdictions and fluency in several languages’ ensure that it is also well-suited to advising on the cross-border issues which frequently occur, and in this regard its ability to draw from experts from across the network is also a strength. Counsel Thomas Berger has a ‘profound knowledge both in contracts and litigation’ and provides ‘spot-on, concise advice which considers practical implications’.

Practice head(s):

Thomas Berger



‘Knowledge of many jurisdictions, fluency in several languages, broad spectrum of skills available.’

‘Exceptionally knowledgeable team, delivering on time, keeping up with the deadlines and high quality submissions and court performances.’

They are very flexible in finding the most appropriate legal support packages to meet their clients’ needs over time, while providing excellent availability and quality of work.’

‘The expertise and experience, together with the stability of their team members are really of essence. Not only the teams provide for legal advice but also help the client to build a sound global strategy and approach of a matter with a short and long term view.’

‘They are team players and provide the extra mile by making sure the memo will be well digested by the client be it a legal interlocutor or a novice in the law field.’

‘Thomas Berger provides spot-on, concise advice which considers practical implications. Excellent availability and engagement.’

‘Thomas Berger is our core point of contact. Knowledgeable both in contracts and in litigation, the knowledge is profound. He is also able and keen to explain to people with different levels of understanding.’

‘I have a very good ongoing relationship with Thomas Berger. He gives excellent legal advice in a quick timeframe. He is an expert in his field that can be highly trusted.’

Bonn & Schmitt

Organised within a ‘multi-faceted structure that perfectly combines competence and personal client care’, Bonn & Schmitt‘s ‘very capable and attentive‘ litigation team has deep and broad experience across formal litigation and in cases utilising ADR techniques in proceedings before the civil, criminal and administrative courts. Many of the partners at the firm handle some litigation, including the ‘very approachableAlex Schmitt, whose transactional banking and finance knowledge is regularly deployed to good effect in relation to disputes in the sector. Alain Grosjean is also a key partner in the team and is particularly well-versed at representing clients in cross-border corporate/shareholder disputes as well as employment litigation.

Other key lawyers:

Simon Malterre; Elena Arno


Bonn & Schmitt’s litigation team clearly stands out with its multi-faceted structure that perfectly combines competence and personal client care.’

The team is very capable and attentive.’

Alex Schmitt is very approachable.’

Key clients


Brucher Thieltgen & Partners

Drawing upon ‘excellent technical skills’ and its ‘extensive knowledge of the Luxembourg court system’, Brucher Thieltgen & Partners excels in deploying ‘creative strategies’ for clients engaged in complex business disputes, including shareholder litigation. Managing partner Nicolas Thieltgen is an ‘impressive litigator, who is able to advise on both legal and strategic aspects’ and is a key member of the team that is headed by Marie Bena.

Practice head(s):

Marie Bena



‘Trusted advisors used over a number of cases. Particular strength is a mix of pugnacity and balanced views.’

‘The team is responsive and highly competent.’

‘The team provides out-of-the box and creative thinking in deploying strategies and options in litigation.’

‘The team is knowledgeable, responsive and efficient.’

‘In addition to its excellent technical skills, this practice has an extensive knowledge the Luxembourg court practice.’

‘Nicolas Thieltgen is an impressive litigator, who is able to advise on both legal and strategic aspects.’


Benefiting from vast experience in the courts across a range of complex business disputes, BSP is able to provide a ‘practically sound approach to cases’ and is also noted for its ability ‘to translate Luxembourg procedural issues and court proceedings for foreign parties’. Highly experienced, practical and reliable’ team head Fabio Trevisan ‘has an encyclopedic knowledge of the law’, ensuring that he is a popular choice on many high-profile cases, including as it relates to white-collar criminal matters. Laure-Hélène Gaicio-Fievez is an ‘outstanding expert of procedure and arbitration’, particularly in the context of cross-border matters, including enforcing and obtaining freezing injunctions in international arbitration.

Practice head(s):

Fabio Trevisan



‘Bonn Steichen & Partners is a highly experienced business litigation law firm. It brings a very practically sound approach to its cases.’

‘The team is very experienced and client minded. In particular, they are able to translate Luxembourg procedural issues and court proceedings for foreign parties. They are also experienced in cross-border litigation and arbitration related court proceedings. In addition, they are experts in criminal law, in particular in relation to money laundering.’

‘The dispute resolution team is very practical. Their experience in courts often makes it very clear what to expect in the litigation environment in Luxembourg, as well as the most practical ways to obtain good results.’

‘An excellent team used to dealing with international cross-border cases. Great at handling detail and managing deadlines, with a practical and calm approach to even the most testing litigation.’

‘This firm is a pleasure to work with: a) depth and capability for contentious work; b) excellent communication skills and turn around of work under pressure; c) thinking “outside the box” and coming up with innovative, speedy solutions for complex legal and procedural hurdles; d) value for money.’

‘The very hands on Fabio Trevisan is an amazing litigator.’

‘Fabio Trevisan and Laure-Helene Gaico-Fievez are exceptional. Fabio has an encyclopaedic knowledge of the law and knows the legal fraternity extremely well. Laure-Helene does not miss any aspect of the detail, works tremendously hard and her communication skills are superb. Both these lawyers are outstanding and you want them on your side in contentious matters.’

‘I work closely with Fabio Trevisan and Laure-Helène Gaicio. Both are outstanding experts of procedure and arbitration, as well as criminal law. Very reliable and thorough’

‘Fabio Trevisan has a very practical view of how to resolve situations, with a lot of experience.’

‘Fabio Trevisan is a highly experienced, practical and reliable practitioner who can be relied upon in a storm.’

Key clients

Greensill Liquidation

Norax Green Capital

PCB Litigation



Ansdell Asset Tracing

Bank Markazi




Kasakstahn – olygarque

Unalome Legal Sàrl

Unalome Legal Sàrl was launched in the market in 2022 and has notable experience handling corporate and employment disputes. Cindy Arces and Marielle Stevenot are the key names.

Practice head(s):

Cindy Arces; Marielle Stevenot

DSM Avocats à la Cour

The ‘business savvy’ team at DSM Avocats à la Cour is adept at utilising conventional litigation and ADR techniques to good effect on behalf of private sector clients, particularly in the context of tax and real estate disputes. The practice, headed by Mario Di Stefano and featuring Alban Colson, is also ‘good at helping with strategic planning in cross-border litigation’. 

Practice head(s):

Mario Di Stefano

Other key lawyers:

Alban Colson


‘They are business savvy and also understand what it is like to work with other law firms (acting as lead counsel).’

‘They understand the commercial issues/realities and can advise me on what really matters.’

‘They are good at helping with strategic planning in cross-border litigation.’

Key clients




Wagner Group

Rizzani de Eccher


PM International


Work highlights

  • Assisting a major bank in Luxembourg, which granted a loan to a foreign company, with the reimbursement of the loan.
  • Successfully represented a public institution in a fee dispute suit involving a provider of architectural services.
  • Advising a construction group in a case regarding recuperation of VAT. The plaintiff is a German company.


Under the guidance of founding partner Guy Perrot, who ‘has a very deep knowledge of Luxembourg civil procedure and related case law’, newly formed litigation boutique Harveyis a natural choice for complex commercial litigation and is particularly strong and highly experienced in shareholders’ disputes and directors’ liability issues.’

Practice head(s):

Guy Perrot


Highly knowledgeable, responsive and to the point.’

‘The firm provides a pragmatic approach to commercial proceedings.’

It is a natural choice for complex commercial litigation and is particularly strong and highly experienced in shareholders’ disputes and directors’ liability issues.’

Guy Perrot stands out due to his deep knowledge, his capacity of thinking rapidly and finding solutions instead of creating or escalating issues.’

Guy Perrot has a very deep knowledge of Luxembourg civil procedure law and related case law. He is very at ease to navigate in the intricacies of the procedural aspects of a case to determine a successful strategy.’

Guy Perrot is truly exceptional in planning defence strategies and knows his practice inside-out.’

Key clients


7 financial intermediaries and 188 investors in Luxembourg funds affected by Madoff’s fraud


EverYi Capital (Asia) Limited



BDO Tax & Accounting S.A.





TREA Asset Management, S.G.I.I.C., S.A.




VIESSMANN Luxembourg

Luther S.A.

Combining ‘deep technical knowledge with a practical solutions-oriented approach’, Luther S.A. provides a ‘high-calibre service’ to clients engaged in business disputes, including as it relates to shareholder litigation and debt recovery. In this context, the team is ‘attentive to the needs of the client’, and consequently is particularly appreciated for its ability to provide ‘tailor-made solutions’, be it in or out of court. Team head Mathieu Laurent is appreciated for his ‘business litigation skills both to analyse legal problems and to find practical solutions’. 

Practice head(s):

Mathieu Laurent



‘The litigation team combines deep technical knowledge with a practical solution-oriented approach. They are flexible with respect to billing while consistently providing high-calibre service.’

‘The team is composed of competent and dedicated people who have a huge experience in Luxembourg. I have been always happy with their technical and pragmatic approach.’

‘The practice is cost-efficient, sharp on the details and mindful of the timelines. The ability to be proactive in analysing the case details and coming up with practical solutions is noteworthy.’

‘The litigation team includes many talents who have an innovative approach to legal issues and is attentive to the expectations of its clients and knows how to offer them tailor-made solutions. The team works closely with its clients, listens to their needs and defines with them the appropriate litigation strategy.’

‘I am specially impressed by the work of Mathieu Laurent who has real business litigation skills both to analyse legal problems and to find practical solutions. Mathieu is one of the best litigation lawyers in Luxembourg and he is fully aware of the procedural rules and recent Luxembourg case law.’

Mathieu Laurent, ably supported by Robert Goerend, never fail to give us concise and customised advice, exactly tailored to each circumstance.’

Raphael Schindler who leads our case is exceptionally organised, efficient, always maintains a good connection with the client and provides timely feedback.’


The ‘responsive, hardworking and user-friendly’ team at NautaDutilh provides a ‘pragmatic and solutions-oriented approach’ across a range of commercial litigation and contentious insolvency. Antoine Laniez is an ‘excellent technical lawyer and provides a terrific client service’, including as it relates to international litigation/arbitration involving sovereign states. Vincent Wellens specialises in IP and IT disputes and co-heads the overarching litgation team alongside Laniez.

Practice head(s):

Antoine Laniez; Vincent Wellens


Other key lawyers:

Florence Remouchamps


‘The team is responsive and provides clear, crisp and commercial advice.’

‘Very professional team, dedicated and solutions oriented.’

‘Pragmatic, solutions-oriented and proactive approach.’

‘Great team – very responsive, hardworking, user-friendly and sharp.’

‘Antoine Laniez is all-round, an excellent technical lawyer and provides a terrific client service.’

Key clients


A leading engineering & construction company



Zurich Insurance




Luxembourg State (ministry of public works and mobility)



Volkswagen / Skoda


Work highlights

  • Assisting two foreign investors in the enforcement of a $500m arbitral award rendered against Kazakhstan and in securing attachments in Luxembourg, Belgium, the Netherlands and other jurisdictions in relation thereto.
  • Assisting Zurich Insurance in a dispute regarding the Luxembourg Chamber of Commerce construction involving a dozen parties, that is pending before the Luxembourg courts.
  • Representing Bahlsen in three appeal procedures before the Luxembourg administrative courts against three decisions of the Luxembourg Competition Council.