KLEYR_GRASSO | Legal500 EMEA, 2024

27 MARCH 2024

Image Legal500 EMEA, 2024

Legal500 EMEA, 2024

Dispute resolution - Tier 1

KLEYR GRASSO combines ‘responsiveness and technical skills’ to good effect for clients engaged in complex commercial and business litigation. Appreciated for her ‘practical and commercial advice,’ Donata Grasso is central to the success the firm has in much of this work, regularly taking the lead in complex domestic and cross-border shareholders’, banking and investment funds disputes. Alongside his duties as managing partner, Marc Kleyr maintains an active disputes practice, displaying a ‘dedication to winning cases that is simply unrivalled,’ particularly in relation to shareholders’ and insolvency-related litigation. Rosario Grasso co-heads the team alongside Donata and Kleyr and is particularly effective at handling white-collar cases. Pascal Sassel joined Brouxel & Rabia Luxembourg Law Firm in September 2023.

Leading individuals

Donata Grasso - KLEYR GRASSO

Rosario Grasso - KLEYR GRASSO



Practice head(s): Marc Kleyr; Donata Grasso; Rosario Grasso

Other key lawyers: Henry De Ron; Emilie Waty


‘The litigation team is very responsive when it comes to day-to-day work. They are also quick and efficient with their deliverables. The quality of their work is excellent.’

‘They combine swiftness, responsiveness and technical skills, plus the ability to understand the client’s expectations.’

‘Marc Kleyr has a dedication to winning cases that is simply unrivalled.’

‘Donata Grasso is very knowledgeable and provides practical and commercial advice.’

‘Donata Grasso is very responsive and provides clear and comprehensive legal advice and drafts very effective and clear written pleadings and other court submissions.’

‘Donata Grasso is a very experienced practitioner who is well-versed at dealing with shareholders’, banking and investment funds disputes in a cross-border environment.’

‘Marc Kleyr is truly qualified in the resolution of shareholder disputes, as well as in succession issues.’

‘Marc Kleyr’s dedication to perfection and winning cases is simply unrivalled.’

Key clients

  • Ikodomos Holding S.C.A. (IKO Real Estate Group)
  • Ernst & Young S.A.


Employment - Tier 1

KLEYR GRASSO provides ‘solutions-oriented, dynamic and responsive’ advice across a broad swathe of contentious and non-contentious social and employment law issues impacting employers from a range of industry sectors. Christian Jungers is ‘totally committed and absolutely trustworthy,’ regularly picking up high-profile mandates regarding collective bargaining agreements and social plans, as well as disputes relating to sexual and moral harassment. The ‘exceptional’ Anissa Bali provides ‘high-quality advice’ to new employers establishing in Luxembourg and is also regularly engaged in high-profile termination cases and the subsequent settlement negotiations. Céline Defay is a popular choice among domestic and international corporates seeking reassurance that all their policies comply with Luxembourg labour laws. Philippe Ney's wide-ranging expertise includes the negotiation of social plans and collective bargaining agreements, while ‘very knowledgeable and responsive’ counsel Sandra Rapp excels at advising on cross-border matters.

Leading individuals:

Christian Jungers - KLEYR GRASSO

Next Generation Partners:

Céline Defay - KLEYR GRASSO

Practice head(s): Christian Jungers

Other key lawyers: Anissa Bali; Céline Defay; Philippe Ney; Sandra Rapp


‘They provide solutions-oriented, dynamic and responsive.’

‘They clearly know everything about labour law and everybody related to it in Luxembourg.’

‘The outstanding Christian Jungers is extremely competent, totally committed and absolutely trustworthy. I rarely met an individual so passionate and competent about his/her area of law.’

‘The exceptional Anissa Bali provides high-quality advice.’

‘Sandra Rapp is very knowledgeable and responsive.’

‘They have in-depth knowledge of the different legal areas. You usually get a swift replies to your requests.’

‘They have a good understanding of the needs of our company.’

‘They clearly know everything about labour law and everybody related to it in Luxembourg.’

Key clients

  • Vodafone Procurement Company S.à r.l.
  • Wavestone
  • Cargolux
  • BDO Luxembourg
  • SES


Real estate and construction - Tier 1

The ‘outstanding’ team at KLEYR GRASSO provides ‘responsive and accurate advice’ to real estate entities, including developers, throughout the life cycle of a transaction within the private, commercial and corporate real estate space, including advice on co-ownership matters, acquisition and sales agreements, public procurement issues, lease and rental agreements, and project management agreements. Appreciated for her delivery of a ‘timely and excellent service’, Yasmine Poos regularly advises private sector clients on lease negotiations/renewals, while her work on the construction front regularly sees her defending the Luxembourg state in public procurement disputes. François Collot co-heads the group alongside Poos and is best-known for his construction and real estate litigation prowess.

Leading individuals

François CollotKLEYR GRASSO



Practice head(s): François Collot; Yasmine Poos

Other key lawyers: Henry De Ron; Fanny Mazeaud; Melanie Trienbach


‘The outstanding team provides responsive and accurate advice.’

‘This team has longstanding experience in private, commercial and corporate real estate matters and helps clients throughout each project phase.’

‘Yasmine Poos always delivers timely and excellent service even in stressful situations.’

Key clients

  • Tralux SARL
  • Kalschesbrück
  • Les Jardins du Luxembourg / Thomas & Piron
  • Ministère de la Mobilité et des Travaux Publics
  • IKO Real Estate
  • Fonds du Logement
  • FARE S.A.
  • Tracol Immobilier
  • Luxair
  • Fonds de Compensation Commun au Régime Général des Pensions


Banking, finance and capital markets - Tier 3

The ‘very commercial and relationship driven’ team at KLEYR GRASSO provides ‘efficient solutions’ to a borrower-focused client base on their ongoing financing needs as well as to facilitate their transactional needs. Combining ‘extensive legal knowledge and commercial acumen,’ team head Renata Jokubauskaite regularly advises on acquisition finance mandates. The arrival of ‘very well reputed practitioner’ Pierre-Alexandre Degehet from BSP in June 2023 also strengthens the team in light of his broad ranging transactional and regulatory expertise.  


Practice head(s): Renata Jokubauskaite

Other key lawyers: Mevlüde-Aysun Tokbag; Delphine Tempé; Pierre-Alexandre Degehet


‘A boutique firm with an approach as efficient as a big law firm. They are flexible enough to negotiate fees and timelines and have commercial acumen along with remarkable legal skills.’

‘They are very commercial and relationship driven.’

‘What makes this practice unique is their understanding of the client’s needs and the capacity that they have to propose adequate and efficient solutions to the legal difficulties that are encountered.’

‘Renata Jokubauskaite is very professional, understanding and reliable.’

‘The outstanding Renata Jokubauskaite combines extensive legal knowledge and commercial acumen, and has an easy-going persona.’

‘Pierre-Alexandre Degehet is a very well reputed practitioner.’

Key clients

  • TA Associates
  • Kodehyve


Commercial, corporate and M&A - Tier 3

The ‘proficient and skilled’ team at KLEYR GRASSO is particularly accomplished at handling growth equity and venture capital matters from funds and investees. In this regard, the ‘responsive and solutions-focused’ Delphine Tempé and Jérôme Burel continue to regularly advise TA Associates on its downstream investment work. The arrival of the ‘very well reputed’ Pierre-Alexandre Degehet, who joined in June 2023 from BSP, enhances the team in light of his broad expertise which covers private equity structuring and joint ventures, as well as capital markets and corporate governance matters.

Leading individuals

Pierre-Alexandre DegehetKLEYR GRASSO


Practice head(s): Jean-Paul Spang; Delphine Tempe; Renata Jokubauskaite

Other key lawyers: Pierre-Alexandre Degehet; Jerome Burel


‘Kleyr Grasso does not treat its clients as numbers, but establish a personal relationship with them. Although it is not part of an international network, it serves its clients as an international firm, and has the necessary resources to do so.’

‘Really proficient and skilled team with an ability to understand business constraints and keep things as simple as possible while complying with legal obligations.’

‘The team is very responsive and provides succinct advice.’

‘Renata Jokubauskaite has a broad knowledge and experience on all aspects that were relevant for our transaction and it helped to speed up the closing process.’

‘Renata Jokubauskaite is proactive in all matters and strict to the point. She always delivers on time and is available 24/7.’

‘Pierre-Alexandre Degehet is a very well reputed practitioner.’

‘Pierre-Alexandre Degehet is a great lawyer with good industry knowledge.’

‘Delphine Tempe and Jerome Burel provide tailor-made, responsive and solutions-focused advice.’

Key clients

  • Samsonite International S.A.
  • TA Associates
  • Kodehyve
  • IK Investment Partners
  • Shareholders of IFSAM
  • Vivalto Partners


Investment funds - Tier 3

Increasingly visible in the market following a series of recent strategic hires, most notably that of Mevlüde-Aysun Tokbag in June 2022 following the dissolution of Wildgen, KLEYR GRASSO provides 'responsive and pragmatic' advice to asset managers structuring Luxembourg fund vehicles which invest across a range of alternative asset classes. In this context Tokbag, who now heads both the funds and German desks, has been particularly successful in gaining market share among German fund managers. The 'exceptional' Luc Courtois, who was a new hire at the beginning of 2023 from NautaDutilh, also strengthens the team as a result of his 'deep knowledge of the intricacies of the industry', both in terms of UCITS and alternative funds.


Practice head(s): Mevlüde-Aysun Tokbag

Other key lawyers: Luc Courtois; Fabian Frankus; Garry Reuland


‘An exceptional group of professionals specialising in investment funds. Their collective expertise and seamless collaboration are instrumental in achieving our legal objectives.’

‘The team provides responsive and pragmatic legal advice that works.’

‘Very reactive, straight to the point and responsive.’

‘Mevlüde-Aysun Tokbag is responsive, pragmatic and solutions-oriented.’

‘Mevlüde-Aysun Tokbag is a strong female leader through and through.’

‘Luc Courtois is an exceptional lawyer with an unrivalled expertise in investment funds. His unwavering dedication and deep knowledge of the intricacies of the industry prove invaluable.’ 

Key clients

  • Ersel Gestion Internationale S.A.
  • Farringdon Capital Management
  • Prime Properties


Private equity - Tier 3