Dispute Resolution - Luxembourg | Band 1

What the team is known for

KLEYR GRASSO is a pre-eminent firm, well known in the market for its focus on high-profile dispute resolution, including arbitration proceedings and the enforcement of arbitral awards. It represents both public and private entities hailing from the energy, private equity and engineering sectors. The law firm is active in shareholder disputes, liquidation matters, post-transactional litigation and criminal cases. Furthermore, KLEYR GRASSO advises on professional negligence and product liability litigation.

Work Highlights

  • KLEYR GRASSO defended Luxembourg entities of the Triton Group in proceedings brought before the Luxembourg courts by Signal Capital Partners.


"KLEYR GRASSO have provided strong support and quick responsiveness in matters."

"KLEYR GRASSO had a good case and were swift, obtaining what was needed when requested."

Notable Practitioners

Marc Kleyr | Band 1

Marc Kleyr has a strong focus on shareholder disputes and professional negligence actions. He is a popular choice among clients from the financial services and engineering industries.

Donata Grasso | Band 2

Donata Grasso assists with shareholder and joint venture agreement disputes. She is also active in the enforcement of arbitral awards.

"Donata Grasso was very strategic, obtaining exceptional results."

Pascal Sassel | Band 3

Pascal Sassel advises investors and energy sector clients on shareholder litigation, contractual disputes and enforcement proceedings.

"Pascal Sassel's advice was always top notch, timely and very pragmatic."

Employment - Luxembourg | Band 1

What the team is known for

KLEYR GRASSO has an established employment practice providing top-tier advisory and litigation services to clients in a wide range of industries, including financial services companies and TMT companies. The law firm advises on individual terminations, teleworking policies, employment safeguarding plans and restructurings. The practice represents clients in harassment claims and unfair dismissal claims, as well as assisting with the employment aspects of mergers.

Work Highlights

  • KLEYR GRASSO advised SES on a range of employment matters including individual terminations and litigation cases.


"KLEYR GRASSO provides excellent client service: the lawyers are very responsive and very flexible in responses."

Notable Practitioners

Christian Jungers | Band 2

Christian Jungers advises a roster of clients, including media companies and financial institutions, on safeguarding plans and social plans.

Céline Defay | Band 3

Céline Defay has notable strength representing clients during dismissal proceedings and settlement agreements. She also has experience of the implementation of internal policies and advising on data breaches.

Investment Funds - Luxembourg  | Chambers Global 2023

Lawyers profile | Global 2023: Investment Funds

Luc Courtois | Band 4

"He blends business acumen, extensive knowledge of the law and a friendly disposition with clients."

Mevlüde-Aysun Tokbag | Foreign Expert | Germany
Mevlüde-Aysun Tokbag leads KLEYR GRASSO's German desk and is dual-qualified in Germany and Luxembourg. She frequently assists German clients with the financing and structuring of Luxembourg-based investment vehicles and funds.