CASTELLION regroups independent lawyers whom each practice under their own responsibility in their fields of expertise. The lawyers combine their expertise and form multidisciplinary teams whenever necessary.

The firm works in all areas of law. It assists and represents Swiss and international clients: private and public companies, financial institutions, corporate executives, public authorities and private clients.

Its partners are involved in complex cases brought before Swiss, foreign and arbitration courts in the context of mass litigation, commercial disputes, criminal lawsuits and regulatory investigations.

The firm’s partners maintain excellent relationships with leading law firms around the world, which enables them to assist their clients in all their international projects and litigation. The firm has notably developed a renowned expertise in the energy sector and in the fields of construction and real estate law. It offers both its institutional and private clientele tailor-made support in Switzerland and abroad in the context of negotiating investment contracts, drawing up and performing public contracts.