The core activity of Köstenbaum & Associés SA is the practice of law, particularly the legal advice and representation of private individuals, families, companies and organizations in various areas of law, including: corporate law, contract law, real estate and construction law, labor law, criminal law, family law and divorce, inheritance law, wealth structuring, and the establishment and management of companies, trusts and foundations. The company provides individual solutions and legal services to its clients and represents them before courts and authorities.