Civil law litigation
- before all higher regional, district, and local courts in Germany
- before the Court of Justice of the European Union (CJEU) in Luxembourg
- before the federal courts of the USA
Tax law litigation
- before the Federal Fiscal Court and all fiscal courts in Germany
Administrative appeal proceedings
- before tax and other authorities in Germany
Labor law litigation
- before the Federal Labor Court, the state labor courts,
- before conciliation boards
Criminal defense concerning tax fraud
- before fiscal authorities and courts in Germany