Rosinus Partner operates comfortably across various industries, such as finance, technology, pharmaceutical, and construction, covering advice on offences including embezzlement, money laundering, breach of trust, insider trading, and corruption. The practice is steered by Christian Rosinus, who combines expertise in commercial, white collar and criminal tax law, while Mathias Grzesiek is recommended for criminal law related to the healthcare sector. Arthur Leonhardt joined from Clifford Chance in April 2025, bolstering the team’s capabilities in foreign trade and sanctions law. Janina Brandau left the firm in March 2025.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Testimonials
Collated independently by Legal 500 research team.
- "Absolute commitment to quality and finding the most efficient solution for this specific case.
- "Development of legal tech tools, very client-oriented, absolute experts."
- "Highly dedicated and responsive – without losing sight of the legal perfection typical of this firm."
- "Overall, a highly recommended team that offers first-class advice."
- "Small team guarantees personal attention."
- 'Absolute commitment to quality and finding the most efficient solution for this specific case.
- 'Highly dedicated and responsive – without losing sight of the legal perfection typical of this firm.'
- 'Overall, a highly recommended team that offers first-class advice.'
- 'Small team guarantees personal attention.'
- 'Development of legal tech tools, very client-oriented, absolute experts.'
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Christian Rosinus
Other key lawyers
Mathias Grzesiek; Mirjam Steinfeld; Arthur Leonhardt