Martin Oltmanns

Stephan Rau is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology Law and Life Sciences Practice, Corporate Law, Health Care Law, Mergers and Acquisitions Law and Pharmaceuticals Law. Stephan, who practices law in Berlin, Germany, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephan is held by other top lawyers in the same geographic and legal practice area.

The founding partner of Knauer& Sören Schomburg advises national and international clients in the areas of commercial criminal law and tax criminal law, international criminal law, and extradition law. He has extensive experience in complex, frequently transnational internal investigations and with respect to search and seizure, especially raids involving data confiscation. He defends clients throughout Germany, in Europe and before the European Court of Justice (ECJ), and against IN...

Christoph Enaux is a partner with Greenberg Traurig Germany. LLP. He chairs the German Telecommunications Sector Group as well as the German Regulatory and Competition Practice Group of Greenberg Traurig. Christoph focuses on advising domestic and international clients in the areas of German and EU telecommunications and media regulation and competition law. He advises on commercial and regulatory aspects of new business models as well as on regulatory, merger control and antitrust proceeding...

Sara Berendsen advises on corporate transactions of all kinds, including acquisition and sale, joint ventures and restructuring. Sara has broad experience in the field of M&A transactions for national and international clients (asset and share deals) with a focus on the media, technology & telecommunications and real estate sectors. In addition, she advises on capital market issues and joint ventures.

Dorothee von Einem advises companies on all labor and employment law related matters. A strong focus of Dorothee's practice is advising international clients on employee data protection and other compliance issues as well as employment contracts. Her expertise further covers all issues in connection with restructurings, reallocations and shut down of businesses, in particular with regard to negotiations and communication with works councils and authorities. She also routinely advises on all l...

Sebastian Engels advises clients in all aspects of trade mark, copyright, and unfair competition law. He works with German and international clients to develop IP strategies both in Germany and abroad. As a special focus of his expertise he is advising and representing E-Commerce and IT-providers amongst others with regard to consumer protection regulations, transactional matters, data protection law, and domain name law. Sebastian Engels studied law at the University of Constance (Germany) a...

Fabian Meinecke is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense and Criminal Tax Practice. Fabian, who practices law in Berlin, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fabian is held by other top lawyers in the same geographic and legal practice area.

Born in Duisburg in 1974, Dr. Kostja von Keitz studied law in Düsseldorf. He received his doctorate in European nature conservation and national administrative procedural law in 2005, with a thesis on the subject of “The Legal Protection of Private Individuals against Special Areas of Conservation”. He began his career as a lawyer in 2005, working initially for a major international law firm. He became a specialist in administrative law 2008 and joined ZENK in 2009. He has be...

Hans Georg Helwig is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Hans Georg, who practices law in Berlin, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hans Georg is held by other top lawyers in the same geographic and legal practice area.

Markus Hutschneider is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Markus, who practices law in Berlin, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Markus is held by other top lawyers in the same geographic and legal practice area.