Roman Ronneburger

Born in Aachen in 1965, Dr. Oliver Nowoczyn studied law in Constance, Geneva (Switzerland) and Freiburg/Breisgau. After completing his legal clerkship in Berlin and Boston, USA, he received his doctorate in European law in Freiburg in 1995. His thesis was on the subject of “Educational policy competencies of the EU after Maastricht”. Dr. Oliver Nowoczyn has been a lawyer at ZENK since 1995 and a notary since 2007.

Martin Wirtz works in all fields of intellectual property matters, with a particular emphasis on trade mark, competition, and copyright law, including litigation. A further focus of his work is patent infringement proceedings. His clients include large and medium-sized firms as well as international companies and associations from a wide variety of different areas. Martin Wirtz studied law at the University of Passau, the University of Freiburg, the University of Cologne, and at Queens' Colle...

Thomas Schulz is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Energy Law and Mergers and Acquisitions Law. Thomas, who practices law in Berlin, Germany, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas is held by other top lawyers in the same geographic and legal practice area.

As a Patent Attorney Thomas L. Bittner focuses on technical intellectual property rights, especially patents and utility models, both with respect to filing and prosecution, as well as litigation. Also, he advises and represents his clients in opposition proceedings and revocation proceedings before the German authorities and courts, and before the European Patent Office. Thomas L. Bittner studied physics at the Humboldt-Universität of Berlin. After his PhD he worked as a scholarship hol...

Anja Branz is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Anja, 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 Anja is held by other top lawyers in the same geographic and legal practice area.

Anika Mitzkait is a partner in the finance department. She focuses her practice on national and international financings for real estate transactions of all asset classes. Her practice covers a wide range of finance-related matters of real estate investments, starting from development financings via acquisition financings through to restructurings, and also includes any refinancings of the lenders, whether by syndication, securitization or loan sales. Anika advises national and international ...

Adrian Löser is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Adrian, 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 Adrian is held by other top lawyers in the same geographic and legal practice area.

Born in Göttingen in 1966, Dr. Martin Düwel studied law and history in Regensburg, in Aberdeen, UK and at the Free University of Berlin. From 1994 to 1998, he worked as a research assistant at the Institute for State Studies, Constitutional and Administrative Law. He has been active as a lawyer in Berlin since 1996. In 1999, he received his doctorate in constitutional law on the subject of of “Oversight Powers of the Federal Constitutional Court in Constitutional Complaints ag...

Philipp Osteroth is a Shareholder in the German Corporate/M&A team. He focuses his practice on M&A and Private Equity transactions and is an expert with particular experience in the real estate as well as the technology & telecommunications sector. He also has a special focus on matters regarding infrastructure 4.0 (especially in the logistics, mobility and defense industry) and regularly advises national and international clients on the structuring of joint ventures. Philipp has ...

Andreas Grünwald is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law, Entertainment Law, Media Law, Regulatory Practice, Technology Law and Telecommunications Law. Andreas, who practices law in Berlin, Germany, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andreas is held by other top lawyers in the same geographic and legal practice area.