Martin Mengden

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...

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.

Michael Heise is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Michael, 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 Michael is held by other top lawyers in the same geographic and legal practice area.

Ralf Emig is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Ralf, 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 Ralf is held by other top lawyers in the same geographic and legal practice area.

Fabian Winters is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law and Public Private Partnership. 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.

Kirsten Schümann-Kleber is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Restructuring and Insolvency Law. Kirsten, 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 Kirsten is held by other top lawyers in the same geographic and legal practice area.

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.

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.

Natalie Hsiao is Local Partner in the Corporate/M&A team and focuses her practice on complex corporate transactions of all kinds, including acquisition and sale processes, joint ventures and restructurings. Natalie has broad experience in the field of M&A transactions for national and international clients with a focus on the real estate, infrastructure and the media, technology and telecoms sectors. In addition, she advises on all aspects of venture capital investments. Natalie repre...

Dr. Stefan Ohlhoff is a partner in the firm's Regulatory and Government Affairs Department. He co-chairs the EU Regulatory Group and is a member of the Antitrust and Competition and International Trade, Investment and Market Access Practice Groups. He joined the firm in 1999. Dr. Ohlhoff assists clients in merger proceedings, antitrust investigations and litigation before the European Commission, the German Federal Cartel Office and European and German courts. In addition, he advises clients ...