Astrid Lauterwein

Aldo Trentinaglia, born in Munich in 1982, completed basic studies in philosophy, logic and philosophy of science at the Ludwig Maximilian University in Munich on a scholarship from the Friedrich Ebert Foundation. Later followed law studies at the Bucerius Law School in Hamburg with a stay abroad in Sydney, Australia, as a scholarship holder of the German National Academic Foundation. He completed his legal clerkship at the Hanseatic Higher Regional Court. While working he completed his train...

Lawyer and Notary Partner

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...

Jesko Stark focuses his practice on restructuring and insolvency matters. He was admitted to the Berlin bar in 2008 and has been regularly appointed as an insolvency administrator and trustee from the courts of Berlin Charlottenburg and Potsdam since 2012. Jesko is admitted as a specialist lawyer for insolvency law (Fachanwalt für Insolvenzrecht) and has ten years of experience in the fields of insolvency and restructuring matters. He advises national and international companies prior to...

Christiane Huismans, born in 1966 in Telgte (Westphalia), studied law in Münster following her banking apprenticeship in Bremen and has been working as a lawyer since 1996. Since 2017, she has been offering support in conflict situations as a mediator. Christiane Huismans is a partner at ZENK.* Due to her many years of experience as a lawyer in insolvency administrator law firms, on the side of intensive support of the credit industry as well as in large international law firms, Christia...

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 ...

Wolfgang Schönig is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law, Information Technology Law, Intellectual Property Law and Technology Law. Wolfgang, 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 Wolfgang is held by other top lawyers in the same geographic and legal practice area.

Born in Dortmund in 1975, Dr. Anu Elina Birkefeld studied law from 1994-1999 at the University of Bielefeld and the Ruhr-University Bochum. She completed her legal clerkship at the District Court of Dortmund between 1999 and 2001 and has been working as a lawyer ever since. Dr. Birkefeld has been with ZENK since 2003. Furthermore she obtained her doctorate in employment and sports law at the University of Bielefeld in 2004, with a thesis on “The Employment Relationship of the Football C...

Stephanie Hotopp is a top attorney recognized by Best Lawyers in the practice area(s) of Restructuring and Insolvency Law. Stephanie, 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 Stephanie is held by other top lawyers in the same geographic and legal practice area.

Studies in mechanical engineering and process engineering at the RWTH Aachen and the Imperial College London (until 1991) Doctoral degree (Dr.-Ing.) at the ETH Zürich, Laboratory for Technical Chemistry (1991-95) Consultant (1991-95) in the area of process simulation und dynamics Patent attorney (since 1999), partner at Maikowski & Ninnemann (since 2000) LL.M. (European Intellectual Property Law) at the Kurt-Haertel Institute, Fernuni Hagen Since 2002 lecturer und since 2009 honorary...