Martin Oltmanns

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...

Thomas Bohle is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Thomas, 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 Thomas is held by other top lawyers in the same geographic and legal practice area.

Lokke Moerel is a top attorney recognized by Best Lawyers in the practice area(s) of Information Technology Law and Technology Law. Lokke, 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 Lokke is held by other top lawyers in the same geographic and legal practice area.

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

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

Josef Hofschroer focuses his practice on corporate law, with an emphasis on M&A transactions for national and international clients. He particularly advises on all aspects of capital markets and securities law. Furthermore, his practice includes distressed investments as well as joint ventures. Josef has particularly wide-ranging experience in the fields of energy, technology, telecommunications and real estate. Among his clients are start-ups, medium-sized and large companies as well as ...

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

Christoph Riese is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law, Public Law and Public Private Partnership. Christoph, 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 Christoph is held by other top lawyers in the same geographic and legal practice area.

Jörg Michael Siecke is a lawyer and partner at the Berlin office of Friedrich Graf von Westphalen & Partner. He advises on real estate transactions with a focus on commercial real estate, in particular retail and light industrial. He further assists with sale and purchase agreements and legal due diligence cases as well as other aspects of real estate law (commercial tenancy law, neighbor law, broker law). He speaks German and English.

Daniel Benighaus works as Shareholder in the German real estate practice. He advises national and international investors on project developments, real estate transactions and ongoing asset management. One focus of his work is advising on complex project developments such as developments of entire quarters, smart buildings, joint ventures and data centers. He has particular expertise in the sale of project developments in forward deals. Daniel also works as a notary with a focus on real estat...