Constantin Lauterwein

Dr. Alex Petrasincu is Managing Partner at Hausfeld in Germany. He advises on all aspects of European and German competition law with a special focus on antitrust litigation. Alex is specialized in representing parties in cartel damages actions before the German courts, and has advised on damages actions in various jurisdictions. Alex has represented parties in and advised on actions before numerous German District Courts, Courts of Appeals, the German Constitutional Court, as well as the Eur...

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

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

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...

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.

Burkard Wollenschläger is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law and Regulatory Practice. Burkard, 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 Burkard 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.

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...

Since 1990, Dr. Martin Schaefer had been working for the German industry associations of the recording industry (today: BVMI). As legal advisor and later as managing director he was involved in the development of innovative industry projects for the emerging online-sector. In 2001, he joined BMG (Bertelsmann Music Group) as Vice President, Legal Counsel Europe, before leaving the company at the beginning of 2004 to become a partner at the law firm of BOEHMERT & BOEHMERT. His client base i...

Henning Sieber focuses his practice on real estate and corporate law. He regularly advises on real estate acquisitions and sales, including the structuring and financing of real estate transactions, and has broad experience in advising in particular institutional clients on transactions in Germany and abroad. Henning is also experienced in the restructuring of real estate investments, including advising on restructuring and refinancing of distressed investments as well as on real estate inves...