Carsten A. Ritter

Lawyer Partner

Born in Göttingen in 1974, Dr. Stefanie Hartwig studied law in Kiel and Liège from 1994 to 1998 and completed her postgraduate studies in business law in Hamburg. Thereafter, she worked as a trainee lawyer in Hamburg and New York and as a research associate at the University of Hamburg. She completed her doctorate in 2002. Ms. Hartwig has been working as a lawyer since 2003, initially in a major international law firm and since 2005 at ZENK. Since 2007, she has also been a special...

Askan Deutsch advises and represents German and international clients in all areas of intellectual property law. He has extensive experience in competition, trade mark, design, copyright and domain law, as well as in patent, utility model, IT and data protection law. He supports companies in developing trade mark strategies, designing advertising measures and websites, and enforcing or defending preliminary injunctions and legal proceedings, including before the German Patent and Trade Mark O...

René Krohn is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. René, who practices law in Hamburg, Germany, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which René is held by other top lawyers in the same geographic and legal practice area.

Lawyer, Accredited Specialist for Public Procurement Law Partner

Sergio Binkowski is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Sergio, who practices law in Hamburg, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sergio is held by other top lawyers in the same geographic and legal practice area.

Patrick Zeising is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Patrick, who practices law in Hamburg, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick is held by other top lawyers in the same geographic and legal practice area.

Julia Luther is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Julia, who practices law in Hamburg, Germany, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Julia is held by other top lawyers in the same geographic and legal practice area.

Melanie Eilers is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. Melanie, who practices law in Hamburg, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Melanie is held by other top lawyers in the same geographic and legal practice area.

Born in Helgoland in 1966, Dr. Carsten Oelrichs trained as an industrial business administrator before going on to study law at the University of Hamburg, where he also worked as a research assistant at the Chair of Commercial, Shipping and Business Law. He received his doctorate in 1998, with a thesis on “Creditor Participation and Voting Bans in New Insolvency Proceedings”. Dr. Oelrichs has been a lawyer at ZENK since 1998. For several years running, he has been named by JUVE as...