Hildrun Siepmann

Born in Hamburg in 1963, Jan Dietze studied law in Passau and at King’s College in London, UK, where he obtained his Diploma of Legal Studies. He also studied in Freiburg and at Europa-Kolleg in Bruges, Belgium, where he obtained the Diplôme D’Hautes Études Européennes. Jan Dietze has been a lawyer at ZENK since 1995. His practice focuses on corporate and commercial law and M&A. He also specializes in antitrust law and compliance. Mr. Dietze is a member of ...

Olaf Hartenstein is a top attorney recognized by Best Lawyers in the practice area(s) of Maritime Law and Transportation Law. Olaf, 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 Olaf is held by other top lawyers in the same geographic and legal practice area.

Oliver Dankert is a top attorney recognized by Best Lawyers in the practice area(s) of Restructuring and Insolvency Law. Oliver, 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 Oliver 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...

Dieter Schwampe is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Maritime Law and Transportation Law. Dieter, who practices law in Hamburg, Germany, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dieter 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.

Dr Myrna Meyer is an expert in intellectual property, with a focus on competition, trademark, copyright, and IT law. She advises and represents national and international companies—particularly in the luxury and consumer goods sectors—ranging from major corporations to start-ups. Dr Meyer assists clients with marketing strategies, product development, communication, advertising, and international contract drafting. She represents clients in and out of court, prioritising practical...

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

Born in Hamburg in 1962, Birgitta Weihrich studied law in Hamburg. After completing her legal clerkship – including a post at the Directorate-General for Competition of the European Commission in Brussels and Speyer – she was admitted to the bar in 1992. After spending a number of years in a commercial law firm in Northern Germany and as a legal advisor and authorized signatory of an insurance company, she joined ZENK in 2018. She has many years’ experience in both a wide ra...

Born in Lübeck in 1974, Dr. Peer Feldhahn’s career as a lawyer began in 2004. He has been a specialist in construction and architectural law since 2009.He spent the first 10 years of his career at a renowned construction law firm and the following five years as a partner in a commercial law firm. Since January 2019, Dr. Peer Feldhahn has been supporting the real estate & construction division of ZENK Rechtsanwälte. He advises clients on major projects in the contract draft...