Matthias Schmidtheisler

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...

Lawyer Partner

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 ...

Dr Menso Engelmann has been practising as a lawyer in the field of corporate law and M&A since 2008. He advises private individuals, strategic and financial investors, private equity funds, family businesses, joint ventures, and listed companies on all aspects of corporate transactions. He also provides guidance on transactions in the context of corporate crises and restructurings under transformation law, as well as on real estate transactions. In corporate law, his focus is on stock cor...

Hans Markus Wulf is a top attorney recognized by Best Lawyers in the practice area(s) of Data Security and Privacy Law and Information Technology Law. Hans Markus, who practices law in Hamburg, Germany, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hans Markus 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. Wolfgang Hopp studied law, biology and English in Göttingen and completed his legal clerkship in Lower Saxony. From 1997-2000, he was a research consultant at the University of Münster’s Central Institute for Spatial Planning. In 1999, he received his doctorate in spatial planning law, with a thesis on the subject of “Legal and Enforcement Issues in Spatial Planning Procedures”. Dr. Hopp has been a lawyer at ZENK since 2000. He specializes in advising and assis...

Harald Ick is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Harald, 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 Harald 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...

2011 Arbitrator of the Independent Film & Television Alliance (IFTA) 2008 Board-Certified Attorney for Intellectual Property Law (Fachanwalt für gewerblichen Rechtsschutz) 2007 Board-Certified Attorney for Copyright and Media Law (Fachanwalt für Urheber- und Medienrecht) 1998 New York Bar Exam (Attorney-at-Law) LL.M. in Trade Regulations, New York University (NYU), USA 1997 Second State Examination in Law, Regional Court of Appeals Hamburg (legal trainee at German Embassy Singap...