Jan Mommsen

Jan Tobias Hartmann is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Jan Tobias, who practices law in Hamburg, Germany, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jan Tobias is held by other top lawyers in the same geographic and legal practice area.

Listed in "Best Lawyers Germany" for Public Law (Ranking Handelsblatt/Best Lawyers 2021)

Lawyer Partner

Sonja Schulz was born in Bremen in 1976. She studied law in Münster and Leuven, Belgium. She completed her practical training in Münster, Washington D.C. and Brussels. In addition, she completed an education in Anglo-American law, a subject-specific foreign language training, postgraduate studies in European law and training in change management. In 2003 she received a Master of European and Comparative Law from the University of Ghent, Belgium. Since 2006, Sonja Schulz has been a l...

Jan Erik Spangenberg specialises in dispute resolution, litigation and arbitration. He acts both as counsel and as arbitrator. He assists companies, governments and individuals in navigating complex disputes, in particular international commercial and investment arbitrations. He also advises governments and investors in relation to foreign investments and public international law. Jan Erik Spangenberg has successfully represented clients in many high stakes arbitrations (including ICC, DIS, S...

Lawyer, Accredited Specialist in EmploymentAssociated Partner

Oliver Jauch is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law. Oliver, who practices law in Hamburg, Germany, has been recognized since 2027. 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 Rheda-Wiedenbrück in 1967, Dr. Henrik Nacke studied law in Münster. During his legal clerkship and dissertation period, he worked as a research assistant at the Chair for Public Law, International Law and European Union Law at the University of Münster. In 1999, he obtained a doctorate”on the subject of “Protection against Dismissal in Corporate Transformations”, during which he was supported by the State of North Rhine-Westphalia’s fund for high...

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 ...

Born in Hamburg in 1963, Alexander Baden studied from 1982-1988 in Passau and Hamburg. He has been with ZENK Rechtsanwälte since 1990. Today, he focuses on real estate law and project development and is responsible for providing support for complex transactions. From 2011-2018, Mr. Baden was Chairman of the Supervisory Board of BEOS AG, Berlin. For several years running, he has been listed as one of Germany’s top business lawyers in the ranking table “Germany’s Best Law...