Kristian J. Heiser

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...

Dr Justus Jansen (Lawyer of the Year Litigation, Hamburg, 2020, Lawyer of the Year Trade Law, Hamburg, 2022) is heading the Dispute Resolution practice group at GSK Stockmann since 2014. The team has 23 members and is thus considered one of the largest dispute resolution teams in Germany with widely recognised expertise and track record in commercial, banking & finance, energy, international plant engineering and corporate disputes as well as in post-M&A disputes. In addition, investm...

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.

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...

Stefan Bretthauer is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Stefan, 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 Stefan 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...

Arne Schmidt is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation, Restructuring and Insolvency Law and Tax Law. Arne, 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 Arne is held by other top lawyers in the same geographic and legal practice area.

Henning Anders , born 1967 in Wedel, is attorney-at-law and advises as partner at Möhrle Happ Luther healthcare companies. His clients include national and international pharmaceutical companies, and other involved parties within the healthcare system as well as manufacturers of medical products or care providers. Henning Anders and his team advise in almost every relevant area of the healthcare system. The focus of his legal advisory services is on regulation for market access and reten...

Born in Wesel in 1961, Dr. Ralf Hüting studied law in Bonn and has worked as a lawyer since 1992. In 1996, he received his doctorate with a thesis on “The Effect of Regulatory Tolerance in Environmental Criminal Law”. Dr. Hüting advises and represents commercial enterprises, federal & state ministries, supervisory authorities, cities, municipalities and associations, particularly on cross-jurisdictional projects such as the construction or modernization of industrial...

Sönke Görgens is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Real Estate Law. Sönke, 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 Sönke is held by other top lawyers in the same geographic and legal practice area.