Berthold Brinkmann

Joachim Jung is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Joachim, 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 Joachim is held by other top lawyers in the same geographic and legal practice area.

Lawyer Senior Associate

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...

Elke Umbeck is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation, International Arbitration and Litigation. Elke, 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 Elke is held by other top lawyers in the same geographic and legal practice area.

Thomas Rieck is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Thomas, 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 Thomas 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.

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...

Dr. Jörn Bosse serves clients primarily from the corporate sector in Hamburg, with a focus on construction and real estate law. His work involves assisting companies in navigating the complexities of real estate project development. This includes obtaining necessary building permits, maintaining neighborhood relations, and overseeing construction operations. Dr. Bosse emphasises the importance of resolving disputes out of court, though he is prepared to litigate when needed. Real estate ...

Dr. Christian Freudenberg, born 1967 in Hagen, studied law at the Ruhr University, Bochum. Thereafter, he worked as a research assistant at the University of Rostock and the University of Hagen. He has been admitted to practise law in 1997. Since 2006, he is listed as a certified specialist in intellectual property law. From 1998 to 2000 he was Director of Business Affairs at edel music AG. Since 2001, he has been working as an attorney, joining a business law practice spezialising in media a...