Thomas Derlin

Karla Gubalke is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Karla, who practices law in Berlin, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Karla is held by other top lawyers in the same geographic and legal practice area.

As a Patent Attorney Thomas L. Bittner focuses on technical intellectual property rights, especially patents and utility models, both with respect to filing and prosecution, as well as litigation. Also, he advises and represents his clients in opposition proceedings and revocation proceedings before the German authorities and courts, and before the European Patent Office. Thomas L. Bittner studied physics at the Humboldt-Universität of Berlin. After his PhD he worked as a scholarship hol...

Claudia Gehricke, born 1986 in Berlin, studied law at the European University Viadrina in Frankfurt/Oder and at the University of Essex, UK. She completed her legal traineeship in Berlin at the Court of Appeal and was already working at ZENK’s Berlin office during her traineeship. Further stages of her legal traineeship took her to the Federal Ministry of Economics and an international business enterprise, among others. Claudia Gehricke has been a lawyer at ZENK since 2015. She is a sal...

Ronald Buge is a partner at POELLATH in the private funds team in Berlin. Ronald advises fund managers on legal and tax matters relating to the structuring of alternative investment funds. Further, he advises institutional investors such as insurance companies and pension funds as well as family offices in connection with investments in such funds. He focuses on German and international tax law, including investment tax law, procedural law and tax compliance issues (FATCA, CRS, DAC 6). Client...

Georg von Wallis chairs the firm’s German Tax Group. For more than 25 years, Georg has been advising clients on all tax aspects of finance and corporate transactions, in particular in cross-border situations in the media as well as the real estate sectors. Georg has wide-ranging experience handling tax litigation, VAT and other indirect taxes. He represents national and international financial institutions, major media and entertainment companies, private equity and venture capital fund...

Fabian Winters is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law and Public Private Partnership. Fabian, who practices law in Berlin, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fabian is held by other top lawyers in the same geographic and legal practice area.

Henning Sieber focuses his practice on real estate and corporate law. He regularly advises on real estate acquisitions and sales, including the structuring and financing of real estate transactions, and has broad experience in advising in particular institutional clients on transactions in Germany and abroad. Henning is also experienced in the restructuring of real estate investments, including advising on restructuring and refinancing of distressed investments as well as on real estate inves...

Christiane Huismans, born in 1966 in Telgte (Westphalia), studied law in Münster following her banking apprenticeship in Bremen and has been working as a lawyer since 1996. Since 2017, she has been offering support in conflict situations as a mediator. Christiane Huismans is a partner at ZENK.* Due to her many years of experience as a lawyer in insolvency administrator law firms, on the side of intensive support of the credit industry as well as in large international law firms, Christia...

Martin Nentwig is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Martin, who practices law in Berlin, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Martin is held by other top lawyers in the same geographic and legal practice area.

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