Marcus Dittmann

Lawyer and Mediator Partner

Reinald Günther is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Reinald, who practices law in Berlin, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Reinald is held by other top lawyers in the same geographic and legal practice area.

Martin Seyfarth chairs the German Public Policy Practice and co-chairs the German Energy Industry Group. He advises national and international companies on transactions, privatizations and large strategic industry and branch projects. With his extensive experience and knowledge, Mr. Seyfarth has successfully represented clients in a variety of complex deals in the corporate sector. Mr. Seyfarth has been the managing partner of the Berlin office since 2009.

Lawyer Partner

Oliver Markmann is as a Shareholder within the German Private Equity/M&A team, where he focuses on representing a diverse range of private equity and growth equity clients in various private M&A transactions. His work spans buyouts, minority investments, co-investments, equity rollovers, and joint venture structuring, primarily concentrating on the technology, business services, and healthcare & life sciences sectors. Besides his professional commitments, Oliver values the opportu...

Thilo Ullrich is a Shareholder in the Labor & Employment Practice in Germany and co-chairs the fully integrated special unit “GT Labor Lab” together with Dorothee v. Einem. He advises national and international companies in all areas of individual and collective employment law. His practice focuses on advising and supporting restructurings, operational changes and post-merger integration, including communication and negotiation with works councils and unions. Furthermore, Thil...

Prof Dr Thomas Höppner is a partner with Geradin Partners. Before joining Geradin Partners in 2025, Thomas was a partner at Hausfeld for ten years. With over 20 years of experience, Thomas has advised clients on a broad range of contentious and non-contentious antitrust and regulatory matters. He has assisted clients on numerous high-stake investigations, including some of the most complex cases in the tech, media and network industries. Thomas is also a trusted litigator on matters of E...

Carsten Kociok is a partner in the Technology, Financial Services and Data Privacy Practice in Berlin and Co-Head of Greenberg Traurig’s global Fintech Group. He advises national and international clients across all industries, including financial services, information technology, artificial intelligence, ecommerce, media, health care, telecoms, retail and real estate, on a wide variety of complex commercial and regulatory matters. Carsten is a leading technology lawyer, ranked consiste...

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

Tanja Galander is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Tanja, who practices law in Berlin, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tanja is held by other top lawyers in the same geographic and legal practice area.