Christoph Binge

Olga Braeuer is a counsel in the Litigation/Controversy Department, and a member of the International Arbitration Practice Group. She joined the firm in 2010 and focuses on international arbitration and dispute resolution. Ms. Braeuer focuses on international arbitration and dispute resolution. She has represented clients in complex multi-jurisdictional disputes governed by a broad variety of substantive and procedural laws, of both civil and common law jurisdictions. She has acted as counsel...

Ulrike Grübler focuses on Intellectual Property with an emphasis on Trademark Law, Design Law and Copyright Law was well as Unfair Competition Law. She is an experienced IP litigator and has particular expertise in the development and enforcement of national and international brand strategies as well as the handling of brand portfolios. Ulrike advises brand owners on the full lifecycle of their Intellectual Property rights. This includes strategic advice, availability searches as well as...

Jörg Michael Siecke is a lawyer and partner at the Berlin office of Friedrich Graf von Westphalen & Partner. He advises on real estate transactions with a focus on commercial real estate, in particular retail and light industrial. He further assists with sale and purchase agreements and legal due diligence cases as well as other aspects of real estate law (commercial tenancy law, neighbor law, broker law). He speaks German and English.

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...

Born in Duisburg in 1974, Dr. Kostja von Keitz studied law in Düsseldorf. He received his doctorate in European nature conservation and national administrative procedural law in 2005, with a thesis on the subject of “The Legal Protection of Private Individuals against Special Areas of Conservation”. He began his career as a lawyer in 2005, working initially for a major international law firm. He became a specialist in administrative law 2008 and joined ZENK in 2009. He has be...

Born in Brühl in 1965, Dr. Rolf Zeißig studied law in Bonn, Hamburg and Berlin. He was a research assistant at the Department of Labor and Social Law at the University of Potsdam and obtained a doctorate in labor law on the subject of “The Conservation of the Status Quo of Works Council Agreements in the Event of Termination”. Dr. Zeißig has worked as a lawyer since 1996 and as a specialist in labor law since 1999. He has been with ZENK since 2002. Dr. Zeißi...

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...

Dr Matthias Durst is a partner and co-head of real estate at POELLATH in Berlin. For many years, he has advised on real estate transactions, real estate private equity and real estate project developments of all kinds, as well as on the conclusion of rental and lease agreements. He also advises on contract law and has accompanied various major portfolio transactions and individual transactions as the leading partner. In addition, he has broad experience in the fields of real estate financing,...

Born in Munich in 1965, Dr. Markus Kelber studied law and worked as a research assistant at the University of Regensburg in 1987 after completing his apprenticeship as a carpenter. Dr. Kelber has been active as a lawyer in Berlin since 1996, working first for an employers’ association and then for the medium-sized local law firm Danckert Böx Meier. In 1998, he obtained his doctorate in constitutional law with Prof. Dr. Udo Steiner in Regensburg, with a thesis on the subject of &ldq...

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