Christian Graf Brockdorff

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...

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...

Wolf Friedrich Spieth is a lawyer recognized by Best Lawyers in the practice areas of Energy Law, Environmental Law and Public Law. Wolf Friedrich practices law in Berlin, Germany Best Lawyers has recognized Wolf Friedrich Spieth since 2009. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Wolf Friedrich Spieth is held by other lawyers.

Adrian Löser is a lawyer recognized by Best Lawyers in the practice area of Labor and Employment Law. Adrian practices law in Berlin, Germany Best Lawyers has recognized Adrian Löser since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Adrian Löser is held by other lawyers.

Dr Dominik Greinacher is Partner at BEITEN BURKHARDT's Berlin office and a member of the Corporate / M&A practice group. His area of activity comprises advice on energy law and the energy industry. He particularly advises his clients on public energy law issues, including planning law and the law of expropriation, as well as on emission trading matters. He further advises and represents his clients on energy-related state aid law before the EU institutions. Dr Greinacher also provides leg...

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...

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...

Ünsal Demir is a lawyer recognized by Best Lawyers in the practice area of Corporate Law. Ünsal practices law in Berlin, Germany Best Lawyers has recognized Ünsal Demir since 2019. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Ünsal Demir is held by other lawyers.

Stephanie Hotopp is a lawyer recognized by Best Lawyers in the practice area of Restructuring and Insolvency Law. Stephanie practices law in Berlin, Germany Best Lawyers has recognized Stephanie Hotopp since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Stephanie Hotopp is held by other lawyers.

Rainer Pietschmann Lawyer | Managing Partner Studied law at the Universities of Bochum and Bonn and at the University of Washington (Seattle, WA). Clerkship at the Court of Berlin. From 1989 to 1992 director of a German/ Italian trading company. From 1995 to 1997 Attorney (Partner) at Lauenroth & Partner (Berlin). Founded PIETSCHMANN Legal (Berlin) in 1997. Supervisory Board of Schrobsdorff Bau AG (Berlin). Main Areas of expertise Civil Construction Law, Real Estate Law, Public Procuremen...