Volker Hees

Olaf Konzak is a partner in the Cologne office of Friedrich Graf von Westphalen & Partner and heads the public law practice. In September 2018, Olaf Konzak and a team of four lawyers from LLR Legerlotz Laschet und Partner moved to the FGvW office in Cologne. Since September 1, 2018, he has been a partner in the practice in public law. His practice focuses on environmental and waste law, chemicals and substances law and public building law. Olaf Konzak has been working as a lawyer since 19...

Simon Groneberg is a lawyer recognized by Best Lawyers in the practice area of Energy Law. Simon practices law in Düsseldorf, Germany Best Lawyers has recognized Simon Groneberg 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 Simon Groneberg is held by other lawyers.

Martin Wirtz works in all fields of intellectual property matters, with a particular emphasis on trade mark, competition, and copyright law, including litigation. A further focus of his work is patent infringement proceedings. His clients include large and medium-sized firms as well as international companies and associations from a wide variety of different areas. Martin Wirtz studied law at the University of Passau, the University of Freiburg, the University of Cologne, and at Queens' Colle...

Born in 1969 Studied law at Ruhr University in Bochum First Exam ("1. Staatsexamen") in 1996 Research associate at Heinrich Heine University Düsseldorf, 1996 - 1999 Doctor of Laws (Dr. jur.) in 1999 Legal clerkship ("Refrendariat") at the Duisburg District Court, 1999 - 2001 Second (Bar) Exam ("2. Staatsexamen") and admission to the bar in 2001 Attorney with cross-regional business law firm in Münster from 2002 to 2008 Certified Specialized Attorney in Labor and Employment Law since...

Thomas A. Beisken is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Thomas A. practices law in Düsseldorf, Germany Best Lawyers has recognized Thomas A. Beisken since 2021. 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 Thomas A. Beisken is held by other lawyers.

Marc Oberhardt is a lawyer recognized by Best Lawyers in the practice area of Restructuring and Insolvency Law. Marc practices law in Düsseldorf, Germany Best Lawyers has recognized Marc Oberhardt since 2021. 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 Marc Oberhardt is held by other lawyers.

Jörn Zons is a lawyer and partner at Friedrich Graf von Westphalen & Partner in Cologne. Jörn’s main focus lies on German and international construction and engineering projects as well as domestic and international dispute resolution in litigation, arbitration and alternative dispute resolution proceedings. He is also a regular referee on German and international construction and engineering projects and dispute resolution at seminars, associations and in-house for compan...

Dr. Manuel Knebelsberger is Counsel at Hausfeld in Düsseldorf, specializing in competition law and competition litigation. Before joining Hausfeld, Manuel worked in the competition department of one of the biggest international law firms where he acquired a broad experience in all aspects of competition law, ranging from classic antitrust and merger control to procurement and state aid matters. In addition to advising clients on general competition law, Manuel regularly represents client...

Dr Michael Körner has been working as a lawyer in our Cologne office since 2018 and was appointed partner on January 1, 2026. He primarily advises clients in the areas of environmental law, public procurement law, public commercial law, surveying and cadastral law, and the law governing publicly appointed surveyors, in particular partnership law. He also advises on liability law, state liability and compensation law, and litigation. He speaks German and English.

Mike Weitzel is a lawyer and partner at FGvW in Cologne. He is a specialist lawyer for insurance law and specialises, among other things, in product liability and product advice (especially for liability lines), insurance contract law as well as litigation and arbitration. He is a lecturer in insurance law at Hagen Law School, a member of the insurance law working group of the DAV and the author of numerous publications and specialist lectures. He speaks German and English.