Herbert Hertzfeld

Hermann Kahlhöfer advises clients in patent law, in particular in the fields of electrical engineering, medical technology and physics. He has been working in the field of intellectual property for more than 40 years and has extensive experience in the field of national and international patent prosecution procedures and patent infringement matters as well as in the development and exploitation of intellectual property portfolios. After completing two years of military service with a spe...

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...

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

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

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

Born in 1968 Legal studies at Bielefeld University First Exam ("1. Staatsexamen") in 1995 Legal clerkship ("Referendariat") at the Detmold District Court Second (Bar) Exam ("2. Staatsexamen") in 1997 Bar admission in 1998 Doctor of Laws (Dr. jur.) 2001 With the firm since 2001 Certified Specialized Attorney in Labor and Employment Law since 2003

Dr. Kai Rüting is attorney since 2005 and partner of the firm since 2015. He advises clients in patent infringement litigation, technology-related arbitrations, and licensing matters. He specializes in national and cross-border patent litigation. Kai has comprehensive litigation experience, in particular in the areas of standard-related patents, electronics, medical technology, chemistry and life sciences. He also has broad experience advising international clients on strategies relating...

Dr Martin Stockhausen has concentrated on banking law, corporate law and insolvency law since beginning his career as a lawyer. After founding Sozietät GÖRG, Dr Stockhausen focused on advising and representing (primarily institutional) creditors and debtor companies in situations of crises, while at the same time building up a separate department in the firm for advising credit institutions. Assisting debtor companies has included taking on managerial or executive functions (e.g. in...

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

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