Johannes Altstadt

Lutz Martin Keppeler is a top attorney recognized by Best Lawyers in the practice area(s) of Data Security and Privacy Law and Information Technology Law. Lutz Martin, 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 Lutz Martin is held by other top lawyers in the same geographic and legal practice area.

Paul Lange is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Paul, who practices law in Düsseldorf, Germany, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul is held by other top lawyers in the same geographic and legal practice area.

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

Sabine Dethof is a patent litigator and Salaried Partner at HEUKING, Düsseldorf. As a Certified Specialist Lawyer in Intellectual Property Law with 14 years of professional practice, she has a wide range of experience, in particular in the field of mechanical engineering and in the areas of automotive, semiconductors and medical devices. Besides the daily business of patent infringement proceedings she is especially experienced in nullity proceedings before the Federal Patent Court. For ...

I was born in 1976 and studied law in Bonn (Germany) and Strasbourg (France). After my legal traineeship at the Bonn Regional Court and the 2nd state law examination, I was admitted to the bar in 2005. In 2011, the board of the Cologne Bar Association allowed me to use the title “Specialist Lawyer for Tax Law”. In 2016, I successfully took part in the “Certified Executor of Wills (AGT)” course, which was carried out in cooperation with the Working Group for Wills Execu...

Dr Karl Friedrich Dumoulin primarily advises companies on issues of national and international commercial law in their day-to-day business (supply and service agreements, cooperation and distribution agreements, questions relating to competition law and IP law, in particular trademark applications, licence agreements). Dr Dumoulin also represents his clients before courts, offices and courts of arbitration in these areas. In particular, Dr Dumoulin specialises in the field of financial servic...

Justus Kreuels´ practice involves patent prosecution in the fields of mechanical engineering, automotive engineering, information technology and medical engineering and patent opposition as well as invalidity proceedings before the European Patent Office, the German Patent and Trademark Office, and the Federal Patent Court. He studied mechanical engineering at the Technical University of Munich (TUM) and at RWTH Aachen University where he graduated as Master in Engineering in 2007. In 2...

Born in 1959 Trained and worked as police officer in North Rhine-Westphalia, 1979 - 1983 Legal studies and clerkship at Bielefeld University State bar exam and bar admission in 1989 Worked in the legal department of Dr. Oetker Nahrungsmittel KG, Bielefeld, 1990 - 1991 With the firm since 1992 Certified Specialized Attorney in Administrative Law since 1993 Doctor of Laws (Dr. jur.) 1994 under Prof. Dr. Hans-Jürgen Papier Visiting lecturer at the University of Rostock since 2002 Honorary P...

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

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...