Our Roots and History

Starting in 1980 Hermann Kahlhöfer began his career as a patent attorney in a patent department at Siemens AG. 1985 he qualified himself and was admitted a European Patent Attorney and five years later a patent assessor in Germany. At Siemens AG he got to know the mindsets, working methods and specific needs of small and large scale industrial companies so that in 1992, when he moved to Bardehle Pagenberg, a patent attorney and lawyer firm, his knowledge and expertise where a great profit to the firm.

Ditmar Neumann was trained at a firm of patent attorneys with a long tradition, where, after being admitted as a patent attorney in 1991, he primarily advised and looked after SMEs in relation to the acquisition and enforcement of IP rights. Later, he qualified himself and was admitted as a European Patent Attorney. In 1994 he likewise moved to Bardehle Pagenberg, which profited greatly from his extensive knowledge and experience in both the technical and legal spheres.


The founding

After working together for a number of years, in 2000 Hermann Kahlhöfer and Ditmar Neumann grasped the initiative and founded KNH Patentanwälte in Duesseldorf. Since the beginning of 2001, they have deployed their combined experience, their extensive specialist knowledge and their commitment for the benefit of our national and international clients.

Hermann Kahlhöfer left the partnership in 2013 and since then has assisted KNH Patentanwälte as a Senior IP Counsel. Ditmar Neumann is still a partner in the firm today. He acts on behalf of our clients primarily in opposition and opposition appeal proceedings before the German Patent and Trademark Office and the European Patent Office. Additionally, his Master of Laws (LL.M.) degree also entitles him to represent our clients before the European patent infringement court (Unified Patent Court, UPC), which is due to come into being.

Success story

Matthias Rößler began his training as a patent attorney in 1999. In 2003 he was admitted as a patent attorney and a European Patent Attorney and became a partner in our firm. In recent years he has focused on strengthening and extending our effective and forward-looking collaboration with colleagues in Asia. Since 2007, he lectures on the protection of intellectual property rights at RWTH Aachen University. Further focal points of Matthias Rößler’s work lie in managing large patent portfolios and undertaking inter partes proceedings on legal validity before patent offices and patent courts. With his additional qualification as a Master of Laws (LL.M.) he is particularly well qualified to work on multinational infringement cases in Europe.

Dr. Christian Heine trained as a patent attorney at KNH Patentanwälte starting in 2001. In 2008, he likewise became a partner in the firm, after being admitted as a patent attorney in 2004 and a European Patent Attorney in 2006. Today, he has particular responsibility for advising companies on the German law of employee inventions and the licensing of property rights.

Justus Kreuels became a partner in the firm in 2014. He also trained at KNH Patentanwälte (starting in 2008). He was admitted as a patent attorney in 2011 and as a European Patent Attorney in 2012. Justus Kreuels’ work is focused on a large number of new tailored strategies for the management of industrial property rights which are intended to create benefits for our clients well into the future. In addition, Justus Kreuels carries out a great deal of work on the enforcement of property rights in Germany.

Since 2016 Tilman Taruttis is part of the partnership of KNH Patentanwälte. He has already cooperated with KNH since 2013. Tilman Taruttis is a well-known expert for patent law in the technical field of electronics. In particular, he is active in large infringement disputes in the technical field of mobile communication.

The team of KNH Patentanwälte has grown to ten patent attorneys, working for us at our offices in Duesseldorf, Stuttgart and Munich. KNH Patentanwälte became a renowned German patent attorney firm.

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