karo IP Patentanwälte

Hermann Kahlhöfer, Matthias Rößler and Justus Kreuels: The founding partners of karo IP have been working together for more than 15 years. The patent law firm advices its clients in all areas of technology and sciences on IP-relevant legal issues.

Patents, trademarks, designs: The aim is to develop and implement ground-breaking new ideas for providing clients with efficient, in-depth and proactive advice. The combined experience, extensive expertise and dedication of its patent attorneys make this possible.

The karo IP team combines practical knowledge and skill in the field of patent law, particularly as it applies to the technologies as automotive, engineering, software/IT, physics, medical technology and biotechnology, with extensive experience in patent infringement matters.

karo IP is especially well qualified to partner with clients in the development of patent strategies and portfolios — even for such futuristic technologies as e-mobility, autonomous driving, internet of things (IoT), artificial intelligence (AI), or the blockchain — and to represent them in IP-related disputes in these areas.

karo IP as well as the partners of the firm have been listed and recognized as leading experts in patent law in national and international handbooks.

About us

Team members of karo IP Patentanwälte since the beginning are the patent attorneys Sven Jessen and Michael Schirmuly, who - together with the founding partners of karo IP - worked for KNH Patentanwälte until 2017.

The founding team:

Matthias Rößler, German and European Patent Attorney since 2003, studied mechanical engineering at the RWTH Aachen. As partner of the patent law firm KNH Patentanwälte he has primarily strengthened and expanded cooperation with colleagues in Asia. A main focus of his practice is the management of large patent portfolios and the enforcement of bilateral litigation proceedings before patent offices and patent courts. His additional qualification as Master of Laws (LL.M.) qualifies him especially for multinational infringement matters in Europe. Since 2007 he has held a teaching position for Intellectual Property Law at the RWTH Aachen University.

Justus Kreuels, German and European Patent Attorney since 2011/2012, studied mechanical engineering at the TU Munich and the RWTH Aachen. In 2014 he became a partner of the patent law firm KNH Patentanwälte. He works in particular on a large number of newly adapted strategies for the treatment of intellectual property rights, which should give the clients an advantage well into the future. A main focus of his practice is the enforcement of intellectual property rights in the field of mobile communication, Internet of Things (IoT), robotics, etc. in Germany.

Hermann Kahlhöfer studied astronomy and physics at the Bonn University. In 1985 he qualified as a European Patent Attorney and in 1990 he acquired the license to work as a patent assessor. After 12 years of professional activity at Siemens AG, he joined an internationally operating law firm in 1992. After 8 years in a leading position in this patent and law firm, he and two other patent attorneys founded KNH Patentanwälte, where he worked for the following 17 years.

Braun-Dullaeus Pannen Emmerling Patent Attorneys & Attorneys at Law

Braun-Dullaeus Pannen Emmerling Patent Attorneys and Attorneys at Law is a well-known patent and law firm (Düsseldorf, Munich) with a comprehensive portfolio of experience and expertise. Find out more at