Dr Stephan Reisner is a patent litigator and advises national and international mid-sized companies and groups on intellectual property law. He focuses on patent law, employee invention law, and competition law (UWG). He represents his clients in and out of court and on the defence of property rights. He is a representative before the Unified Patent Court (UPC). Furthermore, he also supports clients in drafting and negotiating IP-contracts.

Stephan has strong expertise on technology involving mechanics, electronics, information technology, and ‘access to data’ claims. Part of his advice in international technology related disputes focuses on the assessment of manufacturing and distribution of spare parts and daily consumer goods under patent law. Furthermore, he advises on protection of data under copyright and patent law.

You can find the answers to the most frequently asked questions about Patent Litigation in Germany here and about the Unitary Patent and the Unified Patent Court here.

Stephan studied law in Bonn. Afterwards he worked as a research assistant at the Chair of Civil Law, Intellectual Property Law and Unfair Competition Law at the University of Bonn and completed his doctorate in patent law (Exhaustion in Patent Law).

Prior to joining Osborne Clarke in 2018, he completed his legal trainee ship in Bonn, Cologne and Sydney, whereby he worked, inter alia, for a big German television broadcaster and an IP boutique.

As a member of the German Association for the Protection of Intellectual Property (GRUR) and the Association of Intellectual Property Experts (VPP), Stephan is an author of publications in Intellectual Property journals.

Helping you succeed in tomorrow's world

Digital transformation and decarbonisation are essential parts of our common future. With my keen interest in these and other technical areas, I help companies to protect, market and defend their ideas and intellectual property in the long term.

Manufacturer of hydraulic rescue equipment

Defence in court of a manufacturer of rescue equipment against the accusation of patent infringement.

Manufacturer of laboratory supplies and laboratory equipment

Judicial enforcement of patent rights for a manufacturer of laboratory supplies and laboratory equipment.

Smart Steel Technologies

Osborne Clarke advises AI start-up Smart Steel Technologies on the participation by Heraeus, read more

Deutsche Windtechnik

Advised Deutsche Windtechnik in patent dispute against Siemens Gamesa

Producer of Industrial Minerals

Advised producer of industrial minerals in patent dispute on roof coatings

Automotive remanufacturing companies

Advised automotive remanufacturing companies in patent related matters 

Zurich Insurance

Advised Zurich Insurance on product recall and liability cases

Octane Group

Osborne Clarke has advised the Canadian Octane Group on the acquisition of Aesculap AG's stake in Reutlingen-based TETEC Tissue Engineering Technologies AG on an interdisciplinary basis, read more.

DB Schenker

Osborne Clarke advises DB Schenker on its investment in Volocopter, read more 

Contact Stephan