Born in 1966 in Weiden. Studied materials engineering at the Friedrich-Alexander University in Erlangen, graduating with honors in 1993. From 1993 until 1998 wiss. Assistant at the German Society for Chemical Engineering, Apparatus Engineering, Biotechnology and Environmental Protection (DECHEMA) in Frankfurt/Main from 1993 to 1998; doctorate at the Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen in 1997; awarded the Borchers Plaque of the RWTH Aachen in 1998. 

Since 1998 active in the entire field of patent, utility model, design and trademark law. Representation of clients before the German, Swiss and European Patent Offices, the European Union Intellectual Property Office EUIPO for the Internal Market (trademarks, designs), the Federal Patent Court and the Federal Supreme Court (nullity actions). The range of work includes obtaining, defending and administering intellectual property rights as well as their exploitation (licenses) and judicial and extrajudicial enforcement. 

The legal knowledge and experience is combined with an interdisciplinary, broad-based technical education in the interplay of mechanical engineering, physics and chemistry, utilizing special knowledge in the fields of materials science, chemical engineering, automotive, aviation, high-temperature and coating technology. 

Author and co-author of extensive scientific publications and member of numerous national and international associations and organizations in the field of technology and intellectual property (V DI, VPP, GRUR, LES, AIPPI, AIPLA, FICPI). 

Foreign languages: English and French. 

Wolfgang Zippelius works in the fields of German, European and international trade mark and design law as well as competition and copyright law. He is responsible for the development of filing strategies for IP rights and the management of trade mark and design portfolios. Wolfgang Zippelius also specialises in product piracy and border seizure proceedings as well as the drafting of licence agreements.

Stefanie Hackel studied chemical engineering at the Friedrich-Alexander University of Erlangen-Nuremberg and graduated with a Diploma in process engineering with honours.

Following her studies, she gained practical industrial experience as a process engineer at Du Pont de Nemours (Deutschland) GmbH. In 1999, she started her career in the field of intellectual property at a patent and law firm in Munich.

Before joining the team at LangPatent IP Law Firm in April 2025, she spent many years advising corporate clients in the patent department of a global security tech company.

Her areas of expertise include drafting and prosecution, defence and enforcement of inventions in engineering, physics and chemistry, particularly in the fields of micro and nano optics, printing, foil production, coating technology and paper technology.

Foreign languages: English

Born in Munich in 1986. Studied chemistry at the Technical University of Munich, specializing in physical chemistry and inorganic chemistry. Bachelor's degree (B.Sc.) in 2008 and Master's degree (M.Sc.) in 2010. From 2010 to 2014 freelance work in the field of development of phosphor converters for light-emitting diodes for the research and development department of a German technology group. 2015 PhD at the University of Bayreuth. 

Since March 2014 patent engineer at the LangPatent law firm IP Law Firm, working in particular in the field of utility model and patent matters.