Partner, Patent Attorney Munich
Profile of Hanns-Juergen Grosse

The best part of my job is being able to have a real impact on our clients’ futures. Being a German patent attorney, I especially enjoy working in D Young & Co’s international and diverse atmosphere.

I’ve been a partner at D Young & Co since 2017. Before I joined, I worked in-house for the Infineon Technologies Intellectual Property Department and in private practice. My main areas of expertise are in automotive engineering, computer-implemented inventions, medical technology, microprocessor engineering, semiconductors and telecommunications. I have significant experience in handling complex legal issues regarding existing patent portfolios, including re-establishment of rights in various jurisdictions.

Most of my work is for large and medium-sized corporate clients from the UK, US and mainland Europe, particularly in the area of preparation and prosecution of patent applications. As a German patent attorney, I advise on German intellectual property rights. Embracing technology, I have been a ham radio operator ever since my early days, when I became one of the youngest licenced amateur radio operators in Germany.


  • BEng (Hons) in Electronic Engineering, University of Central Lancashire 1992.
  • Qualified Engineer in Telecommunications and Microprocessor Engineering, University of Applied Sciences 1993.
  • PhD in Electronic Engineering, University of Central Lancashire 1997.
  • Chartered Engineer (CEng) 2001.
  • European Engineer (Eur Ing) 2002.
  • European Patent Attorney 2005.
  • Law for German Patent Attorneys, FernUniversitaet 2008.
  • German Patent Attorney 2009.
  • European Trade Mark and Design Attorney 2009.
  • Diploma in Patent Litigation in Europe, Université de Strasbourg 2013.
  • Introduction to English Law, London School of Economics and Political Science (LSE) 2014.
  • Chartered Patent Attorney 2015.
  • Basic Litigation Skills Certificate, CPD Training (UK) Ltd 2016.
  • Registered representative before the Unified Patent Court (UPC) 2023.


  • Chartered Institute of Patent Attorneys (CIPA).
  • European Patent Institute (epi).
  • German Patent Attorneys Association.
  • International Association for the Protection of Intellectual Property (AIPPI).
  • Engineering Council (EC UK).
  • European Patent Litigators Association (EPLIT).
  • European Federation of National Engineering Associations (FEANI).
  • International Federation of Industrial Property Attorneys (FICPI).
  • German Association for the Protection of Intellectual Property (GRUR).
  • The Institute of Electrical and Electronics Engineers, Incorporated (IEEE).
  • Institution of Engineering and Technology (IET).
  • Association of Intellectual Property Experts (VPP).
Hervorragend in jeder Hinsicht.
Legal 500
Hanns brings valuable in-house experience to the table, thanks to a spell at Infineon Technologies; he produces straightforward, crystal-clear reports that can easily be reviewed in a boardroom.
World Trademark Review 1000
Die Leute sind wirklich beeindruckend und haben eine gute Einstellung zur Mandantenbetreuung.
Rechtsbeistand und -beratung von hoher Qualität zu vernünftigen Preisen.
IP Stars (Managing IP)