BDPE Patent Attorneys and Attorneys at Law

Ottostraße 4
D-80333 München

Fon +49 (0)89 – 21 53 819-0
Fax +49 (0)89 – 21 53 819-19


BDPE Patent Attorneys and Attorneys at Law

Platz der Ideen 2
D-40476 Düsseldorf

Fon +49 (0)211 – 30 27 66-0
Fax +49 (0)211 – 30 27 66-10

Franck Régis Klein

Partner | Patent attorney | Munich

Patent Ligitation

„We selected them because of their outstanding performance in nullity actions and defence work in infringement actions.“

- IP STARS 2023

„The firm understands the business of the client and is clear and transparent in its communication. Excellent forensic work.“

- IP STARS 2023

„In the fields of physics, electrical engineering and electronics, and mechanical patent litigation, the firm sets new standards for Germany.“

- The Legal 500 – Germany

„For contentious proceedings, in particular for nullity proceedings or infringement proceedings accompanied by patent attorneys, Maikowski & Ninnemann, BRAUN-DULLAEUS PANNEN EMMERLING, df-mp as well as the already mentioned Bardehle Pagenberg and Cohausz & Florack are among the top addresses; Zimmermann & Partner Patentanwälte mbB and Maiwald Intellectual Property also enjoy an excellent reputation in the market.“

- The Legal 500 – Germany

„Four partners and several staff work proactively to provide a complete service ranging from providing non-infringement or infringement arguments, successfully fighting for or against the validity of patents, knowing about and finding necessary evidence, suggesting workarounds to problems, and usually winning cases or suggesting useful solutions.“

- The Legal 500 – Germany

„Service-oriented patent attorneys who go above and beyond for their clients. The attorneys exhibit the knowledge level of top technical specialists and, through this, light can be shed on weak arguments of the opposite party.“

- IAM Patent 1000 Guide 2022

„The patent attorneys are all highly experienced and drive their work while being practical and efficient.“

- Chambers 2021

„The team is detail oriented, sensible and shows great judgement.“

- IAM Patent 1000 Guide 2021

Franck Klein | Partner | Patentanwalt | BDPE München

Franck Régis Klein is a patent attorney and has been working in the IP industry for almost 20 years, working and assisting his clients exclusively in patent litigation for more than seven years in matters related to patent litigation, both on the defense and the attacker side. His litigation practice includes representing industrial companies on standard essential and implementation patents against competitors and patent exploitation companies. In addition to his technical expertise, Franck is highly experienced in coordinating and advancing proceedings in the interest of his clients and successfully co-operating with other representatives, attorneys or patent attorneys from different jurisdictions. Franck also has experience in research and development in the telecommunications industry.

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His technical expertise extends in particular to the fields of telecommunications/computer networks, video/audio coding, electronic hardware and software.

The patent disputes in which he is involved often require detailed tests and measurements related to the allegation of patent infringement, for which he has also acquired a deep understanding due to his former work in research and development for a leading mobile phone manufacturer. On the basis of such tests and measurements, he consistently prepares technically challenging contexts for the courts.

His patent litigation practice includes, advising and representing industrial companies on standard essential and implementation patents. Of particular significance are proceedings for mobile phone manufacturers against various patent exploitation companies as well as against competitors, be they mobile phone or chip manufacturers.

In addition to a graduate degree in data and communications engineering, he has also completed general engineering studies in electrical and mechanical engineering, on the basis of which he is able to cover other fields such as the manufacture of sporting goods. Franck holds a Master’s Degree in telecommunications engineering (Technical University of Darmstadt, Germany) and a Master’s degree in mechanical and electrical engineering (École Centrale de Lyon, France).

Since Franck is fluent in all three official languages of the European Patent Office, he can also take into account subtleties of the description in the original language – regardless of the procedural language of the respective IP right.

Fon +49 (0)89 – 21 53 819-22


  • German patent attorney
  • European Patent Attorney
  • European Trademark and Design Attorney
  • Study of data and communications engineering (TU Darmstadt) as well as engineering studies in the fields of electrical and mechanical engineering (École Centrale Lyon)

Authorized to represent

  • Germany:
    • Federal Court of Justice (only patent nullity proceedings)
    • Federal Patent Court (BPATG)
    • German Patent and Trade Mark Office (DPMA)
  • Europe:
    • Unified Patent Court (UPC)
    • European Patent Office (EPO)
    • European Union Intellectual Property Office (EUIPO)

    Technical fields



    Audio-video encoding

    Electrical and information technology