MUNICH

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

mail@bdpe.de

DÜSSELDORF

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

mail@bdpe.de

Franck Régis Klein

Partner | Patent attorney | Munich

Patent Ligitation

„Friedrich Emmerling can provide actual strategic advice due to his excellent technical understanding and wealth of experience. In my opinion, having an eye for the “bigger picture” while simultaneously knowing the details is what sets him apart from many others.“

– The Legal 500 Deutschland 2025

„Franck Klein deeply understands all the relevant technical details of the related technologies and, based on this, selects the best arguments and provides us with great results.“

– Chambers Global Guide 2025

„Friedrich Emmerling is always willing to go one step further. Franck Klein has a high level of technical expertise.“

– The Legal 500 Deutschland 2025

„Friedrich Emmerling's technical knowledge is exceptional. He is a very good patent attorney.“

– Chambers Global Guide 2025

„Karl-Ulrich Braun-Dullaeus can also explain very complex technological contexts in a generally understandable way. In my experience, he was often able to develop decisive arguments, especially when working together in large joint defense groups.“

– The Legal 500 Deutschland 2025

„Franck Klein has excellent analytical skills.“

– Chambers Global Guide 2025

„Friedrich Emmerling - very experienced, strategically very adept.“

– The Legal 500 Deutschland 2025

„Friedrich Emmerling is a goal-oriented lawyer who will not give up fighting for additional arguments if he sees any chance of obtaining better results for his clients.“

– Chambers Global Guide 2025

„Franck Klein: strategically and professionally convincing; efficient way of working and convincing communication.“

– The Legal 500 Deutschland 2025

„Franck Klein is a very high-quality lawyer whose technical proficiency is exceptional.“

– Chambers Global Guide 2025

„Friedrich Emmerling is a very experienced lawyer and a strong strategic thinker who knows judges and opponents inside out.“

– Chambers Global Guide 2025

„Franck Klein is always very much available.“

– Chambers Global Guide 2025

„Friedrich Emmerling is an excellent strategist who has a wealth of experience and performs convincingly.“

– Chambers Global Guide 2025

„Friedrich Emmerling's team is characterized in particular by its considerable experience in contentious patent proceedings. All members of the team are very sociable, making it easy to work with them. Work products are delivered quickly, punctually and are always very well-founded and meaningful.“

– The Legal 500 Deutschland 2025

„Highly committed team with an efficient and structured way of working, very good specialist knowledge and excellent availability.“

– The Legal 500 Deutschland 2025

„High level of willingness to get to grips with and understand all the details of the technology. Very short response time.“

– The Legal 500 Deutschland 2025

„Franck Klein also offers up his expertise on this mandate and earns praise from another satisfied patron for being “extremely skilled, open minded and collaborative. He takes the time to discuss matters in person, which speeds up the process and brings in better results thanks to the exchange of information and brainstorming that happens during such conversations. Franck is also proficient in all three official languages of the EPO, so he grasps the nuances of language used in patent applications and can propose new arguments in opposition proceedings on this basis.“

– IAM Patent 1000 Guide 2024

„Friedrich Emmerling is a high-quality lawyer whose technical proficiency is exceptional.“

– Chambers Global Guide 2025

„Michael Behmke is very responsive and shows attention to detail.“

– IP STARS 2024

„Franck Klein also offers up his expertise on this mandate and earns praise from another satisfied patron for being “extremely skilled, open minded and collaborative. He takes the time to discuss matters in person, which speeds up the process and brings in better results thanks to the exchange of information and brainstorming that happens during such conversations. Franck is also proficient in all three official languages of the EPO, so he grasps the nuances of language used in patent applications and can propose new arguments in opposition proceedings on this basis.“

– IAM Patent 1000 Guide 2024

„Further strengthening the set, Markus Kreuzberg thrives when working with domestic companies seeking protection across the globe. He adroitly oversees the drafting and filing of international patent applications for companies including Conradi+Kaiser, a family-owned business that has established itself as a leader in rubber moulded parts.“

IAM Patent 1000 Guide 2024

„They have vast experience in litigating telecom patents. The team is very approachable and easy to work with. The responsiveness is great, and the knowledge of EPO as well as FPC case law is unbeatable.“

- IP STARS 2024

„I would choose BDPE for their excellent technical expertise in the area of telecommunication as well as for their professionalism. Their managing partner, Friedrich Emmerling, would approach a problem from all possible directions and find a solution for the client.“

- IP STARS 2024

„Excellent collaboration during patent litigation, with knowledge about technological aspects of the case.“

- IP STARS 2024

„Karl-Ulrich Braun-Dullaeus is very experienced, accessible, and good-humoured. He is open for legal tech.“

- IP STARS 2024

„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
franck.klein@bdpe.de

Qualifications

  • 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

    Telecommunications

    Software

    Audio-video encoding

    Electrical and information technology

    Awards