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

Markus Kreuzberg

Partner | Patent attorney | Munich

Patent Ligitation

„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

„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

Markus Kreuzberg | Partner | Patentanwalt | BDPE München

Markus Kreuzberg is a patent attorney and has been an equity partner at Braun-Dullaeus Pannen Emmerling (BDPE) in Düsseldorf since 2019. He has worked in intellectual property since 2005, representing clients before the German Patent and Trademark Office (DPMA), the German Federal Patent Court (BPatG), the European Patent Office (EPO), the European Union Intellectual Property Office (EUIPO) and the World Intellectual Property Organization (WIPO).

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He has extensive experience in the implementation of patent and utility model law and a sound knowledge of international legal practice in intellectual property law, not least due to the support he has provided to clients who are also active outside Europe. Further areas of expertise are employee invention law, trademark law and design protection.

Before founding the new firm, he was a partner and, from 2014 until now, an equity partner at Braun-Dullaeus Pannen. Markus completed his training at the patent and law firm BPSH in Düsseldorf and worked there as a patent attorney until 2010. During his training as a patent attorney, he worked at the Patent Litigation Chamber of the District Court of Düsseldorf, the German Patent and Trademark Office and the Federal Patent Court.

Prior to his training as a patent attorney, Markus worked as an engineer in the metal processing industry for several years, where he was responsible for the development and implementation of new production processes. In addition, he gained experience as an environmental engineer in the implementation of complex legal requirements in practice.

He studied process engineering at the Technical University of Clausthal and technical environmental protection at the Technical University of Berlin.

Fon +49 (0)211 – 302766-0


  • German Patent Attorney
  • European Patent Attorney
  • European Trademark and Design Attorney
  • Clausthal University of Technology
  • Technical University of Berlin

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)
  • International:
    • World Intellectual Property Organization (WIPO)

Technical fields


Audio-video encoding

Electrical and information technology

Optics and medical technology

Power Engineering

Plastic and metal processing

Power Engineering

Plastic and metal processing