IP worth fighting.
IP worth winning.
„Braun-Dullaeus Pannen Emmerling is an excellent law firm with people who really understand patent litigation and are very easy to work with.“
– Chambers Global Guide 2025
„For me, BDPE stands for quality work that we can always rely on. For me, quality is not only defined by convincing arguments in terms of content, but also by very good service, the firm's good technical equipment and fast response times.“
– The Legal 500 Deutschland 2025
„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
„The lawyers at Braun-Dullaeus Pannen Emmerling demonstrate a very high level of commitment, a wealth of experience and high patent law skills.“
– Chambers Global Guide 2025
„Highly committed team with an efficient and structured way of working, very good specialist knowledge and excellent availability.“
– The Legal 500 Deutschland 2025
„Friedrich Emmerling's technical knowledge is exceptional. He is a very good patent attorney.“
– 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
„Franck Klein is a very high-quality lawyer whose technical proficiency is exceptional.“
– 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
„Friedrich Emmerling is a very experienced lawyer and a strong strategic thinker who knows judges and opponents inside out.“
– Chambers Global Guide 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 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
„The lawyers at Braun-Dullaeus Pannen Emmerling have a deep understanding of our technology and vast experience, which helps them to understand and solve litigation matters.“
– Chambers Global Guide 2025
„Friedrich Emmerling is a high-quality lawyer whose technical proficiency is exceptional.“
– Chambers Global Guide 2025
„We experience real team players at all levels who are pleasant to work with. It is difficult to find such a good team of patent attorneys, particularly in the areas of telecommunications, video and audio coding and semiconductor technology.“
– The Legal 500 Deutschland 2025
„Friedrich Emmerling is an excellent strategist who has a wealth of experience and performs convincingly.“
– Chambers Global Guide 2025
„Franck Klein has excellent analytical skills.“
– Chambers Global Guide 2025
„I like that Braun-Dullaeus Pannen Emmerling are engaged in the service they are providing us with, and that the lawyers there are always very available.“
– Chambers Global Guide 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
„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 - very experienced, strategically very adept.“
– The Legal 500 Deutschland 2025
„Franck Klein: strategically and professionally convincing; efficient way of working and convincing communication.“
– The Legal 500 Deutschland 2025
„The patent attorneys at this German IP litigation boutique enjoy an outstanding reputation for their litigation in complex mobile communications proceedings, including EPO oppositions.“
– JUVE Patent 2024
„Braun-Dullaeus Pannen Emmerling's strength is how deep the lawyers there dig into technical matters.“
– Chambers Global Guide 2025
„Franck Klein is always very much available.“
– Chambers Global Guide 2025
„Boasting a raft of skilled patent attorneys with abundant industry experience, BDPE is “excellently positioned to provide fantastic counsel on a whole host of IP questions, from patent applications, to portfolio management, opposition and nullity proceedings, and infringement support. Their flexible approach and up-to-date understanding of European case law and procedural matters are particularly helpful when working together on cases.“
– IAM Patent 1000 Guide 2024
„The team led by Karl-Ulrich Braun-Dullaeus and Friedrich Emmerling is certainly at the top of the market in this clearly defined specialty, particularly when it comes to SEPs.“
– JUVE Patent 2024
„The collaboration is extremely professional, efficient and effective. The lawyers always initiate the right measures and implement them efficiently and well.“
– Chambers Global Guide 2024
„Karl-Ulrich Braun-Dullaeus is an outstanding patent professional who is highly knowledgeable and deeply experienced in prosecution and litigation, which means his clients profit from his expertise in both areas. Irrespective of how big the client is, Karl takes care of each matter in a very efficient and customer-friendly manner, ensuring that things move forward fast. He is quick to understand the needs of his clientele and advises them in a very down-to-earth, reliable and comprehensive way.“
– IAM Patent 1000 Guide 2024
„Friedrich Emmerling is highly experienced in litigation, oppositions and procedural matters.”
– IAM Patent 1000 Guide 2024
„The law firm provides very good responsiveness and we get the information we want very quickly.“
– Chambers Global Guide 2024
„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
„The team is very strong on the technical side.“
– Chambers Global Guide 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
„Friedrich Emmerling has very good expertise and knowledge. His preparation is very detailed and thorough, and he always goes the extra mile to see what more can be done.“
– Chambers Global Guide 2024
„In the field of patent litigation, the team provides by far the most complete package of services in the areas of physics, technology and software, resulting in a high success rate in both defence and attack in patent infringement and nullity actions. There are few who work at a similar level.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling is really one of the best patent attorneys in Germany. He digs really deeply into the matter and understands what it is about in the end.“
– Chambers Global Guide 2024
„Franck Klein is an experienced, brilliant analyst with a sense for the essentials.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling is lauded by peers for his "thorough and technical" understanding of complex IP matters emerging from the mobile and telecoms industries.“
– WWL 2024
„One of BDPE's outstanding strengths is its responsiveness. Any concerns are dealt with promptly and competently. BDPE is characterised by its extensive experience, particularly in patent infringement proceedings, which makes the team the ideal partner.“
– The Legal 500 – Deutschland 2024
„Two aspects stand out: Expertise in patent infringement proceedings and technical depth, e.g. conducting extensive technical experiments to gain knowledge.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling for me he is the best patent attorney in litigation and nullity actions. His strengths are his professional competence and very profound experience in litigation.“
– Chambers Global Guide 2024
„Proficiency in all three official languages of the EPO with partners who are native French speakers, which is an asset for a German law firm when dealing with patent matters in French.“
– The Legal 500 – Deutschland 2024
„Always willing to take the necessary time to discuss a matter.“
– The Legal 500 – Deutschland 2024
„Karl-Ulrich Braun-Dullaeus can also explain very complex technological relationships in a generally understandable way. In my experience, he has often been able to develop the decisive argument, especially when working together in large Joint Defence Groups.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling: Outstanding wealth of experience; knows judges and case law practice not only of the EPO and the BPatG, but in particular also of the individual infringement courts.“
– The Legal 500 – Deutschland 2024
„For me, BDPE stands for a quality of work products that we can always rely on. For me, quality is not only defined by convincing arguments in terms of content, but also by the excellent service, the good technical equipment of the firm and the fast response times.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling is a good team worker and ensures that the actual technical context of both the patents under consideration and the (alleged) forms of infringement are fully understood by the patent attorney team and the attorney conducting the proceedings. Franck Klein is an experienced, brilliant analyst with an eye for the essentials.“
– The Legal 500 – Deutschland 2024
„At all levels, we experience real team players who are a pleasure to work with. Especially in the fields of telecommunications, video and audio coding and semiconductor technology, it is difficult to find such a good team of patent attorneys.“
– The Legal 500 – Deutschland 2024
„Friedrich Emmerling can provide real strategic advice thanks to his outstanding technical understanding and wealth of experience. In my opinion, his ability to see the "big picture" while at the same time knowing the details sets him apart from many others.“
– The Legal 500 – Deutschland 2024
„The firm understands the business of the client and is clear and transparent in its communication. Excellent forensic work.“
– IP STARS 2023
„We selected them because of their outstanding performance in nullity actions and defence work in infringement actions.“
– 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 2023
„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 2023
„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
„The patent attorneys at this German IP litigation boutique enjoy an outstanding reputation for their litigation in complex mobile communications proceedings, including EPO oppositions. The team led by Karl-Ulrich Braun-Dullaeus and Friedrich Emmerling is certainly at the top of the market in this clearly defined specialty, particularly when it comes to SEPs.“
– JUVE Patent 2024
BDPE – Patent Attorneys and Attorneys at Law
Since its founding, BDPE has been one of the most prominent IP law firms in intellectual property. We consistently combine industry-specific and technical knowledge with legal expertise applied at the highest level.
With a strong focus on contentious proceedings in IP and competition law, we clearly stand out from competitors.
We offer outstanding expertise in complex and multi-jurisdictional litigation, for which we are well known in the market. Not only are we highly specialized, we are trusted business partners who understand the business of our clients.
When it comes to your interests in intellectual property and competition law, BDPE is your trusted partner.
