Dr. Jörn Peters and Benjamin Grzimek, German attorneys-at-law, are joining CASALONGA and opening a new office in Düsseldorf
CASALONGA is pleased to announce the arrival of Benjamin Grzimek and his team and the opening of a second office in Germany, in Düsseldorf, specializing in patent litigation, on the 1st of August 2025.
Benjamin Grzimek
Previously partner at Fieldfisher in Düsseldorf, Benjamin’s practice focuses on patent litigation before the German national courts and the Unified Patent Court (UPC), with a strong expertise in disputes concerning life science and standard-essential patents.
He is particularly experienced in assisting with and coordinating cross-border litigations and has acted for both plaintiffs and defendants in many international disputes, working with colleagues in such countries as the US, China, Japan and Korea as well as many European countries, in particular the UK. Benjamin has acted as counsel and as arbitrator in patent related arbitration proceedings.
His clients include small and medium-sized enterprises as well as global corporations from pharmaceutical and other life sciences, medical devices, telecommunications, consumer electronics, mechanical engineering and other industries.
He advises his clients in German, English and Spanish.
Benjamin is joining with Dr. Jörn Peters and Aylin Cremers. Jörn has more than 8 years of experience in patent litigation. He joins CASALONGA as counsel. Aylin, starting in October, will join as senior associate. The team will continue handling complex and international disputes for their clients.
EU Patent Litigation Developments
Benjamin’s team will be reinforcing CASALONGA’s patent litigation practice in Europe.
With a litigation team of 17 attorneys-at-law and 10 patent litigators across Munich, Düsseldorf, Paris and soon Milan, CASALONGA is becoming one of the main patent litigation players in Europe.
CASALONGA’s philosophy is to propose specialized patent litigation teams of attorneys-at-law and patent attorneys in the different EU jurisdictions who work hand in hand with a common goal to serve the clients and win their cases.
Benjamin and Jörn are key to this project. They will contribute to those developments with their knowledge and practice of German and UPC litigation.
Caroline Casalonga: “Our vision is to become a major European actor for UPC and patent litigation with attorneys-at-law and patent attorneys in various EU countries working together to represent the clients. We believe that, today, for patent litigation in Europe, it is essential to propose cross-country teams who know how to work together and do not compete against each other but serve the client’s interests to win the case. Benjamin has a strong experience in cross-border patent disputes and is well known for its involvement in UPC and German patent litigation, especially in the field of standard-essential patents. He is the perfect match for CASALONGA’s patent litigation developments in Europe.”
“I'm a firm believer in the European idea and I'm thrilled to be joining CASALONGA, where collaboration between offices and across borders is more than a slogan. Our goal as a first-rate European IP boutique will simply be to provide our clients with the best service there is”, says Benjamin.
About CASALONGA
Founded in 1867, CASALONGA has been recognized as the French IP Disputes Firm of the Year 2025 by Managing IP.
CASALONGA is a European IP law firm with attorneys-at-law and patent and/or trademark attorneys working together across Europe with offices in Germany, France, Italy and Spain.
Pioneer, independent, dynamic and innovative firm CASALONGA represents its clients both in litigation and counseling for the protection, defense, structuring and enhancement of their IP rights.
CASALONGA’s office in Munich opened in 1978. In 2025, Benjamin Grzimek is creating the litigation practice of the firm in Germany. The German team should grow in the next few months.
Altogether, CASALONGA has 27 patent and/or trademark attorneys and 17 attorneys-at-law, including 28 representatives before the UPC across its Munich, Düsseldorf, Paris and Alicante offices.
Last year, the firm consolidated its telecom and electronics team with the hire of two partners, patent attorneys and representatives before the UPC, Ghislain de Trémiolles and Augustin Le Tourneau, and its life sciences team with the hire of three patent attorneys and representatives before the UPC: two partners, Véronique Marcadé and Denise Nestle-Nguyen, and one counsel, Hélène Leblois-Préhaud.
For more information: www.casalonga.com.
Press contact:
Elise Pascal-Heuzé
