Case law

IAM World’s Leading Patent Professionals 2025: Christian Kirchner and Henning Lülf awarded for the first time

We are pleased that our law firm has once again received multiple awards in this year's IAM Patent 1000: The World's Leading Patent Professionals 2025 ranking.

This industry guide highlights law firms and attorneys who are among the leading patent specialists worldwide. According to IAM, our team of “outstanding technical and legal experts” is noted for its “diverse skill sets and deep industry knowledge,” enabling us to provide comprehensive and commercially minded advice across all areas of intellectual property.

Our “highly professional, goal-oriented and practical approach” is particularly emphasized, which, according to IAM, enables our clients to effectively secure and protect their intellectual property rights worldwide.

Several of our attorneys receive special recognition for their individual achievements:

  • Dr. Mathias Ricker, Dr. Christiane Maxien and Dr. Holger Tostmann are recognized for their expertise in chemical patent practice. Dr. Ricker is praised for his “profound legal knowledge and his creative, practical approach” - his “open and authentic manner makes working with him an experience.” Dr. Maxien was praised for her “global perspective and business savvy advice.” was emphasized. Dr. Tostmann received recognition for his “excellent advice and outstanding service in handling complex IP matters”, including his practice for BMW.
  • Dr. Cornelia Oetke is recommended for her strategic support in the biotech and pharmaceutical sectors. IAM describes her as “strategic and pragmatic, with the ability to present complex concepts in an easy-to-digest way” and emphasizes her “straightforward, collaborative way of working, and reliability when it comes to meeting deadlines”.
  • Dr. Michael Wallinger, Dr. Alexander Schlotter and Dr. Christian Kirchner are singled out for special mention in the technology section: Dr. Wallinger “expertly navigates complex patent challenges, employing his rich strategic playbook to deliver exceptional results.” Dr. Schlotter “excels in securing and maintaining robust patent protection” while IAM new hire Dr. Kirchner is described as a “highly qualified prosecution specialist capable of successfully handling complex inventions in the mechanical engineering and medical devices fields.”
  • Dr. Thomas Schachl is awarded for his procedural consulting expertise. IAM emphasizes: "Thomas combines outstanding technical understanding with legal expertise, enabling him to handle complex cases and devise effective solutions. He explains complex procedures clearly and precisely, and is very goal oriented. His strong collaborative relationships with his patent prosecution colleagues as well as his clients are particularly noteworthy."
  • Dr. Henning Lülf is - last but not least - listed in this ranking for the first time as a “next generation” patent attorney, having already been rated a “Rising Star” by the IP Stars ranking in 2024.

We are very pleased about this renewed recognition and would like to thank our clients and foreign colleagues for their continued trust.

Click here for the complete law firm profile in IAM Patent 1000.