Wallinger Ricker Schlotter Tostmann (WRST) is recognised for patent protection and litigation work. The firm’s patent attorneys can handle patent work in chemistry, life sciences, medical devices, and engineering.
Notable patent attorneys: Christiane Maxien, Cornelia Oetke, Erich Fritsche, Christian Kirchner, Henning Luelf, Mathias Ricker, Alexander Schlotter, and Holger Tostmann.
Notable lawyer: Thomas Schachl.
2025
"WRST is very professional and friendly and provides high-quality and timely service."
"Their team demonstrated exceptional professionalism and comprehensive expertise across various areas of IP, ensuring thorough and effective management of the patent portfolio."
"Excellent expertise, very flexible."
"I appreciate receiving practical advice and the wide range of backgrounds that the professionals at WRST have. I always feel like my questions and clients are prioritised and trust the advice provided."
"Friendly, precise work, and excellent advice."
"Their advice was instrumental in navigating complex IP challenges successfully."
Holger Tostmann
"Holger Tostmann and his team are highly responsive and advise both strategically and practically on patent matters. We have had much success with them in obtaining valuable patent protection in Europe, as well as defending European patents challenged in opposition."
Alexander Schlotter
"Dr. Schlotter has a deep understanding of mechanical engineering. [He is] brilliant."
2023
"The team is very friendly and clearly communicates what is expected from the client, and this makes processes run smoother."
"The team are very friendly, and they provide nice and clear explanations."
"They are proactive, reliable and engaged."
"We appreciate the excellent competence and service."
"We appreciate their responsiveness and providing understandable answers, as well as the cost transparency."
"They are reliable and cannot be ruffled, even with short-turnaround tasks."
2022
"We have had several years of excellent experience and partnership."
"A strategic partner that not only addresses questions we raise but helps us see around corners in identifying and preparing for future issues."
"Professional administrative handling coupled with deep technological insight and an understanding of a small company."
"The work is precise and accurate as well as pragmatic and innovative."
"Their attorneys are quick and experienced, both technically and legally."
Case studies show patent counselling, EPO proceedings and prosecution work. Clients include Archroma, Autoneum, Eastman Chemical Company, BMW, Boehringer Ingelheim, and Robert Bosch.