Stephan coordinates parallel patent infringement and revocation proceedings in the major European countries, helping clients devise effective cross-border litigation strategies.

He conducts main action infringement proceedings, preliminary injunction proceedings and inspection proceedings at the German district and appellate courts as well as nullity actions at the German Federal Patent Court and the Federal Supreme Court. His strategic advice covers questions regarding the new Unified Patent Court and the European Patent with unitary effect. Stephan is recognized as “a known quantity in the life sciences and telecoms spheres” (IAM Patent 1000, 2020) and as “life sciences sage who has proved his mettle in a plethora of nullity actions before the Federal Patent Court and the Federal Court of Justice” (IAM Patent 1000, 2018). His “adroitness in presenting strong life sciences arguments is much-appreciated by those who rely on him in court” (IAM Patent 1000, 2019). Clients also praise his “unbeatable rhetoric skills in court and great personality” (IP Stars 2017). They appreciate his “written submissions of top quality” and his “excellent all-round knowledge of law and business” (IP Stars, 2016).