Sophie Ertl has wide-ranging experience in handling legal disputes occurring in the intellectual property field. She has successfully represented clients in numerous patent and utility model infringement cases as well as in patent nullity and utility model cancellation proceedings. Sophie drafts patent applications and represents clients in patent prosecution, opposition and appeal proceedings. In addition, she regularly prepares legal opinions on technical and legal issues, including freedom-to-operate and validity analyses. Her technical expertise covers the fields of mechanical engineering, medical devices, materials engineering and automotive and aeronautical technologies.

A particular highlight of Sophie's professional career was her successful defense of a well-known US corporation operating in the field of medical devices against a number of attacks by patent trolls.