The core activity of Renz & Partners is the practice of law in the fields of aviation and sports. Specifically, the company offers legal advice and representation in the following areas: Aviation: + Purchase, sale, financing and leasing of aircraft + Operation and maintenance of aircraft + Aviation law and regulation + Accidents and damage cases + Customs and tax law in aviation Sports: + Contract law and negotiations for athletes, coaches and clubs + Sports law and regulation + Doping cases and arbitration proceedings + Sponsorship and marketing of athletes and events The company thus provides specialized legal services to companies and individuals in the aviation and sports industries.