• Born in 1971 
• Studied law at the University of Cologne 1991-1996
• Doctorate: 1997 and 2016
• Legal clerkship: 1996-1998

• Lawyer since 15.11.2000, admitted as specialist lawyer for medical law and as specialist lawyer for criminal law, admitted as lawyer at the International Criminal Court, The Hague (Netherlands) and certified as defense lawyer in fiscal offense law (DSV e.V.) and in criminal business law (white collar crime) (DSV e.V.)
• Active since 2000 as criminal defense lawyer in the fields of medical criminal law, commercial and tax criminal law as well as criminal law compliance
•  Legal Adviser to the DGMKG German Society for Oral and Maxillofacial Surgery, North Rhine-Westphalia Regional Association
• Legal adviser to the ECDI European Centers For Dental Implantology
• Professor (part-time) at the Technical University) with teaching qualification for criminal and public law
• Lecturer for Medical Criminal Law and Patient Rights at the Faculty of Health of the University of Witten/Herdecke, Germany
• Member of the editorial board of the magazine "Police and Science", Publishing House for Police Science, Frankfurt/Main, Germany
• Owner of EBV Editing BioSciences Publishing House for Medical and Health Sciences, Cologne
• Scientific author and lecturer

• In-house counsel for Bayer AG, including criminal prosecution of the withdrawal of the lipid-lowering drug Lipobay/Baycol in Germany and internationally (2000 to 2004)
• Higher police enforcement service of the federal government (Federal Border Guard, today Federal Police), among others Head of Operations, member and legal adviser of the "Expo 2000" command staff in Hanover, training at the Police Management Academy in Münster (1998 to 2000)
• Research assistant at the Chair for Civil Law, Civil Procedure Law and Philosophy of Law at the University of Cologne and at the Institute for Emergency Medicine of the Cologne Fire Brigade

• High School Graduation in Cologne (1991)
• Law studies at the University of Cologne, degree: First State Examination in Law and Diploma in Law (1991 to 1996)
• Doctoral studies in law at the University of Cologne, Chair of Civil Law, Civil Procedure Law and Philosophy of Law; Degree: Dr. iur. (with honors) (1996 to 1997)
• Master's degree in Political Science, History and Philosophy at the University of Cologne (1996 to 1999)
• Training for the higher police enforcement service of the Federation at the Federal Border Police Academy, Lübeck, and the Police Management Academy (now German Police University), Münster
• Legal clerkship at the Higher Regional Court of Cologne (1996 to 1998), degree: Second State Examination in Law (with distinction)
• Doctoral studies in theoretical medicine at the University of Witten/Herdecke, degree: Dr. rer. medic. (with honors) (2015 to 2016

• Train driver and instructor at the Voluntary Fire Brigade Cologne, (1988 to 1998)
• Trainer and member of the board of the sports club (1989 to 1989)
• Member of the civil protection staff of the City of Cologne (1992 to 1998) Collaboration at the Institute for Emergency Medicine of the Cologne Fire Department (1996 to 2005)
• Dog handler in the rescue dog squadron of the German Red Cross Cologne (2014 to 2016)

Prof. Dr. Dr. Fehn’s law firm focuses on the entire spectrum of criminal law as well as on selected areas of medical law (see areas of law). Years of experience, a corresponding specialization, a functioning network, a view beyond national borders and a commitment to the interests and goals of our clients are the basis for high-quality, solution-oriented and creative advice. In the area of criminal law, this is directed at companies, entrepreneurs, board members, managing directors and other executives as well as at private individuals seeking advice. In the field of medical law and medical criminal law, the firm focuses in particular on advising doctors, dentists, veterinarians, pharmacists, hospital operators, medical and dental care centers, billing companies, insurers, pharmaceutical and medical device manufacturers and contract research organizations.

A further, cross-disciplinary focus is compliance consulting, with which possible legal problems can be identified and eliminated in advance of criminal, professional, licensing or supervisory measures or the assertion of liability claims.

In order to provide you with a comprehensive range of legal services in areas of law and consulting which the law firm itself does not offer due to its specialization, we work together with law firms of various specializations and with tax consulting firms in Germany and abroad and are well networked through various memberships (see memberships). We maintain particularly good relations in the USA.