Walter Fellmann’s research focuses on general and special contract law. He completed post-doctoral studies at the University of Zurich in 1992 with a Berner Kommentar on the law of mandate (Art. 394-406 OR), and, building on his foundation in contractual law, has been occupied with service contract law ever since. This has produced fundamental work on medical law, in particular the doctor-patient relationship, and on the law of the legal profession. His publications in both areas extend as far as professional law, i.e. public law. These investigations have resulted in commentaries on the professional duties of medical personnel (Art. 40 MedBG) and of lawyers (Art. BGFA), along with a textbook on the law of the legal profession. Walter Fellmann has also handled issues of private building law and ordinary partnership law, covered in a Berner Kommentar on ordinary partnership law (Art. 530-544 OR) co-authored with Professor Karin Müller.

One of Walter Fellmann’s key fields of activity is the contractual and non-contractual right to compensation and associated private insurance law. He has produced numerous publications in this area on the liability of doctors, lawyers and architects. In addition, Walter Fellmann has dealt extensively with product liability and product safety, publishing various major works in this field including a Basler Kommentar on product liability law (PrHG). He has also produced the fundamental works and textbooks Volume I (co-authored with Dr. Andrea Kottmann) and Volume II of Swiss Civil Liability Law; Volume III is in progress and due for publication in 2015.

Building on his experience as a self-employed lawyer, which Walter Fellmann still continues alongside his academic activities, his publications also include various works covering procedural law and, in particular, liability proceedings.

As part of his teaching activities at the university, Walter Fellmann has given lectures on compensation law, medical law (with Professor Regina Aebi-Müller), the law of the legal profession and the practical fundamentals of the Code of Obligations. He is also involved in private law exercises at the end of the Bachelor’s course.

In addition, Walter Fellmann is strongly committed to further education. His associated activities include joint leadership together with Professor Marc Hürzeler of the CAS training course in liability and insurance law, which is a prerequisite for the title of SAV specialist liability and insurance law solicitor awarded by the Swiss Bar Association. In addition, he gives specialist lectures at a wide variety of conferences and organises his own further training events.