For humanitarian reasons and social ethics reasons, doctors should have the freedom to choose various methods and conditions in the process of diagnosis and treatment. In addition, this method directly targets at living human or animal bodies and cannot be used in industry, so it is not an invention in the sense of patent law. Therefore, the diagnosis and treatment of diseases cannot be patented.
However, instruments or devices used to implement disease diagnosis and treatment methods, as well as substances or materials used for disease diagnosis and treatment methods, belong to the objects that can be granted patent rights.