Reibl v Hughes [1980] 2 S.C.R. 880 is a leading decision of the Supreme Court of Canada on negligence, medical malpractice, informed consent, the duty to warn, and causation. The case settled the issue of when a physician may be sued for battery and when it is more appropriate to sue the doctor in negligence. The Court wrote unanimously that "unless there has been misrepresentation or fraud to secure consent to the treatment, a failure to disclose the attendant risks, however serious, should go to negligence rather than to battery." The case also marked the creation of a standard whereby a physician must give the patient sufficient information so that an objective, reasonable person in the patient's position would be able to make an informed choice about a medical procedure.