No Presumption of Fault from Happening of Injury is a legal doctrine that states that no one is to be held liable for an injury that has been sustained unless it can be proved that someone was at fault. This doctrine is based on the principle of strict liability, which is the idea that a person should be held liable for their actions regardless of whether they intended for the action to cause harm or not. There are two types of No Presumption of Fault from Happening of Injury: "No Fault" and "Pure No Fault." In "No Fault" cases, the plaintiff must prove that the defendant was at least negligent in causing the injury, while in "Pure No Fault" cases, the plaintiff must prove that the defendant was the cause of the injury. Additionally, some states have laws which provide for a form of No Presumption of Fault from Happening of Injury, known as "comparative negligence," which requires the court to apportion fault between the parties.