Negligence per se is a doctrine in US law whereby an act is considered negligent because it violates a statute. The doctrine is effectively a form of strict liability.
Negligence is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort law known as negligence involves harm caused by failing to act as a form of carelessness possibly with extenuating circumstances. The core concept of negligence is that people should exercise reasonable care in their actions, by taking account of the potential harm that they might foreseeably cause to other people or property.
Product liability is the area of law in which manufacturers, distributors, suppliers, retailers, and others who make products available to the public are held responsible for the injuries those products cause. Although the word "product" has broad connotations, product liability as an area of law is traditionally limited to products in the form of tangible personal property.
In law and insurance, a proximate cause is an event sufficiently related to an injury that the courts deem the event to be the cause of that injury. There are two types of causation in the law: cause-in-fact, and proximate cause. Cause-in-fact is determined by the "but for" test: But for the action, the result would not have happened. The action is a necessary condition, but may not be a sufficient condition, for the resulting injury. A few circumstances exist where the but for test is ineffective. Since but-for causation is very easy to show, a second test is used to determine if an action is close enough to a harm in a "chain of events" to be legally valid. This test is called proximate cause. Proximate cause is a key principle of Insurance and is concerned with how the loss or damage actually occurred. There are several competing theories of proximate cause. For an act to be deemed to cause a harm, both tests must be met; proximate cause is a legal limitation on cause-in-fact.
A tort, in common law jurisdiction, is a civil wrong that causes a claimant to suffer loss or harm, resulting in legal liability for the person who commits the tortious act. It can include intentional infliction of emotional distress, negligence, financial loss, injury, invasion of privacy, and numerous other harms. The word tort stems from Old French via the Norman Conquest and Latin via the Roman Empire.
In criminal and civil law, strict liability is a standard of liability under which a person is legally responsible for the consequences flowing from an activity even in the absence of fault or criminal intent on the part of the defendant.
This article addresses torts in United States law. As such, it covers primarily common law. Moreover, it provides general rules, as individual states all have separate civil codes. There are three general categories of torts: intentional torts, negligence, and strict liability torts.
In tort law, a duty of care is a legal obligation which is imposed on an individual, requiring adherence to a standard of reasonable care while performing any acts that could foreseeably harm others. It is the first element that must be established to proceed with an action in negligence. The claimant must be able to show a duty of care imposed by law which the defendant has breached. In turn, breaching a duty may subject an individual to liability. The duty of care may be imposed by operation of law between individuals who have no current direct relationship but eventually become related in some manner, as defined by common law.
In some common law jurisdictions, contributory negligence is a defense to a tort claim based on negligence. If it is available, the defense completely bars plaintiffs from any recovery if they contribute to their own injury through their own negligence.
Comparative negligence, called non-absolute contributory negligence outside the United States, is a partial legal defense that reduces the amount of damages that a plaintiff can recover in a negligence-based claim, based upon the degree to which the plaintiff's own negligence contributed to cause the injury. When the defense is asserted, the factfinder, usually a jury, must decide the degree to which the plaintiff's negligence and the combined negligence of all other relevant actors all contributed to cause the plaintiff's damages. It is a modification of the doctrine of contributory negligence that disallows any recovery by a plaintiff whose negligence contributed even minimally to causing the damages.
Comparative responsibility is a doctrine of tort law that compares the fault of each party in a lawsuit for a single injury. Comparative responsibility may apply to intentional torts as well as negligence and encompasses the doctrine of comparative negligence.
Causation is the "causal relationship between the defendant's conduct and end result". In other words, causation provides a means of connecting conduct with a resulting effect, typically an injury. In criminal law, it is defined as the actus reus from which the specific injury or other effect arose and is combined with mens rea to comprise the elements of guilt. Causation only applies where a result has been achieved and therefore is immaterial with regard to inchoate offenses.
Enterprise liability is a legal doctrine under which individual entities can be held jointly liable for some action on the basis of being part of a shared enterprise. Enterprise liability is a form of secondary liability.
Tort reform refers to changes in the civil justice system in common law countries that aim to reduce the ability of plaintiffs to bring tort litigation or to reduce damages they can receive. Such changes are generally justified under the grounds that litigation is an inefficient means to compensate plaintiffs; that tort law permits frivolous or otherwise undesirable litigation to crowd the court system; or that the fear of litigation can serve to curtail innovation, raise the cost of consumer goods or insurance premiums for suppliers of services, and increase legal costs for businesses. In civil law jurisdictions, the equivalent concept is reform to the system of delicts, actionable wrongs comparable to torts which are typically set out in a civil code rather than based on precedent as torts are in common law jurisdictions.
Summers v. Tice, 33 Cal.2d 80, 199 P.2d 1 (1948), is a seminal California Supreme Court tort law decision relating to the issue of liability where a plaintiff cannot identify with specificity which among multiple defendants caused his harm. The case established the doctrine of alternative liability and has had its greatest influence in the area of product liability in American jurisprudence.
The following outline is provided as an overview of and introduction to tort law:
Market share liability is a legal doctrine that allows a plaintiff to establish a prima facie case against a group of product manufacturers for an injury caused by a product, even when the plaintiff does not know from which defendant the product originated. The doctrine is unique to the law of the United States and apportions liability among the manufacturers according to their share of the market for the product giving rise to the plaintiff's injury.
Inwood Laboratories Inc. v. Ives Laboratories, Inc., 456 U.S. 844 (1982), is a United States Supreme Court case, in which the Court confirmed the application of and set out a test for contributory trademark liability under § 32 of the Lanham Act.
Kiobel v. Royal Dutch Petroleum Co., 569 U.S. 108 (2013), was a United States Supreme Court decision in which the court found that the Alien Tort Claims Act presumptively does not apply extraterritorially.
Halliburton Co. v. Erica P. John Fund, Inc., 573 U.S. 258 (2014), is a United States Supreme Court case regarding class action certification for a securities fraud claim. Under the fraud-on-the-market theory, the Court had to inquire as to if markets are economically efficient. The Court presumed they are.
