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.
Trespass is an area of tort law broadly divided into three groups: trespass to the person, trespass to chattels, and trespass to land.
In law, a reasonable person, reasonable man, or the man on the Clapham omnibus, is a hypothetical person whose character and care conduct, under any common set of facts, is decided through reasoning of good practice or policy. It is a legal fiction crafted by the courts and communicated through case law and jury instructions. In some practices, for circumstances arising from an uncommon set of facts, this person represents a composite of a relevant community's judgement as to how a typical member of said community should behave in situations that might pose a threat of harm to the public.
Cuius est solum, eius est usque ad coelum et ad inferos is a principle of property law, stating that property holders have rights not only to the plot of land itself, but also the air above and the ground below. The principle is often referred to in its abbreviated form as the ad coelum doctrine.
The open-fields doctrine, in the U.S. law of criminal procedure, is the legal doctrine that a "warrantless search of the area outside a property owner's curtilage" does not violate the Fourth Amendment to the United States Constitution. However, "unless there is some other legal basis for the search," such a search "must exclude the home and any adjoining land that is within an enclosure or otherwise protected from public scrutiny."
In tort law, a duty of care is a legal obligation that is imposed on an individual, requiring adherence to a standard of reasonable care to avoid careless acts that could foreseeably harm others, and lead to claim in negligence. 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 that 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 law, the duty to retreat, or requirement of safe retreat, is a legal requirement in some jurisdictions that a threatened person cannot harm another in self-defense when it is possible instead to retreat to a place of safety. This requirement contrasts with the right in some other jurisdictions to stand one's ground, meaning being allowed to defend one's self instead of retreating.
Under the Noerr–Pennington doctrine, private entities are immune from liability under the antitrust laws for attempts to influence the passage or enforcement of laws, even if the laws they advocate for would have anticompetitive effects. The doctrine is grounded in the First Amendment protection of political speech, and "upon a recognition that the antitrust laws, 'tailored as they are for the business world, are not at all appropriate for application in the political arena.'"
The attractive nuisance doctrine applies to the law of torts in some jurisdictions. It states that a landowner may be held liable for injuries to children trespassing on the land if the injury is caused by an object on the land that is likely to attract children. The doctrine is designed to protect children who are unable to appreciate the risk posed by the object, by imposing a liability on the landowner. The doctrine has been applied to hold landowners liable for injuries caused by abandoned cars, piles of lumber or sand, trampolines, and swimming pools. However, it can be applied to virtually anything on the property.
Rylands v Fletcher (1868) LR 3 HL 330 is a leading decision by the House of Lords which established a new area of English tort law. It established the rule that one's non-natural use of their land, which leads to another's land being damaged as a result of dangerous things emanating from the land, is strictly liable.
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.
In United States law, the Aguilar–Spinelli test was a judicial guideline set down by the U.S. Supreme Court for evaluating the validity of a search warrant or a warrantless arrest based on information provided by a confidential informant or an anonymous tip. The Supreme Court abandoned the Aguilar–Spinelli test in Illinois v. Gates, 462 U.S. 213 (1983), in favor of a rule that evaluates the reliability of the information under the "totality of the circumstances." However, Alaska, Hawaii, Massachusetts, New York, Vermont, Oregon, and Washington have retained the Aguilar–Spinelli test, based on their own state constitutions.
Premises liability is the liability that a landowner or occupier has for certain torts that occur on their land.
Drainage law is a specific area of water law related to drainage of surface water on real property. It is particularly important in areas where freshwater is scarce, flooding is common, or water is in high demand for agricultural or commercial purposes.
Ultramares Corporation v. Touche, 174 N.E. 441 (1932) is a US tort law case regarding negligent misstatement, decided by Cardozo, C.J. It contained the now famous line on "floodgates" that the law should not admit "to a liability in an indeterminate amount for an indeterminate time to an indeterminate class."
In the state of Maryland, the right of self-defense is mostly governed by case law, but there is also a statute.
Landlord–tenant law is the field of law that deals with the rights and duties of landlords and tenants.
Davidson Bros., Inc. v. D. Katz & Sons, Inc., 643 A.2d 642, was a case decided by the Appellate Division of the Superior Court of New Jersey that first applied public policy considerations instead of the touch and concern doctrine when deciding the validity of a restrictive covenant.
The Penal Law of the State of New York combines justification and necessity into a single article, Article 35. "Defense of Justification" comprises sections 35.05 through 35.30 of the Penal Law. The general provision relating to necessity, section 35.05, provides:
§ 35.05 Justification; generally.
Unless otherwise limited by the ensuing provisions of this article defining justifiable use of physical force, conduct which would otherwise constitute an offense is justifiable and not criminal when:
United States v. Terminal Railroad Association, 224 U.S. 383 (1912), is the first case in which the United States Supreme Court held it a violation of the antitrust laws to refuse to a competitor access to a facility necessary for entering or remaining in the market. In this case a combination of firms was carrying out the restrictive practice, rather than a single firm, which made the conduct susceptible to challenge under section 1 of the Sherman Act rather than under the heightened standard of section 2 of that act. Even so, the case was brought under both sections.
