A quasi-contract is a fictional contract recognised by a court. The notion of a quasi-contract can be traced to Roman law and is still a concept used in some modern legal systems. Quasi contract laws have been deduced from the Latin statement "Nemo debet locupletari ex aliena jactura", which proclaims that no man should grow rich out of another person's loss. It was one of the central doctrines of Roman law.
Quantum meruit is a Latin phrase meaning "what one has earned". In the context of contract law, it means something along the lines of "reasonable value of services".
The law of restitution is the law of gains-based recovery, in which a court orders the defendant to give up their gains to the claimant. It should be contrasted with the law of compensation, the law of loss-based recovery, in which a court orders the defendant to pay the claimant for their loss.
Peevyhouse v. Garland Coal & Mining Co., 382 P.2d 109, is a US contract law case decided by the Supreme Court of Oklahoma. It concerns the question of when specific performance of a contractual obligation will be granted and the measure of expectation damages.
Rose & Frank Co v JR Crompton & Bros Ltd [1924] is a leading decision on English contract law, regarding the intention to create legal relations in commercial arrangements. In the Court of Appeal, Atkin LJ delivered an important dissenting judgment which was upheld by the House of Lords.
English contract law is the body of law that regulates legally binding agreements in England and Wales. With its roots in the lex mercatoria and the activism of the judiciary during the industrial revolution, it shares a heritage with countries across the Commonwealth, from membership in the European Union, continuing membership in Unidroit, and to a lesser extent the United States. Any agreement that is enforceable in court is a contract. A contract is a voluntary obligation, contrasting to the duty to not violate others rights in tort or unjust enrichment. English law places a high value on ensuring people have truly consented to the deals that bind them in court, so long as they comply with statutory and human rights.
The English law of unjust enrichment is part of the English law of obligations, along with the law of contract, tort, and trusts. The law of unjust enrichment deals with circumstances in which one person is required to make restitution of a benefit acquired at the expense of another in circumstances which are unjust.
Sumpter v Hedges [1898] 1 QB 673 is an English contract law case, concerning substantial performance of a contract and restitution for unjust enrichment.
Cutter v Powell (1795) 101 ER 573 is an English contract law case, concerning substantial performance of a contract.
Revlon, Inc. v. MacAndrews & Forbes Holdings, Inc., 506 A.2d 173, was a landmark decision of the Delaware Supreme Court on hostile takeovers.
Cobbe v Yeoman's Row Management Ltd[2008] UKHL 55 is a House of Lords case in English land law and relates to proprietary estoppel in the multi-property developer context. The court of final appeal awarded the project manager £150,000 on a quantum meruit basis for unjust enrichment because Yeoman's Row had received the benefit of his services without paying for that. The court refused to find or acknowledge a binding contract, prior arrangement with a third party or promise, overturning a £2m award on the basis of a possible lien arising from a promise over the property. The court found a non-binding agreement in principle, entirely subject to the owner's final say to take into account for example their view of the market; this was the basis on the facts on which the parties were proceeding.
Guinness plc v Saunders [1989] UKHL 2 is a UK company law case, regarding the power of the company to pay directors. It required that whatever rules exist for payment in the company's articles, they must be strictly observed.
Mogul Steamship Co Ltd v McGregor, Gow & Co [1892] AC 25 is an English tort law case concerning the economic tort of conspiracy to injure. A product of its time, the courts adhered to a laissez faire doctrine allowing firms to form a cartel, which would now be seen as contrary to the Competition Act 1998.
BP Exploration Co (Libya) v Hunt [1983] 2 AC 352 is an English contract and unjust enrichment case, concerning the frustration of an agreement.
Sagar v Ridehalgh & Sons Ltd [1931] 1 Ch 310 is a UK labour law case concerning the contract of employment. It concerns the implication of terms, regarding deductions from wages, through the custom of an industry.
Bristol & West Building Society v Henning [1985] EWCA Civ 6 is an English land law case that holds a person can consent to give up the right to an overriding interest in land, that will bind third parties, such as banks, that purchase a property. Although dealing with unregistered land, it is equally applicable in the case of registered land and now falls under the Land Registration Act 2002.
Cuckmere Brick Co v Mutual Finance[1971] EWCA Civ 9 is an English tort law case, establishing the lender must publish/promote the materially beneficial key, intrinsic facts as to land in mortgage repossession sales. As it affects the duty of mortgagees, to that extent it can be considered within the periphery of English land law also.
McDonald v Coys of Kensington (Sales) Ltd [2004] EWCA Civ 47 is an English unjust enrichment law case, concerning the nature of an enrichment.
Relfo Ltd v Varsani [2014] EWCA Civ 360 is an English unjust enrichment law case, concerning to what extent enrichment of the defendant must be at the expense of the claimant.
Miles v Wakefield Metropolitan District Council[1987] UKHL 15 is a UK labour law case, concerning the theory of partial performance and strike action. Its authority has been questioned since.
