In human interactions, good faith is a sincere intention to be fair, open, and honest, regardless of the outcome of the interaction. Some Latin phrases have lost their literal meaning over centuries, but that is not the case with bona fides, which is still widely used and interchangeable with its generally-accepted modern-day English translation of good faith. It is an important concept within law and business. The opposed concepts are bad faith, mala fides (duplicity) and perfidy (pretense).
Estoppel is a judicial device in common law legal systems whereby a court may prevent or "estop" a person from making assertions or from going back on their word; the person so prevented is said to be "estopped". Estoppel may prevent someone from bringing a particular claim. Legal doctrines of estoppel are based in both common law and equity. Estoppel is also a concept in international law.
Step-Saver Data Systems, Inc. v. Wyse Technology was a case in the U.S. Court of Appeals for the Third Circuit primarily concerned with the enforceability of box-top licenses and end user license agreements (EULA) and their place in U.S. contract law. During the relevant period, Step-Saver Data Systems was a value-added reseller, combining hardware and software from different vendors to offer a fully functioning computer system to various end users. Step-Saver's products included software produced by Software Link, Inc (TSL), computer terminals produced by Wyse Technology, and main computers produced by IBM. The fundamental question raised in this case was whether the shrinkwrap licenses accompanying TSL's software were legally binding, given that different terms were negotiated over the phone with Step-Saver prior to receiving physical copies of the software. The case was first heard in the United States District Court for the Eastern District of Pennsylvania, where the court ruled that the shrinkwrap licenses were legally binding. However, the U.S. Court of Appeals for the Third Circuit subsequently reversed this decision, ruling that the shrinkwrap licenses were not legally binding.
Carlill v Carbolic Smoke Ball Company[1893] 1 QB 256 is an English contract law decision by the Court of Appeal, which held an advertisement containing certain terms to get a reward constituted a binding unilateral offer that could be accepted by anyone who performed its terms. It is notable for its treatment of contract and of puffery in advertising, for its curious subject matter associated with medical quackery, and how the influential judges developed the law in inventive ways. Carlill is frequently discussed as an introductory contract case, and may often be the first legal case a law student studies in the law of contract.
Consideration is an English common law concept within the law of contract, and is a necessity for simple contracts. The concept of consideration has been adopted by other common law jurisdictions, including the US.
Assumpsit, or more fully, action in assumpsit, was a form of action at common law used to enforce what are now called obligations arising in tort and contract; and in some common law jurisdictions, unjust enrichment. The origins of the action can be traced to the 14th century, when litigants seeking justice in the royal courts turned from the writs of covenant and debt to the trespass on the case.
Balfour v Balfour [1919] 2 KB 571 is a leading English contract law case. It held that there is a rebuttable presumption against an intention to create a legally enforceable agreement when the agreement is domestic in nature.
Hartog v Colin & Shields [1939] 3 All ER 566 is an important English contract law case regarding unilateral mistake. It holds that when it is obvious that someone has made a mistake in the terms of an offer, one may not simply "snap up" the offer and be able to enforce the agreement.
Hamer v. Sidway, 124 N.Y. 538, 27 N.E. 256, was a noted decision by the New York Court of Appeals, New York, United States. It is an important case in American contract law by establishing that forbearance of legal rights on promises of future benefit made by other parties can constitute valid consideration, and, in addition, unilateral contracts were valid under New York law.
Sully v. Drennan, 113 U.S. 287 (1885), was an appeal from an order of the Circuit Court for the Southern District of Iowa in the United States remanding to the state court a case which had been removed from the state into the circuit court.
Daulia Ltd v Four Millbank Nominees Ltd [1977] is an English contract law case, concerning unilateral contracts, and when embarking on the performance of an act for which an offer is open, at what point the offer may be withdrawn. In particular, Goff LJ observed that there would be a duty to not prevent full performance of terms in a unilateral offer, once performance had begun.
Shadwell v Shadwell [1860] EWHC CP J88 is an English contract law case, which held that it would be a valid consideration for the court to enforce a contract if a pre-existing duty was performed, so long as it was for a third party.
Slade's Case was a case in English contract law that ran from 1596 to 1602. Under the medieval common law, claims seeking the repayment of a debt or other matters could only be pursued through a writ of debt in the Court of Common Pleas, a problematic and archaic process. By 1558 the lawyers had succeeded in creating another method, enforced by the Court of King's Bench, through the action of assumpsit, which was technically for deceit. The legal fiction used was that by failing to pay after promising to do so, a defendant had committed deceit, and was liable to the plaintiff. The conservative Common Pleas, through the appellate court the Court of Exchequer Chamber, began to overrule decisions made by the King's Bench on assumpsit, causing friction between the courts.
Russian Commercial and Industrial Bank v Comptoir d'Estcompte de Mulhouse [1925] AC 112 is a UK company law and banking case, concerning the authority of an officer of a company to carry out its actions, and a company's existence as a legal person.
Union Government v Vianini Ferro-Concrete Pipes (Pty) Ltd is an important case in South African contract law, heard in the Appellate Division by De Wet CJ, Watermeyer JA, Tindall JA, Centlivres JA and Feetham JA on 25 September – 15 October 1940.
Le Riche v Hamman, an important case in South African contract law, was heard in the Appellate Division in 1946, with Watermeyer CJ, Tindall JA and Greenberg JA presiding.
Stonegate Securities Ltd v Gregory [1980] Ch 576 is a UK insolvency law case concerning the liquidation procedure when a company is unable to repay its debts. It held that a winding up petition would not be granted to a petitioner to whom a debt was bona fide under dispute.
Civil procedure in South Africa is the formal rules and standards that courts follow in that country when adjudicating civil suits. The legal realm is divided broadly into substantive and procedural law. Substantive law is that law which defines the contents of rights and obligations between legal subjects; procedural law regulates how those rights and obligations are enforced. These rules govern how a lawsuit or case may be commenced, and what kind of service of process is required, along with the types of pleadings or statements of case, motions or applications, and orders allowed in civil cases, the timing and manner of depositions and discovery or disclosure, the conduct of trials, the process for judgment, various available remedies, and how the courts and clerks are to function.
Couch v Branch Investments (1969) Limited [1980] 2 NZLR 314 is an often cited case regarding the temporary forbearance of taking legal action on enforcing a debt as being consideration to enter into a new contract with the creditor. It reinforces the English case of Callisher v Bischoffsheim (1870) LR 5 QB 449.
Bunny Industries v FSW Enterprises is a decision of the Supreme Court of Queensland.