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Certainty in English law sets out rules for how judges will interpret, sever or put contracts, trusts and other voluntary obligations into effect. If the terms of the contract are uncertain or incomplete, the parties cannot have reached an agreement in the eyes of the law.〔''Fry v Barnes'' (1953) 2 D.L.R. 817 (B.C.S.C)〕 An agreement to agree does not constitute a contract, and an inability to agree on key issues, which may include such things as price or safety, may cause the entire contract to fail. However, a court will attempt to give effect to commercial contracts where possible, by construing a reasonable construction of the contract.〔''Hillas and Co Ltd v Arcos Ltd'' (1932) 147 LT 503〕 Courts may also look to external standards, which are either mentioned explicitly in the contract〔''Whitlock v Brew'' (1968) 118 CLR 445〕 or implied by common practice in a certain field.〔''Three Rivers Trading Co Ltd v Gwinear & District Farmers Ltd'' (1967) 111 Sol. J. 831〕 In addition, the court may also imply a term; if price is excluded, the court may imply a reasonable price, with the exception of land, and second-hand goods, which are unique. If there are uncertain or incomplete clauses in the contract, and all options in resolving its true meaning have failed, it may be possible to sever and void just those affected clauses if the contract includes a severability clause. The test of whether a clause is severable is an objective test—whether a reasonable person would see the contract standing even without the clause. ==Contract law== While agreement is the basis for all contracts, not all agreements are enforceable. A preliminary question is whether the contract is reasonably certain in its essential terms, or ''essentialia negotii'', such as price, subject matter and the identity of the parties. Generally the courts endeavour to "make the agreement work", so in ''Hillas & Co Ltd v Arcos Ltd'',〔''Hillas & Co Ltd v Arcos Ltd'' () (UKHL 2 )〕 the House of Lords held that an option to buy softwood of "fair specification" was sufficiently certain to be enforced, when read in the context of previous agreements between the parties. However the courts do not wish to "make contracts for people", and so in ''Scammell and Nephew Ltd v Ouston'',〔() 1 AC 251〕 a clause stipulating the price of buying a new van as "on hire purchase terms" for two years was held unenforceable because there was no objective standard by which the court could know what price was intended or what a reasonable price might be.〔nb Sale of Goods Act 1979 s 8(2) stipulates that where a contract for goods is silent on price, a reasonable price must be paid. See also ''May and Butcher Ltd v R'' () (UKHL 2 )〕 Similarly, in ''Baird Textile Holdings Ltd v M&S plc''〔() (EWCA Civ 274 )〕 the Court of Appeal held that because the price and quantity to buy would be uncertain, in part, no term could be implied for M&S to give reasonable notice before terminating its purchasing agreement. Controversially, the House of Lords extended this idea by holding an agreement to negotiate towards a future contract in good faith is insufficiently certain to be enforceable.〔''Walford v Miles'' () 2 AC 128, overturning a decision of Bingham LJ in the Court of Appeal.〕 *''Mercantile Credits Ltd v Harry'' () 2 NSWR 248, failure to specify subject matters *Sale of Goods Act 1979, s 8(2), 9, certainty of terms *''Brown v Gould'' () Ch 53 *''Sudbrook Trading Estate Ltd v Eggleton'' () 1 AC 444 *''Nicolene Ltd v Simmons'' () 1QB 543 *''May & Butcher v The King'' () 2 KB 17, agreement to agree *''Foley v Classique Coaches Ltd'' () 2 KB 1 *''Walford v Miles'' () 2 AC 128, agreement to negotiate *''Pitt v PHH Asset Management Ltd'' () 1 WLR 327 *''Branca v Cobarro'' () KB 854, agreement “Subject to Contract” *''Masters v Cameron'' (1954) 91 CLR 353 *''Carlton Communications and Granada Media plc v The Football League'' () EWHC 1650 (Comm) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Certainty in English law」の詳細全文を読む スポンサード リンク
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