USA
155 When Mistake of Both Parties as to Written Expression Justifies Reformation
Where a writing that evidences or embodies an agreement in whole or in part fails to express the agreement because of a mistake of both parties as to the contents or effect of the writing, the court may at the request of a party reform the writing to express the agreement, except to the extent that rights of third parties such as good faith purchasers for value will be unfairly affected.
156 Mistake as to Contract Within the Statute of Frauds
If reformation of a writing is otherwise appropriate, it is not precluded by the fact that the contract is within the Statute of Frauds.
157 Effect of Fault of Party Seeking Relief
A mistaken party's fault in failing to know or discover the facts before making the contract does not bar him from avoidance or reformation under the rules stated in this Chapter, unless his fault amounts to a failure to act in good faith and in accordance with reasonable standards of fair dealing.
Topic 1 - The Meaning of Agreements
200 Interpretation of Promise or Agreement
Interpretation of a promise or agreement or a term thereof is the ascertainment of its meaning.
201 Whose Meaning Prevails
1. Where the parties have attached the same meaning to a promise or agreement or a term thereof, it is interpreted in accordance with that meaning.
2. Where the parties have attached different meanings to a promise or agreement or a term thereof, it is interpreted in accordance with the meaning attached by one of them if at the time the agreement was made
- that party did not know of any different meaning attached by the other, and the other knew the meaning attached by the first party; or
- that party had no reason to know of any different meaning attached by the other, and the other had reason to know the meaning attached by the first party.
3. Except as stated in this Section, neither party is bound by the meaning attached by the other, even though the result may be a failure of mutual assent.
202 Rules in Aid of Interpretation
1. Words and other conduct are interpreted in the light of all the circumstances, and if the principal purpose of the parties is ascertainable it is given great weight.
2. A writing is interpreted as a whole, and all writings that are part of the same transaction are interpreted together.
Unless a different intention is manifested,
- where language has a generally prevailing meaning, it is interpreted in accordance with that meaning;
- technical terms and words of art are given their technical meaning when used in a transaction within their technical field.
4. Where an agreement involves repeated occasions for performance by either party with knowledge of the nature of the performance and opportunity for objection to it by the other, any course of performance accepted or acquiesced in without objection is given great weight in the interpretation of the agreement.
5. Wherever reasonable, the manifestations of intention of the parties to a promise or agreement are interpreted as consistent with each other and with any relevant course of performance, course of dealing, or usage of trade.
203 Standards of Preference in Interpretation
In the interpretation of a promise or agreement or a term thereof, the following standards of preference are generally applicable:
- an interpretation which gives a reasonable, lawful, and effective meaning to all the terms is preferred to an interpretation which leaves a part unreasonable, unlawful, or of no effect;
- express terms are given greater weight than course of performance, course of dealing, and usage of trade, course of performance is given greater weight than course of dealing or usage of trade, and course of dealing is given greater weight than usage of trade;
- specific terms and exact terms are given greater weight than general language;
- separately negotiated or added terms are given greater weight than standardized terms or other terms not separately negotiated.
206 Interpretation Against the Draftsman
In choosing among the reasonable meanings of a promise or agreement or a term thereof, that meaning is generally preferred which operates against the party who supplies the words or from whom a writing otherwise proceeds.
207 Interpretation Favoring the Public
In choosing among the reasonable meanings of a promise or agreement or a term thereof, a meaning that serves the public interest is generally preferred.
211 Standardized Agreements
1. Except as stated in Subsection (3), where a party to an agreement signs or otherwise manifests assent to a writing and has reason to believe that like writings are regularly used to embody terms of agreements of the same type, he adopts the writing as an integrated agreement with respect to the terms included in the writing.
2. Such a writing is interpreted wherever reasonable as treating alike all those similarly situated, without regard to their knowledge or understanding of the standard terms of the writing.
3. Where the other party has reason to believe that the party manifesting such assent would not do so if he knew that the writing contained a particular term, the term is not part of the agreement.
212 Interpretation of Integrated Agreement
1. The interpretation of an integrated agreement is directed to the meaning of the terms of the writing or writings in the light of the circumstances, in accordance with the rules stated in this Chapter.
2. A question of interpretation of an integrated agreement is to be determined by the trier of fact if it depends on the credibility of extrinsic evidence or on a choice among reasonable inferences to be drawn from extrinsic evidence. Otherwise a question of interpretation of an integrated agreement is to be determined as a question of law.
Topic 4 - Scope as Affected by Usage
219 Usage
Usage is habitual or customary practice.
220 Usage Relevant to Interpretation
1. An agreement is interpreted in accordance with a relevant usage if each party knew or had reason to know of the usage and neither party knew or had reason to know that the meaning attached by the other was inconsistent with the usage.
2. When the meaning attached by one party accorded with a relevant usage and the other knew or had reason to know of the usage, the other is treated as having known or had reason to know the meaning attached by the first party.
221 Usage Supplementing an Agreement
An agreement is supplemented or qualified by a reasonable usage with respect to agreements of the same type if each party knows or has reason to know of the usage and neither party knows or has reason to know that the other party has an intention inconsistent with the usage.
222 Usage of Trade
1. A usage of trade is a usage having such regularity of observance in a place, vocation, or trade as to justify an expectation that it will be observed with respect to a particular agreement. It may include a system of rules regularly observed even though particular rules are changed from time to time.
2. The existence and scope of a usage of trade are to be determined as questions of fact. If a usage is embodied in a written trade code or similar writing the interpretation of the writing is to be determined by the court as a question of law.
3. Unless otherwise agreed, a usage of trade in the vocation or trade in which the parties are engaged or a usage of trade of which they know or have reason to know gives meaning to or supplements or qualifies their agreement.
223 Course of Dealing
1. A course of dealing is a sequence of previous conduct between the parties to an agreement which is fairly to be regarded as establishing a common basis of understanding for interpreting their expressions and other conduct.
2. Unless otherwise agreed, a course of dealing between the parties gives meaning to or supplements or qualifies their agreement.
227 Standards of Preference with Regard to Conditions
In resolving doubts as to whether an event is made a condition of an obligor's duty, and as to the nature of such an event, an interpretation is preferred that will reduce the obligee's risk of forfeiture, unless the event is within the obligee's control or the circumstances indicate that he has assumed the risk.
Unless the contract is of a type under which only one party generally undertakes duties, when it is doubtful whether
- a duty is imposed on an obligee that an event occur, or
- the event is made a condition of the obligor's duty, or
- the event is made a condition of the obligor's duty and a duty is imposed on the obligee that the event occur, the first interpretation is preferred if the event is within the obligee's control.
In case of doubt, an interpretation under which an event is a condition of an obligor's duty is preferred over an interpretation under which the non-occurrence of the event is a ground for discharge of that duty after it has become a duty to perform.
228 Satisfaction of the Obligor as a Condition
When it is a condition of an obligor's duty that he be satisfied with respect to the obligee's performance or with respect to something else, and it is practicable to determine whether a reasonable person in the position of the obligor would be satisfied, an interpretation is preferred under which the condition occurs if such a reasonable person in the position of the obligor would be satisfied.
1-201. General Definitions.
a) Unless the context otherwise requires, words or phrases defined in this section, or in the additional definitions contained in other articles of [the Uniform Commercial Code] that apply to particular articles or parts thereof, have the meanings stated.
b. Subject to definitions contained in other articles of [the Uniform Commercial Code] that apply to particular articles or parts thereof:
3. "Agreement", as distinguished from "contract", means the bargain of the parties in fact, as found in their language or inferred from other circumstances, including course of performance, course of dealing, or usage of trade as provided in Section 1-303.
12. "Contract", as distinguished from "agreement", means the total legal obligation that results from the parties' agreement as determined by [the Uniform Commercial Code] as supplemented by any other applicable laws.

