Defenses to Contract Enforcement Flashcards
status quo ante
situation existing before the contract was formed
void ab initio
from its inception
Defenses based on Lack of Capacity to Contract
- Infancy
- Mental Illness or Defect
- Intoxication
Defenses related to Defects in Mutual Assent
- Mistake
- Misrepresentation
- Duress
- Undue Influence
- Unconscionability
mistake
A belief not in accord with the facts
Define Fact
A fact is a past or present state of things—something that actually exists or an event or circumstance that has occurred.
Define Promises
Promises are commitments to do or not do something in the future.
Define Predictions
Predictions are expectations about a future occurrence or state of things.
Define Opinions
Opinions are personal views, attitudes, or professional appraisals about present circumstances or the future, or beliefs or judgments based on grounds insufficient to produce complete certainty.
Defense of Mutual Mistake
Both parties were mistaken about a fact at the time of contract formation.
Defense of Unilateral Mistake
Only one party was mistaken about a fact at contract formation.
Four types of Mistake
- Mistake of Opinion
- Mistake of Prediction
- Mistake of Fact
- Mistake of Law
Defense of mistake applies to…
Assertions of fact, but not to promises, predictions, or opinions.
Capacity to Contract (1)
(1) No one can be bound by contract who has not legal capacity to incur at least voidable contractual duties. Capacity to contract may be partial and its existence in respect of a particular transaction may depend upon the nature of the transaction or upon other circumstances.
Capacity to Contract (2)
(2) A natural person who manifests assent to a transaction has full legal capacity to incur contractual duties thereby unless he is
(a) under guardianship, or
(b) an infant, or
(c) mentally ill or defective, or
(d) intoxicated.
Infants
Unless a statute provides otherwise, a natural person has the capacity to incur only voidable contractual duties until the beginning of the day before the person’s eighteenth birthday.
Mental Illness or Defect
(1) A person incurs only voidable contractual duties by entering into a transaction if by reason of mental illness or defect
(a) he is unable to understand in a reasonable manner the nature and consequences of the transaction, or
(b) he is unable to act in a reasonable manner in relation to the transaction and the other party has reason to know of his condition.
Two tests courts use to determine mental illness
- Cognitive Tes 2. Motivational or Affective Test
Define Cognitive Test
A person is unable to understand in a reasonable manner the nature and consequences of the transaction
Define Motivational or Affective Test
A person is unable to act in a reasonable manner in relation to the transaction and the other party has reason to know of his condition.
Intoxicated Persons
A person incurs only voidable contractual duties by entering into a transaction if the other party has reason to know that by reason of intoxication
(a) he is unable to understand in a reasonable manner the nature and consequences of the transaction, or
(b) he is unable to act in a reasonable manner in relation to the transaction.
Void Contracts
Cannot be enforced at all. (void ab initio, “from its inception”)
Voidable Contracts
A contract is voidable, when the party protected by the defense has the power to affirm or avoid the agreement, which is otherwise valid and enforceable.
When Mistake of Both Parties Makes a Contract Voidable
(1) Where a mistake of both parties at the time a contract was made as to a basic assumption on which the contract was made has a material effect on the agreed exchange of performances, the contract is voidable by the adversely affected party unless he bears the risk of the mistake under the rule stated in § 154.
(2) In determining whether the mistake has a material effect on the agreed exchange of performances, account is taken of any relief by way of reformation, restitution, or otherwise.

