Day 2: The Undo Button — Defenses to Formation and the Statute of Frauds

Welcome Back to Law School

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Welcome back to Law School. Yesterday, we built the machine: Offer, Acceptance, and Consideration. We established that if you have a “meeting of the minds” and a “bargained-for exchange,” a contract is born.

But today, we look at the “Undo” button. Just because a contract was formed doesn't mean it’s enforceable. There are times when the law looks at a perfectly good-looking agreement and says, “Actually, no. Something went wrong in the basement of this deal.”

Today’s lecture covers the Defenses to Formation. These are the legal reasons a party can walk away from a deal without being sued for breach. We will categorize these into three buckets: Capacity, Flaws in the Bargaining Process, and the Statute of Frauds.

HealthVoid or voidable?

CapacityMinor, mental incapacity, or intoxication?

ProcessMistake, fraud, duress, undue influence, unconscionability?

MY LEGSDoes Statute of Frauds require writing?

UCC 2-201Does an exception save the deal?

I. The “Health” of the Deal: Void vs. Voidable

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Before we dive into specific defenses, you must understand the distinction between a contract that is Void and one that is Voidable. This is a favorite trick on the Bar Exam.

Void Contracts

These were never contracts to begin with. The law treats them as if they never existed. Usually, this applies to contracts for illegal acts, such as a contract to hire a hitman. You cannot “fix” a void contract.

Voidable Contracts

These are valid contracts, but one party has the option to back out. If they choose to stay in, the contract remains valid. If they choose to leave, they can “void” it. This usually applies to minors or people who were tricked.

Void or Voidable Classifier

Select the situation

A contract for an illegal act is void and cannot be fixed.

II. Bucket One: Lack of Capacity

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The law assumes that for a contract to be fair, both parties must have the “legal power” to understand what they are doing. If you lack capacity, the contract is generally voidable at your option.

1. Minors — Infancy

In almost every state, anyone under the age of 18 lacks the capacity to contract.

The Rule: A minor can disaffirm, meaning cancel, a contract at any time before they turn 18, or within a reasonable time after.

The “Necessaries” Exception: This is the only way a minor is held liable. If a minor buys “necessaries,” such as food, shelter, clothing, or medical care, they must pay the fair market value for what they used. Not the contract price, but the fair price. This prevents people from refusing to rent an apartment to a 17-year-old out of fear they won't get paid.

2. Mental Incapacity

If a person’s mind is so impaired that they cannot understand the nature and consequences of the transaction, the contract is voidable.

Note: If a person has been “adjudicated incompetent” by a court and had a guardian appointed, any contract they sign is Void from the start.

3. Intoxication

This is a very high bar. You cannot just have “had a few drinks.” You must be so intoxicated that you didn't understand what you were doing, and the other party must have had reason to know you were that drunk.

Capacity Defense Selector

Select the capacity issue

A minor can usually disaffirm a luxury-item contract.

III. Bucket Two: Flaws in the Bargaining Process

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This is where things get “messy.” This bucket is about how the deal was made. If the process was dirty, the contract is often voidable.

1. Mistake

Mistake is not about “regretting” a deal. It's about a factual error regarding a basic assumption of the contract.

Mutual Mistake: Both parties are wrong about a central fact.

Case Study: The Two Ships Peerless. A buyer and seller agree to ship cotton on the ship “Peerless.” Unbeknownst to them, there are two ships named Peerless. One sails in October, one in December. The buyer meant one, the seller meant the other. Because there was no “meeting of the minds” on a material term, the contract is Void.

Unilateral Mistake: Only one party is wrong. Generally, a unilateral mistake is not a defense. The law rewards the party who was paying attention. The exception is when the non-mistaken party knew or had reason to know of the other party's mistake, such as a contractor accidentally bidding $10,000 instead of $100,000, and the homeowner knows that's an impossible price.

2. Misrepresentation and Fraud

If you lie to get someone to sign, the law won't help you collect.

Fraud in the Inducement: You lie about the subject of the deal. “This car has never been in a wreck,” when it has. The contract is voidable by the victim.

Fraud in the Factum, or Execution: You trick someone into signing something they don't even know is a contract. “Sign here to receive your free pizza,” but it’s actually a deed to their house. This is Void.

3. Duress and Undue Influence

Physical Duress: “Sign this or I'll break your legs.” The contract is Void.

Economic Duress: One party makes an improper threat, usually a breach of an existing contract, and the victim has no reasonable alternative but to agree.

Undue Influence: This involves a “special relationship,” like a caregiver and an elderly patient. The dominant party uses their position of trust to unfairly persuade the weaker party to sign a deal.

4. Unconscionability

This is the “Shock the Conscience” defense. A court may refuse to enforce a contract if it is so one-sided and unfair that it would be an injustice to uphold it. This often happens with “Adhesion Contracts,” meaning take-it-or-leave-it forms with tiny print.

Bargaining Flaw Classifier

Select the formation flaw

Mutual mistake about a material fact can defeat the contract.

IV. Bucket Three: The Statute of Frauds

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This is the most tested topic in Day 2. Most people think “a verbal contract isn't worth the paper it's written on.” That is incorrect. Most verbal contracts are perfectly valid.

However, there is a specific list of contracts that must be in writing to be enforceable. We use the mnemonic MY LEGS.

MMarriage

Contracts made in consideration of marriage, such as “If you marry me, I'll give you my beach house.” This does not apply to the promise to marry itself.

YYear

Contracts that cannot possibly be performed within one year from the date the contract is made. Trap: if performance within a year is possible, even unlikely, SOF does not apply. A contract “for life” is not within SOF because you could die tomorrow.

LLand

Any contract involving an interest in real property, such as selling a house, an easement, or a 2-year lease.

EExecutor

A promise by an executor of an estate to pay the estate's debts out of their own pocket.

GGoods $500+

Under UCC 2-201, any sale of goods for $500 or more must be in writing.

SSuretyship

A promise to pay the debt of another person: “If he doesn't pay you, I will.”

What Counts as a “Writing”?

The writing does not need to be a formal contract. It can be a cocktail napkin, an email, or a series of text messages. It must:

Identify the parties.
Identify the subject matter.
State the essential terms: Price for Common Law, Quantity for UCC.
Be signed by the party to be charged. This means the person you are suing must have signed it. If I sign a letter and you don't, I can't sue you, but you can sue me.

MY LEGS Statute of Frauds Checker

Select the contract type

This falls within MY LEGS and generally requires a writing.

Writing Requirement Checker

Select the writing issue

A formal contract is not required; an informal signed writing can satisfy SOF.

V. UCC 2-201: The Exceptions to the SOF

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The UCC, Sales of Goods, is more flexible than the Common Law. Even if there is no signed writing for a $500+ sale, the contract might still be enforceable if:

Specially Manufactured Goods

The seller has already started making a custom item that can't be sold to anyone else, such as T-shirts with your specific logo.

Merchant’s Confirmatory Memo

One merchant sends a written confirmation to another. If the receiver doesn't object in writing within 10 days, it counts as a “signed writing” against them—even if they never signed it.

Part Performance

If the buyer has already paid for part of the goods, or the seller has already delivered part of the goods, the contract is enforceable up to the amount already performed.

UCC 2-201 Exception Selector

Select the UCC exception scenario

Specially manufactured goods may make the contract enforceable despite no signed writing.

VI. Summary Checklist for Day 2

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When analyzing a defense, ask these questions in order:

Capacity: Is someone a minor or incapacitated? Voidable.
Process: Was there a lie, meaning Fraud, a threat, meaning Duress, or a big mistake, meaning Mutual Mistake?
Statute of Frauds: Is the contract in the MY LEGS category?
The Writing: If it is in MY LEGS, is there a writing signed by the defendant?
Exceptions: If no writing, does a UCC exception, such as specially manufactured goods or 10-day memo, save the deal?

Void = never a contract Voidable = one party may cancel Minor can usually disaffirm Necessaries require fair value MY LEGS requires writing UCC quantity is essential Capacity can override SOF

The Law School Challenge

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A 17-year-old YouTuber signs a contract to buy a $1,200 professional camera rig, a “good.” They pay $200 down and take the camera home. Two weeks later, they decide they want to be a professional chef instead. They return the camera and ask for their $200 back.

Can they void the contract? YES. Under the Infancy Defense, a minor can disaffirm a contract.
Is a camera a “Necessary”? NO. It’s a luxury item for a hobby or career.
What if the minor lied and said they were 21? In most states, they can still void the contract, though they might be liable for any damage they did to the camera.
Does the Statute of Frauds apply? YES. It’s a sale of goods for $500+. Since the minor took delivery of the camera, the “Part Performance” exception would have made the verbal deal enforceable if they were an adult. But because they are a minor, Capacity overrides the SOF.

Challenge Analyzer

Select the issue

Yes. A minor can generally disaffirm under the infancy defense.

Are you ready for Day 3: Interpreting the Contract? We will tackle the Parol Evidence Rule, meaning what happens when the written contract says one thing, but you claim the person said something else.

Interactive Study Tools

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Flashcard Console

Tap the card to flip between prompt and answer.

What is a void contract?

Checkpoint Quiz

Which Statute of Frauds category covers a promise to pay another person’s debt?

Select an answer.

Issue Spotter Scratchpad

Save session notes while reviewing. Notes stay in this browser session.

No saved notes yet.

One-Screen Day 2 Attack Framework

For any defense-to-formation problem, first classify the contract as void or voidable. Then test capacity: minority, mental incapacity, adjudicated incompetence, and intoxication. Next, examine bargaining-process defects: mutual mistake, unilateral mistake with knowledge, fraud, duress, undue influence, and unconscionability. Then apply the Statute of Frauds using MY LEGS. If a writing is required, check whether it identifies the parties, subject matter, essential terms, and is signed by the party to be charged. If goods are involved, test UCC 2-201 exceptions: specially manufactured goods, merchant confirmatory memo, and part performance.