Concept
Claim of Right Defense
Model Penal Code theft
Claim of Right Defense
Section 223.1(3) of the Model Penal Code gives a person prosecuted for theft three ways to defeat the charge by pointing to what the person believed about the property. The Code labels each an affirmative defense, which means the actor raises it as a ground for acquittal.1 Where the defense sits matters as much as the label. Section 223.1(1) already treats every manner of theft in Article 223 as one offense, covering what older law divided into larceny, embezzlement, false pretenses, receiving stolen property, and extortion.2 Paragraph (3) appears among the provisions that apply to theft generally and not inside any one route. The result is a single claim of right defense that reaches every theft crime in the Article, so the same questions get asked whether the charge rests on a taking, a deception, or a threat.3
The idea behind the defense is older than the Code. Larceny at common law required an intent to steal, and a taker who honestly believed the property was his own, or that he had a right to take it, lacked that intent and was not guilty of larceny.4 The common-law rule was generous about the quality of the belief, because a mistake of fact or of law negated liability even when it was unreasonable.5 The Code keeps that idea and changes its packaging in two ways. It lifts the defense out of larceny and applies it to all theft, and it explains the defense through culpability: an actor who honestly claims the property does not know that it belongs to another, so the actor lacks the mental state the offense requires on that element.6 The Code also writes in a defense for mistakes of law and a separate defense for goods offered for sale.7
The first two paragraphs ask about the actor's honest belief regarding ownership or entitlement. The third covers a narrower situation, goods that the owner has put up for sale, where taking before paying is not the misappropriation theft punishes. The text also shows where the law demands a reasonable belief: only the third path uses the word reasonably, and only for the branch about the owner's consent, so the first two paths turn on what the actor actually believed.9
The defense rests on a judgment about culpability that critics contest, and each side of the argument explains why the Code drew the defense as it did. The argument for the defense is that people who take only property they believe themselves entitled to pose little threat to the property system and show no flaw of character worse than ignorance.10 Theft punishes the purposeful misappropriation of what belongs to someone else, and an actor who sincerely thinks the property is his own, or that he may take it, is not doing that, so a conviction would punish the mistake. The argument against is that such a rule comes close to approving lawless reprisal as a way to settle grievances, real or imagined, because disputed claims are better resolved in a court than by violence or stealth.11 That objection has the most force when an alleged creditor uses force to collect, and a growing body of authority refuses the defense in that setting.12 The Code sides with the defense but builds the limits into its wording. A belief is a private mental state that only the actor can describe, so every path turns on honesty or on a stated set of circumstances, which keeps an actor from escaping liability by announcing a grievance after the fact.
The outward conduct is identical in the two versions, and the actor's belief about the property decides the outcome. The same pattern holds on every path. The proof of the taking, deception, or threat stays constant, and the defense asks what the actor believed about the right to do it. The next three sections take the paragraphs in order. The restitution defense in the previous section is a separate provision confined to three of the extortion paragraphs, while this subsection is the general defense that the Code applies to theft as a whole.
Unaware Property Belonged to Another
The first of the three paths in § 223.1(3) applies the Code's ordinary culpability logic to ownership. Paragraph (a) makes it an affirmative defense to theft that the actor was unaware that the property or service was that of another.14 Every route to theft in Article 223 depends on the property being another's, so an actor who honestly does not realize that fact has not misappropriated anything he knows to be someone else's. That is the situation the unaware property was another's defense covers: an honest mistake about whose property it is, such as walking off with a look-alike item in the belief that it is one's own. The mistake concerns a fact, namely who holds an interest in the item, and the next section takes up the different case of an actor who knows the facts but believes he has a right to act.
The defense exists because culpability must reach each material element of an offense, and ownership is one of them. A person who believes the item is his own lacks the state of mind that theft punishes toward the element that the property belongs to another, and the common law reached the same result by saying that such a taker does not know the property is another's.15 The common law was also generous about the quality of the belief, since a mistake negated liability even when it was unreasonable.16 The text of paragraph (a) asks only whether the actor was unaware, and it contains no word like reasonably, so an honest but careless mistake qualifies.17 Reasonableness still matters in practice, because the actor is the only direct witness to his own belief, and a factfinder deciding whether the actor was truly unaware will discount an account that no sensible person would credit. That discounting is the practical check on an actor who announces a mistake only after being caught.
In the first two versions the restaurant, the coat, and the outward taking are the same, and knowledge that the coat is another's decides the result. The third version shows that the question is asked about the actor's awareness when the conduct occurs, so a mistake protects only for as long as it lasts.18 Students lose points here when they ask whether the mistake was reasonable, because the paragraph turns on whether the actor knew the property was another's.
Honest Claim of Right
Paragraph (a) of § 223.1(3) asks whether the actor knew the property was another's. Paragraph (b) addresses the actor who understands whose property it is and still believes the law entitles him to take it or deal with it. It makes it an affirmative defense to theft that the actor "acted under an honest claim of right to the property or service involved or that he had a right to acquire or dispose of it as he did."20 The first branch looks to what the actor honestly believed about his own entitlement. The second branch carries the same idea from the thing to the transaction, because a person who has a right to acquire or dispose of property in the way he did is misappropriating nothing. Since § 223.1(3) governs every route to theft in Article 223, the defense is available whether the charge rests on a taking, a deception, or a threat.21
The operative word is honest. The defense asks what the actor sincerely believed, and a belief can be mistaken, even unreasonable, and still be sincere. The reason lies in what theft punishes. The offense condemns the purposeful misappropriation of what belongs to someone else, so the culpability it demands has to reach the fact that the property is another's. An actor who sincerely believes he is entitled to the property lacks that culpability on that element, and a conviction would punish only his error about entitlement.22 The standard illustration is a man who wrongly believes that Stan owes him Stan's red Maserati and takes the car. George is not guilty, because he acted under a claim of right that was mistaken but sincere.23
The common law reached the same place by a different description. Courts said that a claim of right negated the specific intent, the intent to steal, that larceny required, and they were generous about the quality of the belief: a mistake of fact or law negated liability however unreasonable it was.24 The more accurate account, and the one the Code adopts, is that such an actor does not know the property belongs to another and so lacks the required culpability on that material element.25 The difference is practical. Under the Code the defense is a named provision that applies to all theft crimes, so it does not depend on whether a particular route to theft is classed as a specific-intent offense.26
The defense reaches mistakes of law as well as mistakes of fact, and that scope departs from the familiar maxim that ignorance of the law is no excuse. The maxim rests chiefly on the ease with which ignorance of the law can be fabricated, which would tempt people to break the law and plead ignorance afterward.27 That worry gives way when the mistake negates a state of mind the offense requires, and a belief that the law entitles one to take or dispose of property is such a mistake. Most jurisdictions therefore treat an honest mistake of law about entitlement as a valid claim of right, and the Code recognizes the mistake-of-law version of the defense expressly.28 In People v. Navarro a defendant may have held a good-faith but unreasonable belief that lumber at a construction site belonged to him, and the court held that if he sincerely believed he was entitled to it, he lacked the mental state for petty theft. That result is an exception to the ordinary rule that an honest but unreasonable mistake does not excuse, and it exists because the mistake negates the mental state the offense demands.29
Because belief is a private mental state, the defense is policed through proof of sincerity. The factfinder weighs the actor's account against the surrounding circumstances, and a claim that surfaces only after arrest, or that no sensible person would credit, is evidence that no belief existed when the property was taken. Reasonableness therefore enters as evidence about honesty and is not a separate element of the defense.
The two Georges take the same car in the same way, and the sincerity of the belief at the moment of the taking decides the result. That belief is also a matter the jury must be allowed to consider. In Allen v. State a Maryland appellate court held that once the evidence fairly raises an honest-belief defense, the trial court may not refuse a requested instruction on it, and the court rejected the argument that the general instruction on the elements of theft, including the mental state, is enough.30
The same sincerity test governs the most familiar use of the defense, which is taking money the actor believes he is owed. The traditional view treats a defendant who honestly believes a debt exists, even if none does, as lacking the intent to steal.31 Debt collection is also where courts grow wary, because a disputed claim is better resolved in court than by self-help. A growing body of authority refuses the defense when an alleged creditor uses force to collect, and the claim-of-right rule has been breaking down most visibly in that setting.32 The clearest applications of paragraph (b) therefore involve a sincere belief about the very property, as in the Maserati case. Students lose points on this paragraph when they dismiss a mistaken claim as no claim at all, because a wrong claim can still be an honest one, and the analysis ends only when the claim is shown to be a pretext.33
Property Exposed for Sale
Paragraphs (a) and (b) of § 223.1(3) both turn on what the actor believed about ownership or entitlement. Paragraph (c) covers a third kind of actor, one who knows the property belongs to someone else and claims no right to keep it for nothing, but who takes it from a place where the owner is offering it to the public for a price. The paragraph makes it an affirmative defense that the actor "took property exposed for sale, intending to purchase and pay for it promptly, or reasonably believing that the owner, if present, would have consented."35 The sentence has two parts. The threshold is that the property was exposed for sale, and two alternative states of mind then supply the defense: an intent to purchase and pay promptly, or a reasonable belief that the owner would have consented.36 Like the other paragraphs of § 223.1(3), this one is an affirmative defense that reaches theft by any route in Article 223.37
The reason for carving out this setting lies in what the owner has already done. Merchandise on a shelf, a table, or a roadside stand is offered to the public on the understanding that payment will follow, so a taker who intends to complete the exchange promptly is accepting the owner's own terms. The owner ends up with the asking price, which means the actor has not set out to deprive the owner of the value of the goods, and the purposeful misappropriation that theft punishes is missing. The second branch rests on the same footing: when the owner is absent and the circumstances make clear that the owner would have agreed to the taking, the actor has not acted against the owner's will. Authority on the common-law version of the problem points the same way, treating an intent to pay, joined with the ability to do so, as a defense when the owner has offered the property for sale.38
The two branches use different standards, and the text builds the difference in. Intent to purchase and pay promptly describes the actor's own purpose, and nothing in the language asks whether a reasonable person would have shared it. The belief that the owner would have consented carries the word reasonably, so an honest but unfounded belief does not qualify.39 Each standard fits the way the claim can be checked. A plan to pay promptly is followed by an act that tests it, because the money goes into the box or onto the counter or it does not, and authority on the common-law defense demands a substantial ability to pay, since a bare hope of paying does not count.40 A belief about consent leaves no such trace, and the one person who could contradict it is absent. The Code therefore anchors that belief to the circumstances, such as a standing practice between the parties or a sign inviting customers to take now and settle later. Paragraphs (a) and (b) ask only about honesty, so this paragraph stands apart in requiring reasonableness for one of its two branches.
The first two versions differ only in the actor's purpose about payment, and the last pair differs only in whether the belief rests on anything outside the actor's own head. In every version the property was exposed for sale, which is the fact paragraph (c) requires before either state of mind matters.
That threshold keeps the paragraph from becoming a general defense of intended repayment. Outside the setting of goods offered for sale, an intent to pay for the property or to replace it later does not normally save the actor, and replacing the property afterward, even with similar property, does not defeat prosecution.41 The explanation follows from the reason the defense exists. Only an owner who has offered a thing for a price has agreed in advance to the exchange the actor proposes to complete, and property that is not for sale carries no such offer, so a plan to pay for it is a proposal the owner never invited.
Students lose points here when they carry the idea of intended repayment into every taking, because paragraph (c) reaches only property exposed for sale. The sequence of analysis follows from that. The first question is whether the owner was offering the property for a price, and only then does the actor's intent to pay promptly, or the reasonableness of the belief in consent, decide the defense.