
The clean hands doctrine, also known as the unclean hands or dirty hands doctrine, is a legal doctrine that can be used as a defense by a defendant to argue that the plaintiff is not entitled to equitable relief because they are acting unethically or in bad faith concerning the subject of the complaint. This affirmative defense requires the defendant to prove that the plaintiff is not acting in good faith or has engaged in wrongful conduct directly related to the matter in question. While the doctrine is typically used by defendants, it can also be invoked by a plaintiff to prevent the defendant from raising another equitable defense. The clean hands doctrine is often applied in contract disputes, fraud cases, intellectual property litigation, and family law matters, but it does not apply to cases seeking monetary damages.
| Characteristics | Values |
|---|---|
| Type of legal doctrine | Defence to a complaint |
| Who can use it? | Defendant or plaintiff |
| When can it be used? | When the defendant can prove the plaintiff has acted unethically or in bad faith concerning the subject of the complaint |
| When can't it be used? | When the plaintiff's conduct is unrelated to the claim, in cases seeking damages or monetary compensation, or when the plaintiff's general immoral character is in question |
| What does it mean? | "He who comes into equity must come with clean hands" |
| What does it aim to do? | Prevent a party from enforcing a contract if the party was guilty of fraud, deceit, or unconscionable conduct |
| What does the defendant have to prove? | That the plaintiff misled them or did something wrong regarding the matter |
| What does the plaintiff have to prove? | That the defendant was misled or did something wrong regarding the matter |
| What does it have to do with moral character? | It is specific conduct, not a person's character, that is in question |
| What are some examples of its use? | In family law, contract law, fraud cases, intellectual property litigation, antitrust cases, and employment discrimination cases |
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What You'll Learn

The clean hands doctrine is an affirmative defence
The clean hands doctrine, also known as the unclean hands or dirty hands doctrine, is a legal doctrine that operates as an affirmative defence for the defendant. It is the notion that a party asking for a judgment cannot have the court's help if they have done anything unethical concerning the subject of the lawsuit. In other words, a person who brings a lawsuit or motion and seeks equitable relief from a court must be innocent of wrongdoing or unfair conduct related to the subject matter of their claim.
The doctrine is often expressed as "those seeking equity must do equity" or "he who comes to equity must come with clean hands". The defendant must prove that the plaintiff's misconduct is directly related to the subject matter of the case and that they are acting unethically or in bad faith. The plaintiff's immoral character or unrelated corrupt actions are not enough to justify the defence. The doctrine is typically used in contract disputes, fraud cases, intellectual property litigation, and family law matters.
The clean hands doctrine is invoked when a party seeking equitable relief or claiming a defence based on equity has themselves violated a duty of good faith or acted unconscionably in connection with the same subject matter out of which they claim a right to relief. It is a powerful defence, but courts will reject it under certain circumstances, such as if the plaintiff's misconduct is deemed minor, unintentional, or unrelated to the case.
The doctrine is not a blanket remedy and is inapplicable to legal damages claims (monetary compensation). A plaintiff can also use the clean hands doctrine to prevent the defendant from raising another equitable affirmative defence.
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The plaintiff must be acting in bad faith
The clean hands doctrine, also known as the unclean hands or dirty hands doctrine, is a legal doctrine that operates as a defence to a complaint. It is a common affirmative defence that can be used by defendants to argue that the plaintiff has no right to obtain relief because they have acted unethically or in bad faith concerning the subject matter of the complaint.
The defendant must prove that the plaintiff's misconduct is directly related to the subject matter of the case. The plaintiff's wrongdoing must have given them an unfair advantage or harmed the defendant. The misconduct must involve fraud, deceit, unconscionability, or another act that violates principles of fairness.
The clean hands doctrine is often stated as "those seeking equity must do equity" or "he who comes into equity must come with clean hands". This means that a person who brings a lawsuit or motion and seeks equitable relief from a court must be innocent of wrongdoing or unfair conduct related to the subject matter of their claim. The doctrine is a self-imposed ordinance that closes the doors of a court of equity to one tainted with inequitableness or bad faith relative to the matter in which he seeks relief.
The unclean hands defence is typically used in contract disputes, fraud cases, intellectual property litigation, and family law matters. It is not a blanket remedy and is inapplicable to legal damages claims (monetary compensation).
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The defence can be used in family law issues
The clean hands doctrine, also known as the dirty hands doctrine, is a legal doctrine that operates as a defence to a complaint. The doctrine is derived from the maxim, "He who comes into equity must come with clean hands". This means that a person who brings a lawsuit or motion and seeks equitable relief from a court must be innocent of any wrongdoing or unfair conduct related to the subject matter of their claim. In other words, the plaintiff must be acting in good faith.
The clean hands doctrine can be used in family law issues, particularly in issues regarding financial misconduct. For example, during a marriage or separation, if one spouse conceals assets or misappropriates marital property, the other spouse can invoke the clean hands doctrine. As a result, the first spouse is likely to receive less than their fair share when the property is divided at divorce. The doctrine can also be used in child support and property division cases, where certain fraudulent activity is a factor.
In family law matters, it is important to note that the clean hands doctrine does not apply to cases seeking damages, i.e., monetary awards. Additionally, the doctrine is not a blanket remedy and requires specific conduct to be proven, rather than just the moral character of the other party. For example, in cases of child protection, the accused might receive disclosure of sensitive information, which could trigger retaliatory violence if accessed by an abusive parent. Therefore, the defence cannot introduce into evidence a statement made by the accused to a person in authority.
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It can be used in breach of contract cases
The clean hands doctrine is a legal doctrine that operates as a defense to a complaint. It is derived from the maxim, "He who comes into equity must come with clean hands." In other words, a person who brings a lawsuit or motion and seeks equitable relief from a court must be innocent of any wrongdoing or unfair conduct related to the subject matter of their claim. This doctrine is commonly used in breach of contract cases, where one party accuses another of breaching an agreement but has also acted in bad faith.
In such cases, the defendant can assert the clean hands doctrine as a defense, arguing that the plaintiff is not entitled to receive equitable relief because they are acting unethically or in bad faith concerning the subject of the complaint. For example, if a seller fraudulently induces a customer to sign a contract and then sues the customer to recover payment, the defendant (the customer) can use the clean hands doctrine to argue that the plaintiff (the seller) lost their right to sue due to their fraudulent inducement.
To successfully use the clean hands doctrine as a defense in breach of contract cases, the defendant must prove specific key elements. Firstly, they must demonstrate that the plaintiff's misconduct is directly related to the subject matter of the case and not just general immoral character. This could include providing evidence of the plaintiff's unclean hands in relation to the transaction or affecting the equitable relations between the parties involved. Secondly, the defendant must show that the plaintiff misled them or did something wrong regarding the matter in question. This could be either legal or moral in nature.
It is important to note that the clean hands doctrine is not a blanket remedy and may have limited application. It is typically applied selectively by courts, and a legal expert is best suited to determine its applicability in a given case. Additionally, this doctrine cannot be used in cases resulting in legal damages, i.e., monetary awards or compensation.
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The plaintiff's general immoral character is irrelevant
The clean hands doctrine is a legal doctrine that operates as a defence to a complaint. It is sometimes expressed as "those seeking equity must act in equity" or "he who comes into equity must come with clean hands". The doctrine is based on the idea that a party asking for a judgment cannot have the court's help if they have done anything unethical concerning the subject of the lawsuit.
The clean hands doctrine is not a blanket remedy and is inapplicable to legal damages claims (monetary compensation). It is important to note that the plaintiff can also use the unclean hands defence. The plaintiff could argue that the defendant is not entitled to another type of defence due to their unclean hands.
Research has shown that legal decision-making can be influenced by legally irrelevant factors, and even professional judges are not immune to its influence. For example, a plaintiff's previous conviction can affect legal decision-making, even if it is unrelated to the current case. However, judges generally believe that they are capable of ignoring irrelevant information and that they are objective and impartial in their decision-making.
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Frequently asked questions
The clean hands law, also known as the clean hands doctrine or dirty hands doctrine, is a legal doctrine that operates as a defense to a complaint.
The defendant must prove that the plaintiff has acted unethically or in bad faith concerning the subject of the complaint. If the defendant is successful, the plaintiff's complaint will be dismissed.
"Unclean hands" can include fraud, deceit, unconscionability, or general immoral or corrupt conduct. However, the plaintiff's unrelated corrupt actions and general immoral character are not enough to justify the defense.
The clean hands law is typically used in contract disputes, fraud cases, intellectual property litigation, and family law matters.
Yes, the clean hands law can also be used by the plaintiff to prevent the defendant from raising another equitable defense.










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