Which principle states that equity courts may deny relief if the petitioner has not acted in good faith?

The principle that states that equity courts may deny relief if the petitioner has not acted in good faith is known as "Clean Hands." This doctrine suggests that individuals seeking equitable relief must themselves be free of wrongdoing in the matter at hand. It is rooted in the idea that equitable relief should not be granted to someone who has acted unethically or has engaged in misconduct related to their claim.

In practical terms, if a party approaching the court for an equitable remedy is found to have acted in a dishonest or wrongful manner connected to the issue at stake, the court can refuse to assist them. This principle serves to uphold the integrity of the judicial process by ensuring that only those who have acted fairly and in good faith can benefit from equitable remedies.

While other concepts like "Equitable Estoppel" or "Equitable Maxim" pertain to doctrines of equity, they do not specifically address the requirement of good faith in the same way as the Clean Hands principle. "Unclean Hands," though somewhat similar in name, actually refers to the condition that justifies the court's refusal to grant relief rather than being a principle itself. Thus, "Clean Hands" accurately captures the essence of the requirement for good faith in seeking equitable relief.