Bona fide purchaser

A bona fide purchaser is an innocent party who buys property without notice of any other party's competing claim to its title. The doctrine requires three elements: the buyer must act in good faith with no knowledge of a rival claim, must pay real value for the property rather than receive it as a gift, and must lack actual, constructive, or imputed notice of another party's interest. When these conditions are met, a bona fide purchaser can acquire valid title even where the seller obtained the property through fraud, such as reselling something already conveyed to someone else. The original owner keeps a right to sue the fraudulent seller but loses priority against the bona fide purchaser. The doctrine's exact reach varies by jurisdiction and area of law; in England and Wales it developed through equity to protect legal title, while United States patent law applies a broader cutoff that defeats both equitable and legal claims to title.