adverse possession

Claim to the title of a private (non-governmental or non-crown) property by an occupant who has notoriously, openly, and visibly occupied the property continuously for a certain period (commonly 12 to 20 years). Adverse possession may be claimed for a property that has been abandoned, or in opposition of the rights of its actual (legal) owner who does not challenge its possession by the claimant. See also color of title.