Adverse possession was until 2003 a common law doctrine that enabled a person who had been in factual possession of land owned by another for a specified period of time (12 years), with an intention to possess (often deduced from the acts making up factual possession), without the consent of the owner: see, generally, J A Pye (Oxford) Ltd v Graham. In such circumstances, the owner was barred from obtaining possession of the land, and ownership passed to the trespasser. Frequently, a defence of adverse possession was raised in possession proceedings (brought under Civil Procedure Rules 1998 (CPR 1998), SI 1998/3132, Pt