3.17 Possession-Defined is a type of property law that defines when a person has ownership of an item. This law deals with a variety of types of possession, including actual, constructive, and joint possession. Actual possession means that a person has physical control of the item, while constructive possession means that a person has a legal right to the item, even if they do not have direct physical control. Joint possession is when two or more people share ownership of an item. This type of property law also covers issues such as the presumption of ownership and the transfer of ownership.