Real Property Law
Property rights are rights over things enforceable against all other persons. By contrast, contractual rights are rights enforceable against particular persons. Property rights may, however, arise from a contract; the two systems of rights overlap. In relation to the sale of land, for example, two sets of legal relationships exist alongside one another: the contractual right to sue for damages, and the property right exercisable over the land. More minor property rights may be created by contract, as in the case of easements, covenants, and equitable servitudes.
A separate distinction is evident where the rights granted are insufficiently substantial to confer on the nonowner a definable interest or right in the thing. The clearest example of these rights is the license. In general, even if licenses are created by a binding contract, they do not give rise to property interests.