Unlike real property, where a covenant in a lease will become binding on the successors and assigns upon the purchase of the asset (ie a house or land), an agreement under English law relating to personal property, such as trade marks, cannot do so. To attempt to solve this problem, coexistence agreements may be used most usually where the fields of activity of each party are completely different. Certainly, under English contract law, the rules relating to privity of contract mean that a successor will not be bound by what his/her predecessor may have agreed with a third party. The predecessor, however, will remain bound by the original agreement. Therefore, if a successor requires any breach by the third party to be addressed, they must pursue the matter through the chain of agreements back to the predecessor and third party. Invariably, in an effort to ‘bind’ the successor/assign,