US Patent 7818458 Clipboard for application sharing

A software application can be shared by multiple users. A system clipboard of a first computing system is synchronized with a system clipboard of a second computing system when the user of the second computing system is in control of the shared software application. Information contained in the system clipboard of the first computing system is copied to a state buffer and associated with the user who copied the information. The information is returned to the system clipboard when the associated user regains control of the software application.