Abstract: A patent management system that can be applied to a client/server network. The system enables client ends to connect to the server and operate through single PC operations off-line. By using the system, clients can execute data uploading to the system on-line following completion of single PC operations off-line, and the system automatically processes data comparisons and searches for instant data updates. The disclosed system, designed for internal patent data, aims at improving relevant operation flows and process patterns in conventional patent applications to achieve instant management of a patent database.