A method, apparatus, system, and signal-bearing medium that, in an embodiment, determine whether a user at a first client has a chat session already active at a second client with a third client in response to a request for initiation of a chat session for the user at the first client. If the user does...http://www.google.es/patents/US7519730?utm_source=gb-gplus-sharePatente US7519730 - Copying chat data from a chat session already active
Copying chat data from a chat session already active
