User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail

Introduced: January 2022

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

IPC defines codes here since 2022.

Child Classifications

Navigate with arrow keys, Enter to open

H04L 51/02 using automatic reactions or user delegation, e.g. automatic replies or chatbot-generated messages since 2022 IPC+CPC Available in IPC and CPC
H04L 51/04 Real-time or near real-time messaging, e.g. instant messaging [IM] since 2022 IPC+CPC Available in IPC and CPC
H04L 51/06 Message adaptation to terminal or network requirements since 2022 IPC+CPC Available in IPC and CPC
H04L 51/07 characterised by the inclusion of specific contents since 2022 IPC+CPC Available in IPC and CPC
H04L 51/21 Monitoring or handling of messages since 2022 IPC+CPC Available in IPC and CPC
H04L 51/42 Mailbox-related aspects, e.g. synchronisation of mailboxes since 2022 IPC+CPC Available in IPC and CPC
H04L 51/48 Message addressing, e.g. address format or anonymous messages, aliases since 2022 IPC+CPC Available in IPC and CPC
H04L 51/52 for supporting social networking services since 2022 IPC+CPC Available in IPC and CPC
H04L 51/56 Unified messaging, e.g. interactions between e-mail, instant messaging or converged IP messaging [CPM] since 2022 IPC+CPC Available in IPC and CPC
H04L 51/58 Message adaptation for wireless communication since 2022 IPC+CPC Available in IPC and CPC