• All sections
• H - Electricity
• H04N - Pictorial communication, e.g. television
• H04N 21/25 - Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication or learning user preferences for recommending movies

Patent holdings for IPC class H04N 21/25

Total number of patents in this class: 2752

10-year publication summary

Principal owners for this class