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Expired Canadian patentCanada

Rtp payload format

CA 2786809 C · Owner: Microsoft Technology Licensing, Llc · Inventors: Alkove, James M.; Klemets, Anders E.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A data stream is encrypted to form encryption units that are packetized into RTP packets. Each RTP packet includes an RTP packet header one or more payloads of a common data stream and a RTP payload format header for each payload and including for the corresponding encryption units a boundary for the payload. The payload can be one or more of the encryption units or a fragment of one of the encryption units. The encryption units are reassembled the using the payloads in the RTP packets and the respective boundary in the respective RTP payload format header. The reassembled of encryption units are decrypted for rendering. Each RTP payload format header can have attributes for the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed June 1, 2004 and granted December 9, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 1, 2004
GrantedDecember 9, 2014
Term endedJune 1, 2024
Patent numberCA 2786809 C
Classification (IPC)H04N21/23 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJune 1, 2004Patent grantedDec 9, 2014Term endedJune 1, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.