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Expired Canadian patentCanada

System and method for providing group communication services

CA 2401322 C · Owner: Maggenti, Mark · Inventors: Crockett, Douglas M.; Rosen, Eric; Maggenti, Mark

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Abstract From the Canadian patent

A system and method for providing group communication services. Each of a plurality of communication devices coverts information signals into data packets suitable for transmission over a data network such as the Internet. , The data packets are transmitted through the data network to a communications manager. The communications manager acts as a configurable switch allowing , communications from any communication device to be routed to the plurality of communication devices. The communications manager further allows users of other communication systems and devices to participate in group communications with each other.

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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 March 2, 2001 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 2, 2001
GrantedFebruary 12, 2013
Term endedMarch 2, 2021
Patent numberCA 2401322 C
Classification (IPC)H04L12/18 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedMarch 2, 2001Patent grantedFeb 12, 2013Term endedMarch 2, 2021

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