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Expired Canadian patentCanada

System and method for interrupt control on a handheld device

CA 2736040 C · Owner: Research In Motion Limited · Inventors: Wormald, Christopher R.; Hardy, Michael Thomas; Klassen, Gerhard D.

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

An interrupt message is sent over one of a plurality of transport mediums from a first mobile device to a second mobile device. The interrupt message may include a first mobile device identifier associated with a transport medium that is independent of the plurality of transport mediums. Upon receipt of the interrupt message at the second mobile device an interruption of any current mobile device operation may occur to notify a user of the interrupt message.

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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 February 28, 2005 and granted February 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 2005
GrantedFebruary 24, 2015
Term endedFebruary 28, 2025
Patent numberCA 2736040 C
Classification (IPC)H04W4/12

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedFeb 28, 2005Patent grantedFeb 24, 2015Term endedFeb 28, 2025

Sources & verification

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