Expired Canadian patentCanada
Video interaction
CA 2421775 C · Owner: Kargmann, Harry · Inventors: Kargmann, Harry; Herigstad, Dale
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Interactive material is delivered at least partly wirelessly to a mobile device in the vicinity of a video device on which video content is being displayed, the interactive material being related to the video content.
Read the whole patent
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 September 10, 2001 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 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.
FiledSeptember 10, 2001
GrantedMarch 12, 2013
Term endedSeptember 10, 2021
Patent numberCA 2421775 C
Classification (IPC)H04N21/47 +1 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.