Television schedule system and method of operation
CA 2444242 A1 · Owner: Rovi Guides, Inc. · Inventors: Russman, Robert E.; Schein, Steven M.; Alba, Theresa A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for providing television program information for a viewer. The method involves displaying a television schedule guide including a listing, of a plurality of television programs telecast at particular times receiving , viewer, selection of a television program listing associated with a particular television, program, storing the viewer selection of the television program listing and , alerting, the viewer when an instance of the particular television program is added to the, television schedule guide.
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 June 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.