System and method for providing a multiple-stage contest
CA 2604204 C · Owner: Cantor Index Llc · Inventors: Noviello, Joseph C.; Manning, Gregory P.; Lutnick, Howard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system of providing a multiple-stage contest is provided. A plurality of contest entries , eligible to win a multiple-stage contest are sold to a plurality of contestants, each contest , entry being defined at least by a set of one or more distinct identifiers. At each stage in the , multiple-stage contest one or more determinations regarding the distinct identifiers are , made, which determinations cause a portion of the contest entries remaining eligible at that , stage to become ineligible to win the contest. A market may be provided for contest , entries remaining eligible after at least one of the plurality of stages. At least one winning , contest entry is determined from one …
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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 April 12, 2006 and granted December 19, 2023. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2026.
- 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.
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.