Method and system for delivery of a secure document
CA 2374694 A1 · Owner: Silverbrook, Kia · Inventors: Silverbrook, Kia; Lapstun, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for issuing secure documentation such as tickets or , coupons. The method includes producing a secure document having printed information and coded data thereon, the coded data including a unique identifier indicative of the secure document. A correspondence is recorded in , a computer system, between the secure document and validity status and/or authenticity information relating to the document. A sensing device is provided, adapted to sense the coded data on the secure document. The sensing device is further adapted for communication with said computer system whereby , the validity status and/or authenticity of said document can be determined by sensing said …
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 May 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2022.
- 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.