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Expired Canadian patentCanada

Dna-based steganography

CA 2395874 C · Owner: Clelland, Catherine · Inventors: Clelland, Catherine; Bancroft, Frank Carter

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention relates to a stenographic method for concealing coded messages in DNA. The method of the invention comprises concealing a DNA encoded message within a genomic DNA sample followed by further concealment of the DNA sample to a microdot. The present invention further provides a method for the use of genomic steganography to mark and authenticate objects of interest.

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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 May 5, 2000 and granted September 20, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 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.
FiledMay 5, 2000
GrantedSeptember 20, 2011
Term endedMay 5, 2020
Patent numberCA 2395874 C
Classification (IPC)C12Q1/68

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedMay 5, 2000Patent grantedSep 20, 2011Term endedMay 5, 2020

Sources & verification

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