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Canadian application, no grantCanada

Methods for purifying and detecting double stranded dna target sequences by triple helix interaction

CA 2440133 A1 · Owner: Centelion · Inventors: Cameron, Beatrice; Blanche, Francis

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 invention concerns novel double stranded DNA target sequences capable of interacting with a third strand and forming a stable triple helix. The invention also concerns a method for purifying a double stranded DNA molecule which consists in contacting a solution containing said DNA molecule with a third DNA strand capable of forming by hybridization a triple helix structure with a double stranded DNA target sequence borne by said DNA molecule.

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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 March 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 25, 2002
GrantedNo grant recorded
Term endedMarch 25, 2022
Patent numberCA 2440133 A1
Classification (IPC)C12Q1/68 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMarch 25, 2002Term endedMarch 25, 2022

Sources & verification

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