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Expired Canadian patentCanada

Isothermal strand displacement nucleic acid amplification

CA 2185239 C · Owner: Kacian, Daniel Louis · Inventors: Kacian, Daniel Louis; Spingola, Marc; Dattagupta, Nanibhushan

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Abstract From the Canadian patent

Methods for amplifying target nucleic acid sequences using a nucleic acid polymerase lacking 5' exonuclease activity and a set of oligonucleotide primers. Preferably, a primer array is used. The primer array contains two sets of primers. One set contains at least two complementary primers, The other set contains at least two sense primers. Using the described methods amplification can be carried out, under essentialy constant environmental conditions without the requirement for exonuclease activity or restriction endonuclease activity.

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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 14, 1995 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2017.
  • 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 14, 1995
GrantedDecember 17, 2002
Term endedMarch 14, 2015
Patent numberCA 2185239 C
Classification (IPC)C12Q1/68 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedMarch 14, 1995Patent grantedDec 17, 2002Term endedMarch 14, 2015

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