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Expired Canadian patentCanada

Nucleic acid amplification oligonucleotides with molecular energy transfer labels and methods based thereon

CA 2260973 C · Owner: Nazarenko, Irina A. · Inventors: Nazarenko, Irina A.; Hohman, Robert J.; Winn-Deen, Emily S.

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Abstract From the Canadian patent

The present invention provides labeled nucleic acid amplification oligonucleotides, which can be linear or hairpin primers or blocking oligonucleotides. The oligonucleotides of the invention are labeled with donor and/or acceptor moieties of molecular energy transfer pairs. The moieties can be fluorophores, such that fluorescent energy emitted by the donor is absorbed by the acceptor. The acceptor may be a fluorophore that fluoresces at a wavelength different from the donor moiety or it may be a quencher. The , oligonucleotides of the invention are configured so that a donor moiety and an acceptor moiety are incorporated into the amplification product. The invention also provides …

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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 July 15, 1997 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 15, 1997
GrantedMarch 18, 2003
Term endedJuly 15, 2017
Patent numberCA 2260973 C
Classification (IPC)C07H21/00 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJuly 15, 1997Patent grantedMarch 18, 2003Term endedJuly 15, 2017

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