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Expired Canadian patentCanada

Methods of detecting mammalian nucleic acids isolated from stool specimen and reagents therefor

CA 2132874 C · Owner: Vogelstein, Bert · Inventors: Vogelstein, Bert; Kinzler, Kenneth W.

CIPO record

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

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Abstract From the Canadian patent

A method to isolate nucleic acids from stool specimen which is used to detect mutations associated with gastrointestinal neoplasia. An exemplary result obtained is shown in the Figure. Reagents used to carry out the isolation of nucleic acids are also disclosed.

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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 31, 1993 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 31, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2015.
  • 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 31, 1993
GrantedAugust 19, 2003
Term endedMarch 31, 2013
Patent numberCA 2132874 C
Classification (IPC)C12Q1/68 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedMarch 31, 1993Patent grantedAug 19, 2003Term endedMarch 31, 2013

Sources & verification

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