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Expired Canadian patentCanada

Methods for generating hypermutable microbes

CA 2398094 C · Owner: Morphotek, Inc. · Inventors: Kinzler, Kenneth W.; Grasso, Luigi; Vogelstein, Bert

CIPO record

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Abstract From the Canadian patent

Bacteria are manipulated to create desirable output traits using dominant negative alleles of mismatch repair proteins. Enhanced hypermutation is achieved by combination of mismatch repair deficinecy and exogenously applied mutagens. Stable bacteria containing desirable output traits are obtained by restoring mismatch reparir activity to the bacteria.

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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 February 12, 2001 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 12, 2001
GrantedJanuary 8, 2013
Term endedFebruary 12, 2021
Patent numberCA 2398094 C
Classification (IPC)C12N15/10 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedFeb 12, 2001Patent grantedJan 8, 2013Term endedFeb 12, 2021

Sources & verification

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