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Expired Canadian patentCanada

"doping" in walk-through mutagenesis

CA 2482769 C · Owner: Crea, Roberto · Inventors: Crea, Roberto; Cappuccilli, Guido

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 of walk-through mutagenesis of a nucleic acid encoding a prototype polypeptide of interest, is described, the method comprising selecting a predetermined amino acid and one or more target regions of the polypeptide and synthesizing a mixture of oligonucleotides containing at each sequence position in the target region, either a prototype nucleotide that is required for synthesis of the prototype amino acid of the polypeptide or a , predetermined nucleotide that is required for synthesis of the predetermined amino acid, in which during the synthesis the ratio of available prototype , nucleotides to available predetermined nucleotides is greater than 1:1.

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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 April 16, 2003 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 2003
GrantedOctober 8, 2013
Term endedApril 16, 2023
Patent numberCA 2482769 C
Classification (IPC)C12N15/10 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 16, 2003Patent grantedOct 8, 2013Term endedApril 16, 2023

Sources & verification

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