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Expired Canadian patentCanada

Protein/(poly)peptide libraries

CA 2229043 C · Owner: Ge, Liming · Inventors: Ge, Liming; Moroney, Simon; Pluckthun, Andreas

CIPO record

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Abstract From the Canadian patent

The present invention relates to synthetic DNA sequences which encode one or more collections of homologous proteins/(poly)peptides and methods for , generating and applying libraries of these DNA sequences. In particular the , invention relates to the preparation of a library of human-derived antibody genes by the use of synthetic consensus sequences which cover the structural repertoire of antibodies encoded in the human genome. Furthermore the , invention relates to the use of a single consensus antibody gene as a universal framework for highly diverse antibody libraries.

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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 August 19, 1996 and granted June 7, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1996
GrantedJune 7, 2016
Term endedAugust 19, 2016
Patent numberCA 2229043 C
Classification (IPC)C40B40/08 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedAug 19, 1996Patent grantedJune 7, 2016Term endedAug 19, 2016

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