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Expired Canadian patentCanada

Inhibitory and non-inhibitory antigen binding polypeptides against human p450 enzymes

CA 2629643 C · Owner: Gonzalez, Frank J. · Inventors: Gelboin, Harry V.; Gonzalez, Frank J.

CIPO record

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Abstract From the Canadian patent

Antigen binding polypeptides that specifically bind human cytochrome P450 3A3 3A4, and 3A5 and that specifically inhibit the enzyme activity of human cytochrome P450 3A3 3A4, and 3A5 are described. Antigen binding polypeptides that specifically bind to human cytochrome P450 3A3 and 3A4 are also described. Antigen binding polypeptides which specifically bind to human cytochrome 2450 2E1 and which specifically inhibit the enzyme activity of human cytochrome P450 2E1 are described. Antigen binding polypeptides which specifically bind to human cytochrome P450 2E1 are also described. Methods of determining the contribution of human cytochrome P450s to the metabolism of compounds using the …

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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 November 15, 1996 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 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.
FiledNovember 15, 1996
GrantedJanuary 8, 2013
Term endedNovember 15, 2016
Patent numberCA 2629643 C
Classification (IPC)C07K16/40 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedNov 15, 1996Patent grantedJan 8, 2013Term endedNov 15, 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.