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Expired Canadian patentCanada

Molecules with antibody combining sites that catalyze hydrolysis reactions

CA 2034947 C · Owner: Janda, Kim · Inventors: Janda, Kim

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

An antibody molecule or molecule containing antibody combining site portions (catalytic molecule) that catalytically hydrolyzes a preselected carboxylic acid amide or ester bond of a reactant ligand methods, of making and using the catalytic molecule and cells, that produce those molecules are disclosed. The catalytic molecules bind to a reactant ligand containing the bond to be hydrolyzed and also to a haptenic ligand. The haptenic ligand is structurally analogous to the reactant ligand and contains a tetrahedral carbon atom that is bonded to a hydroxyl group and to a saturated carbon atom at a position in the haptenic ligand that corresponds to position of the carbonyl group and its …

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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 January 25, 1991 and granted April 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1991
GrantedApril 14, 1998
Term endedJanuary 25, 2011
Patent numberCA 2034947 C
Classification (IPC)C12N9/14 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedJan 25, 1991Patent grantedApril 14, 1998Term endedJan 25, 2011

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