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Expired Canadian patentCanada

Use of colesevelam in reducing serum glucose

CA 2444046 C · Owner: Geltex Pharmaceuticals, Inc. · Inventors: Burke, Steven K.; Donovan, Joanne M.

CIPO record

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Abstract From the Canadian patent

A method for treating hyperglycemia and/or reducing serum glucose levels in a patient that includes administering to the patient a therapeutically effective amount of an amine polymer is disclosed. In one embodiment the amine polymer , is aliphatic. Examples of polymers useful in an embodiment of the invention include sevelamer hydrogen chloride and colesevelam. The invention includes the use of amine polymers such as a cross-linked polymer characterized by a repeat unit having the formula: and salts and copolymers thereof where n is a , positive integer and x is zero or an integer between 1 and about 4. Also described is a use, for the manufacture of a medicament of a polymer that , …

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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 10, 2002 and granted June 7, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2024.
  • 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 10, 2002
GrantedJune 7, 2011
Term endedApril 10, 2022
Patent numberCA 2444046 C
Classification (IPC)A61K31/78 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 10, 2002Patent grantedJune 7, 2011Term endedApril 10, 2022

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