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Expired Canadian patentCanada

Methods and devices for immunizing a host through administration of naked polynucleotides which encode antigenic peptides

CA 2204253 C · Owner: Carson, Dennis A. · Inventors: Carson, Dennis A.; Raz, Eyal; Howell, Meredith L.

CIPO record

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Abstract From the Canadian patent

The invention is directed to methods for introducing biologically active peptides into a host by administration of polynucleotides which operatively encode for the peptide of interest. In a preferred embodiment of the invention, a mammal is desensitized to an antigen in particular an allergen, through administration to the mammal of polynucleotides which operatively encode the antigen. The antigen-encoding polynucleotides are administered to host tissues which have a high concentration of antigen presenting cells in them relative to other host tissues. The method is particularly useful in treating allergies because the allergen-encoding polynucleotides of the invention to induce …

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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 October 31, 1995 and granted January 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1995
GrantedJanuary 21, 2003
Term endedOctober 31, 2015
Patent numberCA 2204253 C
Classification (IPC)A61K48/00 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedOct 31, 1995Patent grantedJan 21, 2003Term endedOct 31, 2015

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