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Expired Canadian patentCanada

Pharmaceutical formulations with improved bioavailability

CA 2483827 C · Owner: Burnside, Beth A. · Inventors: Shojaei, Amir H.; Ibrahim, Scott; Flanner, Henry

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In accordance with the present invention there is provided a pharmaceutical formulation for modified release of an active ingredient in the gastrointestinal tract comprising a plurality of irregularly shaped cores and wherein an active ingredient.

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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 29, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2025.
  • 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 29, 2003
GrantedJanuary 24, 2012
Term endedApril 29, 2023
Patent numberCA 2483827 C
Classification (IPC)A61K9/16 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 29, 2003Patent grantedJan 24, 2012Term endedApril 29, 2023

Sources & verification

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