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Expired Canadian patentCanada

Inhibition of c. difficile infections by indigestible oligosaccharides

CA 2217157 C · Owner: Garleb, Keith Allen · Inventors: Walton, Joseph Edward; Garleb, Keith Allen; Campbell, Shelia Martinson

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Abstract From the Canadian patent

The primary etiology of antibiotic-associated diarrhea (also known as pseudomembranous colitis) has been recognized as Clostridium difficile. It is believed that the indigenous microflora of a healthy individual suppresses the normally present C. difficile. However when the indigenous microflora are , disrupted (e.g. during antibiotic treatment) overgrowth of C. difficile may occur causing diarrhea and colitis. Treatment of C. difficile with antibiotics has proven effective, but many times relapse occurs; and dehydration due to diarrhea is an exacerbating problem. It has been suggested that normalization of the microflora will inhibit C. difficile relapse. Indigestible …

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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 4, 1996 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 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.
FiledApril 4, 1996
GrantedJuly 30, 2002
Term endedApril 4, 2016
Patent numberCA 2217157 C
Classification (IPC)A61K33/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedApril 4, 1996Patent grantedJuly 30, 2002Term endedApril 4, 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.