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Expired Canadian patentCanada

Low concentration of peroxide for treating or preventing vaginal infections

CA 2465133 C · Owner: Bologna, William J. · Inventors: Levine, Howard L.; Bologna, William J.

CIPO record

Overview

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

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Abstract From the Canadian patent

The invention relates to a pharmaceutical vaginal composition for treating or preventing vaginal infections. The composition includes a synergistic mix of a bioadhesive, extended release formulation that decreases the pH and that contains a peroxide in an amount sufficient to increase oxygen concentration without sterilizing the vagina or substantially killing the normally-desired local vaginal flora. The invention also relates to a method of treating or preventing vaginal infections in a patient comprising inserting vaginally an amount of the pharmaceutical vaginal composition in an amount sufficient to decrease the pH and increase oxygene concentration without sterilizing the …

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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 28, 2002 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.
FiledOctober 28, 2002
GrantedMarch 6, 2012
Term endedOctober 28, 2022
Patent numberCA 2465133 C
Classification (IPC)A61K47/32 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedOct 28, 2002Patent grantedMarch 6, 2012Term endedOct 28, 2022

Sources & verification

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