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Expired Canadian patentCanada

Viracidal, bactericidal and spermicidal vaginal suppository

CA 2176474 C · Owner: Ford, Larry C. · Inventors: Ford, Larry C.

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

A vaginal suppository or other type of vaginal passary such as cream foam or ointment, which contains as its active ingredients at least one pharmaceutically acceptable topically safe antimicrobial agent, such as an agent selected from the group of benzalkonium chloride, cetylpyridinium chloride, chlorhexidine gluconate and povidone iodine imidiazolidinyl urea and diazolidinyl urea and a viable colony of micro-encapsulated lactobacilli bacteria. The viable lactobacilli are included in the suppository in micro encapsulated form which, protects the bacteria during storage of the suppository from the action of the bacteriocidal agent. When exposed to the vaginal milieu the micro encapsulation …

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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 December 2, 1994 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 2, 1994
GrantedAugust 21, 2001
Term endedDecember 2, 2014
Patent numberCA 2176474 C
Classification (IPC)A61K9/00 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedDec 2, 1994Patent grantedAug 21, 2001Term endedDec 2, 2014

Sources & verification

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