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Expired Canadian patentCanada

Phosphorus-containing antimicrobial compounds and methods for their use

CA 2827671 C · Owner: Lakewood-Amedex, Inc. · Inventors: Thompson, Terry; Gatton, Steven L.; Arrow, Amy

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 present invention provides protonated compounds having antimicrobial activity. The invention also provides antimicrobial compositions comprising protonated compounds of the invention. The protonated compounds of the invention provide efficacious antimicrobial activity against resistant strains of bacteria and opportunistic fungi.

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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 May 3, 2002 and granted July 5, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 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.
FiledMay 3, 2002
GrantedJuly 5, 2016
Term endedMay 3, 2022
Patent numberCA 2827671 C
Classification (IPC)A01N57/16 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 3, 2002Patent grantedJuly 5, 2016Term endedMay 3, 2022

Sources & verification

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