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Expired Canadian patentCanada

Substituted tetracycline compounds

CA 2479877 C · Owner: Ismail, Mohamed Y. · Inventors: Ismail, Mohamed Y.; Sheahan, Paul; Amoo, Victor

CIPO record

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Abstract From the Canadian patent

The present invention pertains, at least in part to novel substituted , tetracycline compounds. These tetracycline compounds can be used to treat numerous tetracycline compound-responsive states such as bacterial infections , and neoplasms as well as other known applications for minocycline and tetracycline compounds in general, such as blocking tetracycline efflux and modulation of gene expression.

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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 March 18, 2003 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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.
FiledMarch 18, 2003
GrantedAugust 21, 2012
Term endedMarch 18, 2023
Patent numberCA 2479877 C
Classification (IPC)C07C237/26 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMarch 18, 2003Patent grantedAug 21, 2012Term endedMarch 18, 2023

Sources & verification

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