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Expired Canadian patentCanada

Hepatitis c virus ns5b polymerase inhibitor binding pocket

CA 2522574 C · Owner: Laplante, Steven · Inventors: Jolicoeur, Eric; Coulombe, Rene; Poupart, Marc Andre

CIPO record

Overview

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Abstract From the Canadian patent

The HCV NS5B polymerase, when complexed with certain inhibitors adopts a , confirmation in which the finger loop region defined by amino acid residues 18 to 35 is displaced to expose a binding pocket defined generally by amino acid residues 392, 393, 395, 396, 399, 424, 425 428, 429, 492, 493, 494, 495, 496, 500 and 503. This newly exposed binding pocket defines a novel target in the search of further chemical entities which are capable of binding to HCV NS5B and modulating, or preferably inhibiting the polymerase activity of HCV NS5B.

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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 5, 2004 and granted July 7, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2026.
  • 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 5, 2004
GrantedJuly 7, 2015
Term endedMay 5, 2024
Patent numberCA 2522574 C
Classification (IPC)C07K14/18 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 5, 2004Patent grantedJuly 7, 2015Term endedMay 5, 2024

Sources & verification

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