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Expired Canadian patentCanada

Antisense antiviral agent and method for treating ssrna viral infection

CA 2463641 C · Owner: Smith, Alvin W. · Inventors: Skilling, Douglas E.; Smith, Alvin W.; Iversen, Patrick L.

CIPO record

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

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Abstract From the Canadian patent

This invention provides antisense antiviral compounds and methods of their use in inhibition of growth of viruses of the picornavirus calicivirus, togavirus , and flavivirus families as in treatment of a viral infection. The antisense antiviral compounds are substantially uncharged oligomers having a targeting base sequence that is substantially complementary to a viral target sequence which spans the AUG start site of the first open reading frame of the viral genome.

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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 16, 2002 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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 16, 2002
GrantedJuly 9, 2013
Term endedOctober 16, 2022
Patent numberCA 2463641 C
Classification (IPC)A61K31/71 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedOct 16, 2002Patent grantedJuly 9, 2013Term endedOct 16, 2022

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