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Expired Canadian patentCanada

Immunostimulatory nucleic acid molecules

CA 2270345 C · Owner: Klinman, Dennis · Inventors: Klinman, Dennis; Krieg, Arthur M.; Steinberg, Alfred D.

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

Nucleic acid sequences containing unmethylated CpG dinucleotides that modulate an immune response including stimulating a Th1 pattern of immune activation cytokine production, NK lytic activity and B cell proliferation are , disclosed. The sequences are also useful as synthetic adjuvant.

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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 30, 1997 and granted May 13, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2019.
  • 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 30, 1997
GrantedMay 13, 2014
Term endedOctober 30, 2017
Patent numberCA 2270345 C
Classification (IPC)C07H21/00 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedOct 30, 1997Patent grantedMay 13, 2014Term endedOct 30, 2017

Sources & verification

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