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Expired Canadian patentCanada

Optimized expression of hpv 31 l1 in yeast

CA 2519112 C · Owner: Merck Sharp & Dohme Corp. · Inventors: Neeper, Michael P.; Schultz, Loren D.; Markus, Henry Z.

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Abstract From the Canadian patent

Synthetic DNA molecules encoding the HPV31 L1 protein are provided. Specifically, the present invention provides polynucleotides encoding HPV31 L1 protein, wherein said polynucleotides are free from internal transcription termination signals that are recognized by yeast. Also provided are synthetic polynucleotides encoding HPV31 L1 wherein the polynucleotides have been codonoptimized for high level expression in a yeast cell. The synthetic molecules may be used to produce HPV31 virus-like particles (VLPs) and to produce , vaccines and pharmaceutical compositions comprising the HPV31 VLPs. The vaccines of the present invention provide effective immunoprophylaxis against papillomavirus …

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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 19, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.
FiledMarch 19, 2004
GrantedSeptember 11, 2012
Term endedMarch 19, 2024
Patent numberCA 2519112 C
Classification (IPC)C12N15/37 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 19, 2004Patent grantedSep 11, 2012Term endedMarch 19, 2024

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