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Expired Canadian patentCanada

A set of oligo-nucleotides against hiv infection and its application in the prevention and treatment of acquired immune deficiency syndrome

CA 2808592 C · Owner: Beijing Solobio Genetechnology Company Ltd. · Inventors: Li, Yuejuan; Zuo, Conglin; Zhou, Zhiwen

CIPO record

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Abstract From the Canadian patent

The invention provides a set of nucleotides against HIV infection and their application for treatment and prevention of AIDS. The sequences of the nucleotides were shown in the sequences table. The invention was superior to the similar technology as following: High conserved RNA sequences were obtained by compare all the published HIV genome sequences. Double strand RNA sequences derived from the sequences can effectively inhibit the expression of target HIV gene. HIV gene expression can also be inhibited by double strand hairpin-like RNA transcribed in the cells harboring recombinant plasmid which contain the DNA sequences encoding the RNA sequences. Further HIV gene expression can be …

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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 December 16, 2003 and granted April 28, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 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.
FiledDecember 16, 2003
GrantedApril 28, 2015
Term endedDecember 16, 2023
Patent numberCA 2808592 C
Classification (IPC)C12N15/11 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedDec 16, 2003Patent grantedApril 28, 2015Term endedDec 16, 2023

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