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Expired Canadian patentCanada

Cell-specific herpes simplex virus expression/replication vector comprising icp4 and human calponin gene promoter

CA 2471822 C · Owner: Takahashi, Katsuhito · Inventors: Yamamura, Hisako; Takahashi, Katsuhito

CIPO record

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Abstract From the Canadian patent

The present invention is to provide a method wherein a cell-specific expression/replication vector that express and replicate a gene specifically in specific cells such as malignant tumors and the like and does not injure normal cells particularly a vector that can suppress the expression/replication at a desired period after the expression/replication is constructed, f or the use in therapies for such as malignant tumors and the like and treatment is , conducted by introducing the vector to a particular living cell such as malignant tumor and the like for expression. A cell-specific expression/replication vector that does not act to adult normal cells is constructed by: a …

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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 26, 2002 and granted July 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 26, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 26, 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.
FiledDecember 26, 2002
GrantedJuly 24, 2012
Term endedDecember 26, 2022
Patent numberCA 2471822 C
Classification (IPC)C12N15/64 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedDec 26, 2002Patent grantedJuly 24, 2012Term endedDec 26, 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.