A virus which can express tumor angiostatin factor with high efficiency in specific tumor cells and the use of it
CA 2430625 A1 · Owner: Virgene Biotechnology Limited · Inventors: Che, Xiaoyan; Qian, Qijun; Sham, Shuntong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed a virus, which can express tumor angiostatin factor with high efficiency and proliferate in specific tumor cell and the use of it. Said virus mainly propagates in tumor cells and it can specifically kill the tumor cells straightforwardly. By adding the nucleotide sequences encoding tumor angiostatin factor in the non-proliferating necessary region of the viral genome. With the replication of the virus in the tumor cells the , nuclotide sequences encoding the tumor angiostatin factor multiple. So it can express tumor angiostatin factor with high efficiency in specific tumor cell and restrain the forming of the tumor blood vessel and control the tumor , forming, …
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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 November 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.