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Expired Canadian patentCanada

Biological properties of du-145 supernatant

CA 2315249 C · Owner: Ichim, Thomas · Inventors: Ichim, Thomas; Zhong, Zhaohui

CIPO record

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Abstract From the Canadian patent

This invention discloses biologically useful properties of supernatant derived from the, prostate adenocarcinoma cell line DU-145. Supernatant from this cell line possesses the, ability to stimulate proliferation of T cells B cells, endothelial cells and , bone marrow cells in a dose-dependent manner. The properties of DU-145 supernatant can be used in, therapeutically to stimulate proliferation of certain cell types in a mammal.

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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 July 28, 2000 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 28, 2000
GrantedJune 18, 2002
Term endedJuly 28, 2020
Patent numberCA 2315249 C
Classification (IPC)C12P1/00 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJuly 28, 2000Patent grantedJune 18, 2002Term endedJuly 28, 2020

Sources & verification

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