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Expired Canadian patentCanada

Extracellular vesicles from non-pathogenic amoebae useful as vehicle for transferring a molecule of interest to an eukaryotic cell

CA 2531865 C · Owner: Alfsen, Annette · Inventors: Lavialle, Francoise; Tatischeff, Irene; Alfsen, Annette

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to membrane vesicles from non-pathogenic amoeba in , particular from the amoeba Dictyostelium discoideum containing a molecule of , therapeutic interest to a method of preparing such vesicles and to the use of said vesicles as a vehicle for transferring the molecule of therapeutic interest to an eukaryotic mammalian cell.

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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 13, 2004 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.
FiledJuly 13, 2004
GrantedDecember 4, 2012
Term endedJuly 13, 2024
Patent numberCA 2531865 C
Classification (IPC)A61K47/48

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJuly 13, 2004Patent grantedDec 4, 2012Term endedJuly 13, 2024

Sources & verification

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