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Expired Canadian patentCanada

Liposomes encapsulating anticancerous drugs and use thereof in the treatment of malignant tumours

CA 2425271 C · Owner: Lipotec, S.A. · Inventors: Pons Lambiez, Ferran; Fabra Fres, Angels; Garces Garces, Josep

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Abstract From the Canadian patent

Liposomes encapsulating anticancerous drugs and the use thereof in the treatment of malignant tumours. The liposomes are coated with a lipopeptide composed of three substructures: a lipid fragment an active , oligopeptide and an oligopeptide spacer between the other two fragments. Applicable in intravenous administration for treatment of malignant tumours.

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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 October 3, 2001 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 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.
FiledOctober 3, 2001
GrantedApril 19, 2011
Term endedOctober 3, 2021
Patent numberCA 2425271 C
Classification (IPC)A61K9/12 +1 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedOct 3, 2001Patent grantedApril 19, 2011Term endedOct 3, 2021

Sources & verification

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