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Expired Canadian patentCanada

Non-invasive gene targeting to the brain

CA 2403501 C · Owner: The Regents Of The University Of California · Inventors: Pardridge, William M.

CIPO record

Overview

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

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Abstract From the Canadian patent

Liposomes containing therapeutic genes are conjugated to multiple blood-brain barrier and brain cell membrane targeting agents to provide transport of the encapsulated gene across the blood-brain barrier and brain cell membrane. Once across the blood-brain barrier and brain cell membrane the encapsulated gene , expresses the encoded therapeutic agent within the brain to provide treatment and diagnosis of disease.

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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 April 17, 2001 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 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.
FiledApril 17, 2001
GrantedOctober 9, 2012
Term endedApril 17, 2021
Patent numberCA 2403501 C
Classification (IPC)A61K9/12 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedApril 17, 2001Patent grantedOct 9, 2012Term endedApril 17, 2021

Sources & verification

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