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Expired Canadian patentCanada

Surface-immobilised multilayer structure of vesicles

CA 2521613 C · Owner: Layerlab Aktiebolag · Inventors: Svedhem, Sofia; Reimhult, Erik; Pfeiffer, Indriati

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

A surface-immobilised multilayer structure of a plurality of vesicles (2) said structure comprising at least one linker (4) immobilised onto said surface, said at least one linker (4) being bound to at least one other linker, which is attached to a vesicle which optionally may have another , linker (5) bound to another linker (5) attached to another vesicle (2) wherein the structure either comprises at least two vesicles (2) bound via linkers (5) to each other or at least two vesicles (2) bound via linkers (5) attached to the vesicles to one linker (4) immobilised onto said surface (1).

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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 7, 2004 and granted March 31, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 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.
FiledApril 7, 2004
GrantedMarch 31, 2015
Term endedApril 7, 2024
Patent numberCA 2521613 C
Classification (IPC)G01N33/54

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 7, 2004Patent grantedMarch 31, 2015Term endedApril 7, 2024

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