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Expired Canadian patentCanada

Transgenic clawed frog embryos and use thereof as detectors of endocrine disrupters in the environment

CA 2487765 C · Owner: Demeneix, Barbara · Inventors: Demeneix, Barbara; Turque, Nathalie

CIPO record

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Abstract From the Canadian patent

The invention relates to transgenic aquatic animals particularly the clawed frog and the zebra fish and cells derived therefrom characterised in comprising at least one expression cassette with a regulatory DNA sequence selected from the response elements to nuclear hormone receptors particularly TRE, connected in a functional manner downstream of a DNA segment coding for a marker protein such as luciferase or GFP. The invention further relates to methods using the transgenic cells and animals according to the invention for the identification of endocrine disrupters in the environment.

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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 May 27, 2003 and granted December 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 27, 2003
GrantedDecember 3, 2013
Term endedMay 27, 2023
Patent numberCA 2487765 C
Classification (IPC)C12N15/00 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMay 27, 2003Patent grantedDec 3, 2013Term endedMay 27, 2023

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