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Canadian application, no grantCanada

Nuclear transfer embryo formation method

CA 2493187 A1 · Owner: Trustees Of Tufts College · Inventors: Overstrom, Eric W.; Fischer, Daniela

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

A nuclear transfer embryo is formed by destabilizing microtubules of an oocyte, whereby essentially all endogenous chromatin collects at a second polar body during meiosis of an oocyte. The oocyte is fused with the nucleus of a donor somatic cell of the same species of said oocyte prior to cessation of extrusion of the second polar body from the oocyte thereby forming the , nuclear transfer embryo. In one embodiment the nuclear transfer embryo is , employed to impregnate an animal such as a mammal. In another embodiment the , donor nucleus is transgenic.

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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 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.
FiledJuly 29, 2003
GrantedNo grant recorded
Term endedJuly 29, 2023
Patent numberCA 2493187 A1
Classification (IPC)C12N15/87 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJuly 29, 2003Term endedJuly 29, 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.