Transgenic non-human animals depleted in a mature lymphocytic cell-type
CA 2004477 A1 · Owner: Berns, Antonius J. M. · Inventors: Krimpenfort, Paulus J. A.; Berns, Antonius J. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Transgenic non-human animals having a phenotype characterized by the substantial depletion of a mature lymphocytic cell type otherwise naturally occurring in the species from which the transgenic animal is derived. The phenotype is conferred in the transgenic animal by a transgene contained in at least the precursor stem cell of the lymphocytic cell type which is depleted. The transgene comprises a DNA sequence encoding a lymphatic polypeptide variant which inhibits maturation of the lymphocytic cell type.
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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 December 4, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.