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Expired Canadian patentCanada

Cultivation of hair inductive cells

CA 2505409 C · Owner: Teumer, Jeffrey Keller · Inventors: Philips, Erica; Qiao, Jizeng; Wolowacz, Richard Gregory

CIPO record

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Abstract From the Canadian patent

The present invention relates to culturing cells which may be used in hair induction. In one aspect of the invention there is provided a method for cultivation of hair inductive cells, comprising the step of culturing the hair inductive cells in a culture medium comprising a medium conditioned by conditioning cells, in which the conditioning cells are derived from nonepidermal tissue.

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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 November 14, 2003 and granted April 4, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 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.
FiledNovember 14, 2003
GrantedApril 4, 2017
Term endedNovember 14, 2023
Patent numberCA 2505409 C
Classification (IPC)C12N5/07 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedNov 14, 2003Patent grantedApril 4, 2017Term endedNov 14, 2023

Sources & verification

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