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Expired Canadian patentCanada

Method of measuring the efficacy of a skin treatment program

CA 2522953 C · Owner: Martin, Katharine · Inventors: Pellegrino, Arthur; Kollias, Nikiforos; Kurtz, Ellen

CIPO record

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Abstract From the Canadian patent

According to the present invention, a method is provided for measuring the efficacy of a skin treatment program on human skin more specifically, the , method provides a method for measuring the efficacy of an anti-aging skin treatment program in terms of the constructive age change or apparent age , change, of human skin after the use of the treatment program.

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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 21, 2004 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 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 21, 2004
GrantedAugust 28, 2012
Term endedApril 21, 2024
Patent numberCA 2522953 C
Classification (IPC)A61B5/10 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 21, 2004Patent grantedAug 28, 2012Term endedApril 21, 2024

Sources & verification

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