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Expired Canadian patentCanada

Use of nitric oxide-releasing agents for reducing metastasis risk

CA 2205555 C · Owner: Korthuis, Ronald J. · Inventors: Korthuis, Ronald J.; Kong, Lipu; Keefer, Larry K.

CIPO record

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Abstract From the Canadian patent

A method for inhibiting the adherence between cancerous cells and noncancerous structures in a mammal, comprising the administration to the mammal of a nitric oxide-releasing compound containing a nitric oxide-releasing N2O2- functional group. The compound is capable of releasing an adherence-inhibiting effective amount of nitric oxide to the mammal.

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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 20, 1995 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2017.
  • 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 20, 1995
GrantedAugust 21, 2001
Term endedNovember 20, 2015
Patent numberCA 2205555 C
Classification (IPC)A61K31/13 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedNov 20, 1995Patent grantedAug 21, 2001Term endedNov 20, 2015

Sources & verification

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