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Expired Canadian patentCanada

Liquid formulations for dermal application in treatment of parasitic insects in animals

CA 2443159 C · Owner: Bayer Healthcare Ag · Inventors: Gilges, Martin; Dorn, Hubert; Hansen, Olaf

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention relates to novel skin-friendly dermally applicable liquid, formulations comprising permethrin and agonists or antagonists of nicotinic acetylcholine receptors of insects for controlling parasitic insects on animals.

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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 2, 2002 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2024.
  • 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 2, 2002
GrantedSeptember 25, 2012
Term endedApril 2, 2022
Patent numberCA 2443159 C
Classification (IPC)A01N43/36 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 2, 2002Patent grantedSep 25, 2012Term endedApril 2, 2022

Sources & verification

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