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Expired Canadian patentCanada

Carbamate compounds for use in preventing or treating psychotic disorders

CA 2439480 C · Owner: Plata-Salaman, Carlos R. · Inventors: Zhao, Boyu; Plata-Salaman, Carlos R.; Twyman, Roy E.

CIPO record

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

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Abstract From the Canadian patent

This invention is directed to a method for preventing or treating psychotic disorders comprising administering to a subject in need thereof a therapeutically effective amount of a compound selected from the group consisting of Formula (I) and Formula (II): (see formula I) (see formula II), wherein phenyl is substituted at X with one to five halogen atoms selected from , the group consisting of fluorine chlorine, bromine and iodine; and, R1, R2 R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and C1-C4 alkyl; wherein C1-C4 alkyl is optionally substituted with phenyl (wherein phenyl is optionally substituted with substituents independently , selected …

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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 February 21, 2002 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 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.
FiledFebruary 21, 2002
GrantedApril 26, 2011
Term endedFebruary 21, 2022
Patent numberCA 2439480 C
Classification (IPC)A61K31/27 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedFeb 21, 2002Patent grantedApril 26, 2011Term endedFeb 21, 2022

Sources & verification

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