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Expired Canadian patentCanada

Prodrugs of excitatory amino acids

CA 2433667 C · Owner: Pedersen, Steven Wayne · Inventors: Monn, James Allen; Pedersen, Steven Wayne; Coffey, David Scott

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

This invention relates to synthetic excitatory amino acid prodrugs according to formula (I) and processes for their preparation. The invention further relates to methods of using, and pharmaceutical compositions comprising the , compounds for the treatment of neurological disorders and psychiatric disorders.

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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 December 21, 2001 and granted June 14, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 21, 2001
GrantedJune 14, 2011
Term endedDecember 21, 2021
Patent numberCA 2433667 C
Classification (IPC)C07C229/50 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedDec 21, 2001Patent grantedJune 14, 2011Term endedDec 21, 2021

Sources & verification

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