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Expired Canadian patentCanada

2-amino-4,5-trisubstituted thiazolyl derivatives and their use against autoimmune disorders

CA 2451980 C · Owner: Vandermaesen, Nele · Inventors: Van Lommen, Guy Rosalia Eugeen; Hendrickx, Robert Jozef Maria; Cooymans, Ludwig Paul

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Abstract From the Canadian patent

This invention concerns the use of a compound of formula (I') a N-oxide, a , pharmaceutically acceptable addition salt a quaternary amine and a , stereochemically isomeric form thereof wherein Z is halo; C1-6alkyl; C1-6 , alkylcarbonyl; C1-6alkyloxycarbonyl; aminocarbonyl; C1-6alkyl substituted with hydroxy, carboxyl, cyano, amino, amino substituted with piperidinyl amino , substituted with C1-4alkyl substituted piperidinyl mono -or di(C1-, 6alkyl)amino, aminocarbonyl mono -or di(C1-6alkyl)aminocarbonyl, C1- 6alkyloxycarbonyl, C1-6alkyloxy, piperidinyl piperazinyl, morpholinyl, thiomorpholinyl; polyhaloC1-4alkyl; cyano; amino; mono -or di(C1- 6alkyl)aminocarbonyl; C1-6alkyloxycarbonyl; …

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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 August 9, 2002 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 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.
FiledAugust 9, 2002
GrantedDecember 11, 2012
Term endedAugust 9, 2022
Patent numberCA 2451980 C
Classification (IPC)C07D417/04 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedAug 9, 2002Patent grantedDec 11, 2012Term endedAug 9, 2022

Sources & verification

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