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Expired Canadian patentCanada

Early detection of lysosomal storage disorders

CA 2253875 C · Owner: Hopwood, John J. · Inventors: Meikle, Peter J.; Brooks, Douglas A.; Hopwood, John J.

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Abstract From the Canadian patent

The present invention relates generally to lysosomal storage disorders and to diagnostic agents for their detection in humans and other animals. More particularly, the present invention is directed to the uses of the LSD markers Lamp-1, Lamp-2, Limp-II 4-sulphatase, acid , phosphatase (ACP) .beta.-hexosaminidase or .alpha.-mannosidase amongst , others as diagnotic agents for the detection of many lysosomal storage 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 May 16, 1997 and granted February 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 1997
GrantedFebruary 22, 2011
Term endedMay 16, 2017
Patent numberCA 2253875 C
Classification (IPC)G01N33/56 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMay 16, 1997Patent grantedFeb 22, 2011Term endedMay 16, 2017

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