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Expired Canadian patentCanada

Methods for determining phospholipids and antibodies thereof

CA 2058769 C · Owner: Krilis, Steven Anthony · Inventors: Chesterman, Colin Nicholson; Krilis, Steven Anthony; Mcneill, Hugh Patrick

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Abstract From the Canadian patent

A method for determining whether antiphospholipid antibodies present in autoimmune diseases are present in a sample is disclosed. The method comprises contacting the sample with a negatively charged phospholipid and with .beta.-2-glycoprotein-I and determining whether any antiphospholipid antibodies have bound to the contacted phospholipid and .beta.-2-glycoprotein-I wherein detection of binding of antiphospholipid antibodies to the phospholipid and .beta.-2-glycoprotein-I is indicative that antiphospholipid antibodies present in autoimmune diseases are present in the sample. Also disclosed is a method for determining whether anticardiolipin antibodies present in autoimmune diseases are …

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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 4, 1991 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2013.
  • 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 4, 1991
GrantedMarch 2, 1999
Term endedApril 4, 2011
Patent numberCA 2058769 C
Classification (IPC)G01N33/56 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedApril 4, 1991Patent grantedMarch 2, 1999Term endedApril 4, 2011

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