Novel ig fractions having an immunomodulatory activity
CA 2376335 A1 · Owner: Lirochon, Jacky · Inventors: Bruley-Rosset, Martine; Bourel, Dominique; Dhainaut, Frederic
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for preparing Ig fractions from human polyvalent intravenous Immunoglobulins (IV Ig) which are in particular likely to be responsible for the immunomodulatory effect observed during the treatment of certain autoimmune diseases. The invention concerns Ig fractions having reactivity to IgM IgG F(ab')2 or DNP hapten and no or little reactivity to non-self antigens that is Ig fractions which have idiotypic interactions among themselves (connected fraction) or which include natural antibodies reacting with the DNP hapten. Said fractions exhibit a polyreactivity to specific autoantigens.
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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 June 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2022.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.