Antigenic epitopes present on membrane-bound but not secreted iga
CA 2060666 C · Owner: Chang, Tse-Wen · Inventors: Chang, Nancy T.; Chang, Tse-Wen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Antigenic epitopes associated with the extracellular segment of the domain which anchors immunoglobulins to the B cell membrane are disclosed. These epitopes are present on IgA-bearing B cells but not the secreted, soluble form of IgA. The epitopes can be exploited for therapy and prophylaxis. For example antibodies , specific for the epitopes associated with the anchoring peptide encompassing the epitope domain of IgA can be used to increase secretory IgA production for the purposes of treating patients with infectious disesases and IgE-mediated allergic diseases.
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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 21, 1990 and granted July 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2012.
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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.