Peptide composition as immunogen for the treatment of allergy
CA 2329754 C · Owner: United Biomedical, Inc. · Inventors: Wang, Chang Yi; Walfield, Alan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides peptides comprising a sequence homologous to a portion of the third constant domain of the epsilon heavy chain of IgE covalently , linked to either (1) a carrier protein or (2) a helper T cell epitope, and , optionally to other immunostimulatory sequences as well. The invention provides for the use of such peptides as immunogens to elicit the production in mammals of high titer polyclonal antibodies which are specific to a target , effector site on the epsilon heavy chain of IgE. The peptides are expected to be useful in pharmaceutical compositions to provide an immunotherapy for IgE-, mediated allergic diseases.
Read the whole patent
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, 1999 and granted December 20, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.