Phl p 5a derivatives having reduced allergenicity and retained t-cell reactivity
CA 2528053 C · Owner: Fiebig, Helmut · Inventors: Fiebig, Helmut; Cromwell, Oliver; Wald, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the production and use of variants of the group 5 allergens of Pooideae, characterised in displaying a reduced IgE reactivity relative to , known wild type allergens and also a substantially retained reactivity with Tlymphocytes. , Said hypoallergenic allergen varieties can be used for specific immunotherapy (hyposensitisation) of patients with grass pollen allergies or for , preventative immunotherapy of grass pollen allergies.
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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 6, 2004 and granted August 12, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2026.
- 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.