Dna sequence and preparation of grass pollen allergen phl p4 by recombinant methods
CA 2491038 C · Owner: Fiebig, Helmut · Inventors: Cromwell, Oliver; Petersen, Arnd; Suck, Roland
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 provision of the gene sequence of the grass pollen main allergen Phl p 4. The invention also includes fragments novel , combinations of partial sequences and point mutants having a hypoallergenic effect. The recombinant DNA molecules and the derived polypeptides fragments, novel combinations of partial sequences and variants can be used for the therapy of pollen-allergy diseases. The recombinantly produced proteins can be used for <i>in vitro</i> and <i>in vivo</i> diagnosis of 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 June 11, 2003 and granted April 25, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2025.
- 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.