Variants of the major allergen phl p 1 from timothy grass
CA 2495825 C · Owner: Merck Patent Gesellschaft Mit Beschraenkter Haftung · Inventors: Cromwell, Oliver; Suck, Roland; Fiebig, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to pharmaceutically significant variants of the major allergen Phl p 1 from timothy grass, and is characterised in that the previously impossible production of monomer molecules which are stable and soluble in physiological media can be carried out by means of prokaryotic expression systems, and said molecules can be subsequently purified.
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 July 31, 2003 and granted March 17, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 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.