Attenuated gram negative bacteria
CA 2481186 C · Owner: Crooke, Helen Rachel · Inventors: Goutebroze, Sylvain Gabriel; Crooke, Helen Rachel; Shea, Jacqueline Elizabeth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed and claimed are a mutant of a gram negative bacterium wherein said , bacterium has at least one mutation in a nucleotide sequence which codes for a polypeptide having an identity which is equal or more than 70 % 75 % , 80 %, 85 %, 90 %, 95 %, 96 % , 97 % 98 %, or 99 % with an amino acid sequence coded by a nucleotide sequence selected from the group consisting of nucleotide sequences identifies SEQ ID NO: 2, 6, 9 12, 16, 19, 22, 25, 28, 31, 34, 37, 40 43, 46, 49, 52, 55, 58, 61, 64, 67, 70 75, 78, 81, 84, 87, 90, 93; said , mutation resulting in attenuated virulence of the bacterium. Immunogenic compositions and vaccines containing such as a mutant are also disclosed and …
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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 April 4, 2003 and granted October 6, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 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.