Attenuated cells comprising sp12 mutants, carriers and compositions containing same, methods of production and uses thereof
CA 2341349 C · Owner: Microscience Limited · Inventors: Guzman, Carlos Alberto; Hensel, Michael; Shea, Jacqueline
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present application provides an attenuated gram-negative cell comprising a SPI2 gene locus , wherein at least one of the effector gene the chaperon gene or the secretion , apparatus gene is inactivated. The present application also provides carriers comprising these attenuated , gram-negative cells, methods of preparing such cells and carriers as well as methods of using such , cells and carriers in the treatment of a disease related a microorganism the , treatment of a tumour , and/or for the presentation of an antigen to a host.
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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 September 3, 1999 and granted December 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 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
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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.