Vaccines containing avirulent phop-type microorganisms
CA 2013573 C · Owner: Roy, Curtiss, Iii · Inventors: Roy, Curtiss, Iii; Galan, Jorge
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The phoP gene and its equivalents are of a type which have "global regulation of pathogenicity" i.e. they coordinately regulate a number of genes including those that encode bacterial virulence factors. In Salmonella, the phoP gene product also controls the expression of non-specific acid phosphatase from the phoN gene. A central feature of the invention are microorganisms which are avirulent as a result in whole, or in part, of a mutation in phoP but which retain their, immunogenicity. These cells are suitable as components of live vaccines.
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 March 30, 1990 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2012.
- 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.