Use of a secretion vector for fertility control by oral vaccination
CA 2288602 A1 · Owner: Gentschev, Ivaylo · Inventors: Demuth, Andreas; Kaufmann, Stefan; Gentschev, Ivaylo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a fertility-control method by oral vaccination using attenuated salmonellae or other gram-negative attenuated vaccination strains. Different systems of expression are used which enable a specific MHCII/CD4 or MHCI/CD8 immune response to be generated.
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 May 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2020.
- 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.