Multivalent meningococcal derivatized polysaccharide-protein conjugates and vaccine
CA 2524860 C · Owner: Ryall, Robert P. · Inventors: Ryall, Robert P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes derivatized polysaccharide-protein conjugates a composition comprising one or more of such derivatized polysaccharideprotein conjugates and methods of immunizing human patients with the same. The derivatized polysaccharide-protein conjugates are purified capsular polysaccharides from Neisseria meningitidis serogroups A C, W-135, and Y, derivatized, chemically activated and selectively attached to a carrier protein by means of a covalent chemical bond forming polysaccharide-protein , conjugates capable of eliciting long-lasting immunity to a variety of N. meningitidis strains.
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, 2004 and granted September 13, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2026.
- 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.