Use of hyaluronic acid polymers for mucosal delivery of vaccine antigens and adjuvants
CA 2332455 C · Owner: Fidia Advanced Biopolymers Srl · Inventors: O'Hagan, Derek; Pavesio, Alessandra
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions are provided which include hyaluronic acid derivatives in combination with vaccine antigens, and optionally adjuvants for mucosal , delivery. Also provided are methods of making the compositions as well as , methods of immunization using the same.
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 28, 1999 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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
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.