Expired Canadian patentCanada
Extruded particles containing adverse agents such as opioid antagonists to decrease drug abuse potential
CA 2519552 C · Owner: Vashi, Vijay · Inventors: Vashi, Vijay; Van Buskirk, Glenn; Huang, Hua-Pin
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed in certain embodiments is a dosage form comprising a plurality of extruded particles comprising an adverse agent or antagonist and a layer disposed about the particles.
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 April 19, 2004 and granted April 14, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 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.
FiledApril 19, 2004
GrantedApril 14, 2015
Term endedApril 19, 2024
Patent numberCA 2519552 C
Classification (IPC)A61K31/48 +2 more
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.