Expired Canadian patentCanada
Naltrexone hydrochloride compositions
CA 2478558 C · Owner: Euro-Celtique, S.A. · Inventors: Oshlack, Benjamin; Mannion, Richard; 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
The present invention relates to compositions and methods of stabilizing naltrexone hydrochloride.
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 14, 2003 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 14, 2003
GrantedSeptember 11, 2012
Term endedMarch 14, 2023
Patent numberCA 2478558 C
Classification (IPC)A61K9/20 +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.