Expired Canadian patentCanada
Benzenesulphonamide derivatives, method for production and use thereof for treatment of pain
CA 2519110 C · Owner: Bondoux, Michel · Inventors: Bondoux, Michel; Thomas, Didier; Barth, Martine
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 invention relates to novel benzenesulphonamide compounds as defined in formula (I) and the description the method for preparation and therapeutic use thereof.
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 24, 2004 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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.
FiledMarch 24, 2004
GrantedSeptember 18, 2012
Term endedMarch 24, 2024
Patent numberCA 2519110 C
Classification (IPC)C07D417/04 +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.