Expired Canadian patentCanada
Piperazinyl and diazapanyl benzamides and benzthioamides
CA 2504269 C · Owner: Ly, Kiev S. · Inventors: Shah, Chandravadan R.; Ly, Kiev S.; Xiao, Wei
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted piperazinyl and diazepanyl benzamides and benzthioamides of formula (I), compositions containing them and methods of making and using , them to treat histamine-mediated conditions.
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 October 21, 2003 and granted January 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 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.
FiledOctober 21, 2003
GrantedJanuary 17, 2012
Term endedOctober 21, 2023
Patent numberCA 2504269 C
Classification (IPC)C07D295/18 +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.