4(phenyl-piperazinyl-methyl) benzamide derivatives and their use for the treatment of pain or gastrointestinal disorders
CA 2502732 A1 · Owner: Astrazeneca Ab · Inventors: Jones, Paul; Walpole, Christopher; Brown, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of general formula (I) wherein R1 R2 and R3 are as defined in the , specification as well as salts, enantiomers thereof and pharmaceutical compositions including the compounds are prepared. They are useful in therapy in particular in the management of pain.
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 November 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.
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.