Canadian application, no grantCanada
Intermediates in the preparation of therapeutic fused bicyclic amino acids
CA 2499863 A1 · Owner: Pfizer Inc. · Inventors: Pettman, Alan John; Gladwell, Iain Robert
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 presents compounds of formula (I) where R represents H or a , suitable carboxylic acid protecting group which are intermediates in the , preparation of therapeutic fused bicyclic amino acids.
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 September 22, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 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.
FiledSeptember 22, 2003
GrantedNo grant recorded
Term endedSeptember 22, 2023
Patent numberCA 2499863 A1
Classification (IPC)C07C57/26 +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.