Therapeutic compounds
CA 2319627 A1 · Owner: Monash University · Inventors: Subasinghe, Kamani Rupika; Boura, Alan Louis; Jackson, Roy William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to novel structural analogues and derivatives of compounds with general analgesic or related pharmacological activity. In particular the invention relates to derivatives of opioid compounds particularly morphine and related compounds in which an opioid compound is , linked via the nitrogen at position 17 to a spacer group which in turn is , linked to a charged group or a pharmaceutically acceptable salt thereof. In particularly preferred embodiments the opioid compound is morphine codeine or , buprenorphine.
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 January 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2021.
- 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.