Expired Canadian patentCanada
Intranasal formulations for treating sexual disorders
CA 2275554 C · Owner: Marshall, Peter Vallance · Inventors: Dunn, Peter James; Marshall, Peter Vallance; Henry, Brian Thomas
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Intranasal formulations of sildenafil mesylate for the treatment of male erectile, dysfunction or female sexual disorders.
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 June 18, 1999 and granted June 3, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.
FiledJune 18, 1999
GrantedJune 3, 2003
Term endedJune 18, 2019
Patent numberCA 2275554 C
Classification (IPC)C07D487/04 +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.