Intravaginal drug delivery devices
CA 2531640 C · Owner: Allergan Pharmaceuticals International Limited · Inventors: Malcolm, Karl; Woolfson, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an intravaginal drug delivery device comprising at least one reservoir, the, or each, reservoir containing at least one pharmacologically active agent dispersed in a carrier system; and a sheath discontinuously surrounding the at least one reservoir so that, in use, at , least part of that reservoir is directly exposed to the vaginal environment. Preferably, the sheath defines one or more holes or openings the, or each, hole or opening extending through the sheath to the at least one reservoir so , that at least part of that reservoir is exposed in use, to the vaginal , environment.
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 July 9, 2004 and granted June 18, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2026.
- 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.