Plaster containing estradiol
CA 2209711 C · Owner: Seibertz, Frank · Inventors: Meconi, Reinhold; Seibertz, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An active substance-containing patch for the controlled release of estradiol or its pharmaceutically acceptable derivatives alone or combined with gestagens, comprising a backing layer an active, substance-containing reservoir which is bonded thereto and produced by using pressure-sensitive adhesives and a removable, protective layer, is characterized by the fact that the pressuresensitive adhesive comprises ethylcellulose esters of non-hydro-, genated and/or hydrogenated colophony and lauric acid.
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 December 18, 1995 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2017.
- 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.