Transdermal patch incorporating active agent migration barrier layer
CA 2638743 C · Owner: Mylan Technologies, Inc. · Inventors: Miller, Kenneth J. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Devices (100) for administration of one or more active agents to the skin or mucosa of a host are formed in the nature of a double-disk patch (100). One outer layer (110) functions as the primary adhesive layer for adhering the patch (100) to the host. The other inner layer (122) contains at least one active agent to be administered to the host. The inner layer (122) is bonded to the outer layer (110) through an opening (114) provided in an interposed active agent impermeable release layer (104). The release layer (104) separates a circumferential portion of the active agent containing inner layer (122) from the outer adhesive layer (220) to inhibit migration of the active agent …
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 26, 2004 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 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.