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|Title:||Estrogen-containing active substance plaster|
|Abstract:||The present invention relates to active substance plasters for the controlled release of active substances to the skin consisting of a backing layer, an adhesive film connected therewith which film is water-soluble and consists of pressure-sensitive adhesive which comprises water-swellable polymers and in which the active substance is at least partially soluble, and of a removable protective layer covering the adhesive film, in which plasters the pressure-sensitive adhesive is based on homo and/or copolymers with at least one derivative of the acrylic or methacrylic acid, and which comprise as active substances, partially or completely dissolved in the adhesive, at a concentration of 0.5 to 10.0%-wt estrogens and their pharmaceutically acceptable derivatives alone or in combination with gestagens.|
|Inventor(s):||Hoffmann; Hans-Rainer (Neuwied, DE), Klein; Robert P. (Neuwied, DE), Meconi; Reinhold (Neuwied, DE), Cordes; Gunter (Leichingen, DE), Wolff; Hans M. (Monheim, DE)|
|Assignee:||LTS Lohmann Therapie-Systeme GmbH & Co. KG (Neuweid, DE) Schwarz Pharma AG (Monheim, DE)|
Patent Claim Types:|
see list of patent claims
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|Germany||3933460||Oct 06, 1989|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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