US Patent

US9226903 — Transdermal therapeutic system comprising an adhesive layer method for siliconizing the back layer or the system and use of said back layer

Formulation · Assigned to LTS Lohmann Therapie Systeme AG · Expires 2028-12-15 · 3y remaining

Vulnerability score 55/100 Moderate — design-around opportunities exist

What this patent protects

This patent protects a method for siliconizing the backing layer of a transdermal therapeutic system, specifically one used in a product like Qutenza.

USPTO Abstract

The invention relates to a transdermal therapeutic system which comprises a backing layer, an adhesive layer, a polymer layer and a removable protective layer. The adhesive layer is an organosiloxane layer and is anchored in the backing layer by siliconization.

Drugs covered by this patent

Patent Metadata

Patent number
US9226903
Jurisdiction
US
Classification
Formulation
Expires
2028-12-15
Drug substance claim
No
Drug product claim
Yes
Assignee
LTS Lohmann Therapie Systeme AG
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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