US11612658 — Oil-in-water emulsions comprising cetalkonium chloride and methods of making and using the same
Method of Use · Assigned to Santen SAS · Expires 2026-01-27 · 0y expired
What this patent protects
This patent protects oil-in-water emulsions containing specific quaternary compounds and ammonium halides, and methods for making and using them.
USPTO Abstract
Compositions containing quaternary compounds in which the nitrogen atom is substituted by at least one alkyl group having at least 12 carbon atoms, and the composition includes at least 20% in weight by weight of the total composition, of ammonium halides in which the nitrogen atom is substituted by at least one alkyl group having at least 14 carbon atoms and more than 5%, preferably more than 7% in weight by weight of the total composition, of ammonium halides in which the nitrogen atom is substituted by at least one alkyl group having at least 16 carbon atoms. Also, ophthalmic oil-in-water emulsions containing such compositions, the ophthalmic emulsions being useful for eye care or for the treatment of eye conditions.
Drugs covered by this patent
- Sandimmune (cyclosporine) · Novartis AG (originally Sandoz)
FDA Patent Use Codes
When a patent is method-of-use, FDA lists it once per applicable indication ("U-code"). Each U-code carves out a specific therapeutic use that generic filers must either license or design around.
| Code | Description | Drug |
|---|---|---|
U-3560 |
— | Sandimmune |
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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