US Patent

US9132071 — Compositions containing quaternary ammonium compounds

Formulation · Assigned to Santen SAS · Expires 2029-06-02 · 3y remaining

Vulnerability score 48/100 Strong — defensible against typical IPR challenges

What this patent protects

This patent protects compositions containing quaternary ammonium compounds used in ophthalmic oil-in-water formulations.

USPTO Abstract

Compositions containing quaternary ammonium compounds in which the nitrogen atom is substituted by at least one alkyl group having at least 12 carbon atoms, where 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. Ophthalmic oil-in-water emulsions containing such compositions, and the ophthalmic emulsions being are useful for eye care or for the treatment of eye conditions.

Drugs covered by this patent

Patent Metadata

Patent number
US9132071
Jurisdiction
US
Classification
Formulation
Expires
2029-06-02
Drug substance claim
No
Drug product claim
Yes
Assignee
Santen SAS
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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