US Patent

US7973081 — Emulsion compositions containing quaternary ammonium compounds

Formulation · Assigned to Novagali SA · Expires 2026-01-27 · 0y expired

Vulnerability score 45/100 Strong — defensible against typical IPR challenges

What this patent protects

This patent protects a specific formulation of an ophthalmic emulsion composition containing quaternary ammonium compounds.

USPTO Abstract

Composition containing quaternary ammonium compounds in which the nitrogen atom is substituted by at least one alkyl group having at least 12 carbon atoms, the composition including 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, the ophthalmic emulsions being useful for eye care or for the treatment of eye conditions are also disclosed.

Drugs covered by this patent

Patent Metadata

Patent number
US7973081
Jurisdiction
US
Classification
Formulation
Expires
2026-01-27
Drug substance claim
No
Drug product claim
Yes
Assignee
Novagali SA
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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