US Patent

US8268848 — Cyclopropane compound

Method of Use · Assigned to Eisai R&D Management Co Ltd · Expires 2031-09-20 · 5y remaining

Vulnerability score 68/100 Moderate — design-around opportunities exist

What this patent protects

A cyclopropane compound represented by the following formula (A) or a pharmaceutically acceptable salt thereof has orexin receptor antagonism, and therefore has a potential use for the treatment of sleep disorder for which orexin receptor antagonism is effective, for example, ins…

USPTO Abstract

A cyclopropane compound represented by the following formula (A) or a pharmaceutically acceptable salt thereof has orexin receptor antagonism, and therefore has a potential use for the treatment of sleep disorder for which orexin receptor antagonism is effective, for example, insomnia: wherein Q represents —CH— or a nitrogen atom, R1a and R1b each independently represent a C1-6 alkyl group and the like, R1c represents a hydrogen atom and the like, R2a, R2b, R2c and R2d each independently represent a hydrogen atom, a halogen atom, a C1-6 alkyl group and the like, R3a, R3b and R3c each independently represent a hydrogen atom, a halogen atom and the like, and R3d represents a hydrogen atom and the like.

Drugs covered by this patent

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.

CodeDescriptionDrug
U-2791 — Dayvigo
U-2791 — Dayvigo

Patent Metadata

Patent number
US8268848
Jurisdiction
US
Classification
Method of Use
Expires
2031-09-20
Drug substance claim
Yes
Drug product claim
Yes
Assignee
Eisai R&D Management Co Ltd
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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