Wednesday, July 8, 2026

Patent intelligence · US

US 8367734

Stable epinephrine suspension formulation with high inhalation delivery efficiency

granted A61KA61K31/137A61K9/008
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 7
Applicant portfolio 15
Related coverage 1
Patent details — US 8367734

Quick answer

US 8367734 (Stable epinephrine suspension formulation with high inhalation delivery efficiency) is held by Amphastar Pharmaceuticals, Inc.. Status: granted. Granted Feb 5, 2013. Expires Jan 31, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
13
CPC classes
A61K, A61K31/137, A61K9/008

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Frequently asked questions

What is US patent 8367734?

US 8367734 (Stable epinephrine suspension formulation with high inhalation delivery efficiency) is held by Amphastar Pharmaceuticals, Inc.. Status: granted. Granted Feb 5, 2013. Expires Jan 31, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8367734?

Amphastar Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 15 pharmaceutical patents for this assignee.

When does US 8367734 expire?

Our index shows an expiration date of Jan 31, 2033 (7 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.