Wednesday, July 8, 2026

Patent intelligence · US

US 11807649

Fused tetracyclic quinazoline derivatives as inhibitors of ErbB2

granted A61PA61P35/02
Status granted
Linked drugs 3
Pipeline programs 6
Years to expiry 17
Applicant portfolio 5
Patent details — US 11807649

Quick answer

US 11807649 (Fused tetracyclic quinazoline derivatives as inhibitors of ErbB2) is held by EnLiven Therapeutics, Inc.. Status: granted. Granted Nov 7, 2023. Expires Nov 2, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
44
CPC classes
A61P, A61P35/02

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Frequently asked questions

What is US patent 11807649?

US 11807649 (Fused tetracyclic quinazoline derivatives as inhibitors of ErbB2) is held by EnLiven Therapeutics, Inc.. Status: granted. Granted Nov 7, 2023. Expires Nov 2, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11807649?

EnLiven Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 5 pharmaceutical patents for this assignee.

When does US 11807649 expire?

Our index shows an expiration date of Nov 2, 2043 (17 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.