Wednesday, July 8, 2026

Patent intelligence · US

US 9518091

A4B7 peptide monomer and dimer antagonists

granted A61KA61K38/00A61PA61P1/00
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 10
Applicant portfolio 33
Patent details — US 9518091
Jurisdiction
US
Status
granted
Grant date
Dec 13, 2016
Expiration
Dec 8, 2036
Claims
21
CPC classes
A61K, A61K38/00, A61P, A61P1/00
View on Google Patents ↗

Quick answer

US 9518091 (A4B7 peptide monomer and dimer antagonists) is held by Protagonist Therapeutics, Inc.. Status: granted. Granted Dec 13, 2016. Expires Dec 8, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
21
CPC classes
A61K, A61K38/00, A61P, A61P1/00, A61P1/04, A61P1/16

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Frequently asked questions

What is US patent 9518091?

US 9518091 (A4B7 peptide monomer and dimer antagonists) is held by Protagonist Therapeutics, Inc.. Status: granted. Granted Dec 13, 2016. Expires Dec 8, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9518091?

Protagonist Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 33 pharmaceutical patents for this assignee.

When does US 9518091 expire?

Our index shows an expiration date of Dec 8, 2036 (10 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.