Wednesday, July 8, 2026

Patent intelligence · US

US 11559567

Dosage regimen for pegylated interferon

granted A61KA61K38/21A61K38/212A61K47/60
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 17
Applicant portfolio 95
Patent details — US 11559567
Jurisdiction
US
Status
granted
Grant date
Jan 24, 2023
Expiration
Jan 19, 2043
Claims
20
CPC classes
A61K, A61K38/21, A61K38/212, A61K47/60
View on Google Patents ↗

Quick answer

US 11559567 (Dosage regimen for pegylated interferon) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Jan 24, 2023. Expires Jan 19, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
20
CPC classes
A61K, A61K38/21, A61K38/212, A61K47/60, A61P, A61P19/00

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Frequently asked questions

What is US patent 11559567?

US 11559567 (Dosage regimen for pegylated interferon) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Jan 24, 2023. Expires Jan 19, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11559567?

PHARMAESSENTIA CORPORATION is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 95 pharmaceutical patents for this assignee.

When does US 11559567 expire?

Our index shows an expiration date of Jan 19, 2043 (17 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.