Wednesday, July 8, 2026

Patent intelligence · US

US 6172061

Pharmaceutical composition for antagonizing CCR5 comprising anilide derivative

expired A61KA61K31/335A61K31/351A61K31/452
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 1,436
Patent details — US 6172061
Jurisdiction
US
Status
expired
Grant date
Jan 9, 2001
Expiration
Jan 4, 2021
Claims
37
CPC classes
A61K, A61K31/335, A61K31/351, A61K31/452
View on Google Patents ↗

Quick answer

US 6172061 (Pharmaceutical composition for antagonizing CCR5 comprising anilide derivative) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Jan 9, 2001. Expires Jan 4, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
37
CPC classes
A61K, A61K31/335, A61K31/351, A61K31/452, A61K31/4523, A61K31/5377

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Frequently asked questions

What is US patent 6172061?

US 6172061 (Pharmaceutical composition for antagonizing CCR5 comprising anilide derivative) is held by Takeda Chemical Industries Ltd.. Status: expired. Granted Jan 9, 2001. Expires Jan 4, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6172061?

Takeda Chemical Industries Ltd. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 1,436 pharmaceutical patents for this assignee.

When does US 6172061 expire?

Our index shows an expiration date of Jan 4, 2021 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.