Wednesday, June 10, 2026

Patent intelligence · US

US 2022119410

PHARMACEUTICAL COMPOSITIONS COMPRISING POLYMORPHIC FORMS ALPHA, BETA, AND GAMMA OF RIFAXIMIN

granted A61K 31/ 437 A IA61K/31437A61P/3100
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 16
Applicant portfolio 25
Patent details — US 2022119410
Jurisdiction
US
Status
granted
Grant date
Apr 21, 2022
Expiration
Apr 16, 2042
Applicant
ALFASIGMA SPA [IT]
CPC classes
A61K 31/ 437 A I, A61K/31437, A61P/3100
View on Google Patents ↗

Quick answer

US 2022119410 (PHARMACEUTICAL COMPOSITIONS COMPRISING POLYMORPHIC FORMS ALPHA, BETA, AND GAMMA OF RIFAXIMIN) is held by ALFASIGMA SPA [IT]. Status: granted. Granted Apr 21, 2022. Expires Apr 16, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Applicant
ALFASIGMA SPA [IT]
Grant date
Expiration
Claims
CPC classes
A61K 31/ 437 A I, A61K/31437, A61P/3100

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Frequently asked questions

What is US patent 2022119410?

US 2022119410 (PHARMACEUTICAL COMPOSITIONS COMPRISING POLYMORPHIC FORMS ALPHA, BETA, AND GAMMA OF RIFAXIMIN) is held by ALFASIGMA SPA [IT]. Status: granted. Granted Apr 21, 2022. Expires Apr 16, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 2022119410?

ALFASIGMA SPA [IT] is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 25 pharmaceutical patents for this assignee.

When does US 2022119410 expire?

Our index shows an expiration date of Apr 16, 2042 (16 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.