Wednesday, July 8, 2026

Patent intelligence · US

US 6887675

Tankyrase H, compositions involved in the cell cycle and methods of use

expired A61KA61K38/00
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 373
Patent details — US 6887675

Quick answer

US 6887675 (Tankyrase H, compositions involved in the cell cycle and methods of use) is held by Rigel Pharmaceuticals, Inc.. Status: expired. Granted May 3, 2005. Expires Apr 28, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
10
CPC classes
A61K, A61K38/00

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Frequently asked questions

What is US patent 6887675?

US 6887675 (Tankyrase H, compositions involved in the cell cycle and methods of use) is held by Rigel Pharmaceuticals, Inc.. Status: expired. Granted May 3, 2005. Expires Apr 28, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6887675?

Rigel Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 373 pharmaceutical patents for this assignee.

When does US 6887675 expire?

Our index shows an expiration date of Apr 28, 2025 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.