πŸ‡ΊπŸ‡Έ FDA
Patent

US 6521657

Thio-oxindole derivatives

expired A61PA61P1/00A61P13/08

Quick answer

US patent 6521657 (Thio-oxindole derivatives) held by Ligand Pharmaceuticals Incorporated expires Mon Feb 13 2023 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.

Key facts

Applicant
Ligand Pharmaceuticals Incorporated
Grant date
Tue Feb 18 2003 00:00:00 GMT+0000 (Coordinated Universal Time)
Expiration
Mon Feb 13 2023 00:00:00 GMT+0000 (Coordinated Universal Time)
Claims
15
CPC classes
A61P, A61P1/00, A61P13/08, A61P15/00, A61P35/00