Patent intelligence · US
US 6355648
Thio-oxindole derivatives
Thio-oxindole derivatives
Patent details — US 6355648
- Jurisdiction
- US
- Status
- expired
- Grant date
- Mar 12, 2002
- Expiration
- Mar 7, 2022
- Applicant
- Ligand Pharmaceuticals Incorporated
- Claims
- 116
- CPC classes
- A61P, A61P1/00, A61P13/08, A61P15/00
Quick answer
US 6355648 (Thio-oxindole derivatives) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Mar 12, 2002. Expires Mar 7, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Ligand Pharmaceuticals Incorporated
- Grant date
- Expiration
- Claims
- 116
- CPC classes
- A61P, A61P1/00, A61P13/08, A61P15/00, A61P35/00, A61P43/00
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Frequently asked questions
What is US patent 6355648?
US 6355648 (Thio-oxindole derivatives) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Mar 12, 2002. Expires Mar 7, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6355648?
Ligand Pharmaceuticals Incorporated is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 133 pharmaceutical patents for this assignee.
When does US 6355648 expire?
Our index shows an expiration date of Mar 7, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.