Patent intelligence · US
US 6518303
2-phenylpyran-4-one derivatives
2-phenylpyran-4-one derivatives
Patent details — US 6518303
- Jurisdiction
- US
- Status
- expired
- Grant date
- Feb 11, 2003
- Expiration
- Feb 6, 2023
- Applicant
- Almirall Prodesfarma S.A.
- Claims
- 10
- CPC classes
- A61P, A61P21/00, A61P25/00, A61P25/28
Quick answer
US 6518303 (2-phenylpyran-4-one derivatives) is held by Almirall Prodesfarma S.A.. Status: expired. Granted Feb 11, 2003. Expires Feb 6, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Almirall Prodesfarma S.A.
- Grant date
- Expiration
- Claims
- 10
- CPC classes
- A61P, A61P21/00, A61P25/00, A61P25/28, A61P29/00, A61P35/00
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Frequently asked questions
What is US patent 6518303?
US 6518303 (2-phenylpyran-4-one derivatives) is held by Almirall Prodesfarma S.A.. Status: expired. Granted Feb 11, 2003. Expires Feb 6, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6518303?
Almirall Prodesfarma S.A. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 308 pharmaceutical patents for this assignee.
When does US 6518303 expire?
Our index shows an expiration date of Feb 6, 2023 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.