US 6,660,297 · Application 09/816,284 · Granted Dec 9, 2003
US 6,660,297
Nutritional supplement to treat macular degeneration
Estimated expiration
March 23, 2021
Expired 1997 days ago
Earliest effective filing
Mar 23, 2001
+ 20 years
Mar 23, 2021
PTA +0d
Mar 23, 2021
No TD
—
Final
Mar 23, 2021
This calculation includes patent term adjustment (PTA) under 35 U.S.C. §154(b). Patent term extension (PTE) under 35 U.S.C. §156 (for FDA-regulated products) is not included.
Calculation details
Base term
- Filing date
- March 23, 2001
- Earliest effective filing
- March 23, 2001
- Issue date
- December 9, 2003
- PTA
- 0 days
- Base expiry (before PTA)
- March 23, 2021
March 23, 2001 + 20 years = March 23, 2021
Continuity chain
No continuity chain; the patent’s own filing date was used.
Terminal disclaimers
Patent term extension under 35 U.S.C. §156, which can apply to certain drug, biologic, animal drug and medical device patents, is not included in this calculation. How PTE is calculated
The prosecution record for your AI
Application 09/816,284 · US 6,660,297
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www.patentreply.ai/tools/patent-expiration/US6660297Data sourced from public USPTO records. This tool provides informational estimates and should not be relied upon as legal advice. Always verify patent expiration dates independently, especially where patent term extension, terminal disclaimers, or unusual continuity issues may apply.