US 8,603,522 · Application 11/034,656 · Granted Dec 10, 2013
US 8,603,522
Nutritional supplement to treat macular degeneration
Estimated expiration
January 31, 2026
Expired 223 days ago
Earliest effective filing
Mar 23, 2001
+ 20 years
Mar 23, 2021
PTA +1775d
Jan 31, 2026
No TD
—
Final
Jan 31, 2026
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
- January 13, 2005
- Earliest effective filing
- March 23, 2001
- Issue date
- December 10, 2013
- PTA
- +1775 days
- Base expiry (before PTA)
- March 23, 2021
March 23, 2001 + 20 years = March 23, 2021 + 1775 PTA days = January 31, 2026
- Continuation of application 10/641,668, filed Aug 15, 2003
- Continuation of application 09/816,284, filed Mar 23, 2001, issued as US 6,660,297
- Continuation of application 09/816,284, filed Mar 23, 2001, issued as US 6,660,297
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
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Application 11/034,656 · US 8,603,522
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www.patentreply.ai/tools/patent-expiration/US8603522Data 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.