US 8603522 — Patent Expiration

Nutritional supplement to treat macular degeneration

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Important: This calculator does not include patent term extension under 35 U.S.C. § 156, which may apply to certain drug, biologic, animal drug, and medical device patents.

Learn how PTE is calculated

US 8603522

Nutritional Supplement To Treat Macular Degeneration

High Confidence

Application No. 11034656

January 31, 2026

Expired 177 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 Calculation

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 10641668, filed Aug 15, 2003

Continuation of application 09816284, filed Mar 23, 2001, issued as US 6660297

Terminal Disclaimer Analysis

No TD

0 approved, 0 filed

Who owns this patent?

Data 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.