US 12647189 — Patent Expiration

METHOD AND SYSTEM FOR AUTHENTICATING AN OPTICAL FIBER KEY

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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 more about PTE and patent expiration

US 12647189

Method And System For Authenticating An Optical Fiber Key

High Confidence

Application No. 18187838

August 25, 2043

17y 54d remaining

Earliest effective filing

Mar 22, 2023

+ 20 years

Mar 22, 2043

PTA +156d

Aug 25, 2043

No TD

—

Final

Aug 25, 2043

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

March 22, 2023

Earliest Effective Filing

March 22, 2023

Issue Date

June 2, 2026

PTA

+156 days

Base Expiry (before PTA)

March 22, 2043

March 22, 2023 + 20 years = March 22, 2043 + 156 PTA days = August 25, 2043

No continuity chain — used own filing date.

Terminal Disclaimer Analysis

No TD

0 approved, 0 filed

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.