US 12647259 — Patent Expiration

Room-Temperature Coherent Spin-Photon Interface and Programmable Spin Arrays for Scalable Quantum Repeaters

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US 12647259

Room-temperature Coherent Spin-photon Interface And Programmable Spin Arrays For Scalable Quantum Repeaters

High Confidence

Application No. 18146085

October 4, 2044

18y 111d remaining

Earliest effective filing

Dec 23, 2022

+ 20 years

Dec 23, 2042

PTA +651d

Oct 4, 2044

No TD

—

Final

Oct 4, 2044

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

December 23, 2022

Earliest Effective Filing

December 23, 2022

Issue Date

June 2, 2026

PTA

+651 days

Base Expiry (before PTA)

December 23, 2042

December 23, 2022 + 20 years = December 23, 2042 + 651 PTA days = October 4, 2044

PRO

63323763 — Provisional — not used for base term

PRO

63293479 — Provisional — not used for base term

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.