US 10381139 — Patent Expiration

W-CONTAINING R-FE-B-CU SINTERED MAGNET AND QUENCHING ALLOY

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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 10381139

W-containing R-fe-b-cu Sintered Magnet And Quenching Alloy

High Confidence

Application No. 15185430

November 25, 2035

9y 146d remaining

Could not fetch continuity data for application PCTCN2015075512: Resource not found (404)

Earliest effective filing

Mar 31, 2015

+ 20 years

Mar 31, 2035

PTA +239d

Nov 25, 2035

No TD

—

Final

Nov 25, 2035

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

June 17, 2016

Earliest Effective Filing

March 31, 2015

Issue Date

August 13, 2019

PTA

+239 days

Base Expiry (before PTA)

March 31, 2035

March 31, 2015 + 20 years = March 31, 2035 + 239 PTA days = November 25, 2035

Continuation of application PCTCN2015075512, filed Mar 31, 2015

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.