US 12424359 — Patent Expiration

R-T-B SERIES PERMANENT MAGNET MATERIAL, RAW MATERIAL COMPOSITION PREPARATION METHOD AND APPLICATION

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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 12424359

R-t-b Series Permanent Magnet Material, Raw Material Composition Preparation Method And Application

High Confidence

Application No. 17630596

August 9, 2040

14y 40d remaining

Could not fetch continuity data for application PCTCN2020100574: Resource not found (404)

Earliest effective filing

Jul 7, 2020

+ 20 years

Jul 7, 2040

PTA +33d

Aug 9, 2040

TD applied

Aug 9, 2040

Final

Aug 9, 2040

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. Note: terminal disclaimers can affect PTA (In re Cellect, LLC).

Calculation Details

Base Term Calculation

Filing Date

January 27, 2022

Earliest Effective Filing

July 7, 2020

Issue Date

September 23, 2025

PTA

+33 days

Base Expiry (before PTA)

July 7, 2040

July 7, 2020 + 20 years = July 7, 2040 + 33 PTA days = August 9, 2040

National Stage Entry of application PCTCN2020100574, filed Jul 7, 2020

Terminal Disclaimer Analysis

TD Approved

1 approved, 1 filed

TD caps expiration to August 9, 2040

US 12198840(App. 17600102)

Capping Patent

Rare Earth Permanent Magnet Material And Raw Material Composition,preparation Method Therefor And Use Thereof

Filing Date

Sep 30, 2021

Earliest Effective Filing

Jul 22, 2020

Issue Date

Jan 14, 2025

PTA

+326 days

Calculated Expiration

Jun 13, 2041

National Stage Entry of PCTCN2020103430, filed Jul 22, 2020

Jul 22, 2020 + 20y + 326d PTA = Jun 13, 2041

US 12424359(App. 17630596)(from app 17630596)

Capping Patent

R-t-b Series Permanent Magnet Material, Raw Material Composition Preparation Method And Application

Filing Date

Jan 27, 2022

Earliest Effective Filing

Jul 7, 2020

Issue Date

Sep 23, 2025

PTA

+33 days

Calculated Expiration

Aug 9, 2040

National Stage Entry of PCTCN2020100574, filed Jul 7, 2020

Jul 7, 2020 + 20y + 33d PTA = Aug 9, 2040

US 12609224(App. 17639366)(from app 17639366)

Neodymium-iron-boron Magnet Material, Raw Material Composition,preparation Method Therefor And Use Thereof

Filing Date

Mar 1, 2022

Earliest Effective Filing

Jul 7, 2020

Issue Date

Apr 21, 2026

PTA

+929 days

Calculated Expiration

Jan 22, 2043

National Stage Entry of PCTCN2020100588, filed Jul 7, 2020

Jul 7, 2020 + 20y + 929d PTA = Jan 22, 2043

US 12531174(App. 17600106)(from app 17600106)

R-t-b-based Permanent Magnet Material, Preparation Method Therefor And Use Thereof

Filing Date

Sep 30, 2021

Earliest Effective Filing

Jul 7, 2020

Issue Date

Jan 20, 2026

PTA

+246 days

Calculated Expiration

Mar 10, 2041

National Stage Entry of PCTCN2020100585, filed Jul 7, 2020

Jul 7, 2020 + 20y + 246d PTA = Mar 10, 2041

US 12198840(App. 17600102)(from app 17600102)

Rare Earth Permanent Magnet Material And Raw Material Composition,preparation Method Therefor And Use Thereof

Filing Date

Sep 30, 2021

Earliest Effective Filing

Jul 22, 2020

Issue Date

Jan 14, 2025

PTA

+326 days

Calculated Expiration

Jun 13, 2041

National Stage Entry of PCTCN2020103430, filed Jul 22, 2020

Jul 22, 2020 + 20y + 326d PTA = Jun 13, 2041

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.