US 12592329 — Patent Expiration

R-T-B-BASED PERMANENT MAGNET MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF

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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 12592329

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

High Confidence

Application No. 17787284

June 13, 2041

14y 348d remaining

Could not fetch continuity data for application PCTCN2021088321: Resource not found (404)

Earliest effective filing

Apr 20, 2021

+ 20 years

Apr 20, 2041

PTA +457d

Jul 21, 2042

TD cap (US 12198840)

Jun 13, 2041

Final

Jun 13, 2041

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

June 17, 2022

Earliest Effective Filing

April 20, 2021

Issue Date

March 31, 2026

PTA

+457 days

Base Expiry (before PTA)

April 20, 2041

April 20, 2021 + 20 years = April 20, 2041 + 457 PTA days = July 21, 2042

National Stage Entry of application PCTCN2021088321, filed Apr 20, 2021

Terminal Disclaimer Analysis

TD Approved

1 approved, 1 filed

TD caps expiration to June 13, 2041 (earliest expiring referenced patent: US 12198840)

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 12592329(App. 17787284)(from app 17787284)

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

Filing Date

Jun 17, 2022

Earliest Effective Filing

Apr 20, 2021

Issue Date

Mar 31, 2026

PTA

+457 days

Calculated Expiration

Jul 21, 2042

National Stage Entry of PCTCN2021088321, filed Apr 20, 2021

Apr 20, 2021 + 20y + 457d PTA = Jul 21, 2042

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.