US 12,592,329 · Application 17/787,284 · Granted Mar 31, 2026
US 12,592,329
R-t-b-based permanent magnet material, preparation method therefor and use thereof
Estimated expiration
June 13, 2041
14y 252d 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 12,198,840)
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. Terminal disclaimers can affect PTA (In re Cellect, LLC).
Calculation details
Base term
- 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 disclaimers
TD caps expiration to June 13, 2041 (earliest expiring referenced patent: US 12,198,840)
US 12,198,840· Application 17/600,102Capping 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 12,592,329· Application 17/787,284(from application 17/787,284)
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 12,198,840· Application 17/600,102(from application 17/600,102)
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
Patent term extension under 35 U.S.C. §156, which can apply to certain drug, biologic, animal drug and medical device patents, is not included in this calculation. How PTE is calculated
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Application 17/787,284 · US 12,592,329
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www.patentreply.ai/tools/patent-expiration/US12592329Data 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.