US 12,431,268 · Application 17/637,522 · Granted Sep 30, 2025
US 12,431,268
R-t-b permanent magnet material and preparation method therefor and use thereof
Estimated expiration
March 2, 2042
15y 149d remaining
- Could not fetch continuity data for application PCTCN2020100590: Resource not found (404)
Earliest effective filing
Jul 7, 2020
+ 20 years
Jul 7, 2040
PTA +603d
Mar 2, 2042
No TD
—
Final
Mar 2, 2042
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
- Filing date
- February 23, 2022
- Earliest effective filing
- July 7, 2020
- Issue date
- September 30, 2025
- PTA
- +603 days
- Base expiry (before PTA)
- July 7, 2040
July 7, 2020 + 20 years = July 7, 2040 + 603 PTA days = March 2, 2042
- National stage entry of application PCTCN2020100590, filed Jul 7, 2020
Terminal disclaimers
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 17/637,522 · US 12,431,268
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www.patentreply.ai/tools/patent-expiration/US12431268Data 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.