US 12,670,302 · Application 18/255,045 · Granted Jun 30, 2026
US 12,670,302
Method and apparatus for optimizing lithography quality, electronic device, medium and program product
Estimated expiration
August 18, 2043
16y 312d remaining
- Could not fetch continuity data for application PCTCN2021127864: Resource not found (404)
Earliest effective filing
Nov 1, 2021
+ 20 years
Nov 1, 2041
PTA +655d
Aug 18, 2043
No TD
—
Final
Aug 18, 2043
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
- May 30, 2023
- Earliest effective filing
- November 1, 2021
- Issue date
- June 30, 2026
- PTA
- +655 days
- Base expiry (before PTA)
- November 1, 2041
November 1, 2021 + 20 years = November 1, 2041 + 655 PTA days = August 18, 2043
- National stage entry of application PCTCN2021127864, filed Nov 1, 2021
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 18/255,045 · US 12,670,302
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www.patentreply.ai/tools/patent-expiration/US12670302Data 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.