US 12,516,895 · Application 18/109,678 · Granted Jan 6, 2026
US 12,516,895
Apparatus and methods for self-cleaning and maintaining hvac heat transfer coils
Estimated expiration
January 24, 2044
17y 137d remaining
Earliest effective filing
Feb 14, 2023
+ 20 years
Feb 14, 2043
PTA +344d
Jan 24, 2044
No TD
—
Final
Jan 24, 2044
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 14, 2023
- Earliest effective filing
- February 14, 2023
- Issue date
- January 6, 2026
- PTA
- +344 days
- Base expiry (before PTA)
- February 14, 2043
February 14, 2023 + 20 years = February 14, 2043 + 344 PTA days = January 24, 2044
- PRO63/310,734 — Provisional — not used for base term
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 18/109,678 · US 12,516,895
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www.patentreply.ai/tools/patent-expiration/US12516895Data 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.