US 8,582,789 · Application 12/157,092 · Granted Nov 12, 2013
US 8,582,789
Hearing enhancement systems
Estimated expiration
April 7, 2026
Expired 183 days ago
Earliest effective filing
Apr 15, 2004
+ 20 years
Apr 15, 2024
PTA +955d
Nov 26, 2026
TD cap (US 7,388,962)
Apr 7, 2026
Final
Apr 7, 2026
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 6, 2008
- Earliest effective filing
- April 15, 2004
- Issue date
- November 12, 2013
- PTA
- +955 days
- Base expiry (before PTA)
- April 15, 2024
April 15, 2004 + 20 years = April 15, 2024 + 955 PTA days = November 26, 2026
- Continuation of application 10/826,527, filed Apr 15, 2004, issued as US 7,388,962
- PRO60/462,570 — Provisional — not used for base term
- PRO60/469,221 — Provisional — not used for base term
- PRO60/493,441 — Provisional — not used for base term
- PRO60/462,570 — Provisional — not used for base term
- PRO60/469,221 — Provisional — not used for base term
- PRO60/493,441 — Provisional — not used for base term
Terminal disclaimers
TD caps expiration to April 7, 2026 (earliest expiring referenced patent: US 7,388,962)
US 7,388,962· Application 10/826,527Capping patent
Directional hearing enhancement systems
- Filing date
- Apr 15, 2004
- Earliest effective filing
- Apr 15, 2004
- Issue date
- Jun 17, 2008
- PTA
- +722 days
- Calculated expiration
- Apr 7, 2026
Apr 15, 2004 + 20y + 722d PTA = Apr 7, 2026
US 8,582,789· Application 12/157,092(from application 12/157,092)
Hearing enhancement systems
- Filing date
- Jun 6, 2008
- Earliest effective filing
- Apr 15, 2004
- Issue date
- Nov 12, 2013
- PTA
- +955 days
- Calculated expiration
- Nov 26, 2026
Continuation of 10/826,527, filed Apr 15, 2004, issued as US 7,388,962
Apr 15, 2004 + 20y + 955d PTA = Nov 26, 2026
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
The prosecution record for your AI
Application 12/157,092 · US 8,582,789
You have the date. Your AI can have the file.
PatentReply compiles the prosecution history behind US 8,582,789: the claims as filed and as allowed, every Office Action and response, and the cited references, with each answer pointing back to the filed passage.
One new public application a month is free. The first compile takes a few minutes.
Strategy and filing changes require your approval.
Permanent link
www.patentreply.ai/tools/patent-expiration/US8582789Data 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.