US 8,419,742 · Application 11/743,992 · Granted Apr 16, 2013
US 8,419,742
Instruments and method for preparing an intervertebral space for receiving an artificial disc implant
Estimated expiration
February 4, 2025
Expired 605 days ago
Earliest effective filing
Apr 28, 2003
+ 20 years
Apr 28, 2023
PTA +1709d
Jan 1, 2028
TD cap (US 7,491,204)
Feb 4, 2025
Final
Feb 4, 2025
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
- May 3, 2007
- Earliest effective filing
- April 28, 2003
- Issue date
- April 16, 2013
- PTA
- +1709 days
- Base expiry (before PTA)
- April 28, 2023
April 28, 2003 + 20 years = April 28, 2023 + 1709 PTA days = January 1, 2028
- Divisional of application 10/423,879, filed Apr 28, 2003, issued as US 7,491,204
Terminal disclaimers
TD caps expiration to February 4, 2025 (earliest expiring referenced patent: US 7,491,204)
US 7,491,204· Application 10/423,879Capping patent
Instruments and method for preparing an intervertebral space for receiving an artificial disc implant
- Filing date
- Apr 28, 2003
- Earliest effective filing
- Apr 28, 2003
- Issue date
- Feb 17, 2009
- PTA
- +648 days
- Calculated expiration
- Feb 4, 2025
Apr 28, 2003 + 20y + 648d PTA = Feb 4, 2025
US 8,419,742· Application 11/743,992(from application 11/743,992)
Instruments and method for preparing an intervertebral space for receiving an artificial disc implant
- Filing date
- May 3, 2007
- Earliest effective filing
- Apr 28, 2003
- Issue date
- Apr 16, 2013
- PTA
- +1709 days
- Calculated expiration
- Jan 1, 2028
Divisional of 10/423,879, filed Apr 28, 2003, issued as US 7,491,204
Apr 28, 2003 + 20y + 1709d PTA = Jan 1, 2028
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 11/743,992 · US 8,419,742
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www.patentreply.ai/tools/patent-expiration/US8419742Data 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.