US 7,552,608 · Application 12/141,427 · Granted Jun 30, 2009
US 7,552,608
Lock, key blank, and key of a hierarchical lock system
Estimated expiration
March 30, 2027
147 days remaining
Earliest effective filing
Mar 30, 2007
+ 20 years
Mar 30, 2027
PTA +0d
Mar 30, 2027
TD cap (US 7,412,860)
Mar 30, 2027
Final
Mar 30, 2027
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 18, 2008
- Earliest effective filing
- March 30, 2007
- Issue date
- June 30, 2009
- PTA
- 0 days
- Base expiry (before PTA)
- March 30, 2027
March 30, 2007 + 20 years = March 30, 2027
- Continuation-in-part of application 11/694,097, filed Mar 30, 2007, issued as US 7,412,860
Terminal disclaimers
TD caps expiration to March 30, 2027 (earliest expiring referenced patent: US 7,412,860)
US 7,412,860· Application 11/694,097Capping patent
Key blank and key
- Filing date
- Mar 30, 2007
- Earliest effective filing
- Mar 30, 2007
- Issue date
- Aug 19, 2008
- PTA
- 0 days
- Calculated expiration
- Mar 30, 2027
Mar 30, 2007 + 20y = Mar 30, 2027
US 7,552,608· Application 12/141,427(from application 12/141,427)
Lock, key blank, and key of a hierarchical lock system
- Filing date
- Jun 18, 2008
- Earliest effective filing
- Mar 30, 2007
- Issue date
- Jun 30, 2009
- PTA
- 0 days
- Calculated expiration
- Mar 30, 2027
Continuation-in-part of 11/694,097, filed Mar 30, 2007, issued as US 7,412,860
Mar 30, 2007 + 20y = Mar 30, 2027
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 12/141,427 · US 7,552,608
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Permanent link
www.patentreply.ai/tools/patent-expiration/US7552608Data 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.