US 7,497,835 · Application 11/238,730 · Granted Mar 3, 2009
US 7,497,835
Method of treatment for and prevention of periodontal disease
Estimated expiration
July 31, 2026
Expired 75 days ago
Earliest effective filing
Mar 4, 2005
+ 20 years
Mar 4, 2025
PTA +514d
Jul 31, 2026
TD applied
Jul 31, 2026
Final
Jul 31, 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
- September 29, 2005
- Earliest effective filing
- March 4, 2005
- Issue date
- March 3, 2009
- PTA
- +514 days
- Base expiry (before PTA)
- March 4, 2025
March 4, 2005 + 20 years = March 4, 2025 + 514 PTA days = July 31, 2026
- Continuation-in-part of application 11/122,154, filed May 4, 2005, issued as US 7,470,240
- Continuation-in-part of application 11/071,156, filed Mar 4, 2005
- Continuation-in-part of application 11/071,156, filed Mar 4, 2005
- PRO60/621,028 — Provisional — not used for base term
- PRO60/642,149 — Provisional — not used for base term
- PRO60/621,028 — Provisional — not used for base term
- PRO60/642,149 — Provisional — not used for base term
- PRO60/693,143 — Provisional — not used for base term
- PRO60/693,369 — Provisional — not used for base term
- PRO60/621,028 — Provisional — not used for base term
- PRO60/642,149 — Provisional — not used for base term
Terminal disclaimers
TD caps expiration to July 31, 2026
US 7,497,835· Application 11/238,730(from application 11/238,730)Capping patent
Method of treatment for and prevention of periodontal disease
- Filing date
- Sep 29, 2005
- Earliest effective filing
- Mar 4, 2005
- Issue date
- Mar 3, 2009
- PTA
- +514 days
- Calculated expiration
- Jul 31, 2026
Continuation-in-part of 11/122,154, filed May 4, 2005, issued as US 7,470,240
Continuation-in-part of 11/071,156, filed Mar 4, 2005
Continuation-in-part of 11/071,156, filed Mar 4, 2005
Mar 4, 2005 + 20y + 514d PTA = Jul 31, 2026
US 7,497,834· Application 11/238,551(from application 11/238,551)
Germicidal method for eradicating or preventing the formation of biofilms
- Filing date
- Sep 29, 2005
- Earliest effective filing
- Mar 4, 2005
- Issue date
- Mar 3, 2009
- PTA
- +529 days
- Calculated expiration
- Aug 15, 2026
Continuation-in-part of 11/122,154, filed May 4, 2005, issued as US 7,470,240
Continuation-in-part of 11/071,156, filed Mar 4, 2005
Continuation-in-part of 11/071,156, filed Mar 4, 2005
Mar 4, 2005 + 20y + 529d PTA = Aug 15, 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 11/238,730 · US 7,497,835
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www.patentreply.ai/tools/patent-expiration/US7497835Data 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.