US 7497835 — Patent Expiration

METHOD OF TREATMENT FOR AND PREVENTION OF PERIODONTAL DISEASE

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Important: This calculator does not include patent term extension under 35 U.S.C. § 156, which may apply to certain drug, biologic, animal drug, and medical device patents.

Learn more about PTE and patent expiration

US 7497835

Method Of Treatment For And Prevention Of Periodontal Disease

High Confidence

Application No. 11238730

July 31, 2026

15 days remaining

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. Note: terminal disclaimers can affect PTA (In re Cellect, LLC).

Calculation Details

Base Term Calculation

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 11122154, filed May 4, 2005, issued as US 7470240

Continuation-in-Part of application 11071156, filed Mar 4, 2005

PRO

60621028 — Provisional — not used for base term

PRO

60642149 — Provisional — not used for base term

PRO

60621028 — Provisional — not used for base term

PRO

60642149 — Provisional — not used for base term

PRO

60693143 — Provisional — not used for base term

PRO

60693369 — Provisional — not used for base term

PRO

60621028 — Provisional — not used for base term

PRO

60642149 — Provisional — not used for base term

Terminal Disclaimer Analysis

TD Approved

1 approved, 1 filed

TD caps expiration to July 31, 2026

US 7497835(App. 11238730)(from app 11238730)

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 11122154, filed May 4, 2005, issued as US 7470240

Continuation-in-Part of 11071156, filed Mar 4, 2005

Mar 4, 2005 + 20y + 514d PTA = Jul 31, 2026

US 7497834(App. 11238551)(from app 11238551)

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 11122154, filed May 4, 2005, issued as US 7470240

Continuation-in-Part of 11071156, filed Mar 4, 2005

Mar 4, 2005 + 20y + 529d PTA = Aug 15, 2026

Data 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.