www.patentreply.ai/tools/patent-expiration/US7520288Important: 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 how PTE is calculatedCleaning Machine
Application No. 10920967
January 10, 2026
Expired 201 days agoEarliest effective filing
Aug 18, 2004
+ 20 years
Aug 18, 2024
PTA +510d
Jan 10, 2026
No TD
—
Final
Jan 10, 2026
Filing Date
August 18, 2004
Earliest Effective Filing
August 18, 2004
Issue Date
April 21, 2009
PTA
+510 days
Base Expiry (before PTA)
August 18, 2024
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.