The Patent Finder
US

Walk Behind Lawn Mower Control System

US 7,647,754 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Jun 12, 2020 (M&T Bank).

Term ends Nov 21, 2026 · High confidence

Filed Aug 22, 2005 as application 11/208,002 · Granted Jan 19, 2010
Base term plus 456 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2005 2026
Clock starts
Aug 22, 2005
Term ends
Nov 21, 2026
Granted
Jan 19, 2010
base term patent term adjustment fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
456
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
21
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 456 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Aug 22, 2005, when this application, 11/208,002, was filedAug 22, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+456 days, USPTO patent term adjustment recordNov 21, 2026High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 21, 2026High confidence

This family

US 6,560,952Term ended
Oct 2019
Oct 2019
US 6,658,831Term ended
Nov 2020
Nov 2020
US 6,688,089Term ended
no later than Oct 2019
no later than Oct 2019
US 6,935,093Lapsed on the fee record
Aug 2017
Aug 2017
US 6,935,092Term ended
Oct 2019
Oct 2019
US 7,624,996Term ended
Mar 2025
Mar 2025
US 6,868,658Term ended
Nov 2020
Nov 2020
US 7,272,920Term ended
Feb 2024
Feb 2024
8 of 21 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 22, 2005
Reel 17269, frame 148
Velke, James D.; Wright, William; Waesche, LukeWright Manufacturing, Inc.Assignment of Assignor's Interest
Jun 12, 2020
Reel 52926, frame 118
Wright Manufacturing, Inc.M&T BankSecurity Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited