Lapsed Aug 23, 2019 on the fee record · High confidence
20-year base term ends Mar 12, 2029
Second maintenance fee unpaid; grace period ended.
Held by KMW Inc.
Filed Mar 12, 2009 as application 12/402,593 · Granted Aug 23, 2011
Base term, 20 years from filing, plus 168 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 23, 2019
2009
2029
Clock starts
Mar 12, 2009
Mar 12, 2009
No longer in force
Aug 23, 2019
Aug 23, 2019
Granted
Aug 23, 2011
Aug 23, 2011
Term would have run to
Aug 27, 2029
Aug 27, 2029
base term
patent term adjustment
after the term ends
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
168
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
19
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 27, 2029: its 20-year base term plus 168 days of term adjustment for prosecution delay. 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 12, 2009, when this application, 12/402,593, was filed | Mar 12, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +168 days, USPTO patent term adjustment record | Aug 27, 2029 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Aug 23, 2019 | High confidence |
| Computed term end | The steps above, in order | Aug 23, 2019 | High confidence |
This family
| US 7,177,667 | Lapsed on the fee record Feb 2019 | Feb 2019 |
| US 7,234,948 | Lapsed on the fee record Jun 2019 | Jun 2019 |
| US 8,046,027 | In force no later than Jan 2029 | no later than Jan 2029 |
| Application 12/006,996 | Abandoned not computed | not computed |
| US 7,564,323 | Term ended Nov 2025 | Nov 2025 |
| US 7,605,674 | Lapsed on the fee record Oct 2017 | Oct 2017 |
| US 8,004,844 | this patent Aug 2019 | Aug 2019 |
| Application 12/484,379 | Abandoned not computed | not computed |
8 of 19 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Mar 16, 2009 Reel 22410, frame 63 | Kim, Duk-yong; Lee, Jung-pil; Kim, Kyoung-seuk; Yoo, Chang-woo; Jang, Sung-ho | KMW Inc. | Assignment of Assignor's 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 168 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
15
later US patents cite this one
That is above the median of utility patents granted in 2011 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.