Lapsed Jan 12, 2022 on the fee record · High confidence
20-year base term ended Jan 20, 2025
Third maintenance fee unpaid; grace period ended.
Filed Jan 20, 2005 as application 11/039,428 · Granted Jan 12, 2010
Base term, 20 years from filing, plus 101 days of patent term adjustment (USPTO delay)
Today
Lapsed Jan 12, 2022
2005
2026
Clock starts
Jan 20, 2005
Jan 20, 2005
No longer in force
Jan 12, 2022
Jan 12, 2022
Granted
Jan 12, 2010
Jan 12, 2010
Term would have run to
May 1, 2025
May 1, 2025
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
101
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
24
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 May 1, 2025: its 20-year base term plus 101 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 Jan 20, 2005, when this application, 11/039,428, was filed | Jan 20, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +101 days, USPTO patent term adjustment record | May 1, 2025 | 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 | 2 of 3 maintenance fees paid | lapsed Jan 12, 2022 | High confidence |
| Computed term end | The steps above, in order | Jan 12, 2022 | High confidence |
This family
| US 6,933,188 | Lapsed on the fee record Aug 2017 | Aug 2017 |
| US 7,094,669 | Term ended Aug 2024 | Aug 2024 |
| US 9,318,378 | In force Aug 2029 | Aug 2029 |
| US 7,445,874 | Lapsed on the fee record Nov 2020 | Nov 2020 |
| Application 10/990,180 | Abandoned not computed | not computed |
| Application 10/992,447 | Abandoned not computed | not computed |
| US 7,332,422 | Lapsed on the fee record Feb 2020 | Feb 2020 |
| US 7,645,687 | this patent Jan 2022 | Jan 2022 |
8 of 24 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 |
|---|---|---|---|
| Jan 20, 2005 Reel 16202, frame 34 | Chong, Yung Fu; Sohn, Dong Kyun; Ang, Chew Hoe; Verma, Purakh Raj | Chartered Semiconductor Manufacturing Ltd. | Assignment of Assignor's Interest |
| Jun 14, 2007 Reel 19446, frame 37 | Chong, Yung Fu; Sohn, Dong Kyun; Ang, Chew-hoe; Verma, Purakh Raj; Hsia, Liang Choo | Chartered Semiconductor Manufacturing Ltd. | Corrective Coversheet to Add the 5TH Conveying Party That Was Omitted on Assignment Previously Recorded on Reel 016202, Frame 0034. |
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 101 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2010 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.