Also listed on Powerchip Technology Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 4, 2028 · High confidence
20-year base term ends Aug 8, 2027
Filed Aug 8, 2007 as application 11/836,093 · Granted Dec 21, 2010
Base term plus 180 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Aug 8, 2007
Aug 8, 2007
Term ends
Feb 4, 2028
Feb 4, 2028
Granted
Dec 21, 2010
Dec 21, 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
180
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.
2
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 180 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 8, 2007, when this application, 11/836,093, was filed | Aug 8, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +180 days, USPTO patent term adjustment record | Feb 4, 2028 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 4, 2028 | High confidence |
This family
| US 7,855,378 | this patent Feb 2028 | Feb 2028 |
| US 8,242,034 | In force Oct 2027 | Oct 2027 |
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 |
|---|---|---|---|
| Aug 14, 2007 Reel 19697, frame 298 | Lin, Yung-fa; Wang, Te-chun | Industrial Technology Research Institute; Powerchip Semiconductor Corp.; Nanya Technology Corporation; Promos Technologies Inc.; Winbond Electronics Corp. | Assignment of Assignor's Interest |
| Aug 14, 2007 reel/frame not recorded | Lin, Yung-fa; Wang, Te-chun | Industrial Technology Research Institute | Assignment of Assignor's Interest |
| Aug 14, 2007 reel/frame not recorded | Lin, Yung-fa; Wang, Te-chun | Powerchip Semiconductor Corp. | Assignment of Assignor's Interest |
| Aug 14, 2007 reel/frame not recorded | Lin, Yung-fa; Wang, Te-chun | Nanya Technology Corporation | Assignment of Assignor's Interest |
| Aug 14, 2007 reel/frame not recorded | Lin, Yung-fa; Wang, Te-chun | Promos Technologies Inc. | Assignment of Assignor's Interest |
| Aug 14, 2007 reel/frame not recorded | Lin, Yung-fa; Wang, Te-chun | Winbond Electronics Corp. | Assignment of Assignor's Interest |
| Mar 28, 2010 Reel 24149, frame 97 | Industrial Technology Research Institute; Nanya Technology Corporation; Promos Technologies Inc.; Winbond Electronics Corp. | Powerchip Semiconductor Corp. | Assignment of Assignor's Interest |
| Jun 26, 2019 Reel 49602, frame 564 | Powerchip Semiconductor Corp. | Powerchip Technology Corporation | Change of Name |
| Jul 16, 2019 Reel 49770, frame 90 | Powerchip Technology Corporation | Powerchip Semiconductor Manufacturing Corporation | 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.
What's changing
Feb 2028
Term ends Feb 4, 2028. No further fees fall due before then
Note
The 180 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
21
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.