Also listed on Eturbotouch Technology Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 13, 2033 · High confidence
20-year base term ends Nov 20, 2032
Held by Wistron Corporation
Filed Nov 20, 2012 as application 13/681,805 · Granted Jul 7, 2015
Base term plus 113 days of patent term adjustment (USPTO delay)
Today
2012
2033
Clock starts
Nov 20, 2012
Nov 20, 2012
Term ends
Mar 13, 2033
Mar 13, 2033
Granted
Jul 7, 2015
Jul 7, 2015
base term
patent term adjustment
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
113
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.
This patent's term runs 113 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 Nov 20, 2012, when this application, 13/681,805, was filed | Nov 20, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +113 days, USPTO patent term adjustment record | Mar 13, 2033 | 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 | Mar 13, 2033 | High confidence |
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 |
|---|---|---|---|
| Nov 20, 2012 Reel 29330, frame 294 | Wang, Kuei-ching; Lin, Ta-hu | Eturbotouch Technology, Inc. | Assignment of Assignor's Interest |
| Mar 12, 2013 Reel 29978, frame 339 | Eturbotouch Technology Inc. | Wistron Corporation; Eturbotouch Technology Inc. | Assignment of Assignor's Interest |
| Mar 12, 2013 reel/frame not recorded | Eturbotouch Technology Inc. | Wistron Corporation | Assignment of Assignor's Interest |
| Mar 12, 2013 reel/frame not recorded | Eturbotouch Technology Inc. | Eturbotouch Technology Inc. | Assignment of Assignor's Interest |
| Jun 3, 2021 Reel 56430, frame 92 | Eturbotouch Technology Inc. | Wistron Corporation | Assignment of Assignor's Interest |
| Jul 23, 2021 Reel 57043, frame 583 | Eturbotouch Technology Inc. | Wistron Corporation | Corrective Assignment to Correct the Receiving Party Street Address Also Cit Previously Recorded at Reel: 56430 Frame: 092. Assignor(S) Hereby Confirms the Assignment. |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Mar 2033
Term ends Mar 13, 2033. No further fees fall due before then
Note
The 113 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
5
later US patents cite this one
That is below the median of utility patents granted in 2015 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.