Also listed on Tianma Micro-Electronics Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 23, 2026 · High confidence
20-year base term ended Mar 4, 2025
Filed Mar 4, 2005 as application 11/071,211 · Granted Apr 14, 2009
Base term plus 629 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Mar 4, 2005
Mar 4, 2005
Term ends
Nov 23, 2026
Nov 23, 2026
Granted
Apr 14, 2009
Apr 14, 2009
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
629
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 629 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 Mar 4, 2005, when this application, 11/071,211, was filed | Mar 4, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +629 days, USPTO patent term adjustment record | Nov 23, 2026 | 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 | Nov 23, 2026 | 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 |
|---|---|---|---|
| Mar 4, 2005 Reel 16349, frame 410 | Takeda, Hiroshi | NEC LCD Technologies, Ltd. | Assignment of Assignor's Interest |
| Nov 8, 2011 Reel 27189, frame 174 | NEC LCD Technologies, Ltd. | NLT Technologies, Ltd. | Change of Name |
| May 15, 2019 Reel 49188, frame 536 | NLT Technologies, Ltd. | Tianma Japan, Ltd. | Change of Name |
| May 16, 2019 Reel 49203, frame 605 | Tianma Japan, Ltd. | Tianma Micro-Electronics Co., Ltd. | Assignment of Assignor's Interest |
| Jul 1, 2019 Reel 49644, frame 278 | Tianma Micro-Electronics Co., Ltd. | Shenzhen Techvisum Technologies Limited | Assignment of Assignor's Interest |
| Jul 3, 2019 Reel 49675, frame 165 | Shenzhen Techvisum Technologies Limited | Beihai Huike Photoelectric Technology Co., Ltd. | Assignment of Assignor's Interest |
| Sep 11, 2019 Reel 50347, frame 537 | Shenzhen Techvisum Technologies Limited | Beihai HKC Optoelectronics Technology Co., Ltd. | Corrective Assignment to Correct the Receiving Party Name and Address Previously Recorded at Reel: 49675 Frame: 165. 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.
What's changing
Nov 2026
Term ends Nov 23, 2026. No further fees fall due before then
Note
The 629 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
6
later US patents cite this one
That is below the median of utility patents granted in 2009 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.