Also listed on Panasonic Liquid Crystal Display 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 Nov 19, 2024
Held by Magnolia Purple Corporation
Filed Nov 19, 2004 as application 10/991,435 · Granted Oct 9, 2012
Base term plus 734 days of patent term adjustment (USPTO delay)
Today
2004
2026
Clock starts
Nov 19, 2004
Nov 19, 2004
Term ends
Nov 23, 2026
Nov 23, 2026
Granted
Oct 9, 2012
Oct 9, 2012
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
734
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 734 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 19, 2004, when this application, 10/991,435, was filed | Nov 19, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +734 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 |
|---|---|---|---|
| Nov 19, 2004 Reel 16017, frame 153 | Misonou, Toshiki; Maeda, Toshio; Matsumoto, Katsumi; Nakagawa, Hideki | Hitachi Displays, Ltd. | Assignment of Assignor's Interest |
| Oct 20, 2011 Reel 27092, frame 684 | Hitachi Displays, Ltd. | IPS Alpha Support Co., Ltd. | Company Split Plan Transferring Fifty (50) Percent Share in Patent Applications |
| Oct 20, 2011 Reel 27093, frame 937 | IPS Alpha Support Co., Ltd. | Panasonic Liquid Crystal Display Co., Ltd. | Merger |
| Nov 17, 2023 Reel 65614, frame 223 | Hitachi Displays, Ltd. | Japan Display East, Inc. | Change of Name |
| Nov 17, 2023 Reel 65614, frame 644 | Japan Display East, Inc. | Japan Display, Inc. | Change of Name |
| Nov 17, 2023 Reel 65615, frame 327 | Panasonic Liquid Crystal Display Co., Ltd. | Panasonic Intellectual Property Corporation of America | Nunc Pro Tunc Assignment |
| Nov 17, 2023 Reel 65654, frame 250 | Japan Display, Inc. | Japan Display, Inc. | Change of Address |
| Jul 10, 2025 Reel 71890, frame 202 | Japan Display Inc. | Magnolia Purple 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
Nov 2026
Term ends Nov 23, 2026. No further fees fall due before then
Note
The 734 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above the median of utility patents granted in 2012 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.