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 Dec 10, 2026 · High confidence
20-year base term ended Apr 18, 2025
Held by Magnolia Purple Corporation
Filed Apr 18, 2005 as application 11/107,865 · Granted Jul 14, 2009
Base term plus 601 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Apr 18, 2005
Apr 18, 2005
Term ends
Dec 10, 2026
Dec 10, 2026
Granted
Jul 14, 2009
Jul 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
601
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 601 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 Apr 18, 2005, when this application, 11/107,865, was filed | Apr 18, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +601 days, USPTO patent term adjustment record | Dec 10, 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 | Dec 10, 2026 | High confidence |
This family
| US 7,561,235 | this patent Dec 2026 | Dec 2026 |
| US 7,773,184 | Term ended Apr 2025 | Apr 2025 |
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 |
|---|---|---|---|
| Jul 13, 2005 Reel 16767, frame 29 | Ono, Kikuo | Hitachi Displays, Ltd. | Assignment of Assignor's Interest |
| Oct 14, 2011 Reel 27063, frame 19 | Hitachi Displays, Ltd. | IPS Alpha Support Co., Ltd. | Company Split Plan Transferring Fifty (50) Percent Share of Patents |
| Oct 14, 2011 Reel 27063, frame 139 | 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
Dec 2026
Term ends Dec 10, 2026. No further fees fall due before then
Note
The 601 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is above 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.