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 no later than Nov 21, 2026 · Medium confidence

Computed 20-year base term

In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Held by Magnolia Purple Corporation

Filed Oct 9, 2008 as application 12/248,381 · Granted Jan 19, 2010

Base term, 20 years from filing

Today

20 years from filing

Ends no later than Nov 21, 2026

2006 2026

Clock starts
Nov 21, 2006

Ends no later than
Nov 21, 2026

Granted
Jan 19, 2010

base term 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

None

Term adjustment

No prosecution delay on this record.

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

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.

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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 21, 2006, when application 11/602,231, the earliest non-provisional in its chain, was filed (this one was filed Oct 9, 2008)	Nov 21, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	High confidence
Terminal disclaimer cap	Disclaimer on file (approved), reference document not resolved	no cap applied, and none guessed	Medium 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	no later than Nov 21, 2026	Medium confidence

This family

US 7,234,945	In force Nov 2026	Nov 2026
US 7,455,530	In force Nov 2026	Nov 2026
US 7,648,370	this patent no later than Nov 2026	no later than Nov 2026
US 7,891,985	In force no later than Nov 2026	no later than Nov 2026

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
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

Nov 2026

Term ends no later than Nov 21, 2026. No further fees fall due before then

Note

A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed

Open question

A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 21, 2026. We will not guess the cap.

Citations

later US patents cite this one

That is below 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

This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.

Display Apparatus