Also listed on SK hynix Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends no later than Nov 17, 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 Mimirip LLC

Filed Mar 20, 2008 as application 12/076,621 · Granted Apr 5, 2011

Base term plus 14 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Ends no later than Nov 17, 2026

2006 2026

Clock starts
Nov 3, 2006

Ends no later than
Nov 17, 2026

Granted
Apr 5, 2011

base term fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

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 runs 14 days past its 20-year base term on 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 3, 2006, when application 11/592,308, the earliest non-provisional in its chain, was filed (this one was filed Mar 20, 2008)	Nov 3, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+14 days, USPTO patent term adjustment record	Nov 17, 2026	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 17, 2026	Medium confidence

This family

US 7,385,430	Term ended Nov 2026	Nov 2026
US 7,920,008	this patent 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
Mar 20, 2008 Reel 20748, frame 106	Lee, Geun-il	Hynix Semiconductor Inc.	Assignment of Assignor's Interest
May 6, 2024 Reel 67328, frame 814	Hynix-Semiconductor Inc.	SK Hynix Inc.	Change of Name
May 9, 2024 Reel 67369, frame 832	SK Hynix Inc.	Mimirip LLC	Assignment of Assignor's Interest
May 14, 2024 Reel 67412, frame 482	Hynix Semiconductor Inc.	SK Hynix Inc.	Corrective Assignment to Correct the Assignee Is Hynix Semiconductor Inc. Not Hynix-Semiconductor Inc. There Is No Hyphen in the Name. Previously Recorded on Reel 67328 Frame 814. Assignor(S) Hereby Confirms the Change of Name.

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

Nov 2026

Term ends no later than Nov 17, 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

Note

The 14 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

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 17, 2026. We will not guess the cap.

Citations

later US patent cites this one

That is below the median of utility patents granted in 2011 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.

Data Output Clock Generating Circuit and Method of Generating Data Output Clock of Semiconductor Memory Apparatus