Term ended Sep 22, 2026 · High confidence
20-year base term ended Sep 22, 2026
Held by Mimirip LLC
Filed Mar 27, 2009 as application 12/412,466 · Granted Feb 8, 2011
Base term, 20 years from filing
Today
Term ended Sep 22, 2026
2006
2026
Clock starts
Sep 22, 2006
Sep 22, 2006
Term ended
Sep 22, 2026
Sep 22, 2026
Granted
Feb 8, 2011
Feb 8, 2011
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Sep 22, 2006, when application 11/525,160, the earliest non-provisional in its chain, was filed (this one was filed Mar 27, 2009) | Sep 22, 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 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 22, 2026 | High confidence |
This family
| US 7,531,855 | In force Dec 2026 | Dec 2026 |
| US 7,883,918 | this patent Sep 2026 | Sep 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 |
|---|---|---|---|
| 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.
Citations
1
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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.