Term ends Apr 6, 2031 · High confidence
20-year base term ends Jun 26, 2029
Held by Mimirip LLC
Filed Jun 26, 2009 as application 12/492,820 · Granted Oct 16, 2012
Base term plus 649 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Jun 26, 2009
Jun 26, 2009
Term ends
Apr 6, 2031
Apr 6, 2031
Granted
Oct 16, 2012
Oct 16, 2012
base term
patent term adjustment
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
649
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.
4
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 649 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 Jun 26, 2009, when this application, 12/492,820, was filed | Jun 26, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +649 days, USPTO patent term adjustment record | Apr 6, 2031 | 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 | Apr 6, 2031 | High confidence |
This family
| US 8,289,761 | this patent Apr 2031 | Apr 2031 |
| US 8,675,402 | In force Jun 2029 | Jun 2029 |
| US 8,570,796 | In force Jun 2029 | Jun 2029 |
| US 8,498,147 | In force Jun 2029 | Jun 2029 |
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 |
|---|---|---|---|
| Jun 26, 2009 Reel 22882, frame 893 | Park, Hae-chan; Do, Gap-sok; Lee, Jang-uk | 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
Apr 2031
Term ends Apr 6, 2031. No further fees fall due before then
Note
The 649 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
25
later US patents cite this one
That is top 25% 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.