Collateral for a security interest recorded Sep 12, 2025 (Barclays Bank PLC).
Term ends Sep 16, 2027 · Medium confidence
20-year base term ends Sep 10, 2027
Why Medium: A parent in the chain could not be resolved.
Held by Altera Corporation
Filed Dec 13, 2013 as application 14/105,461 · Granted Mar 29, 2016
Base term plus 6 days of patent term adjustment (USPTO delay)
Today
2007
2027
Clock starts
Sep 10, 2007
Sep 10, 2007
Term ends
Sep 16, 2027
Sep 16, 2027
Granted
Mar 29, 2016
Mar 29, 2016
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
6
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 6 days past its 20-year base term on prosecution delay. 2 of 2 maintenance fees are paid so far. 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 Sep 10, 2007, when application 11/852,688, the earliest non-provisional in its chain, was filed (this one was filed Dec 13, 2013); a parent in its chain could not be resolved (the next row) | Sep 10, 2027 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +6 days, USPTO patent term adjustment record | Sep 16, 2027 | 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 | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 16, 2027 | Medium confidence |
This family
| US 7,920,042 | In force Jul 2029 | Jul 2029 |
| US 8,339,232 | In force Sep 2027 | Sep 2027 |
| US 8,618,900 | In force Sep 2027 | Sep 2027 |
| US 9,299,489 | this patent Sep 2027 | Sep 2027 |
| US 9,837,200 | In force Sep 2027 | Sep 2027 |
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 6, 2014 Reel 32364, frame 52 | Lotfi, Ashraf W.; Liakopoulos, Trifon M.; Filas, Robert W.; Panda, Amrit | Enpirion, Inc. | Assignment of Assignor's Interest |
| Jun 20, 2022 Reel 60390, frame 187 | Enpirion, Inc. | Altera Corporation | Assignment of Assignor's Interest |
| Aug 11, 2022 Reel 61159, frame 694 | Altera Corporation | Intel Corporation | Assignment of Assignor's Interest |
| Jan 19, 2024 Reel 66353, frame 886 | Intel Corporation | Altera Corporation | Assignment of Assignor's Interest |
| Sep 12, 2025 Reel 73431, frame 309 | Altera Corporation | Barclays Bank PLC, as Collateral Agent | Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Sep 2027
Term ends Sep 16, 2027. No further fees fall due before then
Note
The 6 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2016 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.