Collateral for a security interest recorded Sep 12, 2025 (Barclays Bank PLC).
Term ends Apr 3, 2029 · Medium confidence
20-year base term ends Apr 16, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Altera Corporation
Filed Nov 4, 2010 as application 12/939,681 · Granted Apr 8, 2014
Base term plus 352 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Apr 16, 2008
Apr 16, 2008
Term ends
Apr 3, 2029
Apr 3, 2029
Granted
Apr 8, 2014
Apr 8, 2014
base term
patent term adjustment
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
352
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.
8
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 352 days past its 20-year base term on prosecution delay. 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 Apr 16, 2008, when application 12/103,993, the earliest non-provisional in its chain, was filed (this one was filed Nov 4, 2010); a parent in its chain could not be resolved (the next row) | Apr 16, 2028 | 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 | +352 days, USPTO patent term adjustment record | Apr 3, 2029 | 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 3, 2029 | Medium confidence |
This family
| US 7,679,342 | Lapsed on the fee record Mar 2018 | Mar 2018 |
| US 8,154,261 | In force Apr 2028 | Apr 2028 |
| US 8,283,901 | In force Apr 2028 | Apr 2028 |
| US 9,246,390 | Lapsed on the fee record Jan 2024 | Jan 2024 |
| US 8,410,769 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 8,541,991 | In force Jun 2028 | Jun 2028 |
| US 8,692,532 | this patent Apr 2029 | Apr 2029 |
| US 8,686,698 | 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 |
|---|---|---|---|
| Jan 28, 2011 Reel 25710, frame 404 | Lopata, Douglas Dean; Lotfi, Ashraf W. | 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
Apr 2029
Term ends Apr 3, 2029. No further fees fall due before then
Note
The 352 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
48
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.