Also listed on Intellectual Ventures Holding 81 LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends no later than Nov 19, 2026 · Medium confidence
20-year base term ended Dec 31, 2022
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 Deepwell IP LLC
Filed Feb 19, 2008 as application 12/033,840 · Granted Apr 9, 2013
Base term plus 1419 days of patent term adjustment (USPTO delay)
Today
2002
2026
Clock starts
Dec 31, 2002
Dec 31, 2002
Ends no later than
Nov 19, 2026
Nov 19, 2026
Granted
Apr 9, 2013
Apr 9, 2013
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
1,419
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.
10
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 1419 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 Dec 31, 2002, when application 10/334,272, the earliest non-provisional in its chain, was filed (this one was filed Feb 19, 2008) | Dec 31, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1419 days, USPTO patent term adjustment record | Nov 19, 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 19, 2026 | Medium confidence |
This family
| US 6,936,898 | Term ended Mar 2023 | Mar 2023 |
| US 7,098,512 | Term ended Mar 2023 | Mar 2023 |
| US 7,332,763 | Term ended Jul 2023 | Jul 2023 |
| US 7,211,478 | Term ended Dec 2022 | Dec 2022 |
| US 7,645,664 | Term ended Dec 2023 | Dec 2023 |
| US 7,323,367 | Term ended Dec 2022 | Dec 2022 |
| US 7,608,897 | Term ended no later than Dec 2022 | no later than Dec 2022 |
| US 9,251,865 | In force Feb 2027 | Feb 2027 |
8 of 10 applications in this family shown, earliest filings first. 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 26, 2009 Reel 22454, frame 522 | Transmeta Corporation | Transmeta LLC | Merger |
| Sep 22, 2009 Reel 23268, frame 771 | Transmeta LLC | Intellectual Venture Funding LLC | Assignment of Assignor's Interest |
| Sep 29, 2015 Reel 36711, frame 160 | Intellectual Venture Funding LLC | Intellectual Ventures Holding 81 LLC | Merger |
| Oct 6, 2015 Reel 36797, frame 356 | Intellectual Ventures Funding LLC | Intellectual Ventures Holding 81 LLC | Corrective Assignment to Correct the Assignor's Name Previously Recorded at Reel: 036711 Frame: 0160. Assignor(S) Hereby Confirms the Merger. |
| Jul 19, 2021 Reel 56905, frame 392 | Intellectual Venture Funding LLC | Intellectual Ventures Holding 81 LLC | Merger |
| Feb 3, 2022 Reel 58881, frame 459 | Intellectual Ventures Holding 81 LLC | Intellecutal Ventures Assets 174 LLC | Assignment of Assignor's Interest |
| Apr 20, 2022 Reel 59649, frame 779 | Intellectual Ventures Assets 174 LLC | Quest Patent Research Corporation | Assignment of Assignor's Interest |
| Apr 20, 2022 Reel 59654, frame 315 | Quest Patent Research Corporation | Deepwell IP LLC | Assignment of Assignor's 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.
What's changing
Nov 2026
Term ends no later than Nov 19, 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 1419 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 19, 2026. We will not guess the cap.
Citations
7
later US patents cite this one
That is below the median of utility patents granted in 2013 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.