Term ended Apr 4, 2026 · High confidence
20-year base term ended Apr 4, 2026
Held by Optimal Plus Ltd.
Filed Jun 29, 2009 as application 12/493,460 · Granted Nov 29, 2011
Base term, 20 years from filing
Today
Term ended Apr 4, 2026
2006
2026
Clock starts
Apr 4, 2006
Apr 4, 2006
Term ended
Apr 4, 2026
Apr 4, 2026
Granted
Nov 29, 2011
Nov 29, 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.
3
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 Apr 4, 2006, when application 11/396,938, the earliest non-provisional in its chain, was filed (this one was filed Jun 29, 2009) | Apr 4, 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 | Apr 4, 2026 | High confidence |
This family
| US 7,567,947 | In force Jan 2027 | Jan 2027 |
| US 8,069,130 | this patent Apr 2026 | Apr 2026 |
| Application 13/275,474 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Sep 4, 2014 Reel 33685, frame 637 | Optimal Test Ltd. | Optimal Plus Ltd. | Change of Name |
| Dec 3, 2019 Reel 51155, frame 161 | Optimal Plus Ltd. | Bank Leumi le-Israel B.M. | Security Interest |
| Jun 4, 2020 Reel 52838, frame 945 | Bank Leumi le-Israel B.M. | Optimal Plus Ltd. | Release of Security Interest |
| Apr 7, 2021 Reel 55850, frame 658 | Balog, Gil | Optimaltest Ltd. | Assignment of Assignor's Interest |
| Jun 18, 2021 Reel 57280, frame 28 | National Instruments Corporation | Wells Fargo Bank, National Association | Security Interest |
| Oct 13, 2023 Reel 65231, frame 466 | Wells Fargo Bank, National Association, as Administrative Agent | National Instruments Corporation | Release of Security Interest in Patents (Reel/Frame 057280/0028) |
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.
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Alerts on its grants, lapses and transfers.
Citations
6
later US patents cite 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.