Term ends no later than Nov 19, 2036 · Medium confidence
20-year base term ends Aug 7, 2027
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.
Filed Mar 7, 2011 as application 13/042,135 · Granted Apr 30, 2013
Base term plus 3392 days of patent term adjustment (USPTO delay)
Today
2007
2036
Clock starts
Aug 7, 2007
Aug 7, 2007
Ends no later than
Nov 19, 2036
Nov 19, 2036
Granted
Apr 30, 2013
Apr 30, 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
3,392
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.
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 3392 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 Aug 7, 2007, when application 11/835,233, the earliest non-provisional in its chain, was filed (this one was filed Mar 7, 2011) | Aug 7, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +3392 days, USPTO patent term adjustment record | Nov 19, 2036 | 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, 2036 | Medium confidence |
This family
| US 7,903,576 | In force Dec 2027 | Dec 2027 |
| US 8,094,576 | In force Sep 2027 | Sep 2027 |
| US 8,432,827 | this patent no later than Nov 2036 | no later than Nov 2036 |
| US 9,712,419 | In force Nov 2028 | Nov 2028 |
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 |
|---|---|---|---|
| Nov 19, 2012 Reel 29324, frame 169 | Matityahu, Eldad; Shaw, Robert; Ramirez Carpio, Dennis Angelo; Le, Ky Hong; Lee, Dong Su | Net Optics, Inc. | Assignment of Assignor's Interest |
| Feb 18, 2014 Reel 32271, frame 151 | Net Optics, Inc. | Bank of America, N.A., as Administrative Agent | Security Agreement |
| Feb 2, 2015 Reel 34870, frame 598 | Bank of America, N.A., Resigning Administrative Agent | Silicon Valley Bank, as Successor Administrative Agent | Notice of Substitution of Administrative Agent |
| Nov 19, 2015 Reel 37087, frame 622 | Net Optics, Inc. | Ixia | Assignment of Assignor's Interest |
| Apr 24, 2017 Reel 42126, frame 749 | Silicon Valley Bank, as Successor Administrative Agent | Net Optics, Inc. | Release of Security Interest |
| Oct 18, 2017 Reel 44222, frame 695 | Ixia | Keysight Technologies Singapore (Holdings) Pte. Ltd. | Assignment of Assignor's Interest |
| Oct 19, 2018 Reel 48225, frame 65 | Keysight Technologies Singapore (Holdings) Pte. Ltd. | Keysight Technologies Singapore (Sales) Pte. Ltd. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2036
Term ends no later than Nov 19, 2036. 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 3392 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, 2036. 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.