Also listed on Mu Dynamics, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Oct 21, 2025 (Wells Fargo Bank, National Association).
Term ends Feb 10, 2034 · High confidence
20-year base term ends Feb 10, 2034
Held by Viavi Solutions Licensing LLC
Filed Feb 10, 2014 as application 14/177,165 · Granted Jan 26, 2016
Base term, 20 years from filing
Today
2014
2034
Clock starts
Feb 10, 2014
Feb 10, 2014
Term ends
Feb 10, 2034
Feb 10, 2034
Granted
Jan 26, 2016
Jan 26, 2016
base term
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.
2 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.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Feb 10, 2014, when this application, 14/177,165, was filed | Feb 10, 2034 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 10, 2034 | High confidence |
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 |
|---|---|---|---|
| Apr 24, 2014 Reel 32749, frame 391 | Douglas, John Reed; Rodriguez-herrera, Alfonso | Mu Dynamics, Inc. | Assignment of Assignor's Interest |
| Aug 28, 2014 Reel 33654, frame 709 | Reed, John Douglas; Rodriguez-herrera, Alfonso | Spirent Communications, Inc. | Corrective Assignment to Correct the Assignee Name and Address Previously Recorded on Reel 032749 Frame 0391. Assignor(S) Hereby Confirms the Correct Assignee Name and Address Is Spirent Communications, Inc., 1325 Borregas Avenue, Sunnyvale, California 94089. |
| Oct 20, 2025 Reel 73121, frame 549 | Spirent Communications, Inc. | Viavi Solutions Licensing LLC | Assignment of Assignor's Interest |
| Oct 21, 2025 Reel 73189, frame 873 | Inertial Labs, Inc.; Viavi Solutions Inc.; Viavi Solutions Licensing LLC | Wells Fargo Bank, National Association, as Administrative Agent | Security Agreement |
| Nov 14, 2025 Reel 73571, frame 137 | Viavi Solutions Inc.; Viavi Solutions Licensing LLC; Inertial Labs, Inc. | Wells Fargo Bank, National Association, as Agent | Security Interest |
| May 28, 2026 Reel 75642, frame 381 | Wells Fargo Bank, National Association, as Administrative Agent | Inertial Labs, Inc.; Viavi Solutions Inc.; Viavi Solutions Licensing LLC | Release of Security Interest at Reel/Frame 73189/0873 |
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
Feb 2034
Term ends Feb 10, 2034. Maintenance fees still fall due before then
Citations
12
later US patents cite this one
That is above 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.