Also listed on Fotech Solutions Limited, 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 Dec 27, 2031 · High confidence
20-year base term ends Nov 9, 2031
Held by Viavi Solutions Inc.
Filed May 8, 2013 as application 13/884,017 · Granted Apr 5, 2016
Base term plus 48 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Nov 9, 2011
Nov 9, 2011
Term ends
Dec 27, 2031
Dec 27, 2031
Granted
Apr 5, 2016
Apr 5, 2016
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
48
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
5
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 48 days past its 20-year base term on 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 Nov 9, 2011, when application PCT/GB2011/052183, the earliest non-provisional in its chain, was filed (this one was filed May 8, 2013) | Nov 9, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +48 days, USPTO patent term adjustment record | Dec 27, 2031 | 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 | Dec 27, 2031 | High confidence |
This family
| US 9,304,017 | this patent Dec 2031 | Dec 2031 |
| US 9,562,826 | In force Nov 2031 | Nov 2031 |
| US 9,574,970 | In force Nov 2031 | Nov 2031 |
| US 9,759,633 | In force Nov 2031 | Nov 2031 |
4 of 5 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 |
|---|---|---|---|
| Jan 2, 2014 Reel 31873, frame 24 | Handerek, Vincent | Fotech Solutions Limited | Assignment of Assignor's Interest |
| Jun 29, 2020 Reel 53082, frame 233 | Fotech Solutions Limited | Fotech Group Limited | Assignment of Assignor's Interest |
| Apr 25, 2023 Reel 63427, frame 956 | Fotech Group Limited | Viavi Solutions Inc. | 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
Dec 2031
Term ends Dec 27, 2031. Maintenance fees still fall due before then
Note
The 48 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
44
later US patents cite this one
That is top 10% 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.