Collateral for a security interest recorded Oct 21, 2025 (Wells Fargo Bank, National Association).
Term ends Sep 7, 2030 · High confidence
20-year base term ends Jul 23, 2030
Held by Viavi Solutions Inc.
Filed Jan 20, 2012 as application 13/386,189 · Granted Aug 27, 2013
Base term plus 46 days of patent term adjustment (USPTO delay)
Today
2010
2030
Clock starts
Jul 23, 2010
Jul 23, 2010
Term ends
Sep 7, 2030
Sep 7, 2030
Granted
Aug 27, 2013
Aug 27, 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
46
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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 runs 46 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jul 23, 2010, when application PCT/GB2010/001404, the earliest non-provisional in its chain, was filed (this one was filed Jan 20, 2012) | Jul 23, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +46 days, USPTO patent term adjustment record | Sep 7, 2030 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Sep 7, 2030 | High confidence |
This family
| US 8,520,197 | this patent Sep 2030 | Sep 2030 |
| US 8,760,639 | In force Jul 2030 | Jul 2030 |
2 of 3 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 15, 2012 Reel 27869, frame 256 | Handerek, Vincent Andrei | 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
Sep 2030
Term ends Sep 7, 2030. No further fees fall due before then
Note
The 46 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
55
later US patents cite this one
That is top 10% 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
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.