Term ends Oct 16, 2029 · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Held by Viavi Solutions Inc.

Filed Dec 28, 2015 as application 14/980,815 · Granted Nov 21, 2017

Base term, 20 years from filing

Today

20 years from filing

Term ends Oct 16, 2029

2009 2029

Clock starts
Oct 16, 2009

Term ends
Oct 16, 2029

Granted
Nov 21, 2017

base term fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 2

Maintenance fees paid

Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

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. 2 of 2 maintenance fees are paid so far. 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 Oct 16, 2009, when application 12/580,604, the earliest non-provisional in its chain, was filed (this one was filed Dec 28, 2015); a parent in its chain could not be resolved (the next row)	Oct 16, 2029	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium 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 2 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Oct 16, 2029	Medium confidence

This family

Application 12/580,604	Abandoned not computed	not computed
US 9,826,416	In force Jan 2031	Jan 2031
Application PCT/US2010/048927	PCT application no patent term	no patent term
Application PCT/US2010/048929	PCT application no patent term	no patent term
US 8,665,835	Lapsed on the fee record Mar 2026	Mar 2026
US 9,226,178	In force Oct 2029	Oct 2029
US 9,826,420	this patent Oct 2029	Oct 2029

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
May 21, 2020 Reel 52729, frame 321	Viavi Solutions Inc.; 3Z Telecom, Inc.; Acterna LLC; Acterna WG International Holdings LLC; Viavi Solutions LLC; Jdsu Acterna Holdings LLC; Optical Coating Laboratory, LLC; RPC Photonics, Inc.; TTC International Holdings, LLC	Wells Fargo Bank, National Association, as Administrative Agent	Security Interest
Jan 5, 2022 reel/frame not recorded	Wells Fargo Bank, National Association, as Administrative Agent	Viavi Solutions Inc.	Terminations of Security Interest at Reel 052729, Frame 0321
Jan 5, 2022 reel/frame not recorded	Wells Fargo Bank, National Association, as Administrative Agent	RPC Photonics, Inc.	Terminations of Security Interest at Reel 052729, Frame 0321
Jan 5, 2022 Reel 58666, frame 639	Wells Fargo Bank, National Association, as Administrative Agent	Viavi Solutions Inc.; RPC Photonics, Inc.	Terminations of Security Interest at Reel 052729, Frame 0321
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/frame not recorded	Wells Fargo Bank, National Association, as Administrative Agent	Inertial Labs, Inc.	Release of Security Interest at Reel/Frame 73189/0873
May 28, 2026 reel/frame not recorded	Wells Fargo Bank, National Association, as Administrative Agent	Viavi Solutions Inc.	Release of Security Interest at Reel/Frame 73189/0873
May 28, 2026 reel/frame not recorded	Wells Fargo Bank, National Association, as Administrative Agent	Viavi Solutions Licensing LLC	Release of Security Interest at Reel/Frame 73189/0873
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

Oct 2029

Term ends Oct 16, 2029. No further fees fall due before then

Citations

later US patents cite this one

That is top 25% of utility patents granted in 2017 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.

Self-Optimizing Wireless Network