Collateral for a security interest recorded Jul 21, 2026 (JPMorgan Chase Bank, N.A.).
Term ends Sep 16, 2035 · High confidence
20-year base term ends May 7, 2035
Held by Adtran, Inc.
Filed Aug 11, 2015 as application 14/823,898 · Granted Mar 31, 2020
Base term plus 132 days of patent term adjustment (USPTO delay)
Today
2015
2035
Clock starts
May 7, 2015
May 7, 2015
Term ends
Sep 16, 2035
Sep 16, 2035
Granted
Mar 31, 2020
Mar 31, 2020
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
132
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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 132 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 May 7, 2015, when application 14/706,732, the earliest non-provisional in its chain, was filed (this one was filed Aug 11, 2015) | May 7, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +132 days, USPTO patent term adjustment record | Sep 16, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 16, 2035 | High confidence |
This family
| US 9,729,241 | In force Jul 2035 | Jul 2035 |
| US 10,608,940 | this patent Sep 2035 | Sep 2035 |
| US 10,225,195 | In force May 2035 | May 2035 |
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 3, 2020 Reel 51408, frame 846 | Goodson, Richard; Raghavendra, Ramya; Ko, Kenneth D. | Adtran, Inc. | Assignment of Assignor's Interest |
| Jul 18, 2022 Reel 60692, frame 249 | Adtran, Inc. | Wells Fargo Bank, National Association, as Administrative Agent | Security Interest |
| Jul 21, 2026 Reel 76028, frame 412 | Adtran, Inc. | JPMorgan Chase Bank, N.A., as Administrative Agent | Security Interest |
| Jul 22, 2026 Reel 76054, frame 608 | Wells Fargo Bank, National Association | Adtran, Inc. | Notice of Release of Security Interest in Patents Recorded at Reel 060692, Frame 0249 |
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 2035
Term ends Sep 16, 2035. Maintenance fees still fall due before then
Note
The 132 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is top 25% of utility patents granted in 2020 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.