Lapsed Jun 26, 2026 on the fee record · High confidence
20-year base term ends Dec 4, 2034
Second maintenance fee unpaid; grace period ended.
Held by AT&T Intellectual Property I, LP
Filed Dec 4, 2014 as application 14/560,215 · Granted Jun 26, 2018
Base term, 20 years from filing, plus 50 days of patent term adjustment (USPTO delay)
Today
Lapsed Jun 26, 2026
2014
2035
Clock starts
Dec 4, 2014
Dec 4, 2014
No longer in force
Jun 26, 2026
Jun 26, 2026
Granted
Jun 26, 2018
Jun 26, 2018
Term would have run to
Jan 23, 2035
Jan 23, 2035
base term
patent term adjustment
after the term ends
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
50
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.
41
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jan 23, 2035: its 20-year base term plus 50 days of term adjustment for prosecution delay. 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 Dec 4, 2014, when this application, 14/560,215, was filed | Dec 4, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +50 days, USPTO patent term adjustment record | Jan 23, 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 | lapsed Jun 26, 2026 | High confidence |
| Computed term end | The steps above, in order | Jun 26, 2026 | High confidence |
This family
| US 9,680,670 | Lapsed on the fee record Jun 2025 | Jun 2025 |
| US 9,544,006 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 10,009,067 | this patent Jun 2026 | Jun 2026 |
| US 9,742,462 | Lapsed on the fee record Aug 2025 | Aug 2025 |
| US 9,997,819 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| Application PCT/US2015/056632 | PCT application no patent term | no patent term |
| Application PCT/US2015/056626 | PCT application no patent term | no patent term |
| US 9,531,427 | Lapsed on the fee record Dec 2024 | Dec 2024 |
8 of 41 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 |
|---|---|---|---|
| Dec 10, 2014 Reel 34446, frame 562 | Birk, Martin; Henry, Paul Shala | AT&T Intellectual Property I, LP | Assignment of Assignor's Interest |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 50 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
313
later US patents cite this one
That is top 1% of utility patents granted in 2018 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.