Term ends Jun 19, 2028 · Medium confidence
20-year base term ends Mar 27, 2027
Why Medium: A parent in the chain could not be resolved.
Held by Amazon Technologies, Inc.
Filed Dec 9, 2011 as application 13/315,414 · Granted Mar 31, 2015
Base term plus 450 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Mar 27, 2007
Mar 27, 2007
Term ends
Jun 19, 2028
Jun 19, 2028
Granted
Mar 31, 2015
Mar 31, 2015
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
450
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.
50
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 450 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Mar 27, 2007, when application 11/692,075, the earliest non-provisional in its chain, was filed (this one was filed Dec 9, 2011); a parent in its chain could not be resolved (the next row) | Mar 27, 2027 | 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 | +450 days, USPTO patent term adjustment record | Jun 19, 2028 | 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 | Jun 19, 2028 | Medium confidence |
This family
| US 8,203,445 | In force Sep 2029 | Sep 2029 |
| US 8,669,716 | Lapsed on the fee record Mar 2022 | Mar 2022 |
| US 8,033,686 | Lapsed on the fee record Oct 2023 | Oct 2023 |
| US 8,362,713 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 8,491,159 | In force Mar 2028 | Mar 2028 |
| US 8,519,566 | Lapsed on the fee record Aug 2021 | Aug 2021 |
| US 8,829,799 | Lapsed on the fee record Sep 2022 | Sep 2022 |
| US 8,415,901 | In force Mar 2027 | Mar 2027 |
8 of 50 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 |
|---|---|---|---|
| Apr 10, 2017 Reel 42227, frame 832 | Wireless Environment, LLC | Citizens Bank, N. A. | Security Agreement |
| Oct 10, 2017 Reel 44166, frame 789 | Citizens Bank National Association, Secured Party | Wireless Environment, LLC | Termination and Release of Security Interest in Patents at Reel/Frame 042227/0832 |
| Oct 16, 2017 Reel 43873, frame 416 | Recker, Michael V.; Levine, David B. | Wireless Environment, LLC | Assignment of Assignor's Interest |
| Dec 10, 2018 Reel 48695, frame 493 | Ring LLC | A9 Com, Inc. | Bill of Sale |
| Dec 10, 2018 Reel 48737, frame 379 | Wireless Environment, LLC | Ring LLC | Assignment of Assignor's Interest |
| Oct 7, 2024 Reel 69114, frame 709 | A9.com, Inc. | Amazon Technologies, Inc. | 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
Jun 2028
Term ends Jun 19, 2028. No further fees fall due before then
Note
The 450 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
623
later US patents cite this one
That is top 1% of utility patents granted in 2015 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.