Lapsed Nov 10, 2024 on the fee record · High confidence
20-year base term ends Mar 16, 2029
First maintenance fee unpaid; grace period ended.
Held by Sangoma US Inc.
Filed Apr 23, 2018 as application 15/960,347 · Granted Nov 10, 2020
Base term, 20 years from filing
Today
Lapsed Nov 10, 2024
2009
2029
Clock starts
Mar 16, 2009
Mar 16, 2009
No longer in force
Nov 10, 2024
Nov 10, 2024
Granted
Nov 10, 2020
Nov 10, 2020
Term would have run to
Mar 16, 2029
Mar 16, 2029
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
4
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 Mar 16, 2029: its 20-year base term, with no 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 Mar 16, 2009, when application 12/405,204, the earliest non-provisional in its chain, was filed (this one was filed Apr 23, 2018) | Mar 16, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High 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 | 0 of 2 maintenance fees paid | lapsed Nov 10, 2024 | High confidence |
| Computed term end | The steps above, in order | Nov 10, 2024 | High confidence |
This family
| US 9,443,244 | In force Dec 2031 | Dec 2031 |
| US 9,955,004 | In force Mar 2029 | Mar 2029 |
| US 10,834,254 | this patent Nov 2024 | Nov 2024 |
| US 11,223,720 | In force Mar 2029 | Mar 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 |
|---|---|---|---|
| Dec 3, 2018 Reel 47661, frame 130 | Lyman, Christopher M. | Fonality, Inc. | Assignment of Assignor's Interest |
| Mar 29, 2022 Reel 59541, frame 538 | Fonality, Inc. | The Toronto- Dominion Bank | Security Agreement |
| Sep 12, 2022 Reel 61064, frame 473 | Fonality, Inc. | Sangoma US 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.
Citations
0
later US patents cite this one
That is below the median 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.