Term ends Mar 14, 2028 · High confidence
20-year base term ends Mar 10, 2028
Held by Sangoma US Inc.
Filed Aug 31, 2012 as application 13/601,965 · Granted Jul 22, 2014
Base term plus 4 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Mar 10, 2008
Mar 10, 2008
Term ends
Mar 14, 2028
Mar 14, 2028
Granted
Jul 22, 2014
Jul 22, 2014
base term
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
4
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,341,535, to Mar 14, 2028. The term already ends on or before that date, so the cap shortened nothing.
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.
2
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 4 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. 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 10, 2008, when application 12/075,411, the earliest non-provisional in its chain, was filed (this one was filed Aug 31, 2012) | Mar 10, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +4 days, USPTO patent term adjustment record | Mar 14, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,341,535) | resolves to Mar 14, 2028, no earlier than this term, so no change | 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 | Mar 14, 2028 | High confidence |
This family
| US 8,341,535 | In force Apr 2030 | Apr 2030 |
| US 8,787,548 | this patent Mar 2028 | Mar 2028 |
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 |
|---|---|---|---|
| Feb 21, 2013 Reel 29851, frame 362 | Lyman, Christopher M. | Fonality, Inc. | Assignment of Assignor's Interest |
| Jun 28, 2013 Reel 30743, frame 115 | Passport Ventures, LLC | Fonality, Inc. | Security Agreement |
| Mar 17, 2015 Reel 35180, frame 483 | Fonality, Inc. | Square 1 Bank | Security Interest |
| Feb 15, 2017 Reel 41264, frame 648 | Passport Ventures, LLC | Fonality, Inc. | Release of Security Interest |
| Feb 21, 2017 Reel 41315, frame 1 | Netfortris Corporation; Netfortris Operating Co., Inc.; Netfortris Acquisition Co., Inc.; Fonality, Inc.; Fonality Merger Sub Inc. | Gladstone Capital Corporation | Security Interest |
| Mar 7, 2017 Reel 41482, frame 414 | Pacific Western Bank, as Successor in Interest to Square 1 Bank | Fonality, Inc. | Release of Security 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.
What's changing
Mar 2028
Term ends Mar 14, 2028. No further fees fall due before then
Note
The 4 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,341,535, ends no earlier than this term, so it caps nothing.
Citations
40
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.