Term ends Apr 12, 2028 · High confidence
20-year base term ends Jul 11, 2027
Held by Sangoma US Inc.
Filed Aug 18, 2011 as application 13/213,020 · Granted Mar 10, 2015
Base term plus 276 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Jul 11, 2007
Jul 11, 2007
Term ends
Apr 12, 2028
Apr 12, 2028
Granted
Mar 10, 2015
Mar 10, 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
276
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 8,098,810, to Apr 12, 2028. The term already ends on or before that date, so the cap shortened nothing.
2 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 276 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. 2 of 3 maintenance fees are 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 Jul 11, 2007, when application 11/827,314, the earliest non-provisional in its chain, was filed (this one was filed Aug 18, 2011) | Jul 11, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +276 days, USPTO patent term adjustment record | Apr 12, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,098,810) | resolves to Apr 12, 2028, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 12, 2028 | High confidence |
This family
| US 8,693,659 | In force Jul 2031 | Jul 2031 |
| US 8,098,810 | In force Feb 2030 | Feb 2030 |
| US 8,976,952 | this patent Apr 2028 | Apr 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 |
|---|---|---|---|
| Mar 2, 2012 Reel 27796, frame 558 | Lyman, Christopher M. | Fonality, Inc. | Assignment of Assignor's Interest |
| Feb 5, 2013 Reel 29759, frame 673 | Fonality, Inc. | Square 1 Bank | Security Agreement |
| Jun 28, 2013 Reel 30743, frame 115 | Passport Ventures, LLC | Fonality, Inc. | Security Agreement |
| Dec 4, 2014 Reel 34535, frame 640 | Fonality, Inc. | Fonality, Inc. | Change of Address |
| 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
Apr 2028
Term ends Apr 12, 2028.
Note
The 276 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 8,098,810, ends no earlier than this term, so it caps nothing.
Citations
30
later US patents cite this one
That is top 25% 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.