Also listed on Lifesize Communications, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 30, 2030 · High confidence
20-year base term ends Jan 19, 2027
Held by Enghouse Interactive Inc.
Filed Jan 19, 2007 as application 11/624,984 · Granted Feb 28, 2012
Base term plus 1441 days of patent term adjustment (USPTO delay)
Today
2007
2030
Clock starts
Jan 19, 2007
Jan 19, 2007
Term ends
Dec 30, 2030
Dec 30, 2030
Granted
Feb 28, 2012
Feb 28, 2012
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
1,441
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.
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 1441 days past its 20-year base term on prosecution delay. 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 Jan 19, 2007, when this application, 11/624,984, was filed | Jan 19, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1441 days, USPTO patent term adjustment record | Dec 30, 2030 | 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 | Dec 30, 2030 | High confidence |
This family
| US 8,125,508 | this patent Dec 2030 | Dec 2030 |
| US 8,786,668 | In force Oct 2027 | Oct 2027 |
| US 9,414,013 | In force Feb 2027 | Feb 2027 |
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 |
|---|---|---|---|
| Jan 24, 2007 Reel 18794, frame 848 | Kenoyer, Michael L. | Lifesize Communications, Inc. | Assignment of Assignor's Interest |
| Feb 26, 2016 Reel 37900, frame 54 | Lifesize Communications, Inc. | Lifesize, Inc. | Assignment of Assignor's Interest |
| Mar 2, 2020 Reel 52066, frame 126 | Serenova, LLC; Lifesize, Inc.; Lo Platform Midco, Inc. | Silicon Valley Bank, as Administrative Agent and Collateral Agent | Security Interest |
| Mar 16, 2020 Reel 52179, frame 63 | Lifesize, Inc. | Westriver Innovation Lending Fund VIII, L.P. | Security Interest |
| Mar 14, 2025 Reel 70932, frame 415 | SL Midco 2, LLC; SL Midco 1, LLC; Lo Platform Midco, Inc.; Serenova, LLC; Lifesize, Inc.; Telestrat LLC; Light Blue Optics Inc.; Serenova WFM, Inc. | Enghouse Interactive 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
Dec 2030
Term ends Dec 30, 2030. No further fees fall due before then
Note
The 1441 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
45
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.