Collateral for a security interest recorded Aug 5, 2024 (Wells Fargo Bank, National Association).
Term ends Jul 11, 2031 · High confidence
20-year base term ends Aug 29, 2028
Held by 8X8, Inc.
Filed Aug 29, 2008 as application 12/201,599 · Granted Sep 25, 2012
Base term plus 1046 days of patent term adjustment (USPTO delay)
Today
2008
2031
Clock starts
Aug 29, 2008
Aug 29, 2008
Term ends
Jul 11, 2031
Jul 11, 2031
Granted
Sep 25, 2012
Sep 25, 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
1,046
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.
6
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 1046 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 Aug 29, 2008, when this application, 12/201,599, was filed | Aug 29, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1046 days, USPTO patent term adjustment record | Jul 11, 2031 | 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 | Jul 11, 2031 | High confidence |
This family
| US 8,275,116 | this patent Jul 2031 | Jul 2031 |
| Application PCT/US2009/054780 | PCT application no patent term | no patent term |
| US 8,619,967 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| US 8,804,940 | In force no later than Aug 2028 | no later than Aug 2028 |
| US 9,049,297 | In force Aug 2028 | Aug 2028 |
| US 9,307,088 | In force Aug 2028 | Aug 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 |
|---|---|---|---|
| Apr 13, 2009 Reel 22519, frame 806 | Southwick, Richard; Townsend, Robert; Salame, Mansour | Contactual, Inc. | Assignment of Assignor's Interest |
| Nov 1, 2011 Reel 27157, frame 520 | Contactual, Inc. | 8X8, Inc. | Assignment of Assignor's Interest |
| Aug 5, 2022 Reel 61085, frame 861 | 8X8, Inc.; Fuze, Inc. | Wilmington Savings Fund Society, FSB | Intellectual Property Security Agreement |
| Jan 26, 2024 Reel 66383, frame 936 | 8X8, Inc.; Fuze, Inc. | Wilmington Savings Fund Society, FSB | Corrective Assignment to Correct the Property Numbers Section to Remove Application Numbers 11265423, 11252205, 11240370, 11252276, and 11297182 Previously Recorded on Reel 061085 Frame 0861. Assignor(S) Hereby Confirms the Intellectual Property Security Agreement. |
| Aug 5, 2024 Reel 68327, frame 819 | 8X8, Inc. | Wells Fargo Bank, National Association, as Administrative Agent | Security Interest |
| Aug 5, 2024 Reel 68328, frame 569 | Wilmington Savings Fund Society, FSB | 8X8, Inc.; Fuze, Inc. | Release of Security Interest |
| Aug 5, 2024 reel/frame not recorded | Wilmington Savings Fund Society, FSB | 8X8, Inc. | Release of Security Interest |
| Aug 5, 2024 reel/frame not recorded | Wilmington Savings Fund Society, FSB | Fuze, Inc. | Release of Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2031
Term ends Jul 11, 2031. No further fees fall due before then
Note
The 1046 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
35
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.