Collateral for a security interest recorded Aug 5, 2024 (Wells Fargo Bank, National Association).
Lapsed Dec 31, 2025 on the fee record · High confidence
20-year base term ends Aug 29, 2028
Third maintenance fee unpaid; grace period ended.
Held by 8X8, Inc.
Filed Aug 29, 2012 as application 13/598,149 · Granted Dec 31, 2013
Base term, 20 years from filing
Today
Lapsed Dec 31, 2025
2008
2028
Clock starts
Aug 29, 2008
Aug 29, 2008
No longer in force
Dec 31, 2025
Dec 31, 2025
Granted
Dec 31, 2013
Dec 31, 2013
Term would have run to
Aug 29, 2028
Aug 29, 2028
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,275,116, to Aug 29, 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.
6
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 Aug 29, 2028: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 application 12/201,599, the earliest non-provisional in its chain, was filed (this one was filed Aug 29, 2012) | Aug 29, 2028 | 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 | Disclaimer resolved from the filed document (refs US 8,275,116) | resolves to Aug 29, 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 | lapsed Dec 31, 2025 | High confidence |
| Computed term end | The steps above, in order | Dec 31, 2025 | High confidence |
This family
| US 8,275,116 | In force Jul 2031 | Jul 2031 |
| Application PCT/US2009/054780 | PCT application no patent term | no patent term |
| US 8,619,967 | this patent 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 |
|---|---|---|---|
| Jul 27, 2022 Reel 60643, frame 687 | Southwick, Richard; Townsend, Robert; Salame, Mansour | Contactual, Inc. | Assignment of Assignor's Interest |
| Jul 27, 2022 Reel 60643, frame 960 | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,275,116, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2013 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.