Collateral for a security interest recorded Aug 5, 2024 (Wells Fargo Bank, National Association).
Term ends Aug 29, 2028 · Low confidence
20-year base term ends Aug 29, 2028
Held by 8X8, Inc.
Filed May 22, 2018 as application 15/986,621 · Granted Mar 24, 2020
Base term, 20 years from filing
Today
2008
2028
Clock starts
Aug 29, 2008
Aug 29, 2008
Term ends
Aug 29, 2028
Aug 29, 2028
Granted
Mar 24, 2020
Mar 24, 2020
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,243,913, US 8,855,291, US 9,294,625, US 9,438,736, US 9,986,091, to Aug 29, 2028. The term already ends on or before that date, so the cap shortened nothing.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
10
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 is 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. 1 of 2 maintenance fees is paid so far. Confidence: Low. 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 12/201,639, the earliest non-provisional in its chain, was filed (this one was filed May 22, 2018); a parent in its chain could not be resolved (the next row) | Aug 29, 2028 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,243,913, US 8,855,291, US 9,294,625, US 9,438,736, US 9,986,091) | 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 | 1 of 2 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 12201639, 12201639, 12201639, 12201639 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Aug 29, 2028 | Low confidence |
This family
| US 8,243,913 | In force Mar 2031 | Mar 2031 |
| Application PCT/US2009/054787 | PCT application no patent term | no patent term |
| US 8,855,291 | In force May 2029 | May 2029 |
| US 9,294,625 | In force Aug 2028 | Aug 2028 |
| US 9,438,736 | In force Aug 2028 | Aug 2028 |
| US 9,986,091 | In force Aug 2028 | Aug 2028 |
| US 9,838,539 | In force Aug 2028 | Aug 2028 |
| US 10,601,990 | this patent Aug 2028 | Aug 2028 |
8 of 10 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| May 23, 2018 Reel 45879, frame 420 | Townsend, Robert | Contactual, Inc. | Assignment of Assignor's Interest |
| May 23, 2018 Reel 45879, frame 869 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Aug 2028
Term ends Aug 29, 2028. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,243,913, US 8,855,291, US 9,294,625, US 9,438,736, US 9,986,091, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2020 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.