Collateral for a security interest recorded Aug 5, 2024 (Wells Fargo Bank, National Association).

Term ends May 29, 2029 · Low confidence

Computed 20-year base term

Held by 8X8, Inc.

Filed Jul 18, 2012 as application 13/552,428 · Granted Oct 7, 2014

Base term plus 273 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends May 29, 2029

2008 2029

Clock starts
Aug 29, 2008

Term ends
May 29, 2029

Granted
Oct 7, 2014

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

273

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 8,243,913, to May 29, 2029. The term already ends on or before that date, so the cap shortened nothing.

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.

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 273 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. All three maintenance fees are recorded paid; no more fees are due. 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 Jul 18, 2012); 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	+273 days, USPTO patent term adjustment record	May 29, 2029	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 8,243,913)	resolves to May 29, 2029, no earlier than this term, so no change	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Further caveats on record	The record names parents not resolved: 12201639	Low confidence overall	Low confidence
Computed term end	The steps above, in order	May 29, 2029	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	this patent 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	In force 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
Jul 27, 2022 Reel 60644, frame 417	Townsend, Robert	Contactual, Inc.	Assignment of Assignor's Interest
Jul 27, 2022 Reel 60645, frame 299	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

May 2029

Term ends May 29, 2029. No further fees fall due before then

Note

The 273 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 8,243,913, ends no earlier than this term, so it caps nothing.

Citations

later US patents cite this one

That is above the median of utility patents granted in 2014 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.

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