Term ends Feb 10, 2033 · High confidence
20-year base term ends Sep 16, 2031
Filed Sep 16, 2011 as application 13/235,052 · Granted May 26, 2015
Base term plus 513 days of patent term adjustment (USPTO delay)
Today
2011
2033
Clock starts
Sep 16, 2011
Sep 16, 2011
Term ends
Feb 10, 2033
Feb 10, 2033
Granted
May 26, 2015
May 26, 2015
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
513
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
30
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 513 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Sep 16, 2011, when this application, 13/235,052, was filed | Sep 16, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +513 days, USPTO patent term adjustment record | Feb 10, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 10, 2033 | High confidence |
This family
| US 6,564,321 | Term ended Jun 2015 | Jun 2015 |
| US 7,020,132 | Term ended no later than Jun 2018 | no later than Jun 2018 |
| US 6,857,074 | Term ended May 2015 | May 2015 |
| US 7,895,306 | Term ended no later than Oct 2019 | no later than Oct 2019 |
| Application 90/007,539 | Pending not computed | not computed |
| US 7,769,001 | Term ended Jun 2018 | Jun 2018 |
| Application 90/007,953 | Pending not computed | not computed |
| Application 11/609,019 | Abandoned not computed | not computed |
8 of 30 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 |
|---|---|---|---|
| Nov 30, 2011 Reel 27299, frame 416 | Vendrow, Vlad; Solovey, Dmitriy | RingCentral, Inc. | Assignment of Assignor's Interest |
| May 31, 2013 Reel 30522, frame 869 | RingCentral, Inc. | Advanced Messaging Technologies, Inc. | Assignment of Assignor's Interest |
| Oct 13, 2021 Reel 57937, frame 1 | Advanced Messaging Technologies, Inc. | J2 Cloud Services, LLC | Assignment of Assignor's Interest |
| Mar 9, 2022 Reel 59357, frame 3 | J2 Cloud Services, LLC | Mufg Union Bank, N.A., as Collateral Agent | Security Interest |
| Aug 25, 2022 Reel 60901, frame 956 | J2 Cloud Services, LLC | Advanced Messaging Technologies, Inc. | Assignment of Assignor's Interest |
| Jul 9, 2025 Reel 71889, frame 496 | U.S. Bank National Association, as Successor to Mufg Union Bank, N.A. | Consensus Cloud Solutions, LLC F/K/A J2 Cloud Services, LLC | 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
Feb 2033
Term ends Feb 10, 2033. Maintenance fees still fall due before then
Note
The 513 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2015 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.