Collateral for a security interest recorded Sep 5, 2024 (HPS Investment Partners, LLC).
Term ends Dec 7, 2037 · High confidence
20-year base term ends Dec 7, 2037
Filed Dec 7, 2017 as application 15/834,960 · Granted May 26, 2020
Base term, 20 years from filing
Today
2017
2037
Clock starts
Dec 7, 2017
Dec 7, 2017
Term ends
Dec 7, 2037
Dec 7, 2037
Granted
May 26, 2020
May 26, 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.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
16
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. 1 of 3 maintenance fees is 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 Dec 7, 2017, when this application, 15/834,960, was filed | Dec 7, 2037 | 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 7, 2037 | High confidence |
This family
| US 10,666,798 | this patent Dec 2037 | Dec 2037 |
| US 10,232,053 | In force Dec 2037 | Dec 2037 |
| US 10,659,485 | In force Mar 2038 | Mar 2038 |
| Application 16/253,056 | Abandoned not computed | not computed |
| US 10,931,696 | In force Nov 2038 | Nov 2038 |
| Application 16/474,898 | Abandoned not computed | not computed |
| Application PCT/US2019/041725 | PCT application no patent term | no patent term |
| US 11,271,960 | In force May 2038 | May 2038 |
8 of 16 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 |
|---|---|---|---|
| Dec 12, 2017 Reel 44373, frame 590 | Bharrat, Shaun Jaikarran; Chen, Tie Ju | Sonus Networks, Inc. | Assignment of Assignor's Interest |
| Dec 13, 2017 Reel 44385, frame 192 | Asveren, Tolga | Sonus Networks, Inc. | Assignment of Assignor's Interest |
| Jan 2, 2018 Reel 44978, frame 801 | Genband US LLC; Sonus Networks, Inc. | Silicon Valley Bank, As Administrative Agent | Security Interest |
| Jan 16, 2018 Reel 44627, frame 857 | Kuppanna, Sridhar | Sonus Networks, Inc. | Assignment of Assignor's Interest |
| Jan 16, 2019 Reel 48078, frame 36 | Sonus Networks, Inc. | Ribbon Communications Operating Company, Inc. | Change of Name |
| Dec 6, 2021 Reel 58949, frame 497 | Silicon Valley Bank, As Administrative Agent | Ribbon Communications Operating Company, Inc. (F/K/A Genband US LLC and Sonus Networks, Inc.) | Termination and Release of Patent Security Agreement at R/F 044978/0801 |
| Sep 5, 2024 Reel 68857, frame 290 | Ribbon Communications Operating Company, Inc. | HPS Investment Partners, LLC, as Administrative Agent | Short-Form Patents Security Agreement |
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.
What's changing
Dec 2037
Term ends Dec 7, 2037. Maintenance fees still fall due before then
Citations
45
later US patents cite this one
That is top 5% 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.