Collateral for a security interest recorded Sep 5, 2024 (HPS Investment Partners, LLC).
Term ends Mar 6, 2038 · High confidence
20-year base term ends Dec 7, 2037
Filed Aug 7, 2018 as application 16/057,114 · Granted May 19, 2020
Base term plus 89 days of patent term adjustment (USPTO delay)
Today
2017
2038
Clock starts
Dec 7, 2017
Dec 7, 2017
Term ends
Mar 6, 2038
Mar 6, 2038
Granted
May 19, 2020
May 19, 2020
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
89
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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 runs 89 days past its 20-year base term on 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 application 15/834,960, the earliest non-provisional in its chain, was filed (this one was filed Aug 7, 2018) | Dec 7, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +89 days, USPTO patent term adjustment record | Mar 6, 2038 | 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 | Mar 6, 2038 | High confidence |
This family
| US 10,666,798 | In force Dec 2037 | Dec 2037 |
| US 10,232,053 | In force Dec 2037 | Dec 2037 |
| US 10,659,485 | this patent 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 |
|---|---|---|---|
| Oct 30, 2018 Reel 47364, frame 489 | Bharrat, Shaun Jaikarran; Chen, Tie Ju | 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 |
| 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
Mar 2038
Term ends Mar 6, 2038. Maintenance fees still fall due before then
Note
The 89 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is top 25% 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.