Collateral for a security interest recorded Sep 5, 2024 (HPS Investment Partners, LLC).
Term ends Nov 12, 2038 · Medium confidence
20-year base term ends Aug 7, 2038
Why Medium: A parent in the chain could not be resolved.
Filed Feb 22, 2019 as application 16/283,600 · Granted Feb 23, 2021
Base term plus 97 days of patent term adjustment (USPTO delay)
Today
2018
2038
Clock starts
Aug 7, 2018
Aug 7, 2018
Term ends
Nov 12, 2038
Nov 12, 2038
Granted
Feb 23, 2021
Feb 23, 2021
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
97
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 97 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. Confidence: Medium. 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 7, 2018, when the earliest non-provisional application in its chain was filed (this one was filed Feb 22, 2019); a parent in its chain could not be resolved (the next row) | Aug 7, 2038 | 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 | +97 days, USPTO patent term adjustment record | Nov 12, 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 | Nov 12, 2038 | Medium 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 | In force Mar 2038 | Mar 2038 |
| Application 16/253,056 | Abandoned not computed | not computed |
| US 10,931,696 | this patent 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 |
|---|---|---|---|
| Mar 14, 2019 Reel 48604, frame 81 | Thornton, Timothy R.; Bharrat, Shaun Jaikarran | Ribbon Communications Operating Company, Inc. | Assignment of Assignor's Interest |
| Mar 28, 2019 Reel 48727, frame 182 | Hart, Justin | Ribbon Communications Operating Company, Inc. | Assignment of Assignor's Interest |
| Apr 10, 2019 Reel 48842, frame 970 | Kuppanna, Sridhar; Ahmed, Dilnawaj; Riley, Kevin | Ribbon Communications Operating Company, Inc. | Assignment of Assignor's Interest |
| Mar 3, 2020 Reel 52076, frame 905 | Ribbon Communications Operating Company, Inc. | Citizens Bank, N.A., as Administrative Agent | Security Interest |
| Jun 24, 2024 Reel 67822, frame 433 | Citizens Bank, N.a. | Ribbon Communications Operating Company, Inc. (F/K/A Genband US LLC and Sonus Networks, Inc.) | Release of Security Interest |
| 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
Nov 2038
Term ends Nov 12, 2038. Maintenance fees still fall due before then
Note
The 97 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
47
later US patents cite this one
That is top 5% of utility patents granted in 2021 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.