Collateral for a security interest recorded Nov 4, 2024 (Wilmington Trust, National Association).
Term ends Feb 23, 2037 · Low confidence
20-year base term ends Feb 23, 2037
Held by Level 3 Communications, LLC
Filed Sep 3, 2020 as application 17/011,133 · Granted Oct 18, 2022
Base term plus 314 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2017
2037
Clock starts
Feb 23, 2017
Feb 23, 2017
Term ends
Feb 23, 2037
Feb 23, 2037
Granted
Oct 18, 2022
Oct 18, 2022
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
314
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,462,104, US 10,771,432.
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.
8
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 314 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 3 maintenance fees is paid so far. 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 Feb 23, 2017, when application 15/440,335, the earliest non-provisional in its chain, was filed (this one was filed Sep 3, 2020); a parent in its chain could not be resolved (the next row) | Feb 23, 2037 | 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 | +314 days, USPTO patent term adjustment record | Jan 3, 2038 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,462,104, US 10,771,432) | capped to Feb 23, 2037 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 15440335, 15440335 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Feb 23, 2037 | Low confidence |
This family
| Application 62/301,392 | Provisional application no patent term | no patent term |
| US 10,462,104 | In force Oct 2037 | Oct 2037 |
| Application PCT/US2017/019049 | PCT application no patent term | no patent term |
| US 10,771,432 | In force Feb 2037 | Feb 2037 |
| US 11,477,162 | this patent Feb 2037 | Feb 2037 |
| US 11,777,901 | In force Feb 2037 | Feb 2037 |
| US 12,028,317 | In force no later than Feb 2037 | no later than Feb 2037 |
| US 12,224,980 | In force Feb 2037 | Feb 2037 |
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 |
|---|---|---|---|
| Sep 9, 2020 Reel 53721, frame 530 | Wang, Jin-gen; Ewert, Travis D. | Level 3 Communications, LLC | Assignment of Assignor's Interest |
| Nov 4, 2024 Reel 69295, frame 749 | Level 3 Communications, LLC; Global Crossing Telecommunications, Inc. | Wilmington Trust, National Association, as Collateral Agent | Notice of Grant of Security Interest in Intellectual Property (Second Lien) |
| Nov 4, 2024 Reel 69295, frame 858 | Level 3 Communications, LLC; Global Crossing Telecommunications, Inc. | Wilmington Trust, National Association, as Collateral Agent | Notice of Grant of Security Interest in Intellectual Property (First Lien) |
| Jun 12, 2026 Reel 75738, frame 427 | Wilmington Trust, National Association, as Retiring Collateral Agent | U.S. Bank Trust Company, National Association, as Successor Collateral Agent | Assignment of First Lien Security Interest in Patent Collateral Recorded at R/F 069295/0858 |
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 2037
Term ends Feb 23, 2037. Maintenance fees still fall due before then
Note
The 314 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 10,462,104, US 10,771,432.
Citations
6
later US patents cite this one
That is top 25% of utility patents granted in 2022 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.