Term ends Jan 26, 2027 · High confidence
20-year base term ends Jan 26, 2027
Held by Quarterhill Inc.
Filed Sep 28, 2021 as application 17/487,544 · Granted Aug 29, 2023
Base term, 20 years from filing
Today
2007
2027
Clock starts
Jan 26, 2007
Jan 26, 2007
Term ends
Jan 26, 2027
Jan 26, 2027
Granted
Aug 29, 2023
Aug 29, 2023
base term
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,134,426, to Jan 26, 2027. The term already ends on or before that date, so the cap shortened nothing.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
7
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. No maintenance fee can end this term early. 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 Jan 26, 2007, when application 11/627,897, the earliest non-provisional in its chain, was filed (this one was filed Sep 28, 2021) | Jan 26, 2027 | 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 | Disclaimer resolved from the filed document (refs US 11,134,426) | resolves to Jan 26, 2027, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | No maintenance fee can end the term early | In force | High confidence |
| Computed term end | The steps above, in order | Jan 26, 2027 | High confidence |
This family
| US 8,548,520 | Lapsed on the fee record Oct 2025 | Oct 2025 |
| US 9,723,529 | In force Jan 2027 | Jan 2027 |
| US 10,231,161 | In force Jan 2027 | Jan 2027 |
| US 10,694,440 | In force Jan 2027 | Jan 2027 |
| US 11,134,426 | In force Jan 2027 | Jan 2027 |
| US 11,743,792 | this patent Jan 2027 | Jan 2027 |
| US 12,149,999 | In force Jan 2027 | Jan 2027 |
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 14, 2021 Reel 57792, frame 7 | Connors, Dennis P.; Marsh, Gene W. | Nextwave Broadband Inc. | Assignment of Assignor's Interest |
| Oct 14, 2021 Reel 57792, frame 75 | Nextwave Broadband Inc. | Wi-Lan Inc. | Assignment of Assignor's Interest |
| Nov 8, 2024 Reel 69220, frame 103 | Quarterhill Inc. | Wi-Lan Inc. | Assignment of Assignor's Interest |
| Nov 8, 2024 Reel 69222, frame 129 | Wi-Lan Inc.; Quarterhill Inc. | Quarterhill Inc. | Merger and Change of Name |
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
Jan 2027
Term ends Jan 26, 2027. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,134,426, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2023 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.