Term ends Dec 3, 2028 · High confidence
20-year base term ends Dec 3, 2028
Held by Wi-LAN Inc.
Filed Jul 8, 2019 as application 16/504,904 · Granted Apr 20, 2021
Base term, 20 years from filing
Today
2008
2028
Clock starts
Dec 3, 2008
Dec 3, 2008
Term ends
Dec 3, 2028
Dec 3, 2028
Granted
Apr 20, 2021
Apr 20, 2021
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,348,463, to Dec 3, 2028. The term already ends on or before that date, so the cap shortened nothing.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
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. 1 of 1 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 3, 2008, when application 12/327,732, the earliest non-provisional in its chain, was filed (this one was filed Jul 8, 2019) | Dec 3, 2028 | 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 10,348,463) | resolves to Dec 3, 2028, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 3, 2028 | High confidence |
This family
| US 8,204,442 | In force Jan 2031 | Jan 2031 |
| US 8,626,072 | In force Dec 2028 | Dec 2028 |
| US 9,509,459 | Lapsed on the fee record Nov 2020 | Nov 2020 |
| US 10,348,463 | In force Dec 2028 | Dec 2028 |
| US 10,985,881 | this patent Dec 2028 | Dec 2028 |
| US 11,824,800 | In force Dec 2028 | Dec 2028 |
| US 12,785,873 | In force Dec 2028 | Dec 2028 |
The applications whose file history this site holds. The family may have others.
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
Dec 2028
Term ends Dec 3, 2028. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,348,463, 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 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.