Collateral for a security interest recorded Jun 1, 2021 (OT WSOU Terrier Holdings, LLC).
Term ends Jan 23, 2028 · High confidence
20-year base term ended Mar 17, 2026
Held by WSOU Investments, LLC
Filed Mar 17, 2006 as application 11/377,578 · Granted Jan 18, 2011
Base term plus 677 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Mar 17, 2006
Mar 17, 2006
Term ends
Jan 23, 2028
Jan 23, 2028
Granted
Jan 18, 2011
Jan 18, 2011
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
677
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
3
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 677 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Mar 17, 2006, when this application, 11/377,578, was filed | Mar 17, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +677 days, USPTO patent term adjustment record | Jan 23, 2028 | 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 | 3 of 3 maintenance fees paid | In force (reinstated) | High confidence |
| Computed term end | The steps above, in order | Jan 23, 2028 | High confidence |
This family
| US 7,872,973 | this patent Jan 2028 | Jan 2028 |
| US 7,873,158 | In force Mar 2029 | Mar 2029 |
| Application PCT/US2007/012373 | PCT application no patent term | no patent term |
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 17, 2006 Reel 17900, frame 184 | Sterne, Jason; Johnson, Robert John; Macdonald, Aaron Maxwell; Grieve, Richard; Schriel, James Michael | Alcatel | Assignment of Assignor's Interest |
| Nov 19, 2010 Reel 25410, frame 78 | Alcatel | Alcatel Lucent | Change of Name |
| Sep 21, 2017 Reel 43966, frame 574 | WSOU Investments, LLC | Omega Credit Opportunities Master Fund, LP | Security Interest |
| Sep 25, 2017 Reel 44000, frame 53 | Alcatel Lucent | WSOU Investments, LLC | Assignment of Assignor's Interest |
| May 21, 2019 Reel 49246, frame 405 | Oco Opportunities Master Fund, L.P. (F/K/A Omega Credit Opportunities Master Fund LP | WSOU Investments, LLC | Release of Security Interest |
| Jun 1, 2021 Reel 56990, frame 81 | WSOU Investments, LLC | OT WSOU Terrier Holdings, LLC | Security Interest |
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 2028
Term ends Jan 23, 2028. No further fees fall due before then
Note
The 677 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
53
later US patents cite this one
That is top 25% of utility patents granted in 2011 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.