Collateral for a security interest recorded Jun 1, 2021 (OT WSOU Terrier Holdings, LLC).
Term ends Nov 26, 2026 · High confidence
20-year base term ended Nov 12, 2024
Held by WSOU Investments, LLC
Filed Nov 12, 2004 as application 10/987,944 · Granted Aug 18, 2015
Base term plus 744 days of patent term adjustment (USPTO delay)
Today
2004
2026
Clock starts
Nov 12, 2004
Nov 12, 2004
Term ends
Nov 26, 2026
Nov 26, 2026
Granted
Aug 18, 2015
Aug 18, 2015
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
744
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
This patent's term runs 744 days past its 20-year base term on prosecution delay. 2 of 2 maintenance fees are 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 Nov 12, 2004, when this application, 10/987,944, was filed | Nov 12, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +744 days, USPTO patent term adjustment record | Nov 26, 2026 | 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 | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 26, 2026 | High confidence |
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 |
|---|---|---|---|
| Jan 7, 2005 Reel 16141, frame 3 | Cheng, Fang-chen; Charriere, Patrick Georges | Lucent Technologies, Inc. | Assignment of Assignor's Interest |
| Mar 7, 2013 Reel 30510, frame 627 | Alcatel-Lucent USA Inc. | Credit Suisse AG | Security Interest |
| Sep 5, 2013 Reel 31140, frame 938 | Sapiano, Philip Charles | Lucent Technologies, Inc. | Assignment of Assignor's Interest |
| Oct 9, 2014 Reel 33949, frame 16 | Credit Suisse AG | Alcatel-Lucent USA Inc. | Release of Security Interest |
| Jun 25, 2015 Reel 35906, frame 587 | Lucent Technologies Inc.; Alcatel USA Marketing, Inc.; Alcatel USA Sourcing, Inc.; Lucent Technologies Inc. | Alcatel-Lucent USA Inc. | Merger and Change of Name |
| Jun 30, 2015 Reel 35939, frame 23 | Alcatel-Lucent USA Inc. | Alcatel Lucent | Assignment of Assignor's Interest |
| Feb 29, 2016 Reel 37977, frame 782 | Sapiano, Philip Charles | Lucent Technologies, Inc. | Corrective Assignment to Correct the Nature of Conveyance to Nunc Pro Tunc Assignment Effective 11-12-2004 Previously Recorded at Reel: 031140 Frame: 0938. Assignor(S) Hereby Confirms the Nun Pro Tunc Assignment. |
| Jan 18, 2018 Reel 45085, frame 1 | Alcatel Lucent | WSOU Investments, LLC | Assignment of Assignor's 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
Nov 2026
Term ends Nov 26, 2026. No further fees fall due before then
Note
The 744 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
38
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.