Collateral for a security interest recorded May 20, 2019 (BP Funding Trust, Series SPL-VI).
Term ends Dec 1, 2026 · High confidence
20-year base term ended Apr 28, 2023
Held by WSOU Investments, LLC
Filed Apr 28, 2003 as application 10/423,947 · Granted Apr 13, 2010
Base term plus 1313 days of patent term adjustment (USPTO delay)
Today
2003
2026
Clock starts
Apr 28, 2003
Apr 28, 2003
Term ends
Dec 1, 2026
Dec 1, 2026
Granted
Apr 13, 2010
Apr 13, 2010
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
1,313
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.
This patent's term runs 1313 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 Apr 28, 2003, when this application, 10/423,947, was filed | Apr 28, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1313 days, USPTO patent term adjustment record | Dec 1, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 1, 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 |
|---|---|---|---|
| Jun 24, 2003 Reel 14188, frame 249 | Patel, Sarvar | Lucent Technologies Inc. | Assignment of Assignor's Interest |
| Jun 10, 2009 Reel 22803, frame 406 | Lucent Technologies Inc. | Alcatel-Lucent USA Inc. | Merger |
| Mar 7, 2013 Reel 30510, frame 627 | Alcatel-Lucent USA Inc. | Credit Suisse AG | Security Interest |
| Oct 9, 2014 Reel 33950, frame 261 | Credit Suisse AG | Alcatel-Lucent USA Inc. | Release of Security Interest |
| 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 20, 2019 Reel 49235, frame 68 | WSOU Investments, LLC | Bp Funding Trust, Series Spl-vi | Security 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 |
| Jun 3, 2021 Reel 56526, frame 93 | Terrier SSC, LLC | WSOU Investments, LLC | Release of 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
Dec 2026
Term ends Dec 1, 2026. No further fees fall due before then
Note
The 1313 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2010 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.