Also listed on LSI Logic Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ended Nov 2, 2026 · High confidence
20-year base term ended May 13, 2025
Held by Bell Semiconductor, LLC
Filed May 13, 2005 as application 11/129,547 · Granted May 13, 2008
Base term plus 538 days of patent term adjustment (USPTO delay)
Today
Term ended Nov 2, 2026
2005
2026
Clock starts
May 13, 2005
May 13, 2005
Term ended
Nov 2, 2026
Nov 2, 2026
Granted
May 13, 2008
May 13, 2008
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
538
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 538 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 May 13, 2005, when this application, 11/129,547, was filed | May 13, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +538 days, USPTO patent term adjustment record | Nov 2, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 2, 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 |
|---|---|---|---|
| May 13, 2005 Reel 16571, frame 747 | Savage, Scott C.; McGrath, Donald T.; Waldron, Robert D.; Richardson, Kenneth G. | LSI Logic Corporation | Assignment of Assignor's Interest |
| May 8, 2014 Reel 32856, frame 31 | LSI Corporation; Agere Systems LLC | Deutsche Bank AG New York Branch, as Collateral Agent | Patent Security Agreement |
| Jun 6, 2014 Reel 33102, frame 270 | LSI Logic Corporation | LSI Corporation | Change of Name |
| Apr 3, 2015 Reel 35390, frame 388 | LSI Corporation | Avago Technologies General IP (Singapore) Pte. Ltd. | Assignment of Assignor's Interest |
| Feb 2, 2016 Reel 37684, frame 39 | Deutsche Bank AG New York Branch, as Collateral Agent | LSI Corporation; Agere Systems LLC | Termination and Release of Security Interest in Patent Rights (Releases RF 032856-0031) |
| Feb 2, 2016 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | LSI Corporation | Termination and Release of Security Interest in Patent Rights (Releases RF 032856-0031) |
| Feb 2, 2016 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Agere Systems LLC | Termination and Release of Security Interest in Patent Rights (Releases RF 032856-0031) |
| Feb 11, 2016 Reel 37808, frame 1 | Avago Technologies General IP (Singapore) Pte. Ltd. | Bank of America, N.A., as Collateral Agent | Patent Security Agreement |
| Feb 3, 2017 Reel 41710, frame 1 | Bank of America, N.A., as Collateral Agent | Avago Technologies General IP (Singapore) Pte. Ltd. | Termination and Release of Security Interest in Patents |
| Dec 17, 2017 Reel 44887, frame 109 | Avago Technologies General IP (Singapore) Pte. Ltd.; Broadcom Corporation | Bell Semiconductor, LLC | Assignment of Assignor's Interest |
| Feb 1, 2018 Reel 45216, frame 20 | Hilco Patent Acquisition 56, LLC; Bell Semiconductor, LLC; Bell Northern Research, LLC | Cortland Capital Market Services LLC, as Collateral Agent | Security Interest |
| Apr 15, 2022 Reel 59720, frame 223 | Cortland Capital Market Services LLC | Hilco Patent Acquisition 56, LLC; Bell Semiconductor, LLC; Bell Northern Research, LLC | Release of Security Interest |
| Apr 15, 2022 reel/frame not recorded | Cortland Capital Market Services LLC | Hilco Patent Acquisition 56, LLC | Release of Security Interest |
| Apr 15, 2022 reel/frame not recorded | Cortland Capital Market Services LLC | Bell Semiconductor, LLC | Release of Security Interest |
| Apr 15, 2022 reel/frame not recorded | Cortland Capital Market Services LLC | Bell Northern Research, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 538 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
5
later US patents cite this one
That is below the median of utility patents granted in 2008 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.