Also listed on Sandforce, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 11, 2031 · High confidence
20-year base term ends Mar 21, 2031
Held by Seagate Technology LLC
Filed Mar 21, 2011 as application 13/053,175 · Granted Jul 19, 2016
Base term plus 21 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Mar 21, 2011
Mar 21, 2011
Term ends
Apr 11, 2031
Apr 11, 2031
Granted
Jul 19, 2016
Jul 19, 2016
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
21
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 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 21 days past its 20-year base term on prosecution delay. 2 of 3 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 Mar 21, 2011, when this application, 13/053,175, was filed | Mar 21, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +21 days, USPTO patent term adjustment record | Apr 11, 2031 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 11, 2031 | 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 |
|---|---|---|---|
| Dec 16, 2011 Reel 27399, frame 385 | Danilak, Radoslav; Steffko, Ladislav; Mullendore, Rodney | Sandforce, Inc. | Assignment of Assignor's Interest |
| Aug 22, 2013 Reel 31064, frame 312 | Sandforce, Inc. | LSI Corporation | Assignment of Assignor's Interest |
| Nov 6, 2014 Reel 34177, frame 257 | Deutsche Bank AG New York Branch, as Collateral Agent | LSI Corporation; Agere Systems LLC | Termination and Release of Security Interest in Certain Patents Included in Security Interest Previously Recorded at Reel/Frame (032856/0031) |
| Nov 6, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | LSI Corporation | Termination and Release of Security Interest in Certain Patents Included in Security Interest Previously Recorded at Reel/Frame (032856/0031) |
| Nov 6, 2014 reel/frame not recorded | Deutsche Bank AG New York Branch, as Collateral Agent | Agere Systems LLC | Termination and Release of Security Interest in Certain Patents Included in Security Interest Previously Recorded at Reel/Frame (032856/0031) |
| Jan 21, 2015 Reel 34774, frame 418 | LSI Corporation | Seagate Technology LLC | Assignment of Assignor's 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.
What's changing
Apr 2031
Term ends Apr 11, 2031. Maintenance fees still fall due before then
Note
The 21 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
7
later US patents cite this one
That is above the median of utility patents granted in 2016 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.