Also listed on Silicon Graphics, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 25, 2027 · High confidence
20-year base term ended Apr 30, 2023
Held by Google LLC
Filed Apr 30, 2003 as application 10/426,003 · Granted Oct 16, 2012
Base term plus 1397 days of patent term adjustment (USPTO delay)
Today
2003
2027
Clock starts
Apr 30, 2003
Apr 30, 2003
Term ends
Feb 25, 2027
Feb 25, 2027
Granted
Oct 16, 2012
Oct 16, 2012
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
1,397
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 1397 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 30, 2003, when this application, 10/426,003, was filed | Apr 30, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1397 days, USPTO patent term adjustment record | Feb 25, 2027 | 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 | Feb 25, 2027 | High confidence |
This family
| US 8,291,009 | this patent Feb 2027 | Feb 2027 |
| US 8,924,473 | Term ended Apr 2023 | Apr 2023 |
| US 9,117,288 | Term ended Apr 2023 | Apr 2023 |
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 |
|---|---|---|---|
| Oct 28, 2004 Reel 15310, frame 265 | Chalfin, Alexander; Kaulgud, Alpana | Silicon Graphics, Inc. | Assignment of Assignor's Interest |
| Feb 8, 2005 Reel 15659, frame 651 | Peercy, Mark S. | Silicon Graphics, Inc. | Agreement |
| Aug 19, 2005 Reel 16871, frame 809 | Silicon Graphics, Inc. and Silicon Graphics Federal, Inc. (Each a Delaware Corporation) | Wells Fargo Foothill Capital, Inc. | Security Agreement |
| Oct 24, 2006 Reel 18545, frame 777 | Silicon Graphics, Inc. | General Electric Capital Corporation | Security Interest |
| Oct 18, 2007 Reel 19995, frame 895 | General Electric Capital Corporation | Morgan Stanley & Co., Incorporated | Assignment of Assignor's Interest |
| Mar 21, 2012 Reel 27904, frame 315 | Silicon Graphics, Inc. et Al.; Sgi International, Inc. | Silicon Graphics International, Corp. | Assignment of Assignor's Interest |
| Apr 17, 2014 Reel 32704, frame 426 | Silicon Graphics, Inc. | Silicon Graphics International, Inc. | Assignment of Assignor's Interest |
| Apr 17, 2014 Reel 32704, frame 609 | Sgi International, Inc. | Silicon Graphics International Corp. | Merger |
| Apr 17, 2014 Reel 32712, frame 751 | Silicon Graphics International, Inc. | Sgi International, Inc. | Change of Name |
| Mar 13, 2015 Reel 35200, frame 722 | Silicon Graphics International Corp. | Morgan Stanley Senior Funding, Inc. | Security Interest |
| Jul 25, 2016 Reel 39461, frame 418 | Wells Fargo Foothill Capital, Inc. | Silicon Graphics Inc. | Order. . . Authorizing the Sale of All or Substantially All of the Assets of the Debtors Free and Clear of All Liens, Claims, Encumbrances, and Interests. |
| Jul 25, 2016 Reel 39461, frame 713 | Morgan Stanley & Co., Incorporated | Silicon Graphics, Inc. | Order. . .authorizing the Sale of All or Substantially All of the Assets of the Debtors Free and Clear of All Liens, Claims, Encumbrances, and Interests. |
| Nov 2, 2016 Reel 40545, frame 362 | Morgan Stanley Senior Funding, Inc., as Agent | Silicon Graphics International Corp. | Release of Security Interest |
| Oct 4, 2017 Reel 44128, frame 149 | Silicon Graphics International Corp. | Hewlett Packard Enterprise Development LP | Assignment of Assignor's Interest |
| May 30, 2018 Reel 45933, frame 1 | Hewlett Packard Enterprise Development LP | Google 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2027
Term ends Feb 25, 2027. No further fees fall due before then
Note
The 1397 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
36
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.