Also listed on Qlogic System Interconnect Group, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 23, 2027 · High confidence
20-year base term ended May 25, 2025
Held by Tahoe Research, Ltd.
Filed May 25, 2005 as application 11/137,925 · Granted Jul 14, 2009
Base term plus 728 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
May 25, 2005
May 25, 2005
Term ends
May 23, 2027
May 23, 2027
Granted
Jul 14, 2009
Jul 14, 2009
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
728
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.
2
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 728 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 May 25, 2005, when this application, 11/137,925, was filed | May 25, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +728 days, USPTO patent term adjustment record | May 23, 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 | May 23, 2027 | High confidence |
This family
| US 7,561,567 | this patent May 2027 | May 2027 |
| US 7,903,660 | Lapsed on the fee record Mar 2019 | Mar 2019 |
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 |
|---|---|---|---|
| Aug 18, 2005 Reel 16648, frame 696 | Olson, Dave; Lindahl, Gregory B.; Rubin, Jeffrey B. | Pathscale, Inc. | Assignment of Assignor's Interest |
| Feb 7, 2007 Reel 18865, frame 862 | Pathscale, Inc. | Qlogic System Interconnect Group, Inc. | Change of Name |
| Feb 13, 2007 Reel 18886, frame 346 | Qlogic System Interconnect Group, Inc. | Qlogic, Corporation | Assignment of Assignor's Interest |
| May 7, 2012 Reel 28168, frame 202 | Qlogic Corporation | Intel Corporation | Assignment of Assignor's Interest |
| Aug 15, 2022 Reel 61175, frame 176 | Intel Corporation | Tahoe Research, Ltd. | 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
May 2027
Term ends May 23, 2027. No further fees fall due before then
Note
The 728 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2009 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.