Term ends Jul 25, 2027 · High confidence
20-year base term ended Mar 17, 2025
Held by TP-Link Systems Inc.
Filed Mar 17, 2005 as application 11/084,388 · Granted Apr 7, 2009
Base term plus 860 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Mar 17, 2005
Mar 17, 2005
Term ends
Jul 25, 2027
Jul 25, 2027
Granted
Apr 7, 2009
Apr 7, 2009
base term
patent term adjustment
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
860
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 860 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 Mar 17, 2005, when this application, 11/084,388, was filed | Mar 17, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +860 days, USPTO patent term adjustment record | Jul 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 | Jul 25, 2027 | High confidence |
This family
| US 7,515,179 | this patent Jul 2027 | Jul 2027 |
| US 8,279,302 | Term ended Oct 2026 | Oct 2026 |
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 |
|---|---|---|---|
| Mar 17, 2005 Reel 16399, frame 47 | Han, Hyung-jun; Lim, Moo-sup | Magnachip Semiconductor, Ltd. | Assignment of Assignor's Interest |
| Feb 18, 2009 Reel 22277, frame 133 | Magnachip Semiconductor, Ltd. | U.S. Bank National Association, as Collateral Trustee | After-Acquired Intellectual Property Kun-Pledge Agreement |
| May 30, 2009 Reel 22764, frame 270 | Magnachip Semiconductor, Ltd. | Crosstek Capital, LLC | Assignment of Assignor's Interest |
| Jun 17, 2009 Reel 22824, frame 935 | Magnachip Semiconductor, Ltd. | Crosstek Capital, LLC | Confirmatory Assignment |
| Aug 10, 2009 Reel 23075, frame 54 | U.S. Bank National Association, as Collateral Trustee | Magnachip Semiconductor, Ltd. | Partial Release of Security Interest |
| Jul 22, 2011 Reel 26637, frame 632 | Crosstek Capital, LLC | Intellectual Ventures II LLC | Merger |
| Mar 15, 2024 Reel 66791, frame 849 | Intellectual Ventures II LLC | Intellectual Ventures Assets 192 LLC | Assignment of Assignor's Interest |
| Apr 17, 2024 Reel 67142, frame 902 | Intellectual Ventures Assets 192 LLC | TP-Link USA Corporation | Assignment of Assignor's Interest |
| Dec 18, 2024 Reel 69715, frame 940 | TP-Link USA Corporation | TP-Link Systems Inc. | Change of Name |
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
Jul 2027
Term ends Jul 25, 2027. No further fees fall due before then
Note
The 860 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is below 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.