Term ended May 24, 2026 · High confidence
20-year base term ended Dec 16, 2022
Held by Servstor Technologies, LLC
Filed Jan 31, 2006 as application 11/344,874 · Granted Mar 29, 2011
Base term plus 1255 days of patent term adjustment (USPTO delay)
Today
Term ended May 24, 2026
2002
2026
Clock starts
Dec 16, 2002
Dec 16, 2002
Term ended
May 24, 2026
May 24, 2026
Granted
Mar 29, 2011
Mar 29, 2011
base term
patent term adjustment
after the term ends
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
1,255
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.
9
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 1255 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 Dec 16, 2002, when application PCT/US2002/040205, the earliest non-provisional in its chain, was filed (this one was filed Jan 31, 2006) | Dec 16, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1255 days, USPTO patent term adjustment record | May 24, 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 | May 24, 2026 | High confidence |
This family
| US 7,643,476 | Term ended no later than Jan 2026 | no later than Jan 2026 |
| US 7,602,773 | Term ended Nov 2026 | Nov 2026 |
| US 7,698,526 | Term ended Apr 2026 | Apr 2026 |
| US 7,688,814 | Term ended Oct 2025 | Oct 2025 |
| US 7,742,473 | Term ended Nov 2024 | Nov 2024 |
| US 7,649,880 | Term ended Feb 2025 | Feb 2025 |
| US 7,916,727 | this patent May 2026 | May 2026 |
| US 8,694,640 | Term ended Jun 2023 | Jun 2023 |
8 of 9 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Jun 20, 2007 Reel 19453, frame 845 | Zetera Corporation | Cortright Family Trust, Dated May 13, 1998 | Security Agreement |
| Jul 20, 2007 Reel 19583, frame 681 | Zetera Corporation | The Frank Revocable Living Trust of Charles W. Frank and Karen L. Frank | Security Agreement |
| Oct 5, 2007 Reel 19927, frame 793 | Zetera Corporation | Warburg Pincus Private Equity VIII, L.P. | Security Agreement |
| Mar 31, 2008 Reel 20730, frame 351 | Frank, Charles William; Ludwig, Thomas Earl; Hanan, Thomas; Babbit, William R. | Zetera Corporation | Assignment of Assignor's Interest |
| Mar 31, 2008 Reel 20730, frame 401 | Frank, Charles William; Ludwig, Thomas Earl; Hanan, Thomas D.; Babbit, William R.; Zetera Corporation, California Corporation | Zetera Corporation, Delaware Corporation | Merger |
| Apr 18, 2008 Reel 20823, frame 949 | The Frank Revocable Living Trust of Charles W. Frank and Karen L. Frank | Zetera Corporation | Release of Security Interest |
| Apr 18, 2008 Reel 20824, frame 74 | Warburg Pincus Private Equity VIII, L.P. | Zetera Corporation | Release of Security Interest |
| Apr 18, 2008 Reel 20824, frame 376 | Cortright Family Trust, Dated May 13, 1998 | Zetera Corporation | Release of Security Interest |
| Apr 29, 2008 Reel 20866, frame 888 | Zetera Corporation | Rateze Remote MGMT. L.L.C. | Assignment of Assignor's Interest |
| Apr 20, 2020 Reel 52437, frame 635 | Rateze Remote MGMT. L.L.C. | Intellectual Ventures I LLC | Assignment of Assignor's Interest |
| Aug 24, 2021 Reel 57274, frame 141 | Intellectual Ventures I LLC | Intellectual Ventures Assets 177 LLC | Assignment of Assignor's Interest |
| Jan 4, 2022 Reel 58537, frame 356 | Intellectual Ventures Assets 177 LLC | Servstor Technologies, 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
Note
The 1255 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2011 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.