Lapsed Feb 18, 2026 on the fee record · Medium confidence
20-year base term ends Jul 11, 2028
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Third maintenance fee unpaid; grace period ended.
Filed Jun 11, 2012 as application 13/493,701 · Granted Feb 18, 2014
Base term, 20 years from filing
Today
Lapsed Feb 18, 2026
2008
2028
Clock starts
Jul 11, 2008
Jul 11, 2008
No longer in force
Feb 18, 2026
Feb 18, 2026
Granted
Feb 18, 2014
Feb 18, 2014
Term would have run to
Jul 11, 2028
Jul 11, 2028
base term
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
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
18
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jul 11, 2028: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 Jul 11, 2008, when application 12/218,085, the earliest non-provisional in its chain, was filed (this one was filed Jun 11, 2012) | Jul 11, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Feb 18, 2026 | High confidence |
| Computed term end | The steps above, in order | Feb 18, 2026 | Medium confidence |
This family
| US 8,214,404 | Lapsed on the fee record Jul 2020 | Jul 2020 |
| US 9,323,681 | Lapsed on the fee record Apr 2024 | Apr 2024 |
| Application PCT/US2009/003264 | PCT application no patent term | no patent term |
| Application PCT/US2009/004947 | PCT application no patent term | no patent term |
| US 9,342,528 | In force Jul 2031 | Jul 2031 |
| US 8,412,742 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 9,170,953 | In force Sep 2028 | Sep 2028 |
| US 8,655,931 | this patent Feb 2026 | Feb 2026 |
8 of 18 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 |
|---|---|---|---|
| Mar 8, 2018 Reel 45141, frame 856 | Kazar, Michael L. | Arriad, Inc. | Assignment of Assignor's Interest |
| Mar 8, 2018 Reel 45529, frame 384 | Arriad, Inc. | Avere Systems, Inc. | Change of Name |
| Jul 31, 2020 Reel 53373, frame 574 | Avere Systems, Inc. | Microsoft Technology Licensing, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Feb 18, 2026. We will not guess the cap.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2014 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.