Lapsed Apr 26, 2024 on the fee record · High confidence
20-year base term ends Sep 18, 2028
Second maintenance fee unpaid; grace period ended.
Filed Sep 18, 2008 as application 12/283,961 · Granted Apr 26, 2016
Base term, 20 years from filing, plus 1260 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Apr 26, 2024
2008
2028
Clock starts
Sep 18, 2008
Sep 18, 2008
No longer in force
Apr 26, 2024
Apr 26, 2024
Granted
Apr 26, 2016
Apr 26, 2016
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
1,260
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,248,655, US 10,769,108.
1 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 plus 1260 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Sep 18, 2008, when this application, 12/283,961, was filed | Sep 18, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1260 days, USPTO patent term adjustment record | Mar 1, 2032 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,248,655, US 10,769,108) | capped to Jul 11, 2028 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 26, 2024 | High confidence |
| Computed term end | The steps above, in order | Apr 26, 2024 | High confidence |
This family
| US 8,214,404 | Lapsed on the fee record Jul 2020 | Jul 2020 |
| US 9,323,681 | this patent 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 | Lapsed on the fee record 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 |
|---|---|---|---|
| Nov 19, 2008 Reel 21863, frame 933 | Apostolides, Vasilis J.; Bertschi, Jason; Boyles, John R.; Kazar, Michael L.; Hosteny, Joseph Nevi Iv | Avere Systems, Inc. | Assignment of Assignor's Interest |
| 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
The 1260 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 10,248,655, US 10,769,108.
Citations
669
later US patents cite this one
That is top 1% of utility patents granted in 2016 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.