Lapsed Jul 3, 2020 on the fee record · High confidence
20-year base term ends Jul 11, 2028
Second maintenance fee unpaid; grace period ended.
Filed Jul 11, 2008 as application 12/218,085 · Granted Jul 3, 2012
Base term, 20 years from filing, plus 527 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 3, 2020
2008
2029
Clock starts
Jul 11, 2008
Jul 11, 2008
No longer in force
Jul 3, 2020
Jul 3, 2020
Granted
Jul 3, 2012
Jul 3, 2012
Term would have run to
Dec 20, 2029
Dec 20, 2029
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
527
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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 Dec 20, 2029: its 20-year base term plus 527 days of term adjustment for prosecution delay. 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 Jul 11, 2008, when this application, 12/218,085, was filed | Jul 11, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +527 days, USPTO patent term adjustment record | Dec 20, 2029 | 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 | 1 of 3 maintenance fees paid | lapsed Jul 3, 2020 | High confidence |
| Computed term end | The steps above, in order | Jul 3, 2020 | High confidence |
This family
| US 8,214,404 | this patent 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 | 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 |
|---|---|---|---|
| Sep 23, 2008 Reel 21575, frame 582 | Kazar, Michael L. | Arriad, Inc. | Assignment of Assignor's Interest |
| Oct 31, 2008 Reel 21774, frame 334 | Arriad, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 527 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
66
later US patents cite this one
That is top 10% of utility patents granted in 2012 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.