Lapsed Sep 22, 2019 on the fee record · Medium confidence
20-year base term ended Dec 5, 2025
Why Medium: A parent in the chain could not be resolved.
First maintenance fee unpaid; grace period ended.
Held by Fortinet, Inc.
Filed Jul 1, 2009 as application 12/496,426 · Granted Sep 22, 2015
Base term, 20 years from filing, plus 990 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 22, 2019
2005
2028
Clock starts
Dec 5, 2005
Dec 5, 2005
No longer in force
Sep 22, 2019
Sep 22, 2019
Granted
Sep 22, 2015
Sep 22, 2015
Term would have run to
Aug 21, 2028
Aug 21, 2028
base term
patent term adjustment
after the term ends
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
990
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
24
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 Aug 21, 2028: its 20-year base term plus 990 days of term adjustment for prosecution delay. 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 Dec 5, 2005, when application 11/294,673, the earliest non-provisional in its chain, was filed (this one was filed Jul 1, 2009); a parent in its chain could not be resolved (the next row) | Dec 5, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +990 days, USPTO patent term adjustment record | Aug 21, 2028 | 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 | 0 of 3 maintenance fees paid | lapsed Sep 22, 2019 | High confidence |
| Computed term end | The steps above, in order | Sep 22, 2019 | Medium confidence |
This family
| US 8,160,664 | In force Nov 2027 | Nov 2027 |
| Application 11/298,864 | Abandoned not computed | not computed |
| US 8,064,601 | In force Oct 2028 | Oct 2028 |
| US 7,826,426 | In force Aug 2027 | Aug 2027 |
| US 9,215,745 | Term ended Dec 2025 | Dec 2025 |
| US 8,103,311 | In force Nov 2027 | Nov 2027 |
| US 8,344,953 | In force Mar 2031 | Mar 2031 |
| US 9,142,873 | this patent Sep 2019 | Sep 2019 |
8 of 24 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 14, 2012 Reel 28375, frame 126 | Meru Networks, Inc. | Venture Lending & Leasing VI, Inc. | Security Agreement |
| Jun 5, 2015 Reel 35841, frame 170 | Venture Lending & Leasing VI, Inc. | Meru Networks, Inc. | Release of Security Interest |
| Jul 8, 2015 Reel 36083, frame 264 | Opus Bank | Meru Networks, Inc. | Release of Security Interest |
| Jan 23, 2018 Reel 45112, frame 786 | Meru Networks, Inc. | Fortinet, LLC | Merger |
| Feb 28, 2018 Reel 45474, frame 392 | Meru Networks, Inc. | Fortinet, Inc. | Merger |
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 990 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
5
later US patents cite this one
That is below the median of utility patents granted in 2015 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.