Lapsed Oct 11, 2015 on the fee record · High confidence
20-year base term ends Feb 14, 2027
First maintenance fee unpaid; grace period ended.
Held by Power Analytics Corporation
Filed Apr 12, 2007 as application 11/734,709 · Granted Oct 11, 2011
Base term, 20 years from filing, plus 975 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Oct 11, 2015
2007
2028
Clock starts
Feb 14, 2007
Feb 14, 2007
No longer in force
Oct 11, 2015
Oct 11, 2015
Granted
Oct 11, 2011
Oct 11, 2011
Term would have run to
Apr 23, 2028
Apr 23, 2028
base term
patent term adjustment
after the term ends
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
975
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 8,959,006.
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.
91
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 Apr 23, 2028: its 20-year base term plus 975 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 Feb 14, 2007, when application 11/674,994, the earliest non-provisional in its chain, was filed (this one was filed Apr 12, 2007) | Feb 14, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +975 days, USPTO patent term adjustment record | Oct 16, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,959,006) | capped to Apr 23, 2028 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Oct 11, 2015 | High confidence |
| Computed term end | The steps above, in order | Oct 11, 2015 | High confidence |
This family
| US 7,826,990 | In force Jun 2029 | Jun 2029 |
| US 7,844,439 | In force Nov 2028 | Nov 2028 |
| Application PCT/US2007/006195 | PCT application no patent term | no patent term |
| US 8,036,872 | this patent Oct 2015 | Oct 2015 |
| Application PCT/US2007/066567 | PCT application no patent term | no patent term |
| US 7,840,395 | Lapsed on the fee record Nov 2022 | Nov 2022 |
| US 8,959,006 | In force Apr 2028 | Apr 2028 |
| Application PCT/US2007/072344 | PCT application no patent term | no patent term |
8 of 91 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 22, 2007 Reel 19468, frame 90 | Nasle, Adib | Edsa Micro Corporation | Assignment of Assignor's Interest |
| Aug 13, 2010 Reel 24823, frame 959 | Edsa Micro Corporation | DP Three LLC | Security Interest |
| Feb 1, 2012 Reel 27649, frame 941 | Edsa Micro Corporation | Power Analytics Corporation | Change of Name |
| Aug 27, 2014 Reel 33645, frame 715 | DP Three LLC | Power Analytics Corporation | Release of Security 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 975 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 8,959,006.
Citations
91
later US patents cite this one
That is top 10% 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.