Lapsed May 6, 2022 on the fee record · High confidence
20-year base term ends Sep 17, 2030
Second maintenance fee unpaid; grace period ended.
Held by Siemens Energy, Inc. and Mikro Systems, Inc.
Filed Sep 17, 2010 as application 12/884,486 · Granted May 6, 2014
Base term, 20 years from filing, plus 901 days of patent term adjustment (USPTO delay)
Today
Lapsed May 6, 2022
2010
2033
Clock starts
Sep 17, 2010
Sep 17, 2010
No longer in force
May 6, 2022
May 6, 2022
Granted
May 6, 2014
May 6, 2014
Term would have run to
Mar 6, 2033
Mar 6, 2033
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
901
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.
25
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 Mar 6, 2033: its 20-year base term plus 901 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 Sep 17, 2010, when this application, 12/884,486, was filed | Sep 17, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +901 days, USPTO patent term adjustment record | Mar 6, 2033 | 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 May 6, 2022 | High confidence |
| Computed term end | The steps above, in order | May 6, 2022 | High confidence |
This family
| US 7,358,502 | Lapsed on the fee record Apr 2016 | Apr 2016 |
| Application 12/238,774 | Abandoned not computed | not computed |
| Application PCT/US2008/013454 | PCT application no patent term | no patent term |
| Application 12/507,503 | Abandoned not computed | not computed |
| US 8,752,386 | In force Apr 2033 | Apr 2033 |
| US 8,535,006 | In force May 2032 | May 2032 |
| US 8,714,926 | this patent May 2022 | May 2022 |
| US 8,764,394 | In force Feb 2033 | Feb 2033 |
8 of 25 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 |
|---|---|---|---|
| Dec 13, 2010 Reel 25578, frame 165 | Siemens Energy, Inc. | Energy, United States Department Of | Confirmatory License |
| Aug 19, 2011 Reel 26779, frame 173 | Lee, Ching-pang; Marra, John J. | Siemens Energy, Inc. | Assignment of Assignor's Interest |
| Aug 14, 2013 Reel 31013, frame 584 | Siemens Energy, Inc. | Siemens Energy, Inc.; Mikro Systems, Inc. | Conveyance of Rights |
| Aug 14, 2013 reel/frame not recorded | Siemens Energy, Inc. | Siemens Energy, Inc. | Conveyance of Rights |
| Aug 14, 2013 reel/frame not recorded | Siemens Energy, Inc. | Mikro Systems, Inc. | Conveyance of Rights |
| Aug 5, 2015 Reel 36287, frame 525 | Siemens Energy, Inc. | Energy, United States Department Of | Confirmatory License |
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 901 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
33
later US patents cite this one
That is top 25% 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.