Term ends Feb 14, 2033 · High confidence
20-year base term ends Jan 6, 2031
Held by Siemens Aktiengesellschaft
Filed Jan 6, 2011 as application 12/985,553 · Granted Jul 1, 2014
Base term plus 770 days of patent term adjustment (USPTO delay)
Today
2011
2033
Clock starts
Jan 6, 2011
Jan 6, 2011
Term ends
Feb 14, 2033
Feb 14, 2033
Granted
Jul 1, 2014
Jul 1, 2014
base term
patent term adjustment
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
770
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
This patent's term runs 770 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 6, 2011, when this application, 12/985,553, was filed | Jan 6, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +770 days, USPTO patent term adjustment record | Feb 14, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 14, 2033 | 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 | Lapsed on the fee record May 2022 | May 2022 |
| US 8,764,394 | this patent 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 |
|---|---|---|---|
| Sep 16, 2011 Reel 26917, frame 82 | Lee, Ching-pang; Marra, John J. | Siemens Energy, Inc. | Assignment of Assignor's Interest |
| Sep 16, 2011 Reel 26917, frame 104 | Lee, Ching-pang; Marra, John J.; Merrill, Gary B. | Siemens Energy, Inc. | Assignment of Assignor's Interest |
| Oct 11, 2011 Reel 27039, frame 899 | Heneveld, Benjamin E.; Klinger, Jill | Mikro Systems, Inc. | Assignment of Assignor's Interest |
| Mar 6, 2018 reel/frame not recorded | Siemens Energy, Inc. | Siemens Energy, Inc. | Conveyance of Rights |
| Mar 6, 2018 reel/frame not recorded | Siemens Energy, Inc. | Mikro Systems, Inc. | Conveyance of Rights |
| Mar 6, 2018 Reel 45502, frame 701 | Siemens Energy, Inc. | Siemens Energy, Inc.; Mikro Systems, Inc. | Conveyance of Rights |
| May 2, 2018 Reel 45689, frame 611 | Siemens Energy, Inc. | Siemens Aktiengesellschaft | 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
Feb 2033
Term ends Feb 14, 2033. No further fees fall due before then
Note
The 770 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
9
later US patents cite this one
That is above the median 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.