Also listed on Ixys CH GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded May 15, 2024 (U.S. Bank National Association).
Term ends Apr 18, 2031 · High confidence
20-year base term ends Nov 28, 2028
Held by Universal Electronics Inc.
Filed Nov 28, 2008 as application 12/315,169 · Granted Apr 23, 2013
Base term plus 871 days of patent term adjustment (USPTO delay)
Today
2008
2031
Clock starts
Nov 28, 2008
Nov 28, 2008
Term ends
Apr 18, 2031
Apr 18, 2031
Granted
Apr 23, 2013
Apr 23, 2013
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
871
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.
8
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 871 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 Nov 28, 2008, when this application, 12/315,169, was filed | Nov 28, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +871 days, USPTO patent term adjustment record | Apr 18, 2031 | 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 | Apr 18, 2031 | High confidence |
This family
| US 8,427,356 | this patent Apr 2031 | Apr 2031 |
| US 8,941,531 | In force Nov 2028 | Nov 2028 |
| US 9,712,875 | In force Apr 2029 | Apr 2029 |
| US 10,462,525 | In force Jun 2029 | Jun 2029 |
| US 11,184,674 | In force Apr 2029 | Apr 2029 |
| US 11,736,770 | In force Nov 2028 | Nov 2028 |
| US 12,316,915 | In force no later than Nov 2028 | no later than Nov 2028 |
| Application 19/207,554 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Nov 28, 2008 Reel 21954, frame 4 | Satish, Ramaiah | Zilog, Inc. | Assignment of Assignor's Interest |
| Sep 30, 2010 Reel 25066, frame 847 | Zilog, Inc. | Ixys CH GmbH | Assignment of Assignor's Interest |
| Feb 9, 2011 Reel 25779, frame 119 | Zilog, Inc. | Ixys CH GmbH | Corrective Assignment to Correct the Incorrect Inclusion of Application 11/731423 with the Other 39 Patent Documents Being Assigned and Previously Recorded on Reel 025066 Frame 0847.ASSIGNOR(S) Hereby Confirms the Sale and Assignment of the Patent Documents Listed in Annex a of the Recorded Patent Assignment |
| Apr 4, 2011 Reel 26074, frame 359 | Zilog, Inc. | Ixys CH GmbH | Corrective Assignment to Correct the Incorrect Inclusion of Application 11/731423 with the Other 39 Patent Document Beeing Assigned and Previously Recorded on Reel 025066 Frame 0847. Assignor(S) Hereby Confirms the Sale and Assignment of Patent Documents Listed in Annex a of the Recorded Patent Assignment. |
| Sep 8, 2011 Reel 26871, frame 319 | Ixys CH GmbH | Uei Cayman Inc. | Assignment of Assignor's Interest |
| Apr 28, 2016 Reel 38402, frame 250 | Uei Cayman Inc. | C.G. Development Limited | Assignment of Assignor's Interest |
| Apr 29, 2016 Reel 38416, frame 581 | C.G. Development Limited; Uei Cayman Inc. | Universal Electronics Inc. | Assignment of Assignor's Interest |
| May 15, 2024 Reel 67417, frame 402 | Universal Electronics Inc. | U.S. Bank National Association | 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
Apr 2031
Term ends Apr 18, 2031. No further fees fall due before then
Note
The 871 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
49
later US patents cite this one
That is top 25% of utility patents granted in 2013 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.