Term ends no later than Mar 20, 2028 · Medium confidence
20-year base term ends Mar 20, 2028
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Mar 20, 2008
Mar 20, 2028
Aug 26, 2014
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 20, 2008, when application 12/052,721, the earliest non-provisional in its chain, was filed (this one was filed Jun 3, 2013) | Mar 20, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Mar 20, 2028 | Medium confidence |
This family
| US 8,110,425 | Lapsed on the fee record Feb 2024 | Feb 2024 |
| US 8,455,285 | In force Mar 2028 | Mar 2028 |
| US 8,815,622 | this patent no later than Mar 2028 | no later than Mar 2028 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Mar 6, 2014 Reel 32363, frame 934 | Yun, Feng | Luminus Devices, Inc. | Assignment of Assignor's Interest |
| Oct 15, 2015 Reel 36869, frame 355 | Luminus Devices, Inc. | East West Bank | Security Interest |
| Jan 8, 2018 Reel 45020, frame 103 | East West Bank | Luminus Devices, Inc. | 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.
What's changing
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Mar 20, 2028. We will not guess the cap.