Term ends no later than Apr 14, 2028 · Medium confidence
20-year base term ended Feb 9, 2026
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.
Held by Gentex Corporation
Filed Feb 9, 2006 as application 11/350,591 · Granted Mar 22, 2011
Base term plus 795 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Feb 9, 2006
Feb 9, 2006
Ends no later than
Apr 14, 2028
Apr 14, 2028
Granted
Mar 22, 2011
Mar 22, 2011
base term
patent term adjustment
fee events
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
795
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
15
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 795 days past its 20-year base term on 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
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 9, 2006, when this application, 11/350,591, was filed | Feb 9, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +795 days, USPTO patent term adjustment record | Apr 14, 2028 | 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 Apr 14, 2028 | Medium confidence |
This family
| US 7,908,667 | this patent no later than Apr 2028 | no later than Apr 2028 |
| US 8,028,344 | In force Mar 2029 | Mar 2029 |
| US 9,072,328 | Term ended Feb 2026 | Feb 2026 |
| US 9,717,294 | In force Jul 2027 | Jul 2027 |
| US D750,846 | In force Mar 2031 | Mar 2031 |
| US D750,847 | In force Mar 2031 | Mar 2031 |
| US 11,672,296 | Term ended Feb 2026 | Feb 2026 |
| US D895,211 | In force Sep 2035 | Sep 2035 |
8 of 15 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 |
|---|---|---|---|
| Feb 15, 2008 Reel 20517, frame 517 | Rogers, David C.; Rogers, Charles H.; Keith-lucas, Darwin | Artisent, Inc. | Assignment of Assignor's Interest |
| Jul 16, 2012 Reel 28555, frame 164 | Artisent, Inc. | GC Boston Acquisition, LLC | Assignment of Assignor's Interest |
| Jul 16, 2012 Reel 28561, frame 87 | GC Boston Acquisition, LLC | Artisent, LLC | Change of Name |
| Jun 5, 2017 Reel 42597, frame 71 | Artisent, LLC | Gentex Corporation | 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
Apr 2028
Term ends no later than Apr 14, 2028. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 795 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Apr 14, 2028. We will not guess the cap.
Citations
68
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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.