Collateral for a security interest recorded Sep 23, 2025 (Stellus Capital Investment Corporation).
Term ends Mar 21, 2028 · High confidence
20-year base term ends Mar 21, 2028
Held by Domaille Engineering, LLC
Filed Mar 21, 2008 as application 12/053,136 · Granted Jun 15, 2010
Base term, 20 years from filing
Today
2008
2028
Clock starts
Mar 21, 2008
Mar 21, 2008
Term ends
Mar 21, 2028
Mar 21, 2028
Granted
Jun 15, 2010
Jun 15, 2010
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
This patent's term is its 20-year base term, with no adjustment for 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 Mar 21, 2008, when this application, 12/053,136, was filed | Mar 21, 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 | 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 | Mar 21, 2028 | High confidence |
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 |
|---|---|---|---|
| Jun 5, 2008 Reel 21049, frame 934 | Fredrickson, Brian M.; Schumacher, Greg A.; Christie, Jill B.; Spinler, Curtis J. | Domaille Engineering, LLC | Assignment of Assignor's Interest |
| Jan 20, 2014 Reel 32004, frame 621 | Domaille Engineering, LLC | Domaille Engineering, LLC | Assignment of Assignor's Interest |
| Dec 2, 2016 Reel 40492, frame 937 | Domaille Engineering, LLC | Byline Bank, As Agent | Security Interest |
| Dec 6, 2016 Reel 40536, frame 745 | Domaille Engineering, LLC | Orix Corporate Capital Inc., as Agent | Security Interest |
| Feb 1, 2018 Reel 44796, frame 533 | Domaille Engineering, LLC; Tech Manufacturing, LLC | Byline Bank, As Agent | Security Interest |
| Feb 1, 2019 reel/frame not recorded | Orix Corporate Capital Inc. | Domaille Engineering, LLC | Release of Security Interest |
| Feb 1, 2019 reel/frame not recorded | Orix Corporate Capital Inc. | Tech Manufacturing, LLC | Release of Security Interest |
| Feb 1, 2019 reel/frame not recorded | Byline Bank, As Agent | Domaille Engineering, LLC | Release of Security Interest |
| Feb 1, 2019 reel/frame not recorded | Byline Bank, As Agent | Tech Manufacturing, LLC | Release of Security Interest |
| Feb 1, 2019 Reel 48226, frame 368 | Domaille Engineering, LLC | BMO Harris Bank N.A., as Agent | Patent Security Agreement |
| Feb 1, 2019 Reel 48223, frame 210 | Orix Corporate Capital Inc. | Domaille Engineering, LLC; Tech Manufacturing, LLC | Release of Security Interest |
| Feb 1, 2019 Reel 48223, frame 323 | Byline Bank, As Agent | Domaille Engineering, LLC; Tech Manufacturing, LLC | Release of Security Interest |
| Feb 4, 2019 Reel 48247, frame 778 | Domaille Engineering, LLC | BMO Harris Bank N.A., as Agent | Patent Security Agreement |
| Nov 30, 2021 reel/frame not recorded | BMO Harris Bank N.A., as Agent | Domaille Engineering, LLC | Release of Security Interest |
| Nov 30, 2021 reel/frame not recorded | BMO Harris Bank N.A., as Agent | Tech Manufacturing, LLC | Release of Security Interest |
| Nov 30, 2021 Reel 58247, frame 482 | BMO Harris Bank N.A., as Agent | Domaille Engineering, LLC; Tech Manufacturing, LLC | Release of Security Interest |
| Dec 1, 2021 Reel 58293, frame 252 | Domaille Engineering, LLC; Tech Manufacturing, LLC; Addman Engineering, LLC | Ally Bank, As Collateral Agent | Security Agreement |
| Sep 23, 2025 Reel 72342, frame 612 | Domaille Engineering, LLC | Stellus Capital Investment Corporation, as Administrative Agent | Security Interest |
| Sep 24, 2025 Reel 72355, frame 130 | Ally Bank, As Collateral Agent | Domaille Engineering, LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Mar 2028
Term ends Mar 21, 2028. No further fees fall due before then
Citations
57
later US patents cite this one
That is top 25% of utility patents granted in 2010 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.