Collateral for a security interest recorded May 24, 2024 (Oha Agency LLC).
Term ends Sep 3, 2028 · Medium confidence
20-year base term ends Sep 3, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Cleaning Systems, LLC
Filed Apr 2, 2018 as application 15/942,993 · Granted Dec 8, 2020
Base term plus 348 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2008
2028
Clock starts
Sep 3, 2008
Sep 3, 2008
Term ends
Sep 3, 2028
Sep 3, 2028
Granted
Dec 8, 2020
Dec 8, 2020
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
348
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,676,371, US 9,932,018.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
5
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 348 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 1 maintenance fees is paid so far. 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 Sep 3, 2008, when application 12/203,510, the earliest non-provisional in its chain, was filed (this one was filed Apr 2, 2018); a parent in its chain could not be resolved (the next row) | Sep 3, 2028 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +348 days, USPTO patent term adjustment record | Aug 17, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,676,371, US 9,932,018) | capped to Sep 3, 2028 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 3, 2028 | Medium confidence |
This family
| US 9,676,371 | In force Jan 2032 | Jan 2032 |
| US 9,932,018 | In force Sep 2028 | Sep 2028 |
| US 10,857,982 | this patent Sep 2028 | Sep 2028 |
| US 11,685,343 | In force Sep 2028 | Sep 2028 |
4 of 5 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 |
|---|---|---|---|
| Apr 2, 2018 Reel 45410, frame 826 | Krause, David R., MR.; Pansier, Donald J., MR.; Mathys, Daniel J., MR. | Cleaning Systems, Inc. | Assignment of Assignor's Interest |
| Oct 2, 2020 Reel 53963, frame 78 | Cleaning Systems, LLC; Transclean, LLC | Antares Capital LP, as Administrative Agent | Security Interest |
| Nov 5, 2020 Reel 54332, frame 857 | Cleaning Systems, Inc. | Cleaning Systems, LLC | Certificate of Conversion |
| Dec 29, 2020 Reel 54767, frame 843 | Cleaning Systems, LLC | Ares Capital Corporation, As Administrative Agent | Security Interest |
| Jan 8, 2021 reel/frame not recorded | Antares Capital LP, as Administrative Agent | Transclean, LLC | Patent Release and Reassignment of R/F 053963/0078 |
| Jan 8, 2021 reel/frame not recorded | Antares Capital LP, as Administrative Agent | Cleaning Systems, LLC | Patent Release and Reassignment of R/F 053963/0078 |
| Jan 8, 2021 Reel 54927, frame 921 | Antares Capital LP, as Administrative Agent | Transclean, LLC; Cleaning Systems, LLC | Patent Release and Reassignment of R/F 053963/0078 |
| May 24, 2024 Reel 67519, frame 797 | Cleaning Systems, LLC | Oha Agency LLC, as Administrative Agent | Security Interest |
| May 24, 2024 Reel 67528, frame 490 | Ares Capital Corporation, As Agent | Cleaning Systems, LLC | Release of Security Interest in Intellectual Property at R/F 054767/0843 |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Sep 2028
Term ends Sep 3, 2028. No further fees fall due before then
Note
The 348 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,676,371, US 9,932,018.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2020 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.