Lapsed Sep 8, 2024 on the fee record · High confidence
20-year base term ends Dec 2, 2035
First maintenance fee unpaid; grace period ended.
Held by Arq Solutions, LLC
Filed Dec 2, 2015 as application 14/957,552 · Granted Sep 8, 2020
Base term, 20 years from filing, plus 615 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 8, 2024
2015
2037
Clock starts
Dec 2, 2015
Dec 2, 2015
No longer in force
Sep 8, 2024
Sep 8, 2024
Granted
Sep 8, 2020
Sep 8, 2020
Term would have run to
Aug 8, 2037
Aug 8, 2037
base term
patent term adjustment
after the term ends
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
615
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
42
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 8, 2037: its 20-year base term plus 615 days of term adjustment for prosecution delay. 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 Dec 2, 2015, when this application, 14/957,552, was filed | Dec 2, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +615 days, USPTO patent term adjustment record | Aug 8, 2037 | 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 | 0 of 3 maintenance fees paid | lapsed Sep 8, 2024 | High confidence |
| Computed term end | The steps above, in order | Sep 8, 2024 | High confidence |
This family
| US 9,539,538 | In force Jan 2035 | Jan 2035 |
| US 9,314,767 | Lapsed on the fee record Apr 2024 | Apr 2024 |
| US 10,722,865 | In force Aug 2032 | Aug 2032 |
| US 10,307,706 | In force Sep 2036 | Sep 2036 |
| US 10,449,492 | In force Jul 2035 | Jul 2035 |
| US 11,285,459 | In force Aug 2035 | Aug 2035 |
| US 10,766,016 | this patent Sep 2024 | Sep 2024 |
| Application 15/093,414 | Abandoned not computed | not computed |
8 of 42 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 |
|---|---|---|---|
| Mar 30, 2016 Reel 38141, frame 219 | Li, Mowen; McMurray, Sarah G.; Huston, Robert B.; Wong, Joseph M. | Ada Carbon Solutions, LLC | Assignment of Assignor's Interest |
| Dec 7, 2018 Reel 47741, frame 411 | Ada Carbon Solutions, LLC | The Bank of New York Mellon, as Administrative Agent | Notice of Grant of Security Interest in Patents |
| Jun 4, 2021 Reel 56483, frame 651 | The Bank of New York Mellon, as Administrative Agent | Ada Carbon Solutions, LLC | Termination and Release of Security Interest in Patents |
| Feb 1, 2023 Reel 62622, frame 51 | Ada Carbon Solutions, LLC; Ada-Es, Inc. | CF Global Credit, LP | Patent Security Agreement |
| Feb 22, 2024 Reel 66694, frame 271 | Ada Carbon Solutions, LLC | Arq Solutions, LLC | Change of Name |
| Dec 27, 2024 Reel 69791, frame 980 | CF Global Credit, LP, as Administrative Agent | Arq Solutions, LLC (F/K/A Ada Carbon Solutions, LLC); Arq Solutions (Es), Inc. (F/K/A Ada-Es, Inc.) | Release of Security Interest |
| Dec 27, 2024 reel/frame not recorded | CF Global Credit, LP, as Administrative Agent | Arq Solutions, LLC (F/K/A Ada Carbon Solutions, LLC) | Release of Security Interest |
| Dec 27, 2024 reel/frame not recorded | CF Global Credit, LP, as Administrative Agent | Arq Solutions (Es), Inc. (F/K/A Ada-Es, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 615 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
later US patents cite this one
That is top 10% 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.