Collateral for a security interest recorded Dec 16, 2021 (Royal Bank of Canada).
Term ends Apr 20, 2033 · High confidence
20-year base term ends Jul 19, 2031
Held by The Cleaver-Brooks Company, Inc.
Filed Jul 19, 2011 as application 13/185,819 · Granted Feb 20, 2018
Base term plus 1908 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2011
2033
Clock starts
Jul 19, 2011
Jul 19, 2011
Term ends
Apr 20, 2033
Apr 20, 2033
Granted
Feb 20, 2018
Feb 20, 2018
base term
patent term adjustment
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
1,908
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 8,899,326.
2 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.
2
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 1908 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. 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 Jul 19, 2011, when this application, 13/185,819, was filed | Jul 19, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1908 days, USPTO patent term adjustment record | Oct 8, 2036 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,899,326) | capped to Apr 20, 2033 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 20, 2033 | High confidence |
This family
| US 8,899,326 | In force Apr 2033 | Apr 2033 |
| US 9,897,309 | this patent Apr 2033 | Apr 2033 |
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 |
|---|---|---|---|
| Sep 20, 2011 Reel 26935, frame 877 | Vasudevan, Meenatchinathan | Cleaver-Brooks, Inc. | Assignment of Assignor's Interest |
| Dec 26, 2012 Reel 29540, frame 164 | Cleaver-Brooks, Inc. | U.S. Bank National Association, as Collateral Agent; Royal Bank of Canada | Security Agreement |
| Dec 26, 2012 reel/frame not recorded | Cleaver-Brooks, Inc. | U.S. Bank National Association, as Collateral Agent | Security Agreement |
| Dec 26, 2012 reel/frame not recorded | Cleaver-Brooks, Inc. | Royal Bank of Canada | Security Agreement |
| Jul 17, 2014 Reel 33350, frame 617 | Cleaver-Brooks, Inc. | Wilmington Trust National Association | Security Interest |
| Dec 14, 2017 Reel 44393, frame 297 | U.S. Bank National Association, as Collateral Agent | Cleaver-Brooks, Inc. | Release of Security Interest |
| Dec 14, 2017 Reel 44401, frame 702 | Cleaver-Brooks, Inc. | U.S. Bank National Association, as Collateral Agent | Security Interest |
| Dec 15, 2017 Reel 44405, frame 919 | Wilmington Trust National Association | Cleaver-Brooks, Inc. | Release of Security Interest |
| Aug 30, 2021 Reel 57329, frame 669 | Cleaver-Brooks, LLC | The Cleaver-Brooks Company, Inc. | Assignment of Assignor's Interest |
| Aug 30, 2021 Reel 57331, frame 131 | The Cleaver-Brooks Company, Inc. | Royal Bank of Canada | Security Interest |
| Aug 30, 2021 Reel 57331, frame 182 | The Cleaver-Brooks Company, Inc. | U.S. Bank National Association | Security Interest |
| Aug 30, 2021 Reel 57392, frame 177 | Cleaver-Brooks, Inc. | Cleaver-Brooks, LLC | Change of Name |
| Dec 16, 2021 Reel 58533, frame 405 | The Cleaver Brooks Company, Inc. | Royal Bank of Canada | Patent Security Agreement |
| Jul 18, 2022 Reel 60532, frame 952 | The Cleaver- Brooks Company, Inc. | Barings Finance LLC, as Collateral Agent | Security Interest |
| Oct 27, 2022 Reel 61556, frame 326 | Cleaver-Brooks of Canada Limited | Royal Bank of Canada | Release of Security Interest |
| Oct 27, 2022 Reel 61556, frame 369 | The Cleaver-Brooks Company, Inc.; The Cleaver-Brooks Company, Inc. | U.S. Bank Trust Company, National Association, Successor in Interest to U.S. Bank National Association | Release of Security Interest |
| May 15, 2024 Reel 67424, frame 729 | Barings Finance LLC, as Collateral Agent | The Cleaver-Brooks Company, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2033
Term ends Apr 20, 2033. Maintenance fees still fall due before then
Note
The 1908 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 8,899,326.
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2018 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.