Term ends no later than May 19, 2034 · Low confidence
20-year base term ends May 19, 2034
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 Carbon Engineering ULC
Filed Jul 1, 2024 as application 18/760,935 · Granted Mar 24, 2026
Base term, 20 years from filing
Today
2014
2034
Clock starts
May 19, 2014
May 19, 2014
Ends no later than
May 19, 2034
May 19, 2034
Granted
Mar 24, 2026
Mar 24, 2026
base term
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
7
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 0 of 2 maintenance fees are paid so far. Confidence: Low. 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 May 19, 2014, when application 14/281,430, the earliest non-provisional in its chain, was filed (this one was filed Jul 1, 2024); a parent in its chain could not be resolved (the next row) | May 19, 2034 | 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 | None on file | no change | 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 | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than May 19, 2034 | Low confidence |
This family
| US 9,637,393 | In force Sep 2034 | Sep 2034 |
| US 10,519,041 | In force May 2034 | May 2034 |
| US 11,014,823 | In force May 2034 | May 2034 |
| US 11,667,538 | In force May 2034 | May 2034 |
| US 12,054,399 | In force May 2034 | May 2034 |
| US 12,583,756 | this patent no later than May 2034 | no later than May 2034 |
| Application 19/555,576 | Pending not computed | not computed |
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 18, 2024 Reel 68623, frame 786 | Vollendorf, Nicholas; Fessler, Eric | Procorp Enterprises LLC | Assignment of Assignor's Interest |
| Sep 18, 2024 Reel 68624, frame 132 | Carbon Engineering Limited Partnership | Carbon Engineering Ltd. | Assignment of Assignor's Interest |
| Sep 18, 2024 Reel 68624, frame 312 | Carbon Engineering Ltd. | Carbon Engineering ULC | Change of Name |
| Sep 18, 2024 Reel 68983, frame 279 | Heidel, Kenton Robert; Keith, David William; Ritchie, Jane Anne | Carbon Engineering Limited Partnership | Assignment of Assignor's Interest |
| Sep 18, 2024 Reel 68986, frame 53 | Procorp Enterprises LLC | Carbon Engineering Limited Partnership | 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
May 2034
Term ends no later than May 19, 2034. Maintenance fees still 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
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 19, 2034. We will not guess the cap.
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.