Term ends May 19, 2034 · High confidence
20-year base term ends May 19, 2034
Held by Carbon Engineering ULC
Filed Apr 21, 2021 as application 17/236,478 · Granted Jun 6, 2023
Base term, 20 years from filing
Today
2014
2034
Clock starts
May 19, 2014
May 19, 2014
Term ends
May 19, 2034
May 19, 2034
Granted
Jun 6, 2023
Jun 6, 2023
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,519,041, US 11,014,823, US 9,637,393, to May 19, 2034. The term already ends on or before that date, so the cap shortened nothing.
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 resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 2 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 May 19, 2014, when application 14/281,430, the earliest non-provisional in its chain, was filed (this one was filed Apr 21, 2021) | May 19, 2034 | 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 | Disclaimer resolved from the filed document (refs US 10,519,041, US 11,014,823, US 9,637,393) | resolves to May 19, 2034, no earlier than this term, so no change | High 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 | May 19, 2034 | High 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 | this patent May 2034 | May 2034 |
| US 12,054,399 | In force May 2034 | May 2034 |
| US 12,583,756 | In force 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 |
|---|---|---|---|
| Jul 19, 2022 Reel 60549, frame 867 | Vollendorf, Nicholas; Fessler, Eric | Procorp Enterprises LLC | Assignment of Assignor's Interest |
| Jul 19, 2022 Reel 60550, frame 61 | Heidel, Kenton Robert; Keith, David William; Ritchie, Jane Anne | Carbon Engineering Limited Partnership | Assignment of Assignor's Interest |
| Jul 19, 2022 Reel 60550, frame 343 | Procorp Enterprises LLC | Carbon Engineering Limited Partnership | Assignment of Assignor's Interest |
| Jul 19, 2022 Reel 60550, frame 511 | Carbon Engineering Limited Partnership | Carbon Engineering Ltd. | Assignment of Assignor's Interest |
| Feb 28, 2024 Reel 66593, frame 551 | Carbon Engineering Ltd. | Carbon Engineering ULC | Change of Name |
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 May 19, 2034. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,519,041, US 11,014,823, US 9,637,393, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is top 25% of utility patents granted in 2023 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.