Also listed on Pipelines 2 Data (P2D) Limited, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jun 28, 2043 · High confidence
20-year base term ends Jun 28, 2043
Held by CASE360 Limited
Filed Jun 28, 2023 as application 18/215,229 · Granted Apr 22, 2025
Base term, 20 years from filing
Today
2023
2043
Clock starts
Jun 28, 2023
Jun 28, 2023
Term ends
Jun 28, 2043
Jun 28, 2043
Granted
Apr 22, 2025
Apr 22, 2025
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.
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.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 0 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 Jun 28, 2023, when this application, 18/215,229, was filed | Jun 28, 2043 | 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 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Jun 28, 2043 | High confidence |
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 13, 2023 reel/frame not recorded | Mayo, Stephen John; Walsh, Mark; Steel, Geoff | ConocoPhillips Company | Assignment of Assignor's Interest |
| Jul 13, 2023 reel/frame not recorded | Mayo, Stephen John; Walsh, Mark; Steel, Geoff | Pipelines 2 Data (P2D) Limited | Assignment of Assignor's Interest |
| Jul 13, 2023 Reel 64235, frame 819 | Steel, Geoff; Walsh, Mark; Mayo, Stephen John | ConocoPhillips Company; Pipelines 2 Data (P2D) Limited | Assignment of Assignor's Interest |
| Apr 14, 2026 Reel 74362, frame 808 | Pipelines 2 Data (P2D) Limited | CASE360 Limited | 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.
What's changing
Jun 2043
Term ends Jun 28, 2043. Maintenance fees still fall due before then
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.