Term ends Dec 7, 2036 · Low confidence
20-year base term ends Aug 25, 2036
Held by Enverus, Inc.
Filed Aug 7, 2019 as application 16/534,436 · Granted Mar 1, 2022
Base term plus 104 days of patent term adjustment (USPTO delay)
Today
2016
2036
Clock starts
Aug 25, 2016
Aug 25, 2016
Term ends
Dec 7, 2036
Dec 7, 2036
Granted
Mar 1, 2022
Mar 1, 2022
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
104
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,303,819, to Dec 7, 2036. The term already ends on or before that date, so the cap shortened nothing.
1 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.
4
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 104 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 3 maintenance fees is 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 Aug 25, 2016, when application 15/247,097, the earliest non-provisional in its chain, was filed (this one was filed Aug 7, 2019); a parent in its chain could not be resolved (the next row) | Aug 25, 2036 | 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 | +104 days, USPTO patent term adjustment record | Dec 7, 2036 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,303,819) | resolves to Dec 7, 2036, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 16418019, 15247097 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Dec 7, 2036 | Low confidence |
This family
| US 10,303,819 | In force Jan 2037 | Jan 2037 |
| US 11,379,631 | In force Jan 2037 | Jan 2037 |
| US 11,263,370 | this patent Dec 2036 | Dec 2036 |
| US 11,928,405 | In force Oct 2036 | Oct 2036 |
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 |
|---|---|---|---|
| Aug 7, 2019 Reel 49991, frame 625 | Bashore, William M.; Oskins, Jonathan; Leonard, Chad; Oskins, Paul | Drilling Info, Inc. | Assignment of Assignor's Interest |
| Oct 28, 2021 Reel 57968, frame 816 | Drilling Info, Inc. | Enverus, Inc. | Change of Name |
| Dec 22, 2023 Reel 65943, frame 954 | Enverus, Inc. | Golub Capital Markets LLC, as Collateral Agent | Security Interest |
| Dec 18, 2025 Reel 73262, frame 41 | Enverus, Inc. | Golub Capital Markets LLC, as Collateral Agent | Security Interest |
| Dec 29, 2025 Reel 74103, frame 381 | Golub Capital Markets LLC | Enverus, Inc. | Release of Security Interest in Patents (Reel/Frame 065943/0954) |
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
Dec 2036
Term ends Dec 7, 2036. Maintenance fees still fall due before then
Note
The 104 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,303,819, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
That is above the median of utility patents granted in 2022 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.