Term ends Apr 16, 2034 · High confidence
20-year base term ends Apr 16, 2034
Held by Enverus, Inc.
Filed Apr 13, 2017 as application 15/487,393 · Granted Dec 1, 2020
Base term, 20 years from filing
Today
2014
2034
Clock starts
Apr 16, 2014
Apr 16, 2014
Term ends
Apr 16, 2034
Apr 16, 2034
Granted
Dec 1, 2020
Dec 1, 2020
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
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.
3
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. 1 of 3 maintenance fees is 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 Apr 16, 2014, when application 14/254,718, the earliest non-provisional in its chain, was filed (this one was filed Apr 13, 2017) | Apr 16, 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 16, 2034 | High confidence |
This family
| US 10,459,098 | In force Sep 2037 | Sep 2037 |
| US 10,853,893 | this patent Apr 2034 | Apr 2034 |
| US 11,704,748 | In force Sep 2034 | Sep 2034 |
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 |
|---|---|---|---|
| Dec 30, 2017 Reel 44509, frame 314 | Grant, Christian W.; Compton, Stefan; Witte, Dean | Drillinginfo, Inc. | Assignment of Assignor's Interest |
| Oct 20, 2023 Reel 65304, frame 21 | 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
Apr 2034
Term ends Apr 16, 2034. Maintenance fees still fall due before then
Citations
25
later US patents cite this one
That is top 10% of utility patents granted in 2020 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.