Lapsed May 10, 2026 on the fee record · Medium confidence
20-year base term ends Mar 15, 2033
Why Medium: A parent in the chain could not be resolved.
First maintenance fee unpaid; grace period ended.
Filed Dec 27, 2019 as application 16/728,213 · Granted May 10, 2022
Base term, 20 years from filing, plus 103 days of patent term adjustment (USPTO delay)
Today
Lapsed May 10, 2026
2013
2033
Clock starts
Mar 15, 2013
Mar 15, 2013
No longer in force
May 10, 2026
May 10, 2026
Granted
May 10, 2022
May 10, 2022
Term would have run to
Jun 26, 2033
Jun 26, 2033
base term
patent term adjustment
after the term ends
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
103
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
10
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jun 26, 2033: its 20-year base term plus 103 days of term adjustment for prosecution delay. Confidence: Medium. 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 Mar 15, 2013, when application 13/832,884, the earliest non-provisional in its chain, was filed (this one was filed Dec 27, 2019); a parent in its chain could not be resolved (the next row) | Mar 15, 2033 | 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 | +103 days, USPTO patent term adjustment record | Jun 26, 2033 | 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 2 maintenance fees paid | lapsed May 10, 2026 | High confidence |
| Computed term end | The steps above, in order | May 10, 2026 | Medium confidence |
This family
| US 8,998,166 | In force Jan 2033 | Jan 2033 |
| US 9,212,758 | In force Dec 2033 | Dec 2033 |
| US 8,991,420 | Lapsed on the fee record Mar 2023 | Mar 2023 |
| US 9,568,117 | In force Nov 2032 | Nov 2032 |
| US 10,132,422 | In force Mar 2033 | Mar 2033 |
| US 10,774,945 | In force Mar 2033 | Mar 2033 |
| US 11,015,733 | In force Apr 2033 | Apr 2033 |
| US 11,326,712 | this patent May 2026 | May 2026 |
8 of 10 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Mar 18, 2022 Reel 59301, frame 652 | Choate, Jeremy Ryan; Adams, Keith M.; Cheatham, Lloyd; Law, Robert K | Baker Hughes Oilfield Operations LLC | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 103 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below 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.