Lapsed Jun 28, 2026 on the fee record · High confidence
20-year base term ends Jul 12, 2037
First maintenance fee unpaid; grace period ended.
Held by The Quantum Group, Inc.
Filed Dec 20, 2019 as application 16/724,117 · Granted Jun 28, 2022
Base term, 20 years from filing, plus 32 days of patent term adjustment (USPTO delay)
Today
Lapsed Jun 28, 2026
2017
2037
Clock starts
Jul 12, 2017
Jul 12, 2017
No longer in force
Jun 28, 2026
Jun 28, 2026
Granted
Jun 28, 2022
Jun 28, 2022
Term would have run to
Aug 13, 2037
Aug 13, 2037
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
32
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 10,552,608, to Aug 13, 2037. The term already ends on or before that date, so the cap shortened nothing.
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.
2
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 Aug 13, 2037: its 20-year base term plus 32 days of term 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. 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 Jul 12, 2017, when application 15/648,185, the earliest non-provisional in its chain, was filed (this one was filed Dec 20, 2019) | Jul 12, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +32 days, USPTO patent term adjustment record | Aug 13, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,552,608) | resolves to Aug 13, 2037, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Jun 28, 2026 | High confidence |
| Computed term end | The steps above, in order | Jun 28, 2026 | High confidence |
This family
| US 10,552,608 | In force Jan 2038 | Jan 2038 |
| US 11,372,975 | this patent Jun 2026 | Jun 2026 |
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 23, 2019 Reel 51353, frame 133 | Guillama, Noel J.; Heath, Chester A. | The Quantum Group, Inc. | Assignment of Assignor's Interest |
| Jan 31, 2020 reel/frame not recorded | Guillama, Noel J.; Heath, Chester A. | The Quantum Group, Inc. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded on Reel 051353 Frame 0133. Assignor(S) Hereby Confirms the Assignment. |
| Jan 31, 2020 reel/frame not recorded | Guillama, Noel J.; Heath, Chester A. | Guillama, Noel J. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded on Reel 051353 Frame 0133. Assignor(S) Hereby Confirms the Assignment. |
| Jan 31, 2020 Reel 51763, frame 781 | Guillama, Noel J.; Heath, Chester A. | The Quantum Group, Inc.; Guillama, Noel J. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded on Reel 051353 Frame 0133. Assignor(S) Hereby Confirms the Assignment. |
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
Note
The 32 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 10,552,608, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite 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.