Lapsed May 1, 2026 on the fee record · High confidence
20-year base term ends Nov 21, 2036
Second maintenance fee unpaid; grace period ended.
Held by Inhearing Technology Inc.
Filed Nov 21, 2016 as application 15/357,090 · Granted May 1, 2018
Base term, 20 years from filing
Today
Lapsed May 1, 2026
2016
2036
Clock starts
Nov 21, 2016
Nov 21, 2016
No longer in force
May 1, 2026
May 1, 2026
Granted
May 1, 2018
May 1, 2018
Term would have run to
Nov 21, 2036
Nov 21, 2036
base term
after the term ends
fee events
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.
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.
20
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 Nov 21, 2036: its 20-year base term, with no adjustment for prosecution delay. 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 Nov 21, 2016, when this application, 15/357,090, was filed | Nov 21, 2036 | 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 | lapsed May 1, 2026 | High confidence |
| Computed term end | The steps above, in order | May 1, 2026 | High confidence |
This family
| US 8,358,797 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 8,355,517 | In force Jun 2031 | Jun 2031 |
| US 8,767,987 | In force Jun 2031 | Jun 2031 |
| US 8,605,927 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| US D671,218 | In force Nov 2026 | Nov 2026 |
| US 9,571,939 | In force Feb 2031 | Feb 2031 |
| US 9,832,578 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 9,961,458 | this patent May 2026 | May 2026 |
8 of 20 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 |
|---|---|---|---|
| Nov 21, 2016 Reel 40391, frame 444 | Tourdot, William E. | Intricon Corporation | Assignment of Assignor's Interest |
| May 24, 2022 Reel 59998, frame 592 | Intricon Corporation; Intricon, Inc. | Capital One, National Association, as Administrative Agent | Security Interest |
| Sep 12, 2024 Reel 68573, frame 674 | Capital One, National Association (as Administrative Agent) | Intricon Corporation | Release of Security Interest |
| Oct 10, 2024 Reel 68865, frame 560 | Intricon Corporation; Intricon Inc. | Inhearing Technology Inc. | 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.
Citations
5
later US patents cite this one
That is above the median of utility patents granted in 2018 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.