Term ends Apr 2, 2035 · High confidence
20-year base term ends Apr 2, 2035
Filed Sep 28, 2016 as application 15/300,273 · Granted Dec 19, 2017
Base term, 20 years from filing
Today
2015
2035
Clock starts
Apr 2, 2015
Apr 2, 2015
Term ends
Apr 2, 2035
Apr 2, 2035
Granted
Dec 19, 2017
Dec 19, 2017
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.
2 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.
5
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. 2 of 3 maintenance fees are 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 2, 2015, when application PCT/KR2015/003328, the earliest non-provisional in its chain, was filed (this one was filed Sep 28, 2016) | Apr 2, 2035 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 2, 2035 | High confidence |
This family
| US 9,848,275 | this patent Apr 2035 | Apr 2035 |
| US 9,986,365 | In force Apr 2035 | Apr 2035 |
| US 10,129,685 | In force Apr 2035 | Apr 2035 |
| US 10,469,978 | In force Apr 2035 | Apr 2035 |
4 of 5 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 |
|---|---|---|---|
| Sep 29, 2016 Reel 39898, frame 461 | Lee, Taegyu; Oh, Hyun Oh | Wilus Institute of Standards and Technology Inc. | Assignment of Assignor's Interest |
| Feb 12, 2018 Reel 44905, frame 601 | Wilus Institute of Standards and Technology Inc. | Binaural Audio Technology Inc. | License |
| Feb 16, 2018 Reel 44955, frame 180 | Wilus Institute of Standards and Technology Inc. | Korea Patent Investment Corp. | Security Interest |
| Jul 13, 2020 Reel 53197, frame 150 | Korea Patent Investment Corp. | Wilus Institute of Standards and Technology Inc. | Termination of Patent Pledge |
| Jul 16, 2020 Reel 53235, frame 462 | Binaural Audio Technology Inc. | Wilus Institute of Standards and Technology Inc. | Termination Agreement of Exclusive License |
| Jun 22, 2021 Reel 56610, frame 624 | Wilus Institute of Standards and Technology Inc. | Wilus Institute of Standards and Technology Inc.; Gcoa Co., Ltd. | Assignment of Assignor's Interest |
| Jun 22, 2021 reel/frame not recorded | Wilus Institute of Standards and Technology Inc. | Wilus Institute of Standards and Technology Inc. | Assignment of Assignor's Interest |
| Jun 22, 2021 reel/frame not recorded | Wilus Institute of Standards and Technology Inc. | Gcoa Co., Ltd. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2035
Term ends Apr 2, 2035. Maintenance fees still fall due before then
Citations
19
later US patents cite this one
That is top 25% of utility patents granted in 2017 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.