Lapsed Feb 25, 2024 on the fee record · High confidence
20-year base term ends Apr 18, 2033
First maintenance fee unpaid; grace period ended.
Held by Dentca, Inc.
Filed Oct 11, 2017 as application 15/730,673 · Granted Feb 25, 2020
Base term, 20 years from filing
Today
Lapsed Feb 25, 2024
2013
2033
Clock starts
Apr 18, 2013
Apr 18, 2013
No longer in force
Feb 25, 2024
Feb 25, 2024
Granted
Feb 25, 2020
Feb 25, 2020
Term would have run to
Apr 18, 2033
Apr 18, 2033
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,456,963, to Apr 18, 2033. 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.
4
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 Apr 18, 2033: its 20-year base term, with no 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 Apr 18, 2013, when application 13/865,907, the earliest non-provisional in its chain, was filed (this one was filed Oct 11, 2017) | Apr 18, 2033 | 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 | Disclaimer resolved from the filed document (refs US 9,456,963) | resolves to Apr 18, 2033, 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 Feb 25, 2024 | High confidence |
| Computed term end | The steps above, in order | Feb 25, 2024 | High confidence |
This family
| US 9,456,963 | Lapsed on the fee record Oct 2024 | Oct 2024 |
| US 10,357,435 | In force Jul 2034 | Jul 2034 |
| Application 15/212,137 | Abandoned not computed | not computed |
| US 10,568,814 | this patent Feb 2024 | Feb 2024 |
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 |
|---|---|---|---|
| Oct 12, 2017 Reel 43849, frame 661 | Lee, Jae Sik | Dentca, 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,456,963, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites this one
That is below the median 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.