Lapsed Oct 4, 2024 on the fee record · High confidence
20-year base term ends Apr 18, 2033
Second maintenance fee unpaid; grace period ended.
Held by Dentca, Inc.
Filed Apr 18, 2013 as application 13/865,907 · Granted Oct 4, 2016
Base term, 20 years from filing, plus 465 days of patent term adjustment (USPTO delay)
Today
Lapsed Oct 4, 2024
2013
2034
Clock starts
Apr 18, 2013
Apr 18, 2013
No longer in force
Oct 4, 2024
Oct 4, 2024
Granted
Oct 4, 2016
Oct 4, 2016
Term would have run to
Jul 27, 2034
Jul 27, 2034
base term
patent term adjustment
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
465
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
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 Jul 27, 2034: its 20-year base term plus 465 days of term 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 Apr 18, 2013, when this application, 13/865,907, was filed | Apr 18, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +465 days, USPTO patent term adjustment record | Jul 27, 2034 | 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 Oct 4, 2024 | High confidence |
| Computed term end | The steps above, in order | Oct 4, 2024 | High confidence |
This family
| US 9,456,963 | this patent 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 | Lapsed on the fee record 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 |
|---|---|---|---|
| Apr 18, 2013 Reel 30247, frame 969 | 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.
What's changing
Note
The 465 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
43
later US patents cite this one
That is top 10% of utility patents granted in 2016 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.