Term ends Oct 9, 2029 · Medium confidence
20-year base term ends May 4, 2029
Why Medium: A parent in the chain could not be resolved.
Held by Dentsply Sirona Inc.
Filed Jun 21, 2021 as application 17/353,100 · Granted May 12, 2026
Base term plus 158 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
May 4, 2009
May 4, 2009
Term ends
Oct 9, 2029
Oct 9, 2029
Granted
May 12, 2026
May 12, 2026
base term
patent term adjustment
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
158
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
7
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 runs 158 days past its 20-year base term on prosecution delay. No maintenance fee can end this term early. Confidence: Medium. 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 May 4, 2009, when application 12/387,542, the earliest non-provisional in its chain, was filed (this one was filed Jun 21, 2021); a parent in its chain could not be resolved (the next row) | May 4, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +158 days, USPTO patent term adjustment record | Oct 9, 2029 | 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 | No maintenance fee can end the term early | In force | High confidence |
| Computed term end | The steps above, in order | Oct 9, 2029 | Medium confidence |
This family
| US 8,266,940 | In force Oct 2030 | Oct 2030 |
| Application PCT/US2010/028903 | PCT application no patent term | no patent term |
| US 9,610,628 | In force May 2030 | May 2030 |
| US 10,076,780 | In force Jan 2030 | Jan 2030 |
| US 10,130,987 | In force Aug 2029 | Aug 2029 |
| US 11,072,021 | In force May 2029 | May 2029 |
| US 12,623,272 | this patent Oct 2029 | Oct 2029 |
The applications whose file history this site holds. The family may have others.
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
Oct 2029
Term ends Oct 9, 2029. No further fees fall due before then
Note
The 158 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.