Term ends Mar 16, 2041 · High confidence
20-year base term ends Apr 10, 2040
Held by Additive Technologies LLC
Filed Apr 10, 2020 as application 16/845,312 · Granted Jan 31, 2023
Base term plus 340 days of patent term adjustment (USPTO delay)
Today
2020
2041
Clock starts
Apr 10, 2020
Apr 10, 2020
Term ends
Mar 16, 2041
Mar 16, 2041
Granted
Jan 31, 2023
Jan 31, 2023
base term
patent term adjustment
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
340
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.
This patent's term runs 340 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 10, 2020, when this application, 16/845,312, was filed | Apr 10, 2040 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +340 days, USPTO patent term adjustment record | Mar 16, 2041 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Mar 16, 2041 | High confidence |
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 16, 2020 Reel 53789, frame 252 | Mantell, David A.; Chungbin, Christopher T.; Liu, Chu-heng; Vader, Scott J.; Vader, Zachary S.; Sukhotskiy, Victor; Cormier, Denis; Tawil, Kareem | Xerox Corporation | Assignment of Assignor's Interest |
| Sep 21, 2020 Reel 53827, frame 573 | Mantell, David A.; Chungbin, Christopher T.; Liu, Chu-heng; Vader, Scott J.; Vader, Zachary S.; Sukhotskiy, Viktor; Cormier, Denis; Tawil, Kareem | Xerox Corporation | Assignment of Assignor's Interest |
| Jun 22, 2023 Reel 64760, frame 389 | Xerox Corporation | Citibank, N.A., as Collateral Agent | Security Interest |
| Dec 1, 2023 Reel 65734, frame 413 | Xerox Corporation | Elem Additive, LLC | Assignment of Assignor's Interest |
| Dec 1, 2023 Reel 65743, frame 267 | Elem Additive, LLC | Additive Technologies LLC | Assignment of Assignor's Interest |
| Feb 13, 2024 Reel 68261, frame 1 | Citibank, N.A., as Collateral Agent | Xerox Corporation | Termination and Release of Security Interest in Patents Recorded at RF 064760/0389 |
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
Mar 2041
Term ends Mar 16, 2041. Maintenance fees still fall due before then
Note
The 340 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
20
later US patents cite this one
That is top 5% of utility patents granted in 2023 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.