Term ends Apr 9, 2041 · High confidence
20-year base term ends Jul 31, 2040
Held by Additive Technologies LLC
Filed Jul 31, 2020 as application 16/945,509 · Granted Aug 22, 2023
Base term plus 252 days of patent term adjustment (USPTO delay)
Today
2020
2041
Clock starts
Jul 31, 2020
Jul 31, 2020
Term ends
Apr 9, 2041
Apr 9, 2041
Granted
Aug 22, 2023
Aug 22, 2023
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
252
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
74
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 252 days past its 20-year base term on prosecution delay. 0 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 Jul 31, 2020, when this application, 16/945,509, was filed | Jul 31, 2040 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +252 days, USPTO patent term adjustment record | Apr 9, 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 9, 2041 | High confidence |
This family
| US 7,715,951 | In force Apr 2028 | Apr 2028 |
| Application 12/001,819 | Abandoned not computed | not computed |
| Application PCT/US2008/010200 | PCT application no patent term | no patent term |
| Application PCT/US2008/010199 | PCT application no patent term | no patent term |
| Application 61/215,725 | Provisional application no patent term | no patent term |
| Application 61/216,712 | Provisional application no patent term | no patent term |
| Application 61/278,669 | Provisional application no patent term | no patent term |
| Application 61/279,072 | Provisional application no patent term | no patent term |
8 of 74 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 |
|---|---|---|---|
| Jul 31, 2020 Reel 53374, frame 477 | Mantell, David A.; Chungbin, Christopher T.; Cormier, Daniel R.; Cormier, Denis; Meda, Manoj; Jayabal, Dinesh Krishna Kumar | Xerox Corporation | Assignment of Assignor's Interest |
| Nov 10, 2022 Reel 62740, frame 214 | Xerox Corporation | Citibank, N.A., as Agent | Security Interest |
| May 18, 2023 Reel 63694, frame 122 | Citibank, N.A., as Agent | Xerox Corporation | Release of Security Interest in Patents at R/F 062740/0214 |
| 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 |
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 2041
Term ends Apr 9, 2041. Maintenance fees still fall due before then
Note
The 252 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is top 25% 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.