Also listed on Sigma Additive Solutions, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Jan 30, 2025 (Rochefort Management LLC).
Term ends Mar 25, 2035 · High confidence
20-year base term ends Mar 25, 2035
Held by Divergent Technologies, Inc.
Filed Jul 9, 2021 as application 17/372,321 · Granted Jul 4, 2023
Base term plus 167 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2015
2035
Clock starts
Mar 25, 2015
Mar 25, 2015
Term ends
Mar 25, 2035
Mar 25, 2035
Granted
Jul 4, 2023
Jul 4, 2023
base term
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
167
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 11,073,431.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 167 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 2 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 Mar 25, 2015, when application PCT/US2015/022539, the earliest non-provisional in its chain, was filed (this one was filed Jul 9, 2021) | Mar 25, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +167 days, USPTO patent term adjustment record | Sep 8, 2035 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,073,431) | capped to Mar 25, 2035 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 25, 2035 | High confidence |
This family
| Application PCT/US2015/022539 | PCT application no patent term | no patent term |
| US 10,317,294 | In force May 2035 | May 2035 |
| US 10,520,372 | In force Mar 2035 | Mar 2035 |
| US 11,073,431 | In force Mar 2035 | Mar 2035 |
| US 11,692,876 | this patent Mar 2035 | Mar 2035 |
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 |
|---|---|---|---|
| Sep 22, 2021 Reel 57566, frame 625 | Dave, Vivek R.; Cola, Mark J.; Madigan, R. Bruce; Piltch, Martin S.; Castro, Alberto | Sigma Labs, Inc. | Assignment of Assignor's Interest |
| May 17, 2023 Reel 63672, frame 417 | Sigma Labs, Inc. | Sigma Additive Solutions, Inc. | Change of Name |
| Jan 24, 2024 Reel 66365, frame 316 | Sigma Labs, Inc. | Divergent Technologies, Inc. | Assignment of Assignor's Interest |
| Feb 27, 2024 Reel 66697, frame 817 | Sigma Additive Solutions, Inc. | Divergent Technologies, Inc. | Corrective Assignment to Correct the the Sigma Labs, Inc. to Divergent Technologies, Inc, Previously Recorded at Reel: 66365 Frame: 316. Assignor(S) Hereby Confirms the Assignment. |
| May 30, 2024 Reel 67569, frame 171 | Divergent Technologies, Inc. | Western Alliance Bank | Security Interest |
| Jan 29, 2025 Reel 70048, frame 543 | Western Alliance Bank | Divergent Technologies, Inc. | Release of Security Interest |
| Jan 30, 2025 Reel 70074, frame 290 | Divergent Technologies, Inc.; CZV, Inc. | Rochefort Management LLC | Security Interest |
| Sep 3, 2025 Reel 73006, frame 590 | Rochefort Management LLC | Acquiom Agency Services LLC | Security 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
Mar 2035
Term ends Mar 25, 2035. Maintenance fees still fall due before then
Note
The 167 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 11,073,431.
Citations
0
later US patents cite this one
That is below the median 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.