Term ends Nov 17, 2036 · Medium confidence
20-year base term ends Aug 27, 2035
Why Medium: A parent in the chain could not be resolved.
Held by Blue 425 LLC
Filed Nov 1, 2018 as application 16/178,478 · Granted May 9, 2023
Base term plus 448 days of patent term adjustment (USPTO delay)
Today
2015
2036
Clock starts
Aug 27, 2015
Aug 27, 2015
Term ends
Nov 17, 2036
Nov 17, 2036
Granted
May 9, 2023
May 9, 2023
base term
patent term adjustment
fee events
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
448
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.
32
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 448 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Aug 27, 2015, when the earliest non-provisional application in its chain was filed (this one was filed Nov 1, 2018); a parent in its chain could not be resolved (the next row) | Aug 27, 2035 | 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 | +448 days, USPTO patent term adjustment record | Nov 17, 2036 | 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 | Nov 17, 2036 | Medium confidence |
This family
| Application PCT/US2014/035928 | PCT application no patent term | no patent term |
| US 10,562,132 | In force Apr 2037 | Apr 2037 |
| US 10,940,536 | In force Dec 2035 | Dec 2035 |
| US 10,971,896 | In force Sep 2035 | Sep 2035 |
| US 11,980,970 | In force Apr 2038 | Apr 2038 |
| US 12,220,764 | In force Dec 2039 | Dec 2039 |
| US 10,656,328 | In force Apr 2037 | Apr 2037 |
| US 10,940,562 | In force Oct 2038 | Oct 2038 |
8 of 32 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 |
|---|---|---|---|
| Feb 25, 2023 Reel 62803, frame 188 | Zediker, Mark; Feve, Jean Philippe; Silva S.A., Matthew; Jansen, Michael | Nuburu, Inc. | Assignment of Assignor's Interest |
| Jan 8, 2024 Reel 66222, frame 257 | Nuburu, Inc. | Wilmington Savings Fund Society, FSB; Anson Investments Master Fund LP | Security Interest |
| Jan 8, 2024 reel/frame not recorded | Nuburu, Inc. | Wilmington Savings Fund Society, FSB | Security Interest |
| Jan 8, 2024 reel/frame not recorded | Nuburu, Inc. | Anson Investments Master Fund LP | Security Interest |
| Apr 28, 2025 Reel 71095, frame 702 | Nuburu, Inc. | Blue 425 LLC | Transfer Statement |
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
Nov 2036
Term ends Nov 17, 2036. Maintenance fees still fall due before then
Note
The 448 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
26
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.