Term ends Apr 29, 2033 · Medium confidence
20-year base term ends Apr 29, 2033
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,385,392), so the cap could be lower.
Held by 24M Technologies, Inc.
Filed Apr 26, 2021 as application 17/240,470 · Granted Nov 7, 2023
Base term plus 250 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2013
2033
Clock starts
Apr 29, 2013
Apr 29, 2013
Term ends
Apr 29, 2033
Apr 29, 2033
Granted
Nov 7, 2023
Nov 7, 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
250
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 11,018,365, US 8,993,159, US 9,184,464, US 9,385,392.
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.
11
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 250 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: 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 Apr 29, 2013, when application 13/872,613, the earliest non-provisional in its chain, was filed (this one was filed Apr 26, 2021) | Apr 29, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +250 days, USPTO patent term adjustment record | Jan 4, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,018,365, US 8,993,159, US 9,184,464, US 9,385,392) | capped to Apr 29, 2033 | Medium 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 | Apr 29, 2033 | Medium confidence |
This family
| US 8,993,159 | In force Apr 2033 | Apr 2033 |
| Application PCT/US2013/075106 | PCT application no patent term | no patent term |
| US 9,184,464 | In force Apr 2033 | Apr 2033 |
| US 9,362,583 | In force no later than Apr 2033 | no later than Apr 2033 |
| US 9,385,392 | In force no later than Apr 2033 | no later than Apr 2033 |
| US 9,831,518 | In force Apr 2033 | Apr 2033 |
| US 9,831,519 | In force Apr 2033 | Apr 2033 |
| US 10,483,582 | In force Apr 2033 | Apr 2033 |
8 of 11 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 |
|---|---|---|---|
| Aug 26, 2022 Reel 60913, frame 508 | Chiang, Yet-ming; Duduta, Mihai; Holman, Richard; Limthongkul, Pimpa; Tan, Taison | 24M Technologies, Inc. | 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 2033
Term ends Apr 29, 2033. Maintenance fees still fall due before then
Note
The 250 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 11,018,365, US 8,993,159, US 9,184,464, US 9,385,392.
Citations
76
later US patents cite this one
That is top 1% 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.