Term ends no later than May 23, 2043 · Medium confidence
20-year base term ends May 23, 2043
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
May 23, 2023
May 23, 2043
Oct 6, 2026
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 0 of 3 maintenance fees are paid so far. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 23, 2023, when application PCT/US2023/023173, the earliest non-provisional in its chain, was filed (this one was filed Sep 29, 2025) | May 23, 2043 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than May 23, 2043 | Medium confidence |
This family
| Application PCT/US2023/023173 | PCT application no patent term | no patent term |
| Application 18/869,200 | Pending not computed | not computed |
| Application 19/035,666 | Pending not computed | not computed |
| US 12,752,023 | this patent no later than May 2043 | no later than May 2043 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Sep 29, 2025 Reel 72409, frame 105 | Small, Lyle D.; Wang, Ruizheng | Lahjavida, 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.
What's changing
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 23, 2043. We will not guess the cap.