Term ends no later than Jan 6, 2040 · Low confidence
20-year base term ends Jan 6, 2040
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.
Jan 6, 2020
Jan 6, 2040
Oct 15, 2024
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: Low. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jan 6, 2020, when application PCT/JP2020/000010, the earliest non-provisional in its chain, was filed (this one was filed Aug 10, 2023); a parent in its chain could not be resolved (the next row) | Jan 6, 2040 | 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 | 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 Jan 6, 2040 | Low confidence |
This family
| US 11,762,144 | In force Jun 2040 | Jun 2040 |
| US 12,117,645 | this patent no later than Jan 2040 | no later than Jan 2040 |
| Application 18/822,957 | Pending not computed | not computed |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Dec 12, 2023 Reel 65842, frame 217 | Matsui, Takashi; Nakajima, Kazuhide | Nippon Telegraph and Telephone Corporation | Assignment of Assignor's Interest |
| Jul 15, 2026 Reel 75983, frame 139 | Nippon Telegraph and Telephone Corporation | NTT, Inc. | Change of Name |
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 Jan 6, 2040. We will not guess the cap.