Term ends Apr 11, 2034 · Low confidence
20-year base term ends Aug 21, 2033
Reissue of US 9,301,117, which was surrendered when this reissue was granted; its term and maintenance fees continue here.
Held by Tritech Software Systems
Filed Jan 27, 2023 as application 18/102,592 · Granted Jun 18, 2024
Base term plus 233 days of patent term adjustment (USPTO delay)
Today
2013
2034
Clock starts
Aug 21, 2013
Aug 21, 2013
Term ends
Apr 11, 2034
Apr 11, 2034
Granted
Jun 18, 2024
Jun 18, 2024
base term
patent term adjustment
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
233
Days of term adjustment
Read from the original patent's USPTO patent term adjustment record, which governs a reissue. Not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from the original patent's grant (Mar 29, 2016). This counts the ones the record shows paid.
4
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 233 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. Confidence: Low. 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 21, 2013, when application 13/972,843, the earliest non-provisional in its chain, was filed (this one was filed Jan 27, 2023) | Aug 21, 2033 | High confidence |
| Continuity chain | A reissue: its term follows the original patent's, with the original's term adjustment | follows the original patent | Medium confidence |
| Patent term adjustment | +233 days, the original patent's USPTO patent term adjustment record, which governs a reissue (35 U.S.C. 251). This reissue's own record carries none | Apr 11, 2034 | Medium confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force (reinstated) | High confidence |
| Computed term end | The steps above, in order | Apr 11, 2034 | Low confidence |
This family
| US 9,301,117 | Surrendered on reissue Jun 2024 | Jun 2024 |
| Application PCT/US2014/051952 | PCT application no patent term | no patent term |
| US RE50,016 | this patent Apr 2034 | Apr 2034 |
| Application 90/016,158 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Jan 27, 2023 Reel 62518, frame 121 | Leggett, David J.; Maloney, Christopher David; Macdonald, Scott Michael; Hamilton, Mark David; Loberg, Erik Christian; Meng, Chen-lu; Martin, Ken D. | Tritech Software Systems | Assignment of Assignor's Interest |
| Dec 2, 2025 Reel 73082, frame 869 | Centralsquare Inc. | Tritech Software Systems | License |
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 2034
Term ends Apr 11, 2034. No further fees fall due before then
Note
The 233 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.