Term ends Aug 15, 2037 · High confidence
20-year base term ends Aug 15, 2037
Held by Accuscan Sciences Inc.
Filed Oct 26, 2018 as application 16/172,310 · Granted Jul 28, 2020
Base term, 20 years from filing
Today
2017
2037
Clock starts
Aug 15, 2017
Aug 15, 2017
Term ends
Aug 15, 2037
Aug 15, 2037
Granted
Jul 28, 2020
Jul 28, 2020
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,155,980, to Aug 15, 2037. The term already ends on or before that date, so the cap shortened nothing.
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.
5
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 3 maintenance fees is paid so far. Confidence: High. 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 15, 2017, when application PCT/US2017/047029, the earliest non-provisional in its chain, was filed (this one was filed Oct 26, 2018) | Aug 15, 2037 | 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 resolved from the filed document (refs US 10,155,980) | resolves to Aug 15, 2037, no earlier than this term, so no change | 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 | Aug 15, 2037 | High confidence |
This family
| Application PCT/US2017/047029 | PCT application no patent term | no patent term |
| US 10,155,980 | In force Aug 2037 | Aug 2037 |
| US 10,724,088 | this patent Aug 2037 | Aug 2037 |
| US 11,643,683 | In force Aug 2037 | Aug 2037 |
| Application 18/191,792 | 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 |
|---|---|---|---|
| Oct 29, 2018 Reel 47348, frame 670 | Weng, Li; Sun, Zhaohui; Lin, Shengrong | Accuragen Holdings Limited | Assignment of Assignor's Interest |
| Dec 23, 2025 Reel 74035, frame 680 | Accuragen Holdings Limited | Accuscan Sciences 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
Aug 2037
Term ends Aug 15, 2037. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,155,980, ends no earlier than this term, so it caps nothing.
Citations
12
later US patents cite this one
That is top 25% of utility patents granted in 2020 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.