Term ends Dec 11, 2034 · High confidence
20-year base term ends Dec 11, 2034
Held by Accuscan Sciences Inc.
Filed Jul 31, 2020 as application 16/945,553 · Granted Mar 7, 2023
Base term, 20 years from filing
Today
2014
2034
Clock starts
Dec 11, 2014
Dec 11, 2014
Term ends
Dec 11, 2034
Dec 11, 2034
Granted
Mar 7, 2023
Mar 7, 2023
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 11,286,519, US 11,578,359, US 11,859,246, to Dec 11, 2034. The term already ends on or before that date, so the cap shortened nothing.
1 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 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 2 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 Dec 11, 2014, when application PCT/US2014/069848, the earliest non-provisional in its chain, was filed (this one was filed Jul 31, 2020) | Dec 11, 2034 | 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 11,286,519, US 11,578,359, US 11,859,246) | resolves to Dec 11, 2034, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 11, 2034 | High confidence |
This family
| Application PCT/US2014/069848 | PCT application no patent term | no patent term |
| US 10,767,222 | In force Feb 2036 | Feb 2036 |
| Application PCT/US2016/056126 | PCT application no patent term | no patent term |
| US 10,752,942 | In force Oct 2036 | Oct 2036 |
| US 11,286,519 | In force Dec 2034 | Dec 2034 |
| US 11,859,246 | In force Dec 2034 | Dec 2034 |
| US 11,578,359 | In force Mar 2037 | Mar 2037 |
| US 11,597,973 | this patent Dec 2034 | Dec 2034 |
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 |
|---|---|---|---|
| Sep 21, 2020 Reel 53835, frame 426 | Accuragen, Inc. | Accuragen Holdings Limited | Assignment of Assignor's Interest |
| Sep 21, 2020 Reel 53835, frame 443 | Tang, Paul Ling-fung | Accuragen, Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Dec 2034
Term ends Dec 11, 2034. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,286,519, US 11,578,359, US 11,859,246, ends no earlier than this term, so it caps nothing.
Citations
5
later US patents cite this one
That is top 25% 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.