Term ends Mar 16, 2030 · High confidence
20-year base term ends Mar 16, 2030
Held by Pangu Biopharma Limited
Filed Apr 7, 2020 as application 16/842,195 · Granted Aug 3, 2021
Base term, 20 years from filing
Today
2010
2030
Clock starts
Mar 16, 2010
Mar 16, 2010
Term ends
Mar 16, 2030
Mar 16, 2030
Granted
Aug 3, 2021
Aug 3, 2021
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 10,526,419, US 10,941,214, US 8,404,242, US 8,753,638, to Mar 16, 2030. 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.
9
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 Mar 16, 2010, when application 12/725,272, the earliest non-provisional in its chain, was filed (this one was filed Apr 7, 2020) | Mar 16, 2030 | 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 10,526,419, US 10,941,214, US 8,404,242, US 8,753,638) | resolves to Mar 16, 2030, 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 | Mar 16, 2030 | High confidence |
This family
| US 8,404,242 | In force Feb 2031 | Feb 2031 |
| US 8,753,638 | In force Mar 2030 | Mar 2030 |
| US 9,605,265 | In force Mar 2030 | Mar 2030 |
| US 10,017,582 | In force Mar 2030 | Mar 2030 |
| US 10,526,419 | In force Mar 2030 | Mar 2030 |
| US 10,941,214 | In force Mar 2030 | Mar 2030 |
| US 11,078,299 | this patent Mar 2030 | Mar 2030 |
| US 12,497,466 | In force May 2033 | May 2033 |
8 of 9 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 |
|---|---|---|---|
| Jun 17, 2021 Reel 56572, frame 687 | Zhou, Jie; Lau, Ching Fun; Xu, Zhiwen; Lo, Wing Sze; Piehl, Kristi Helen; Greene, Leslie Ann | Atyr Pharma, Inc. | Assignment of Assignor's Interest |
| Jun 17, 2021 Reel 56572, frame 710 | Zhou, Jie; Lau, Ching Fun; Xu, Zhiwen; Lo, Wing-sze | Pangu Biopharma Limited | Assignment of Assignor's Interest |
| Jun 17, 2021 Reel 56574, frame 520 | Pangu Biopharma Limited | Atyr Pharma, Inc. | Assignment of Assignor's Interest |
| Jun 17, 2021 Reel 56615, frame 387 | Atyr Pharma, Inc. | Pangu Biopharma Limited | 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
Mar 2030
Term ends Mar 16, 2030. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,526,419, US 10,941,214, US 8,404,242, US 8,753,638, ends no earlier than this term, so it caps nothing.
Citations
8
later US patents cite this one
That is top 25% of utility patents granted in 2021 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.