Term ends Jan 12, 2030 · High confidence
20-year base term ends Jan 12, 2030
Held by Eyepoint, Inc.
Filed Sep 24, 2015 as application 14/864,462 · Granted Apr 24, 2018
Base term, 20 years from filing
Today
2010
2030
Clock starts
Jan 12, 2010
Jan 12, 2010
Term ends
Jan 12, 2030
Jan 12, 2030
Granted
Apr 24, 2018
Apr 24, 2018
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 8,569,348, US 8,883,832, US 9,174,950, to Jan 12, 2030. The term already ends on or before that date, so the cap shortened nothing.
2 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.
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. 2 of 2 maintenance fees are 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 Jan 12, 2010, when application PCT/US2010/020822, the earliest non-provisional in its chain, was filed (this one was filed Sep 24, 2015) | Jan 12, 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 8,569,348, US 8,883,832, US 9,174,950) | resolves to Jan 12, 2030, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 12, 2030 | High confidence |
This family
| US 8,569,348 | In force Jan 2030 | Jan 2030 |
| US 8,883,832 | In force Jan 2030 | Jan 2030 |
| US 9,174,950 | In force Jan 2030 | Jan 2030 |
| US 9,949,956 | this patent Jan 2030 | Jan 2030 |
4 of 5 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 |
|---|---|---|---|
| Nov 10, 2015 Reel 37000, frame 596 | Shalwitz, Robert; Peters, Kevin | Aerpio Therapeutics, Inc. | Assignment of Assignor's Interest |
| Jul 31, 2019 Reel 49919, frame 768 | Aerpio Therapeutics, Inc. | Aerpio Therapeutics LLC | Change of Name |
| Apr 17, 2020 Reel 52432, frame 789 | Aerpio Therapeutics LLC | Aerpio Pharmaceuticals, Inc. | Assignment of Assignor's Interest |
| Sep 9, 2021 Reel 57448, frame 33 | Aerpio Pharmaceuticals, Inc. | Eyepoint Pharmaceuticals, Inc. | Assignment of Assignor's Interest |
| Jan 26, 2026 Reel 74489, frame 618 | Eyepoint Pharmaceuticals, Inc. | Eyepoint, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Jan 2030
Term ends Jan 12, 2030. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,569,348, US 8,883,832, US 9,174,950, ends no earlier than this term, so it caps nothing.
Citations
43
later US patents cite this one
That is top 10% of utility patents granted in 2018 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.