Term ends Nov 30, 2031 · High confidence
20-year base term ends Jul 15, 2031
Held by Hyperion Defi, Inc.
Filed Jul 15, 2011 as application 13/184,468 · Granted May 27, 2014
Base term plus 138 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jul 15, 2011
Jul 15, 2011
Term ends
Nov 30, 2031
Nov 30, 2031
Granted
May 27, 2014
May 27, 2014
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
138
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
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 138 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jul 15, 2011, when this application, 13/184,468, was filed | Jul 15, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +138 days, USPTO patent term adjustment record | Nov 30, 2031 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 30, 2031 | High confidence |
This family
| US 8,733,935 | this patent Nov 2031 | Nov 2031 |
| Application 14/275,187 | Abandoned not computed | not computed |
| Application 15/370,196 | Abandoned not computed | not computed |
| Application 17/239,832 | Abandoned 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 |
|---|---|---|---|
| Dec 14, 2012 Reel 29471, frame 473 | Ballou, Bernard L., JR.; Vollrath, Jurgen Klaus; Sparks, Kelly C.; Brown, Joshua Richard; Packer, Mark; Hunter, Charles Eric; Elliott, Troy; Hebrank, John H. | Corinthian Ophthalmic, Inc. | Assignment of Assignor's Interest |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Acadia Woods Partners, LLC | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Amp Family Partnership III, LP | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Eshelman, Fred N. | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Inachulev, Tsontcho | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Mack, John | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Mario 2002 Grandchildren's Trust | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Middlemarch LLC | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Mark Packer | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Princeton Ophthalmic, LLC | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | RK Ventures Group II, LLC | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Samberg, Arthur J. | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Stern, Thomas | Security Agreement |
| May 13, 2013 reel/frame not recorded | Corinthian Ophthalmic, Inc. | Wille AG | Security Agreement |
| May 13, 2013 Reel 30400, frame 75 | Corinthian Ophthalmic, Inc. | Acadia Woods Partners, LLC; Amp Family Partnership III, LP; Eshelman, Fred N.; Inachulev, Tsontcho; Mack, John; Mario 2002 Grandchildren's Trust; Middlemarch LLC; Mark Packer; Princeton Ophthalmic, LLC; RK Ventures Group II, LLC; Samberg, Arthur J.; Stern, Thomas; Wille AG | Security Agreement |
| Nov 11, 2014 Reel 34146, frame 929 | Acadia Woods Partners, LLC; Amp Family Partnership III, LP; Eshelman, Fred N.; Ianchulev, Tsontcho; Mack, John; Mario 2002 Grandchildren's Trust; Middlemarch LLC; Packer, Mark; Princeton Ophthalmic, LLC; RK Ventures Group II, LLC; Samberg, Arthur J.; Stern, Thomas; Wille AG | Corinthian Ophthalmic, Inc. | Release of Security Interest |
| Nov 12, 2014 Reel 34153, frame 317 | Corinthian Ophthalmic, Inc. | Eyenovia, Inc. | Assignment of Assignor's Interest |
| Nov 30, 2022 Reel 61922, frame 825 | Eyenovia, Inc. | Avenue Capital Management II, L.P. | Security Interest |
| Jan 12, 2026 Reel 74329, frame 438 | Eyenovia, Inc. | Hyperion Defi, Inc. | Change of Name |
| Aug 25, 2026 Reel 75775, frame 227 | Avenue Capital Management II, L.P. | Hyperion Defi, Inc. | Release of Security 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
Nov 2031
Term ends Nov 30, 2031. No further fees fall due before then
Note
The 138 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
135
later US patents cite this one
That is top 5% of utility patents granted in 2014 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.