Term ends Mar 5, 2035 · Medium confidence
20-year base term ends Nov 5, 2033
Why Medium: A parent in the chain could not be resolved.
Held by Emmecell, Inc.
Filed Jun 24, 2019 as application 16/450,090 · Granted Aug 29, 2023
Base term plus 485 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Nov 5, 2013
Nov 5, 2013
Term ends
Mar 5, 2035
Mar 5, 2035
Granted
Aug 29, 2023
Aug 29, 2023
base term
patent term adjustment
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
485
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,327,945, to Mar 5, 2035. The term already ends on or before that date, so the cap shortened nothing.
0 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.
3
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 485 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 2 maintenance fees are paid so far. Confidence: Medium. 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 Nov 5, 2013, when application PCT/US2013/068397, the earliest non-provisional in its chain, was filed (this one was filed Jun 24, 2019); a parent in its chain could not be resolved (the next row) | Nov 5, 2033 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +485 days, USPTO patent term adjustment record | Mar 5, 2035 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,327,945) | resolves to Mar 5, 2035, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 5, 2035 | Medium confidence |
This family
| US 10,327,945 | In force Nov 2035 | Nov 2035 |
| US 11,737,916 | this patent Mar 2035 | Mar 2035 |
2 of 3 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 |
|---|---|---|---|
| Feb 10, 2020 Reel 51771, frame 41 | Goldberg, Jeffrey L.; Goldberg, Roger A.; Kunzevitzky, Noelia J.; Rak, Dillon Joseph | Emmetrope Ophthalmics LLC | Assignment of Assignor's Interest |
| Jul 21, 2026 Reel 75344, frame 226 | Emmetrope Ophthalmics LLC | Emmecell, 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
Mar 2035
Term ends Mar 5, 2035. Maintenance fees still fall due before then
Note
The 485 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,327,945, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median 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.