Term ends Nov 24, 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 May 7, 2015 as application 14/706,701 · Granted Jun 25, 2019
Base term plus 749 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Nov 5, 2013
Nov 5, 2013
Term ends
Nov 24, 2035
Nov 24, 2035
Granted
Jun 25, 2019
Jun 25, 2019
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
749
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
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 749 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 May 7, 2015); 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 | +749 days, USPTO patent term adjustment record | Nov 24, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 24, 2035 | Medium confidence |
This family
| US 10,327,945 | this patent Nov 2035 | Nov 2035 |
| US 11,737,916 | In force 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 |
|---|---|---|---|
| Jun 22, 2016 Reel 38979, frame 614 | 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
Nov 2035
Term ends Nov 24, 2035. Maintenance fees still fall due before then
Note
The 749 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is top 25% of utility patents granted in 2019 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.