Collateral for a security interest recorded Dec 12, 2024 (Wilmington Trust, National Association).
Lapsed Oct 23, 2026 on the fee record · Low confidence
20-year base term ends Apr 21, 2034
Second maintenance fee unpaid; grace period ended. The USPTO has not yet posted the lapse.
Held by Dropbox, Inc.
Filed Apr 21, 2014 as application 14/257,708 · Granted Oct 23, 2018
Base term, 20 years from filing, plus 141 days of patent term adjustment (USPTO delay)
Today
Lapsed Oct 23, 2026
2014
2034
Clock starts
Apr 21, 2014
Apr 21, 2014
No longer in force
Oct 23, 2026
Oct 23, 2026
Granted
Oct 23, 2018
Oct 23, 2018
Term would have run to
Sep 9, 2034
Sep 9, 2034
base term
patent term adjustment
after the term ends
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
141
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.
Its term would have run to Sep 9, 2034: its 20-year base term plus 141 days of term adjustment for prosecution delay. Confidence: Low. 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 Apr 21, 2014, when this application, 14/257,708, was filed | Apr 21, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +141 days, USPTO patent term adjustment record | Sep 9, 2034 | 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 | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case" | lapsed Oct 23, 2026 | Low confidence |
| Computed term end | The steps above, in order | Oct 23, 2026 | Low confidence |
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 26, 2014 Reel 33192, frame 26 | Vincent, Jonathan | Dropbox, Inc. | Assignment of Assignor's Interest |
| Apr 14, 2017 Reel 42254, frame 1 | Dropbox, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Mar 10, 2021 Reel 55670, frame 219 | Dropbox, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Patent Security Agreement |
| Dec 12, 2024 Reel 69604, frame 611 | Dropbox, Inc. | Wilmington Trust, National Association, as Collateral Agent | Security Interest |
| Dec 12, 2024 Reel 69613, frame 744 | JPMorgan Chase Bank, N.A., as Collateral Agent | Dropbox, Inc. | Release of Security Interest |
| Dec 13, 2024 Reel 69635, frame 332 | JPMorgan Chase Bank, N.A., as Collateral Agent | Dropbox, Inc. | Release of Security Interest |
| Jun 5, 2026 Reel 76607, frame 1 | Dropbox, Inc. | Jpmorgan Chase Bank, N.a. | 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
Note
The 141 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
69
later US patents cite this one
That is top 5% 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.