Collateral for a security interest recorded Dec 12, 2024 (Wilmington Trust, National Association).
Term ended no later than Nov 8, 2025 · Low confidence
20-year base term ended Nov 8, 2025
Held by Dropbox, Inc.
Filed Feb 1, 2013 as application 13/757,024 · Granted Dec 3, 2013
Base term, 20 years from filing
Today
Ended no later than Nov 8, 2025
2005
2026
Clock starts
Nov 8, 2005
Nov 8, 2005
Ended no later than
Nov 8, 2025
Nov 8, 2025
Granted
Dec 3, 2013
Dec 3, 2013
base term
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
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
17
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 on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees were paid, so no fee lapse ended it. 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 Nov 8, 2005, when application 11/269,498, the earliest non-provisional in its chain, was filed (this one was filed Feb 1, 2013); a parent in its chain could not be resolved (the next row) | Nov 8, 2025 | 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 | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | no later than Nov 8, 2025 | Low confidence |
This family
| Application 11/269,498 | Abandoned not computed | not computed |
| US 7,885,925 | In force Jan 2027 | Jan 2027 |
| US 8,370,298 | Term ended Nov 2025 | Nov 2025 |
| US 8,600,934 | this patent no later than Nov 2025 | no later than Nov 2025 |
| US 9,037,540 | Term ended Nov 2025 | Nov 2025 |
| US 10,158,708 | Term ended Nov 2025 | Nov 2025 |
| US 11,334,555 | In force May 2028 | May 2028 |
| US 11,341,114 | In force Feb 2028 | Feb 2028 |
8 of 17 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 8, 2013 Reel 31570, frame 434 | Venture Lending & Leasing IV, Inc. and Venture Lending & Leasing V, Inc. | Sugarsync, Inc. | Release of Security Interest |
| Nov 19, 2013 Reel 31674, frame 1 | Sugarsync, Inc. | Fifth Street Finance Corp. | Security Agreement |
| Oct 17, 2014 Reel 33969, frame 891 | Fifth Street Finance Corp. | Sugarsync, Inc. | Release of Security Interest |
| Nov 11, 2014 Reel 34144, frame 861 | Sugarsync, Inc. | 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 |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 8, 2025. We will not guess the cap.
Citations
63
later US patents cite this one
That is top 10% of utility patents granted in 2013 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.