Also listed on Wombat Security Technologies, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Dec 8, 2025 (U.S. Bank Trust Company, National Association).
Term ends Aug 30, 2033 · High confidence
20-year base term ends Apr 9, 2032
Held by Proofpoint, Inc.
Filed Nov 13, 2017 as application 15/810,302 · Granted Oct 26, 2021
Base term plus 508 days of patent term adjustment (USPTO delay)
Today
2012
2033
Clock starts
Apr 9, 2012
Apr 9, 2012
Term ends
Aug 30, 2033
Aug 30, 2033
Granted
Oct 26, 2021
Oct 26, 2021
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
508
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 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.
12
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 508 days past its 20-year base term on prosecution delay. 1 of 2 maintenance fees is paid so far. 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 Apr 9, 2012, when application 13/442,587, the earliest non-provisional in its chain, was filed (this one was filed Nov 13, 2017) | Apr 9, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +508 days, USPTO patent term adjustment record | Aug 30, 2033 | 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 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 30, 2033 | High confidence |
This family
| US 9,547,998 | In force Jul 2034 | Jul 2034 |
| US 9,280,911 | In force May 2033 | May 2033 |
| US 9,558,677 | In force Apr 2032 | Apr 2032 |
| US 9,373,267 | In force Apr 2032 | Apr 2032 |
| Application 14/620,866 | Abandoned not computed | not computed |
| US 9,824,609 | In force Apr 2032 | Apr 2032 |
| US 9,870,715 | In force no later than Jun 2032 | no later than Jun 2032 |
| US 10,749,887 | In force Feb 2033 | Feb 2033 |
8 of 12 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 13, 2017 Reel 44103, frame 206 | Sadeh-koniecpol, Norman; Wescoe, Kurt; Brubaker, Jason; Hong, Jason | Wombat Security Technologies, Inc. | Assignment of Assignor's Interest |
| Mar 19, 2019 Reel 48632, frame 31 | Wombat Security Technologies, Inc. | Proofpoint, Inc. | Assignment of Assignor's Interest |
| Aug 31, 2021 Reel 57389, frame 615 | Proofpoint, Inc. | Goldman Sachs Bank USA, as Collateral Agent | First Lien Intellectual Property Security Agreement |
| Aug 31, 2021 Reel 57389, frame 642 | Proofpoint, Inc. | Goldman Sachs Bank USA, as Collateral Agent | Second Lien Intellectual Property Security Agreement |
| Mar 21, 2024 Reel 66865, frame 648 | Goldman Sachs Bank USA, as Agent | Proofpoint, Inc. | Release of Second Lien Security Interest in Intellectual Property |
| Dec 8, 2025 Reel 73889, frame 677 | Proofpoint, Inc. | U.S. Bank Trust Company, National Association, as Collateral Agent | Second Lien Intellectual Property Security Agreement |
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.
What's changing
Aug 2033
Term ends Aug 30, 2033. Maintenance fees still fall due before then
Note
The 508 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
15
later US patents cite this one
That is top 10% of utility patents granted in 2021 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.