Collateral for a security interest recorded Jul 31, 2013 (Deerfield Private Design Fund II, L.P.).
Term ends Dec 26, 2031 · High confidence
20-year base term ends Nov 21, 2028
Held by Sermo, Inc.
Filed Nov 21, 2008 as application 12/275,543 · Granted Sep 25, 2018
Base term plus 1130 days of patent term adjustment (USPTO delay)
Today
2008
2031
Clock starts
Nov 21, 2008
Nov 21, 2008
Term ends
Dec 26, 2031
Dec 26, 2031
Granted
Sep 25, 2018
Sep 25, 2018
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
1,130
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
This patent's term runs 1130 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Nov 21, 2008, when this application, 12/275,543, was filed | Nov 21, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1130 days, USPTO patent term adjustment record | Dec 26, 2031 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 26, 2031 | High 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 10, 2009 Reel 22807, frame 75 | Palestrant, Daniel | Sermo, Inc. | Assignment of Assignor's Interest |
| Dec 29, 2010 Reel 25571, frame 360 | Sermo, Inc. | MMV Financial Inc. | Security Agreement |
| Jul 31, 2013 Reel 30922, frame 915 | Sermo, Inc. | Deerfield Private Design Fund II, L.P.; Deerfield Private Design International II, L.P. | Security Agreement |
| Jul 31, 2013 reel/frame not recorded | Sermo, Inc. | Deerfield Private Design Fund II, L.P. | Security Agreement |
| Jul 31, 2013 reel/frame not recorded | Sermo, Inc. | Deerfield Private Design International II, L.P. | Security Agreement |
| Jan 10, 2019 Reel 47959, frame 928 | MMV Financial Inc. | Sermo, Inc. | Release of Security Interest |
| Jan 14, 2019 Reel 47987, frame 384 | Deerfield Private Design Fund II, LP; Deerfield Private Design International II, LP | Sermo, Inc. | Release of Security Interest |
| Jul 7, 2020 Reel 53140, frame 425 | Worldone, Inc.; Sermo, Inc. | Silicon Valley Bank | Security Interest |
| Oct 27, 2023 Reel 65369, frame 845 | First-Citizens Bank & Trust Company | Sermo, Inc.; Worldone, Inc. | Release of Security Interest |
| Oct 27, 2023 Reel 65370, frame 170 | Sermo, Inc.; Worldone, Inc. | Pnc Bank, National Association | Security Interest |
| Oct 27, 2023 reel/frame not recorded | First-Citizens Bank & Trust Company | Sermo, Inc. | Release of Security Interest |
| Oct 27, 2023 reel/frame not recorded | First-Citizens Bank & Trust Company | Worldone, Inc. | Release of Security Interest |
| Feb 27, 2026 Reel 73922, frame 893 | Sermo, Inc.; Worldone, Inc. | Capital One, National Association | Security Interest |
| Mar 3, 2026 Reel 75025, frame 873 | Pnc Bank, National Association | Sermo, Inc.; Worldone, Inc. | Termination and Release of Intellectual Property Security Agreement |
| Mar 3, 2026 reel/frame not recorded | Pnc Bank, National Association | Sermo, Inc. | Termination and Release of Intellectual Property Security Agreement |
| Mar 3, 2026 reel/frame not recorded | Pnc Bank, National Association | Worldone, Inc. | Termination and Release of Intellectual Property Security Agreement |
| Mar 5, 2026 Reel 73978, frame 387 | Pnc Bank, National Association | Sermo, Inc.; Worldone, Inc. | Release of Security Interest |
| Mar 5, 2026 reel/frame not recorded | Pnc Bank, National Association | Sermo, Inc. | Release of Security Interest |
| Mar 5, 2026 reel/frame not recorded | Pnc Bank, National Association | Worldone, 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
Dec 2031
Term ends Dec 26, 2031. Maintenance fees still fall due before then
Note
The 1130 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
50
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.