Also listed on Lightsurf Technologies, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded May 16, 2022 (Barclays Bank PLC).
Term ends Nov 25, 2026 · High confidence
20-year base term ended Mar 24, 2024
Held by Syniverse Icx, LLC
Filed Mar 24, 2004 as application 10/808,767 · Granted Apr 7, 2009
Base term plus 976 days of patent term adjustment (USPTO delay)
Today
2004
2026
Clock starts
Mar 24, 2004
Mar 24, 2004
Term ends
Nov 25, 2026
Nov 25, 2026
Granted
Apr 7, 2009
Apr 7, 2009
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
976
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
This patent's term runs 976 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Mar 24, 2004, when this application, 10/808,767, was filed | Mar 24, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +976 days, USPTO patent term adjustment record | Nov 25, 2026 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 25, 2026 | 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 |
|---|---|---|---|
| Mar 24, 2004 Reel 15151, frame 874 | Rodriguez, John Ernest | Lightsurf Technologies, Inc. | Assignment of Assignor's Interest |
| Nov 4, 2009 Reel 23472, frame 603 | Lightsurf Technologies, Inc. | Versign, Inc. | Merger |
| Nov 4, 2009 Reel 23472, frame 660 | Versign, Inc. | Verisign Icx Corporation | Assignment of Assignor's Interest |
| Dec 9, 2009 Reel 23631, frame 719 | Lightsurf Technologies, Inc. | Verisign, Inc. | Corrective Assignment to Correct the Receiving Party Data Previously Recorded on Reel 023472 Frame 0603. Assignor(S) Hereby Confirms the Merger. |
| Dec 9, 2009 Reel 23631, frame 775 | Verisign, Inc. | Verisign Icx Corporation | Corrective Assignment to Correct the Conveying Party Data Previously Recorded on Reel 023472 Frame 0660. Assignor(S) Hereby Confirms the Assignment. |
| Apr 6, 2010 Reel 24185, frame 944 | Verisign Icx Corporation | Syniverse Icx Corporation | Change of Name |
| Apr 11, 2011 Reel 26103, frame 469 | Syniverse Holdings, Inc.; Syniverse Technologies, Inc.; Syniverse Icx Corporation; The Rapid Roaming Company | Barclays Bank PLC | Intellectual Property Security Agreement Supplement |
| Apr 23, 2012 Reel 28088, frame 770 | Barclays Bank PLC | Syniverse Icx Corporation | Release of Security Interest at Reel/Frame 026103/0469 |
| Apr 24, 2012 Reel 28097, frame 869 | Syniverse Icx Corporation | Barclays Bank PLC | Security Agreement |
| Mar 12, 2018 Reel 45176, frame 632 | Syniverse Icx Corporation | Barclays Bank PLC, as Administrative Agent | Security Interest |
| May 11, 2022 Reel 59953, frame 377 | Syniverse Icx Corporation | Syniverse Icx, LLC | Change of Name |
| May 13, 2022 Reel 60064, frame 406 | Barclays Bank PLC, as Collateral Agent | Syniverse Icx, LLC | Termination and Release of Security Interest in Patents |
| May 16, 2022 Reel 60072, frame 562 | Syniverse Icx LLC | Barclays Bank PLC, as Collateral Agent | Notice and Confirmation of Grant of Security Interest in Patents |
| Oct 2, 2026 Reel 76648, frame 577 | Barclays Bank PLC, as Collateral Agent | Wilmington Savings Fund Society, FSB, Acting in Its Capacity as Successor Collateral Agent | Assignment of Security Interest in Intellectual Property (Reel/Frame No. 060072/0562) |
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
Nov 2026
Term ends Nov 25, 2026. No further fees fall due before then
Note
The 976 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2009 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.