Term ends Apr 6, 2030 · High confidence
20-year base term ends Aug 16, 2027
Held by Helio, LLC
Filed Aug 16, 2007 as application 11/893,487 · Granted Jun 28, 2011
Base term plus 964 days of patent term adjustment (USPTO delay)
Today
2007
2030
Clock starts
Aug 16, 2007
Aug 16, 2007
Term ends
Apr 6, 2030
Apr 6, 2030
Granted
Jun 28, 2011
Jun 28, 2011
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
964
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 964 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 Aug 16, 2007, when this application, 11/893,487, was filed | Aug 16, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +964 days, USPTO patent term adjustment record | Apr 6, 2030 | 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 | Apr 6, 2030 | 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 |
|---|---|---|---|
| Aug 16, 2007 Reel 19746, frame 898 | Oh, Seung June; Koh, Eugene; Kim, Hyewon | Helio, LLC | Assignment of Assignor's Interest |
| Jul 30, 2008 Reel 21314, frame 795 | Helio LLC | SK Telecom USA Holdings, Inc. | Security Agreement |
| Aug 22, 2008 Reel 21428, frame 1 | SK Telecom USA Holdings, Inc. | Helio LLC | Release of Security Interest |
| Aug 22, 2008 Reel 21429, frame 824 | Helio LLC | Virgin Entertainment Holdings, Inc.; SK Telecom USA Holdings, Inc. | Security Agreement |
| Aug 22, 2008 Reel 21432, frame 80 | Helio LLC | JPMorgan Chase Bank, N.A. as Collateral Agent | Security Agreement |
| Aug 22, 2008 reel/frame not recorded | Helio LLC | Virgin Entertainment Holdings, Inc. | Security Agreement |
| Aug 22, 2008 reel/frame not recorded | Helio LLC | SK Telecom USA Holdings, Inc. | Security Agreement |
| Oct 23, 2008 Reel 21719, frame 749 | Helio LLC | Virgin Mobile USA, L.P. | Change of Control of Assignee |
| Nov 24, 2009 Reel 23563, frame 943 | JPMorgan Chase Bank, N.A., as Administrative Agent and Collateral Agent | Helio LLC | Release of Security Interest Recorded at Reel 021432, Frame 0080 |
| Nov 24, 2009 Reel 23567, frame 623 | Virgin Entertainment Holdings, Inc.; SK Telecom Co., Ltd. (as Successor to SK Telecom USA Holdings, Inc.) | Helio LLC | Release of Security Interest Recorded at Reel 021429, Frame 0824 |
| Mar 3, 2017 Reel 41880, frame 42 | Virgin Mobile USA, L.P. | Deutsche Bank Trust Company Americas | Grant of First Priority and Junior Priority Security Interest in Patent Rights |
| Apr 2, 2020 Reel 53182, frame 1 | T-Mobile USA, Inc.; Isbv LLC; T-Mobile Central LLC; LAYER3 TV, Inc.; Pushspring, Inc.; Boost Worldwide, LLC; Clearwire Communications LLC; Clearwire IP Holdings LLC; Clearwire Legacy LLC; Sprint Communications Company L.P.; Sprint International Incorporated; Sprint Spectrum L.P.; Assurance Wireless USA, L.P. | Deutsche Bank Trust Company Americas | Security Agreement |
| Apr 3, 2020 Reel 52313, frame 177 | Deutsche Bank Trust Company Americas | Virgin Mobile USA, L.P. | Termination and Release of First Priority and Junior Priority Security Interest in Patent Rights |
| Aug 23, 2022 Reel 62595, frame 1 | Deutsche Bank Trust Company Americas | Ibsv LLC; LAYER3 TV, LLC; Pushspring, LLC; T-Mobile Central LLC; T-Mobile USA, Inc.; Assurance Wireless USA, L.P.; Boost Worldwide, LLC; Clearwire Communications LLC; Clearwire IP Holdings LLC; Sprintcom LLC; Sprint Communications Company L.P.; Sprint International Incorporated; Sprint Spectrum LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Ibsv LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | LAYER3 TV, LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Pushspring, LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | T-Mobile Central LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | T-Mobile USA, Inc. | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Assurance Wireless USA, L.P. | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Boost Worldwide, LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Clearwire Communications LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Clearwire IP Holdings LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Sprintcom LLC | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Sprint Communications Company L.P. | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Sprint International Incorporated | Release of Security Interest |
| Aug 23, 2022 reel/frame not recorded | Deutsche Bank Trust Company Americas | Sprint Spectrum LLC | 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
Apr 2030
Term ends Apr 6, 2030. No further fees fall due before then
Note
The 964 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
26
later US patents cite this one
That is top 25% of utility patents granted in 2011 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.