Also listed on Clear Wireless LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jul 30, 2029 · Medium confidence
20-year base term ends Mar 25, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Clearwire IP Holdings LLC
Filed Aug 4, 2008 as application 12/185,758 · Granted Aug 9, 2011
Base term plus 492 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Mar 25, 2008
Mar 25, 2008
Term ends
Jul 30, 2029
Jul 30, 2029
Granted
Aug 9, 2011
Aug 9, 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
492
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.
3
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 492 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 25, 2008, when application 12/055,169, the earliest non-provisional in its chain, was filed (this one was filed Aug 4, 2008); a parent in its chain could not be resolved (the next row) | Mar 25, 2028 | 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 | +492 days, USPTO patent term adjustment record | Jul 30, 2029 | 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 | Jul 30, 2029 | Medium confidence |
This family
| Application 12/055,169 | Abandoned not computed | not computed |
| US 7,995,529 | this patent Jul 2029 | Jul 2029 |
| Application PCT/US2009/052736 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Aug 25, 2008 Reel 21437, frame 456 | Kauser, Nicolas; Saw, John; Gelbman, Peter | Clearwire Corporation | Assignment of Assignor's Interest |
| Jan 23, 2009 Reel 22150, frame 628 | Clearwire Communications LLC | Morgan Stanley & Co., Inc. | Security Agreement |
| Mar 23, 2009 Reel 22449, frame 723 | Clearwire Corporation | Clearwire Sub LLC | Merger |
| Mar 23, 2009 Reel 22449, frame 730 | Clearwire Sub LLC | Clearwire Legacy LLC | Change of Name |
| Nov 24, 2009 Reel 23567, frame 441 | Morgan Stanley & Co., Inc., as Collateral Agent | Clearwire Communications LLC | Termination and Release of Security Interest in Patent Rights |
| Nov 30, 2009 Reel 23574, frame 539 | Clearwire Legacy LLC; Clear Wireless LLC | Wilmington Trust Fsb, As Collateral Agent | Security Agreement |
| Dec 13, 2010 Reel 25473, frame 569 | Clearwire Legacy LLC; Clear Wireless LLC | Wilmington Trust Fsb, As Collateral Agent | Second Lien Patent Security Agreement |
| Oct 27, 2011 Reel 27132, frame 233 | Clearwire Legacy LLC | Clearwire Communications | Assignment of Assignor's Interest |
| Oct 27, 2011 Reel 27134, frame 855 | Clearwire Communications LLC | Clearwire IP Holdings LLC | Assignment of Assignor's Interest |
| Mar 3, 2017 Reel 41880, frame 228 | Clearwire Legacy LLC | 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 52312, frame 975 | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clearwire Legacy LLC; Clear Wireless LLC | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB |
| Apr 3, 2020 Reel 52313, frame 172 | Deutsche Bank Trust Company Americas | Clearwire Legacy LLC | Termination and Release of First Priority and Junior Priority Security Interest in Patent Rights |
| Apr 3, 2020 Reel 53182, frame 700 | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clearwire Legacy LLC; Clear Wireless LLC | Termination and Release of Security Interest in Patents |
| Apr 3, 2020 reel/frame not recorded | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clearwire Legacy LLC | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB |
| Apr 3, 2020 reel/frame not recorded | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clear Wireless LLC | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB |
| Apr 3, 2020 reel/frame not recorded | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clearwire Legacy LLC | Termination and Release of Security Interest in Patents |
| Apr 3, 2020 reel/frame not recorded | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clear Wireless LLC | Termination and Release of Security Interest in Patents |
| 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
Jul 2029
Term ends Jul 30, 2029. No further fees fall due before then
Note
The 492 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is below the median 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.