Also listed on Clear Wireless LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 20, 2029 · High confidence
20-year base term ends Jun 27, 2028
Held by Clearwire IP Holdings LLC
Filed Jun 27, 2008 as application 12/147,901 · Granted Apr 5, 2011
Base term plus 511 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Jun 27, 2008
Jun 27, 2008
Term ends
Nov 20, 2029
Nov 20, 2029
Granted
Apr 5, 2011
Apr 5, 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
511
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.
2
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 511 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 Jun 27, 2008, when this application, 12/147,901, was filed | Jun 27, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +511 days, USPTO patent term adjustment record | Nov 20, 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 | Nov 20, 2029 | High confidence |
This family
| US 7,920,877 | this patent Nov 2029 | Nov 2029 |
| Application PCT/US2009/048262 | 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 |
|---|---|---|---|
| Jun 30, 2008 Reel 21170, frame 494 | Lan, Wei-ming; Talaulicar, Abhinay | Sprint Spectrum L.P. | Assignment of Assignor's Interest |
| Jan 30, 2009 Reel 22184, frame 850 | Sprint Spectrum L.P. | Clear Wireless LLC | Assignment of Assignor's Interest |
| Jun 11, 2009 Reel 22815, frame 429 | Clear Wireless LLC | Morgan Stanley & Co., Inc., as Collateral Agent | Security Agreement |
| Nov 24, 2009 Reel 23567, frame 236 | Morgan Stanley & Co., Inc., as Collateral Agent | Clear Wireless 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 |
| Jun 14, 2010 Reel 24704, frame 449 | Clearwire Communications, LLC; Clearwire Finance, Inc., a Corporation of Delaware | Wilmington Trust FSB | Security Agreememt |
| 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 27134, frame 837 | Clear Wireless LLC | Clearwire Communications LLC | 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 41882, frame 875 | Clearwire IP Holdings LLC | Deutsche Bank Trust Company Americas | Grant of First Priority and Junior Priority Security Interest in Patent Rights |
| Apr 1, 2020 Reel 52291, frame 439 | Deutsche Bank Trust Company Americas | Clearwire IP Holdings LLC | Termination and Release 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 958 | Wilmington Trust, National Association, as Successor by Merger to Wilmington Trust FSB | Clearwire Communications, LLC; Clearwire Finance, Inc.; Clear Wireless LLC | Termination and Release of Security Interest in Patents |
| 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 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 Communications, 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 Finance, Inc. | 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 |
| 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 |
| Aug 27, 2020 Reel 53620, frame 588 | Wilmington Trust, National Association | Clearwire Communications LLC; Clearwire Legacy LLC; Clearwire Wireless LLC | Release of Security Interest |
| Aug 27, 2020 reel/frame not recorded | Wilmington Trust, National Association | Clearwire Communications LLC | Release of Security Interest |
| Aug 27, 2020 reel/frame not recorded | Wilmington Trust, National Association | Clearwire Legacy LLC | Release of Security Interest |
| Aug 27, 2020 reel/frame not recorded | Wilmington Trust, National Association | Clearwire Wireless LLC | Release of Security Interest |
| 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
Nov 2029
Term ends Nov 20, 2029. No further fees fall due before then
Note
The 511 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
later US patents cite this one
That is above 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.