The Patent Finder
US

Sounding and Tone Block Allocation for Orthogonal Frequency Multiple Access (OFDMA) in Wireless Local Area Networks

US 9,473,341 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Max Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Nov 26, 2034 · High confidence

Filed Nov 26, 2014 as application 14/555,183 · Granted Oct 18, 2016
Base term, 20 years from filing
Today
20 years from filing
2014 2034
Clock starts
Nov 26, 2014
Term ends
Nov 26, 2034
Granted
Oct 18, 2016
base term 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
None
Term adjustment
No prosecution delay on this record.
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.
5
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 is its 20-year base term, with no adjustment for 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Nov 26, 2014, when this application, 14/555,183, was filedNov 26, 2034High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 26, 2034High confidence

This family

US 9,473,341this patent
Nov 2034
Nov 2034
US 10,103,923In force
Nov 2034
Nov 2034
US 10,075,318In force
Nov 2034
Nov 2034
US 10,511,471In force
Nov 2034
Nov 2034
Application 16/716,170Abandoned
not computed
not computed
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.
RecordedAssignorAssigneeConveyance
Mar 3, 2016
Reel 37887, frame 444
Zhang, Hongyuan; Sun, Yakun; Lou, Hui-ling; Chu, LiwenMarvell Semiconductor, Inc.Assignment of Assignor's Interest
Mar 3, 2016
Reel 37887, frame 457
Marvell Semiconductor, Inc.Marvell International Ltd.Assignment of Assignor's Interest
Mar 3, 2016
Reel 37887, frame 492
Marvell International Ltd.Marvell World Trade Ltd.Assignment of Assignor's Interest
Mar 3, 2016
Reel 37887, frame 523
Marvell World Trade Ltd.Marvell International Ltd.License
Sep 26, 2019
Reel 50538, frame 255
Marvell World Trade Ltd.Marvell International Ltd.Assignment of Assignor's Interest
Dec 18, 2019
Reel 51536, frame 1
Marvell International Ltd.NXP USA, Inc.Assignment of Assignor's Interest
Feb 17, 2026
Reel 73802, frame 70
NXP USA, Inc.Max Wireless, LLCAssignment of Assignor's 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited