1,881 patents currently held
2 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
5 more records may belong here and await a decision; they are not counted.
The next term ends in Dec 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
64
Ending by 2030
Dec 2026
Next term end
577
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
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
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Mar 2027 · High confidence
Also notable
Ends Jan 2031 · Medium confidence
Also notable
Ends May 2035 · High confidence
Method and Apparatus for Controlling Multimedia Players in a Multi-Zone System
US 7,571,014
The most cited patent in this portfolio, cited by 2,011 later US patents, top 1% of utility patents granted in 2009 in our data. Protection runs to 2027.
Playback Device Pairing
US 11,265,652
Cited by 127 later US patents, top 1% of utility patents granted in 2022 in our data. Protection runs to 2031.
Playback Queue Control Transition
US 10,715,973
Cited by 166 later US patents, top 1% of utility patents granted in 2020 in our data. Protection runs to 2035. A terminal disclaimer caps this term to an earlier patent's.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 8 fees due Nov 14 to 28, 2026 · next Nov 14
- 24 fees due Dec 4 to 27, 2026 · next Dec 4
- 37 fees due Jan 2 to 30, 2027 · next Jan 2
- 45 fees due Feb 1 to 28, 2027 · next Feb 1
- 39 fees due Mar 1 to 26, 2027 · next Mar 1
- 61 fees due Apr 1 to 30, 2027 · next Apr 1
- 53 fees due May 3 to 28, 2027 · next May 3
- 25 fees due Jun 1 to 30, 2027 · next Jun 1
- 29 fees due Jul 2 to 30, 2027 · next Jul 2
- 37 fees due Aug 4 to 27, 2027 · next Aug 4
- 31 fees due Sep 3 to 30, 2027 · next Sep 3
- 31 fees due Oct 2 to 30, 2027 · next Oct 2
- 11 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- Nov 6Assignment recorded on 1 record: Schoeler, William Bennett and 1 other to Sonos, Inc. Recorded Nov 6, 2026, executed Jan 30, 2025. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76668, frame 719.
- Nov 2Assignment recorded on 1 record: Thoresz, Keith and 3 others to Sonos, Inc. Recorded Nov 2, 2026, executed Aug 1, 2018. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76593, frame 145.
- 73 of the patents on this record were granted since Aug 16, 2026
- 21 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 577 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Controlling and grouping in a multi-zone media system | 35 in force | to Jan 2031 |
| Sound Field Calibration Using Listener Localization | 23 in force | to Apr 2032 |
| Private Queue Indicator | 12 in force | to May 2036 |
| Systems and Methods for Networked Music Playback | 12 in force | to Dec 2031 |
| Playback Device Configuration Based on Proximity Detection | 10 in force | to Sep 2034 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D672,748 | Playback Device In force · High confidence | In force | High confidence | |
| US 8,020,023 | Systems and Methods for Synchronizing Operations Among a Plurality of Independently Clocked Digital Data Processing Devices Without a Voltage Controlled Crystal Oscillator In force · High confidence | In force | High confidence | |
| US 7,571,014 | Method and Apparatus for Controlling Multimedia Players in a Multi-Zone System In force · High confidence | In force | High confidence | |
| US 11,625,221 | Synchronizing Playback by Media Playback Devices In force · Low confidence | In force | Low confidence | |
| US 9,520,850 | Power Supplies In force · High confidence | In force | High confidence | |
| US D684,948 | Playback Device In force · High confidence | In force | High confidence | |
| US D685,392 | Playback Device In force · High confidence | In force | High confidence | |
| US 10,268,352 | Method and apparatus for managing a playlist by metadata In force · High confidence | In force | High confidence | |
| US 7,710,941 | Method and Device for the Synchronised Restitution of Data Flows In force · High confidence | In force | High confidence | |
| US 10,157,034 | Clock Rate Adjustment in a Multi-Zone System In force · High confidence | In force | High confidence |
Also on record, not counted in the 1,881: 2 patents in force now held by others · 294 patents ended · 420 applications pending · 51 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.