57 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Sep 2027. from the record
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Alerts on its grants, lapses and transfers.
2
Ending by 2030
Sep 2027
Next term end
28
Patent families
When these terms end
Held patents by the year their term ends
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Dec 2040 · High confidence
Also notable
Ends May 2035 · High confidence
Also notable
Ends Jun 2038 · High confidence
Platform for Management of User Data
US 11,593,515
Cited by 8 later US patents, top 10% of utility patents granted in 2023 in our data. Protection runs to 2040.
Synchronization of Audio Channel Timing
US 9,723,580
Cited by 37 later US patents, top 10% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2035.
Enhanced System, Method, and Devices for Communicating Inaudible Tones Associated with Audio Files
US 11,030,983
Cited by 8 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2038. 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.
- 1 fee due Mar 5, 2027The maintenance fee for System and Method for an Inaudible Tones Tracking System (US 11,749,046) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
- 1 fee due Apr 29, 2027The maintenance fee for Enhanced System, Method, and Devices for Utilizing Inaudilbe Tones with Music (US 10,460,709) comes due Apr 29, 2027. Unpaid by Oct 29, 2027, it lapses early.
- 1 fee due May 10, 2027The maintenance fee for Digital Audio Transmitter and Receiver (US 9,183,838) comes due May 10, 2027. Unpaid by Nov 10, 2027, it lapses early.
- 1 fee due Jun 3, 2027The maintenance fee for Inaudible Tones Tracking Chip and System for Security and Safety (US 10,497,196) comes due Jun 3, 2027. Unpaid by Dec 3, 2027, it lapses early.
- 2 fees due Sep 3 to 24, 2027 · next Sep 3
- 1 fee due Oct 16, 2027The maintenance fee for Platform for Management of User Data (US 11,960,622) comes due Oct 16, 2027. Unpaid by Apr 17, 2028, it lapses early.
Recent changes
- 10 of the patents on this record were granted since Aug 16, 2026
What they patent
The 5 largest of its 28 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Portfolio Driven Targeted Advertisting Network, System, and Method | 7 in force | to Jan 2041 |
| Enhanced System, Method, and Devices for Utilizing Inaudilbe Tones with Music | 5 in force | to Dec 2038 |
| Inaudible Tones Used for Security and Safety | 5 in force | to Aug 2038 |
| Platform for Management of User Data | 4 in force | to Jan 2041 |
| Systems and Methods to Conceal Un-Recoverable Audio Blocks | 3 in force | to Feb 2044 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,237,407 | High Quality, Controlled Latency Multi-Channel Wireless Digital Audio Distribution System and Methods In force · High confidence | In force | High confidence | |
| US 8,199,941 | Method of Identifying Speakers in a Home Theater System In force · High confidence | In force | High confidence | |
| US 8,660,219 | Circuit and Method for Distinguishing Between an OFDM Signal and a Radar Signal In force · High confidence | In force | High confidence | |
| US 9,183,838 | Digital Audio Transmitter and Receiver In force · High confidence | In force | High confidence | |
| US 9,380,399 | Handheld Interface for Speaker Location In force · High confidence | In force | High confidence | |
| US 9,454,968 | Digital Audio Transmitter and Receiver In force · High confidence | In force | High confidence | |
| US 10,602,468 | Software Based Audio Timing and Synchronization In force · Medium confidence | In force | Medium confidence | |
| US 10,582,461 | Software Based Audio Timing and Synchronization In force · Medium confidence | In force | Medium confidence | |
| US 9,723,580 | Synchronization of Audio Channel Timing In force · High confidence | In force | High confidence | |
| US 9,554,211 | Wireless Speaker Unit In force · High confidence | In force | High confidence |
Also on record, not counted in the 57: 31 applications pending · 1 application 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.