50 patents currently held
18 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.
The next term ends in Nov 2026. from the record
Of the 18 now held by other companies, 18 name Biamp Systems LLC as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
21
Ending by 2030
Nov 2026
Next term end
26
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 Feb 2034 · Low confidence
Also notable
Ends Jun 2032 · High confidence
Also notable
Ends Jun 2030 · High confidence
Ceiling Tile Microphone
US 10,728,653
Cited by 103 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2034. A terminal disclaimer caps this term to an earlier patent's.
Conferencing Apparatus
US 11,272,064
Cited by 52 later US patents, top 5% of utility patents granted in 2022 in our data. Protection runs to 2032. A terminal disclaimer caps this term to an earlier patent's.
Portable Speakerphone Device with Selective Mixing
US 8,077,857
Cited by 44 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
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.
- 3 fees due Feb 27 to 28, 2027 · next Feb 27
- 1 fee due May 28, 2027The maintenance fee for Conferencing Device with Beamforming and Echo Cancellation (US 11,831,812) comes due May 28, 2027. Unpaid by Nov 29, 2027, it lapses early.
- 1 fee due Jun 29, 2027The maintenance fee for Methods and Apparatuses for Multiple Configurations of Beamforming Microphone Arrays (US 9,226,088) comes due Jun 29, 2027. Unpaid by Dec 29, 2027, it lapses early.
- 1 fee due Aug 16, 2027The maintenance fee for Methods and Apparatuses for Echo Cancelation with Beamforming Microphone Arrays (US 9,264,553) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
- 1 fee due Sep 22, 2027The maintenance fee for Augmentation of a Beamforming Microphone Array with Non-Beamforming Microphones (US 9,294,839) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
- 1 fee due Oct 2, 2027The maintenance fee for Ceiling Tile Microphone (US 11,950,050) comes due Oct 2, 2027. Unpaid by Apr 3, 2028, it lapses early.
Recent changes
- Oct 8Assignment recorded on 2 patents: Clearone, Inc. to Clearone Holding, LLC Recorded Oct 8, 2026, executed Aug 28, 2025. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76636, frame 421.
What they patent
The 5 largest of its 26 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Augmentation of a Beamforming Microphone Array with Non-Beamforming Microphones | 13 in force | to Jul 2034 |
| Methods and Apparatuses for Echo Cancelation with Beamforming Microphone Arrays | 10 in force | to Jun 2034 |
| Portable Speakerphone Device with Selective Mixing | 3 in force | to Mar 2031 |
| Portable Speakerphone Device and Subsystem | 2 in force | to Jan 2030 |
| Wideband Beamforming with Main Lobe Steering and Interference Cancellation at Multiple Independent Frequencies and Spatial Locations | 1 in force | to Apr 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,446,714 | Anti-Reflective Interference Antennas with Radially-Oriented Elements In force · High confidence | In force | High confidence | |
| US 7,480,502 | Wireless Communications Device with Reflective Interference Immunity In force · High confidence | In force | High confidence | |
| US 8,325,911 | Personal Speakerphone Device In force · High confidence | In force | High confidence | |
| US D678,237 | Conference Phone In force · High confidence | In force | High confidence | |
| US D678,239 | Internet Protocol Conference Telephone Station In force · High confidence | In force | High confidence | |
| US 8,069,206 | System and Method for Real-Time Feedback with Conservative Network Usage in a Teleconferencing System In force · High confidence | In force | High confidence | |
| US 8,644,525 | Virtual Microphones in Electronic Conferencing Systems In force · High confidence | In force | High confidence | |
| US D699,712 | Beamforming Microphone In force · High confidence | In force | High confidence | |
| US 7,711,126 | Audio Distribution System with Local Integrally Wall Mounted Control Point Nodes In force · High confidence | In force | High confidence | |
| US 7,864,937 | Common Control of an Electronic Multi-Pod Conferencing System In force · High confidence | In force | High confidence |
Also on record, not counted in the 50: 18 patents in force now held by others · 22 patents ended · 3 applications pending · 18 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.