US 8582789

Here's a concise summary of US Patent 8582789:

US Patent 8582789: Hearing Enhancement Systems

• Title: Hearing enhancement systems
• Assignee: Ingeniospec LLC
• Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
• Filing Date: June 6, 2008 (Application number US12/157,092)
• Issue Date: November 12, 2013
• Abstract: A hearing enhancement system that enhances a user's hearing is disclosed. For example, the system can include an interface unit that has a directional speaker and a microphone. The microphone captures input audio signals that are transformed into ultrasonic signals. The speaker transmits the ultrasonic signals, which are transformed into output audio signals by interaction with air. At least a portion of the output audio signals are modified to enhance the hearing of the user. Based on the system, the user's ear remains free from any inserted objects and thus is free from annoying occlusion effects. Compared to existing hearing aids, the system is relatively inexpensive. In another embodiment, the system can also be used as a phone. In yet another embodiment, the system can also access audio signals from other portable or non-portable instruments, wired or wirelessly, such as from home entertainment units, phones, microphones at a conference or speakers at a movie theater.

Plain-Language Overview of Independent Claims:

The patent contains three independent claims: Claim 1, Claim 13, and Claim 20.

• Claim 1: Hearing Enhancement System
  This claim describes a complete hearing enhancement system for a user. It includes an "audio system" that takes in sound signals, converts them into high-frequency wireless signals (up-converts), and transmits them. The system also has a "wireless receiver" to pick up these high-frequency signals. A "down-converter" then converts them back into regular audio signals. A "modifier" adjusts these audio signals based on the user's specific hearing characteristics to improve their hearing. Finally, a "speaker" generates the enhanced audio output for the user.
• Claim 13: Hearing Enhancement Apparatus
  This claim focuses on a portable "apparatus" (device) that works with an existing audio system. The audio system, in this context, is separately configured to up-convert input signals into wirelessly transmittable high-frequency signals. The apparatus itself comprises a "wireless receiver" to get these signals, a "down-converter" to change them back to audio, a "modifier" to adjust them based on the user's hearing needs for enhancement, and a "speaker" to produce the customized audio for the user. This claim emphasizes the apparatus as a wirelessly coupled component, distinct from the initial audio source.
• Claim 20: Hearing Enhancement Apparatus (with an interface unit)
  Claim 20 describes a hearing enhancement apparatus that includes an "interface unit." This interface unit has a directional speaker and a microphone. The microphone captures audio signals, which are then converted into ultrasonic signals by the system. The directional speaker transmits these ultrasonic signals through the air towards the user's ear. The air then transforms these ultrasonic signals back into audible sound (output audio signals). The crucial part is that at least some of these output audio signals have a higher power level compared to the original input audio signals at corresponding frequencies, thereby enhancing the user's hearing. This claim specifically details the use of ultrasonic transformation for directional audio delivery.

CAFC 2026 Dockets:

As of April 26, 2026, a search of CAFC 2026 dockets did not yield any specific litigation directly referencing US patent 8582789. The search results provided general information about CAFC case summaries and the court's activities in 2026, but no specific docket entries for this patent were found.The initial plan was to search USPTO and CAFC 2026 dockets. I have successfully gathered information about the patent from Google Patents, which is authoritative for USPTO data. This includes the title, assignee, inventors, filing date, issue date, and abstract. I have also identified and summarized the independent claims from the provided patent text.

The search for CAFC 2026 dockets did not yield any specific results for patent 8582789, only general CAFC activity. Therefore, I have sufficient information to answer the user's request.

Here's a concise summary of US Patent 8582789:

US Patent 8582789: Hearing enhancement systems

• Title: Hearing enhancement systems
• Assignee: Ingeniospec LLC
• Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
• Filing Date: June 6, 2008 (Application number US12/157,092)
• Issue Date: November 12, 2013
• Abstract: A hearing enhancement system that enhances a user's hearing is disclosed. For example, the system can include an "interface unit" that has a directional speaker and a microphone. The microphone captures input audio signals that are transformed into ultrasonic signals. The speaker transmits the ultrasonic signals, which are transformed into output audio signals by interaction with air. At least a portion of the output audio signals are modified to enhance the hearing of the user. Based on the system, the user's ear remains free from any inserted objects and thus is free from annoying occlusion effects. Compared to existing hearing aids, the system is relatively inexpensive. In another embodiment, the system can also be used as a phone. In yet another embodiment, the system can also access audio signals from other portable or non-portable instruments, wired or wirelessly, such as from home entertainment units, phones, microphones at a conference or speakers at a movie theater.

Plain-Language Overview of Independent Claims:

US Patent 8582789 contains three independent claims: Claim 1, Claim 13, and Claim 20.

• Claim 1: A Hearing Enhancement System
  This claim describes a hearing enhancement system that receives input audio signals, converts them into high-frequency wireless signals (up-converts), and transmits them. A separate wireless receiver within the system then receives these up-converted signals, which are subsequently converted back to audio signals (down-converted). These down-converted signals are then adjusted (modified) based on the user's specific hearing characteristics to improve their hearing. Finally, a speaker generates the enhanced audio output for the user.
• Claim 13: A Hearing Enhancement Apparatus
  This claim defines a standalone hearing enhancement apparatus designed to be wirelessly connected to an external audio system. The external audio system is responsible for up-converting its input signals into wireless high-frequency signals. The apparatus itself comprises a wireless receiver to capture these high-frequency signals, a down-converter to convert them into audio, a modifier to adjust these audio signals according to the user's hearing characteristics for enhancement, and a speaker to produce the personalized audio output.
• Claim 20: A Hearing Enhancement Apparatus with Ultrasonic Transmission
  Claim 20 describes a hearing enhancement apparatus that includes an interface unit equipped with a directional speaker and a microphone. The microphone picks up audio signals, which are then processed and transformed into ultrasonic signals by the system. The directional speaker then transmits these ultrasonic signals through the air towards the user's ear. As these ultrasonic signals travel through the air, they are naturally converted back into audible sound (output audio signals). The key feature is that at least a part of these output audio signals has a higher power level compared to the initial received audio signals at corresponding frequencies, thereby improving the user's hearing.

CAFC 2026 Dockets:

As of April 26, 2026, no specific litigation or docket entries directly referencing US patent 8582789 were found in the CAFC 2026 dockets through the conducted search.

As a patent attorney, I have investigated litigation involving US Patent 8582789.

Here is the information found regarding litigation for US Patent 8582789:

• Case: 1:25-cv-00867

  • Plaintiff(s): Ingeniospec LLC
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: Texas Western District Court
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Active.

• Case: IPR2025-01547

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: PTAB
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Settlement.

• Case: IPR2026-00144

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: PTAB
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Not Instituted - Procedural.

• Case: 2:24-cv-00822

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: Texas Eastern District Court
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Active.

• Case: 2:24-cv-00823

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: Texas Eastern District Court
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Active.

• Case: 1:25-cv-12531

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: Massachusetts District Court
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Active.

• Case: 2:24-cv-00819

  • Plaintiff(s): Not specified in the provided snippet.
  • Defendant(s): Not specified in the provided snippet.
  • Jurisdiction: Texas Eastern District Court
  • Filing Date: Not specified in the provided snippet.
  • Outcome/Status: Active.

Proceedings overview

Two AIA trial proceedings have been filed against US Patent 8,582,789. One IPR (IPR2025-01547) was terminated due to settlement, and another (IPR2026-00144) was denied institution on discretionary grounds. This indicates that no claims of US8582789 have been invalidated at the PTAB, presenting a hardened defensive posture for the patent owner, as the patent has survived attempts to challenge its claims via IPR.

IPR2026-00144 — [Apple Inc.](/litigations/by-plaintiff/Apple%20Inc.) v. Ingeniospec LLC

• Type: Inter Partes Review
• Filed: 2025-11-21
• Status: Discretionary Denial — The PTAB declined to institute the IPR, not necessarily on the merits of the obviousness/anticipation challenge, but based on procedural or policy considerations.
• Judge panel: Information regarding the specific judge panel for this discretionary denial is not immediately available from public summaries without accessing the full PTAB order.
• Petition grounds: Details of the specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) for IPR2026-00144 are not readily available in public summaries for discretionary denials.
• Institution decision: Denied (date not specified in provided information, but the last modified date is 2026-05-20, indicating a recent decision). The denial was discretionary, suggesting factors beyond the merits of patentability may have influenced the decision (e.g., related district court litigation, as suggested by "PTAB case IPR2026-00144 filed (Not Instituted - Procedural)" on Google Patents).
• Final Written Decision: Not issued, as institution was denied.
• Settlement / termination: Not applicable.
• Appeal: Not applicable, as institution was denied.
• Defensive value: This proceeding indicates that Apple Inc.'s challenge to the patent did not proceed to trial. While the claims were not upheld on the merits, the denial of institution means the claims remain untouched by this specific IPR. For a potential defendant, this signals that previous challenges have faced procedural hurdles at the institution stage.

IPR2025-01547 — Bose Corporation v. Ingeniospec LLC

• Type: Inter Partes Review
• Filed: 2025-09-19
• Status: Terminated-Settled — The parties involved reached a settlement agreement, leading to the termination of the IPR proceeding.
• Judge panel: Information regarding the specific judge panel for this settled IPR is not immediately available from public summaries without accessing the full PTAB order.
• Petition grounds: Details of the specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) for IPR2025-01547 are not readily available in public summaries for settled cases.
• Institution decision: The outcome of the institution decision (instituted/denied/partially instituted) for IPR2025-01547 before its termination due to settlement is not explicitly stated in the provided information.
• Final Written Decision: Not issued, as the proceeding was terminated due to settlement.
• Settlement / termination: The proceeding was terminated due to settlement, with a last modified date of 2025-11-18. The specific terms of the settlement are confidential.
• Appeal: Not applicable, as the proceeding was terminated due to settlement.
• Defensive value: This settlement indicates that Bose Corporation and the patent owner resolved their dispute, likely with an agreement that prevented a final PTAB decision on the merits. For a defendant facing assertion of this patent, it means that the challenged claims have not been invalidated by this IPR. However, it doesn't confirm their patentability or non-patentability, as the merits were not fully adjudicated. The confidential nature of the settlement means the terms are unknown.

Strategic summary

Currently, no claims of US Patent 8,582,789 have been canceled through AIA trial proceedings. IPR2025-01547, filed by Bose Corporation, was terminated due to a settlement, meaning the claims challenged in that petition were not adjudicated to a Final Written Decision. IPR2026-00144, filed by Apple Inc., was met with a discretionary denial of institution, implying the PTAB chose not to proceed with a full review, likely on procedural grounds rather than a full assessment of the prior art. Therefore, all claims of US8582789 remain untested by a Final Written Decision at the PTAB.

The estoppel landscape is relatively clear given the outcomes. For IPR2026-00144, since institution was denied, the petitioner (Apple Inc.) and its privies would generally not be estopped under 35 U.S.C. § 315(e)(2) from raising the same grounds or any grounds that could have been reasonably raised in future proceedings, as a trial was never instituted. For IPR2025-01547, because it was terminated by settlement, the estoppel effects depend heavily on the terms of the confidential settlement agreement. Absent specific details, it is difficult to definitively state which prior-art grounds are still available to the petitioner (Bose Corporation) or its privies. However, for other potential defendants not in privy with Bose, the prior art grounds remain available for challenge.

The pattern of activity shows two significant tech companies, Bose and Apple, have engaged with this patent at the PTAB. Bose settled its challenge, and Apple's challenge was denied institution. This suggests the patent owner, Ingeniospec LLC, has successfully defended the patent against these initial IPR attempts without any claims being invalidated. The mention of "Unified Patents Litigation Data" and "Unified Patents PTAB Data" on Google Patents in relation to other litigation cases for this patent family suggests a defensive aggregator might be involved in monitoring or supporting challenges, but neither of the identified IPRs list Unified Patents as the petitioner.

Recommended next steps

Given that no claims of US8582789 have been invalidated by a Final Written Decision from the PTAB, a defendant facing assertion of this patent would need to conduct thorough due diligence on the specific grounds and prior art presented in IPR2025-01547 and IPR2026-00144.

• For IPR2026-00144, the discretionary denial means the PTAB did not rule on the merits of patentability. It would be crucial to obtain the institution decision to understand the precise reasoning for the denial. If the denial was based on Fintiv factors (parallel district court litigation), an accused infringer might still consider an IPR if their litigation posture differs significantly from Apple's.
• For IPR2025-01547, the settlement makes it difficult to ascertain the strength of Bose's challenge or the claims' vulnerability. A potential defendant should analyze the prior art Bose presented in its petition (if publicly accessible) to evaluate if similar grounds could be re-raised in a new IPR, assuming no privity with Bose and no other estoppel applies.

The current legal status of the patent is "Active, expires 2026-11-26". This means the patent has only a few months of life remaining. Any defensive strategy, including a new IPR, would need to consider this very limited remaining term, which significantly impacts the cost-benefit analysis of such a proceeding.

Inventors

• Kwok Wai Cheung: Employer at time of filing (June 6, 2008) is not explicitly stated in the patent or readily determinable.
• Peter P. Tong: Co-founder of IpVenture Inc., the original assignee. Employer at time of filing (June 6, 2008) appears to be IpVenture Inc..
• C. Douglass Thomas: Co-founder of IpVenture Inc., the original assignee. Employer at time of filing (June 6, 2008) appears to be IpVenture Inc..

No unusual patterns, such as all inventors departing the original assignee within 12 months of filing, were determinable from the provided information. Peter P. Tong and C. Douglass Thomas were co-founders of the original assignee, IpVenture Inc., and were later assignors of the patent.

Original assignee

The original assignee on the issued patent is IpVenture Inc.

• Shipped a product embodying the claims: No, IpVenture Inc.'s primary business model focuses on building, monetizing, and defending patent portfolios through licensing, rather than manufacturing or selling products directly embodying the claims of US8582789. While they list "Personalized Hearing" as an "IntellectualWare" area, there is no evidence they shipped a product embodying these specific claims.
• Primary line of business: Intellectual property development, protection, and monetization through licensing and acquisition of patent portfolios.
• Current status: Operating.

Assignment timeline

• 2008-06-06 (filed) - Patent application US12/157,092 filed by IpVenture Inc.

• 2013-11-12 (issued) - Patent US8582789 granted to IpVenture Inc.

• 2024-09-27 (executed) / recorded 2024-10-04 — Reel 058863/0187

  • Conveyance: Assignment
  • Assignor: IPVENTURE, INC.
  • Assignee: THOMAS, C. DOUGLASS; TONG, PETER P.
  • Correspondent: BRENT D. REYNOLDS, REYNOLDS LAW GROUP PLC, 1800 BERING DRIVE, SUITE 800 HOUSTON TX 77057.
  • Context: Transfer from corporate entity (IpVenture Inc.) to individual inventors.

• 2024-09-27 (executed) / recorded 2024-10-04 — Reel 058863/0189

  • Conveyance: Assignment
  • Assignor: THOMAS, C. DOUGLASS; TONG, PETER P.
  • Assignee: INGENIOSPEC, LLC
  • Correspondent: BRENT D. REYNOLDS, REYNOLDS LAW GROUP PLC, 1800 BERING DRIVE, SUITE 800 HOUSTON TX 77057. (This correspondent recurs in this chain.)
  • Context: Transfer from individual inventors to new corporate entity (Ingeniospec LLC).

Timeline diagram

timeline
    title Ownership of US 8582789
    2008 : Filed by IpVenture Inc
    2013 : Issued to IpVenture Inc
    2024 : Assigned to Thomas and Tong
         : Assigned to Ingeniospec LLC

NPE / troll-pattern signals

1. Shell-entity transfer — Present.

   • IpVenture Inc. describes its business as building, monetizing, and defending patent portfolios through licensing, which is characteristic of a non-practicing entity (NPE).
   • Ingeniospec LLC is explicitly identified as an NPE by Unified Patents and RPX Insight. The transfers on 2024-10-04 (Reel 058863/0187 and 058863/0189) convey the patent from IpVenture, through the inventors, to Ingeniospec LLC, a known NPE.

2. Known asserter in the chain — Present.

   • Ingeniospec LLC is widely recognized and documented as a Non-Practicing Entity (NPE) by prominent patent monitoring and defensive aggregation services like Unified Patents and RPX Insight. RPX Insight, for example, reports on IngenioSpec's numerous litigation campaigns.

3. Repeat correspondent across the chain — Present.

   • BRENT D. REYNOLDS, REYNOLDS LAW GROUP PLC, 1800 BERING DRIVE, SUITE 800 HOUSTON TX 77057, served as the correspondent for both assignments recorded on 2024-10-04 (Reel 058863/0187 and Reel 058863/0189). This is a recurrence of the same correspondent within the recorded chain for this patent.

4. Cascading transfers — Present.

   • The patent underwent two consecutive assignments on the same execution date (2024-09-27) and recorded on the same day (2024-10-04): first from IpVenture Inc. to C. Douglass Thomas and Peter P. Tong, and then immediately from Thomas and Tong to Ingeniospec LLC (Reel 058863/0187 and 058863/0189). This rapid, back-to-back transfer within a single day is a strong indicator of cascading transfers.

5. Pre-litigation transfer — Present.

   • The assignment to Ingeniospec LLC was recorded on 2024-10-04 (Reel 058863/0189). Infringement lawsuits asserting this patent by Ingeniospec LLC were filed shortly thereafter, such as case 2:24-cv-00819 against Samsung, filed on 2024-10-07. This filing date is just three days after the patent's assignment to Ingeniospec LLC, well within the 6-month pre-litigation window.

6. Bankruptcy fire-sale — Not present. There is no indication from the provided information that any of the assignors or assignees in the chain underwent bankruptcy proceedings.

7. Privateering — Unclear. While both IpVenture Inc. and Ingeniospec LLC are IP monetization entities, there is no explicit evidence or reporting to suggest that an operating company transferred the patent to them specifically to assert on the operating company's behalf against competitors. The transfers appear to be part of a direct NPE operation.

8. Defensive aggregator (anti-NPE) — Not present. The ownership chain terminates with Ingeniospec LLC, which is an identified NPE, not a defensive aggregator.

Verdict

NPE — high confidence

This verdict is based on multiple strong signals: Ingeniospec LLC is a known NPE, the patent was transferred through cascading assignments on the same day (Reel 058863/0187, 058863/0189), the same correspondent handled both transfers, and infringement litigation asserting this patent commenced just days after its assignment to Ingeniospec LLC. The original assignee, IpVenture Inc., also operates as an IP monetization firm, further cementing the NPE nature of this patent's chain.

Verification of assignments can be performed at the USPTO Assignment Center: https://assignmentcenter.uspto.gov/ (search for patent number 8582789).

Here is an analysis of the most relevant patent citations for US patent 8582789, based on a review of its cited references and the earliest priority date of April 15, 2003. The selected prior art documents were published before this priority date and cover key aspects of hearing enhancement technology.

Most Relevant Prior Art for US Patent 8582789

1. US5544256A: Hearing aid with adaptive directional microphone

• Full Citation: US5544256A, Killion et al., "Hearing aid with adaptive directional microphone", Issued: August 6, 1996.
• Publication/Filing Date: Issued August 6, 1996; Filed February 27, 1995.
• Brief Description: This patent describes a hearing aid system that incorporates an adaptive directional microphone, often utilizing multiple microphone elements. The primary purpose of this directional microphone is to enhance the signal-to-noise ratio by selectively emphasizing sounds originating from a specific direction (e.g., in front of the user) while attenuating sounds from other directions. This improves the clarity of desired sounds for the hearing aid wearer.
• Potential Anticipation (35 U.S.C. § 102):
  • Claim 20: This patent potentially anticipates the general concept of using a microphone with directional capabilities within a hearing enhancement apparatus, as mentioned in Claim 20 ("an interface unit that has... a microphone"). While Claim 20 further specifies a directional speaker and ultrasonic transformation, the use of a directional microphone to improve sound input for hearing enhancement is a fundamental concept disclosed by US5544256A. It also lays groundwork for modifying audio signals based on directional input to enhance hearing.

2. US5682436A: Digital hearing aid and method of digitally enhancing sound

• Full Citation: US5682436A, El-Mallawany, "Digital hearing aid and method of digitally enhancing sound", Issued: October 28, 1997.
• Publication/Filing Date: Issued October 28, 1997; Filed May 2, 1996.
• Brief Description: This patent discloses a digital hearing aid system that employs digital signal processing (DSP) techniques to enhance received audio signals. The system is configured to compensate for a user's specific hearing loss by digitally modifying the sound, often through frequency-dependent amplification or filtering, to provide a personalized hearing experience.
• Potential Anticipation (35 U.S.C. § 102):
  • Claims 1 & 13: This patent directly anticipates the core functionality of "modifying the down-converted signals into modified signals based on at least one hearing characteristic of the user to enhance the hearing of the user" as recited in Claim 1 and Claim 13. It describes a digital system capable of tailoring sound enhancement to an individual's hearing profile. While it doesn't explicitly describe wireless up-conversion and down-conversion via WiFi, it clearly teaches the "modifier" aspect and the generation of enhanced audio output signals based on user-specific hearing needs.
  • Claim 20: It could potentially anticipate the "at least a portion of the output audio signals have higher power with respect to the received audio signals at corresponding frequencies to enhance the hearing of the user" aspect through its digital sound enhancement capabilities, particularly frequency-dependent amplification. However, it lacks the specific directional speaker and ultrasonic transformation elements of Claim 20.

3. US6466663B1: Digital hearing aid with reduced latency of direct sound

• Full Citation: US6466663B1, Harms, "Digital hearing aid with reduced latency of direct sound", Issued: October 15, 2002.
• Publication/Filing Date: Issued October 15, 2002; Filed August 2, 2000.
• Brief Description: This patent addresses the challenge of latency in digital hearing aids, focusing on minimizing the delay between the direct sound reaching the wearer's ear and the processed, amplified sound delivered by the hearing aid. Reducing this latency helps prevent distracting echo effects and provides a more natural listening experience for the user. It also involves digital signal processing for general sound enhancement.
• Potential Anticipation (35 U.S.C. § 102):
  • Claims 1 & 13: This patent contributes to the anticipation of the "modifier configured to modify the down-converted signals into modified signals based on at least one hearing characteristic of the user to enhance the hearing of the user." Its focus on reduced latency demonstrates advanced digital signal processing techniques for hearing improvement, aligning with sophisticated "modification" of audio signals. However, the wireless transmission aspects of Claim 1 and 13 are not explicitly disclosed.
  • Claim 20: The patent's emphasis on managing latency for a natural listening experience is relevant to the general operation of a hearing enhancement system, especially one like that in Claim 20 where the ear canal remains open, allowing both direct and enhanced sound to be perceived. This supports the need for rapid "signal processing speed" to prevent echoing, as discussed in US8582789.

These cited patents establish a strong foundation in digital hearing aid technology, including directional microphone concepts and personalized sound enhancement, prior to the priority date of US8582789. However, none of these specific prior art patents explicitly combine all the elements of US8582789's independent claims, particularly the wireless up-conversion/down-conversion via technologies like WiFi (Claims 1 & 13) or the use of a directional speaker transmitting ultrasonic signals that are transformed into audio in air (Claim 20).

Under 35 U.S.C. § 103, an invention is considered obvious if the differences between the claimed invention and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art (PHOSITA). For US Patent 8582789, several prior art references are explicitly cross-referenced or incorporated, providing a strong basis for an obviousness analysis.

The primary problem addressed by US8582789 and its cited prior art is the inadequacies of traditional hearing aids, including their high cost, social stigma, need for custom fitting, occlusion effects, and handling difficulties. [cite: Full patent text] The solutions generally involve non-invasive, often wireless, and directional hearing enhancement systems.

The motivation for a PHOSITA to combine the following references would be to overcome these known problems in the art by integrating wireless audio delivery, directional sound projection, and personalized hearing amplification in a non-invasive manner.

Independent Claim 1 Analysis:

Claim 1 describes a hearing enhancement system comprising an audio system configured to up-convert and wirelessly transmit signals, a wireless receiver, a down-converter, a modifier based on user hearing characteristics, and a speaker for output. [cite: Full patent text]

• Combination: U.S. Provisional Patent Application No. 60/462,570 ('570 provisional), U.S. Provisional Patent Application No. 60/469,221 ('221 provisional), U.S. Provisional Patent Application No. 60/493,441 ('441 provisional), U.S. patent application Ser. No. 10/826,528 ('528 application), and U.S. patent application Ser. No. 10/826,527 ('527 application, now U.S. Pat. No. 7,388,962).

• Teaching: The '570, '221, and '441 provisional applications broadly disclose "WIRELESS COMMUNICATION SYSTEMS OR DEVICES" and "HEARING ENHANCEMENT SYSTEMS OR DEVICES," including "WIRELESS AUDIO DELIVERY." [cite: Full patent text] The '528 application specifically details "METHOD AND APPARATUS FOR WIRELESS AUDIO DELIVERY." [cite: Full patent text] These references collectively teach the elements of an audio system up-converting and wirelessly transmitting, a wireless receiver, and a down-converter leading to a speaker. The '527 application, titled "DIRECTIONAL HEARING ENHANCEMENT SYSTEMS," and its relationship as the parent of the '789 patent, would teach the core concept of a hearing enhancement system. The '789 patent itself, in describing its invention, states that "the system then converts the wireless signals to audio signals for the user to comfortably listen to the signals." [cite: Full patent text] Furthermore, the '789 patent describes tailoring amplification to a user's hearing needs through calibration, which generates a "user's hearing profile" used to "adjust the amplification of the audio signals across the frequencies." [cite: Full patent text] This "modifier" function is a fundamental aspect of hearing enhancement.

• Motivation: A PHOSITA would be motivated to combine the wireless audio delivery principles taught by the '570, '221, '441 provisionals and the '528 application with the hearing enhancement concepts from the '527 application. The goal would be to create a convenient, wireless hearing enhancement system that personalizes audio delivery based on a user's hearing characteristics. The "PERSONALIZED AUDIO SYSTEMS OR DEVICES" explicitly mentioned in the '221 provisional further reinforce the motivation to customize audio signals based on user preferences or hearing profiles, which, when combined with wireless delivery, would directly lead to the system described in Claim 1. This combination directly addresses the desire for improved user experience and accessibility over traditional hearing aids.

Independent Claim 13 Analysis:

Claim 13 describes a hearing enhancement apparatus that is wirelessly coupled to an external audio system, comprising a wireless receiver, a down-converter, a modifier based on user hearing characteristics, and a speaker. [cite: Full patent text]

• Combination: The '570, '221, '441 provisional applications, the '528 application, and the '527 application.

• Teaching: As discussed for Claim 1, these references broadly teach wireless communication systems, hearing enhancement systems, and personalized audio systems. The '528 application teaches methods and apparatus for wireless audio delivery, covering the wireless receiver, down-converter, and speaker elements of the apparatus. The '789 patent explicitly discusses the system's ability to "pick up, capture or access audio signals from a number of portable or non-portable instruments" wirelessly (e.g., "home entertainment units, phones, microphones at a conference, and speakers at a movie theaters"), [cite: Full patent text] and to function as a headset for a phone, coupled wirelessly. [cite: Full patent text] This directly teaches the apparatus being wirelessly coupled to an external audio system. The modifier element is also taught by the discussion in '789 and its parent '527 about tailoring amplification based on a user's hearing profile. [cite: Full patent text]

• Motivation: A PHOSITA would be motivated to develop a flexible and portable hearing enhancement apparatus that can seamlessly connect to various existing audio sources (like TVs, phones, conference systems) wirelessly, instead of being limited to a single input or requiring physical insertion into the ear. The integration of wireless audio delivery (from '528) with personalized hearing enhancement (from '527 and '221 provisional) to create an auxiliary, wirelessly coupled device would be an obvious extension to provide versatility and convenience for users with mild to moderate hearing loss, directly addressing the limitations of fixed or intrusive traditional hearing aids.

Independent Claim 20 Analysis:

Claim 20 details a hearing enhancement apparatus with an interface unit, a directional speaker, and a microphone. It specifies the transformation of captured audio signals into ultrasonic signals, which are then transmitted by the directional speaker towards the user's ear and demodulated by air into output audio signals, with a portion of the output having higher power to enhance hearing. [cite: Full patent text]

• Combination: U.S. patent application Ser. No. 10/826,527 ('527 application, now U.S. Pat. No. 7,388,962), U.S. patent application Ser. No. 10/826,529 ('529 application, now U.S. Pat. No. 7,269,452), and U.S. Provisional Patent Application No. 60/469,221 ('221 provisional).

• Teaching: The '527 application is titled "DIRECTIONAL HEARING ENHANCEMENT SYSTEMS," which directly points to the core invention. The '789 patent's description explicitly states that "one embodiment of the hearing enhancement system includes an interface unit that has the directional speaker and a microphone." [cite: Full patent text] It further elaborates on the mechanism: "the microphone receives audio signals, which are transformed by the system into ultrasonic signals. Then, the directional speaker transmits the ultrasonic signals in air towards an ear of the user. The transmitted signals are transformed back into audio signals by air to form the output audio signals." [cite: Full patent text] The '529 application, titled "DIRECTIONAL WIRELESS COMMUNICATION SYSTEMS," is incorporated by reference and is described as detailing "Different embodiments of the directional speakers" [cite: Full patent text] and methods to "increase the demodulation or mixing efficiency of the ultrasonic signals." [cite: Full patent text] The concept of "at least a portion of the output audio signals having higher power...to enhance the hearing of the user" is inherent to any hearing enhancement system, and the '789 patent itself discusses how "amplification can mean the power level of the output audio signals being higher than the received audio signals." [cite: Full patent text] The '221 provisional mentions "DIRECTIONAL SPEAKER FOR ELECTRONIC DEVICE" and "PERSONALIZED AUDIO SYSTEMS OR DEVICES," providing further context for the directional speaker and hearing enhancement.

• Motivation: A PHOSITA would be strongly motivated to combine the concept of "directional hearing enhancement systems" from the '527 application with the specific technical implementation of directional ultrasonic transmission and air demodulation taught by the '529 application. The aim would be to create a non-invasive hearing enhancement apparatus that avoids the significant drawbacks of in-ear devices (like occlusion and feedback) by projecting sound directionally towards the user's ear from an external unit. The increase in power for "at least a portion of the output audio signals" is a fundamental requirement for "enhancing the hearing of the user," and the '789 patent acknowledges natural ear canal resonance contributing to this, implying a known biological effect a PHOSITA would leverage. [cite: Full patent text] The integration of a microphone and directional speaker in an "interface unit" would be an obvious design to capture ambient sound and re-deliver it directionally and enhanced.