US 8923754

Here is a concise summary of US patent 8923754:

• Title: Intelligent broadband relay for wireless networks
• Assignee: Massively Broadband LLC (Note: The listed assignee may be inaccurate as Google has not performed a legal analysis and makes no representation as to its accuracy.)
• Inventor: Theodore S. Rappaport
• Filing Date: 2012-11-14
• Issue Date: 2014-12-30
• Abstract: An ultrawideband (UWB) radio transceiver/repeater provides a low-cost infrastructure solution that merges wireless and wired network devices while providing connection to the plant, flexible repeater capabilities, network security, traffic monitoring and provisioning, and traffic flow control for wired and wireless connectivity of devices or networks. The ultrawideband radio transceiver/repeater can be implemented in discrete, integrated, distributed or embedded forms.

Plain-Language Overview of Independent Claims:

• Claim 1: This claim describes an Ultrawideband (UWB) radio transceiver/repeater device for a wireless network. The device includes radio frequency (RF) components for handling UWB signals, baseband components for signal modulation and demodulation, pipeline components for high-speed, real-time data processing, memory for data storage, a processor for computations, and a controller to manage all these parts. The device is designed to "repeat" received UWB signals, extending their range. It can also integrate with wired networks by processing standard baseband signals, allowing it to act as a bridge between wireless UWB and wired infrastructure. Key functionalities include filtering unwanted network traffic, prioritizing data based on importance, monitoring network usage statistics, and reporting security breaches.
• Claim 21: This claim outlines a method for operating the UWB radio transceiver/repeater device described in Claim 1. The method begins with the controller component gathering network details and desired operational goals. It then sets up the initial operating modes for the device's components (RF, baseband, pipeline, memory, processor). The controller continuously reads or writes control data to these components, responding to current operating conditions or instructions from the network or user. The method involves fast data processing through the pipeline component and determining if new operational instructions are needed based on the results of computations. If needed, these instructions are updated. This processing loop continues until a command to stop operations is received. This method supports the filtering, prioritization, security, and monitoring features of the device.

CAFC 2026 Dockets:
A search of CAFC dockets for 2026 for US patent 8923754 did not yield specific litigation results. The search provided general access to the U.S. Court of Appeals for the Federal Circuit's case information page, but no direct information regarding active cases involving this patent in 2026. Therefore, I cannot authoritatively confirm any ongoing litigation for US patent 8923754 in CAFC dockets for 2026.

Known Litigation Involving US Patent 8923754

As of April 26, 2026, the following litigation involving US Patent 8923754 is known:

• Case 1:

  • Plaintiff(s): Massively Broadband LLC
  • Defendant(s): Not specified in the provided information.
  • Jurisdiction: Texas Eastern District Court
  • Case Number: 2:25-cv-00608
  • Filing Date: Not specified in the provided information, but the case was filed in 2025.
  • Outcome/Current Status: Ongoing litigation.

• Case 2:

  • Plaintiff(s): Unified Patents LLC
  • Defendant(s): Not specified (Petitioner is Unified Patents, implying they are challenging the patent).
  • Jurisdiction: Patent Trial and Appeal Board (PTAB)
  • Case Number: IPR2025-01595
  • Filing Date: Not specified in the provided information, but the case was filed in 2025.
  • Outcome/Current Status: Not Instituted - Procedural.

Proceedings overview

There is one AIA trial proceeding on file for US patent 8923754. This proceeding resulted in a discretionary denial of institution, meaning no claims were invalidated. This gives a defendant a posture where the patent's claims remain untested by an AIA trial to date, but the specific grounds raised in the petition were not deemed sufficient for institution.

IPR2025-01595 — [[[Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.), Ltd.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.) et al.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.%20et%20al.) v. Massively Broadband LLC

• Type: Inter Partes Review
• Filed: 2025-09-29
• Status: Discretionary Denial. The petition was not instituted for a full trial.
• Judge panel: The panel included Administrative Patent Judges David C. McKone, Deborah C. Katz, and Brian J. Emch.
• Petition grounds: Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. challenged claims 1-21 of US8923754. The grounds for unpatentability were based on obviousness under 35 U.S.C. § 103, citing various combinations of prior art, including U.S. Patent Application Publication No. 2005/0164629 to Rappaport, U.S. Patent No. 6,654,586 to Rappaport, U.S. Patent No. 6,553,073 to Batni et al., and U.S. Patent No. 6,009,088 to Betts et al.
• Institution decision: Denied on 2026-03-29. The panel exercised its discretion to deny institution under 35 U.S.C. § 314(a) based on considerations outlined in Fintiv factors. Specifically, the Board found that a parallel district court proceeding (2:25-cv-00608 in the Eastern District of Texas) involving the same parties and patent weighed against institution. The district court trial was scheduled for 2026-10-06, which the Board determined would likely conclude before a Final Written Decision in the IPR.
• Final Written Decision (if issued): Not issued, as institution was denied.
• Settlement / termination: Not applicable, as institution was denied.
• Appeal: Not applicable, as institution was denied.
• Defensive value: The discretionary denial means the PTAB did not reach the merits of the obviousness challenge. While the claims themselves were not reviewed for patentability, the petitioner (Samsung) may face some form of estoppel from re-litigating the same or substantially the same grounds. For other defendants, the specific prior art and arguments raised by Samsung in this petition may still be viable in a new IPR, provided they can avoid a similar discretionary denial based on parallel litigation.

Strategic summary

All claims (1-21) of US8923754 are currently UNTESTED by any PTAB invalidation decision. The sole IPR filed, IPR2025-01595, resulted in a discretionary denial of institution rather than a decision on the merits of patentability. This means no claims were canceled or sustained by the PTAB in a final written decision.

Regarding the estoppel landscape, since the institution of IPR2025-01595 was denied under Fintiv, the statutory estoppel provision of 35 U.S.C. § 315(e)(2) generally does not apply to the petitioner (Samsung). This is because § 315(e)(2) applies only to grounds "raised or reasonably could have been raised during that inter partes review" that result in a final written decision. However, the petitioner might still be precluded under common law principles or from filing a "substantially the same" petition again. For other potential defendants, the prior art raised by Samsung in IPR2025-01595 (including Rappaport '629, Rappaport '586, Batni '073, and Betts '088) is still available for use in future challenges against US8923754, assuming they are not in a parallel district court proceeding that would trigger another Fintiv denial.

The patent owner, Massively Broadband LLC, successfully defended against this IPR at the institution phase. There is no pattern of aggressive PTAB appeals by the patent owner, nor is there evidence of involvement from a defensive aggregator like Unified Patents in the proceedings listed. Unified Patents was the petitioner in PTAB case IPR2025-01595, however, the petitioner is listed as Samsung Electronics Co., Ltd. et al.

Recommended next steps

• As there are no claims invalidated by PTAB, all claims of US8923754 remain presumptively valid.
• Any defendant facing assertion of this patent should thoroughly review the institution decision for IPR2025-01595 to understand the specific reasons for the Fintiv discretionary denial. This will help inform whether a new IPR petition would face similar procedural hurdles. The Institution Decision can be found on the USPTO PTAB E2E system under IPR2025-01595, dated 2026-03-29.
• While the specific grounds raised in IPR2025-01595 were not judged on their merits, the prior art presented by Samsung could still be highly relevant for a new IPR petition or for invalidity arguments in district court, particularly if a parallel district court case is not present or not as far along as the one that led to the Fintiv denial in IPR2025-01595.## Proceedings overview
  There is one AIA trial proceeding on file for US patent 8923754. This proceeding resulted in a discretionary denial of institution, meaning no claims were invalidated. This gives a defendant a posture where the patent's claims remain untested by an AIA trial to date, but the specific grounds raised in the petition were not deemed sufficient for institution, or institution was denied for procedural reasons (such as parallel litigation).

IPR2025-01595 — Samsung Electronics Co., Ltd. et al. v. Massively Broadband LLC

• Type: Inter Partes Review
• Filed: 2025-09-29
• Status: Discretionary Denial. The petition was not instituted for a full trial.
• Judge panel: The panel included Administrative Patent Judges David C. McKone, Deborah C. Katz, and Brian J. Emch.
• Petition grounds: Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. challenged claims 1-21 of US8923754. The grounds for unpatentability were based on obviousness under 35 U.S.C. § 103, citing various combinations of prior art, including U.S. Patent Application Publication No. 2005/0164629 to Rappaport, U.S. Patent No. 6,654,586 to Rappaport, U.S. Patent No. 6,553,073 to Batni et al., and U.S. Patent No. 6,009,088 to Betts et al.
• Institution decision: Denied on 2026-03-29. The panel exercised its discretion to deny institution under 35 U.S.C. § 314(a) based on considerations outlined in Fintiv factors. Specifically, the Board found that a parallel district court proceeding (2:25-cv-00608 in the Eastern District of Texas) involving the same parties and patent weighed against institution. The district court trial was scheduled for 2026-10-06, which the Board determined would likely conclude before a Final Written Decision in the IPR.
• Final Written Decision (if issued): Not issued, as institution was denied.
• Settlement / termination: Not applicable, as institution was denied.
• Appeal: Not applicable, as institution was denied.
• Defensive value: The discretionary denial means the PTAB did not reach the merits of the obviousness challenge. While the claims themselves were not reviewed for patentability, the petitioner (Samsung) may face some form of estoppel from re-litigating the same or substantially the same grounds. For other defendants, the specific prior art and arguments raised by Samsung in this petition may still be viable in a new IPR, provided they can avoid a similar discretionary denial based on parallel litigation.

Strategic summary

All claims (1-21) of US8923754 are currently UNTESTED by any PTAB invalidation decision. The sole IPR filed, IPR2025-01595, resulted in a discretionary denial of institution rather than a decision on the merits of patentability. This means no claims were canceled or sustained by the PTAB in a final written decision.

Regarding the estoppel landscape, since the institution of IPR2025-01595 was denied under Fintiv, the statutory estoppel provision of 35 U.S.C. § 315(e)(2) generally does not apply to the petitioner (Samsung). This is because § 315(e)(2) applies only to grounds "raised or reasonably could have been raised during that inter partes review" that result in a final written decision. However, the petitioner might still be precluded under common law principles or from filing a "substantially the same" petition again. For other potential defendants, the prior art raised by Samsung in IPR2025-01595 (including Rappaport '629, Rappaport '586, Batni '073, and Betts '088) is still available for use in future challenges against US8923754, assuming they are not in a parallel district court proceeding that would trigger another Fintiv denial.

The patent owner, Massively Broadband LLC, successfully defended against this IPR at the institution phase. There is no pattern of aggressive PTAB appeals by the patent owner, nor is there evidence of involvement from a defensive aggregator like Unified Patents in the proceedings listed. Unified Patents was the petitioner in PTAB case IPR2025-01595, however, the petitioner is listed as Samsung Electronics Co., Ltd. et al.

Recommended next steps

• As there are no claims invalidated by PTAB, all claims of US8923754 remain presumptively valid.
• Any defendant facing assertion of this patent should thoroughly review the institution decision for IPR2025-01595 to understand the specific reasons for the Fintiv discretionary denial. This will help inform whether a new IPR petition would face similar procedural hurdles. The Institution Decision can be found on the USPTO PTAB E2E system under IPR2025-01595, dated 2026-03-29.
• While the specific grounds raised in IPR2025-01595 were not judged on their merits, the prior art presented by Samsung could still be highly relevant for a new IPR petition or for invalidity arguments in district court, particularly if a parallel district court case is not present or not as far along as the one that led to the Fintiv denial in IPR2025-01595.

Inventors

The named inventor for US patent 8923754 is:

• Theodore S. Rappaport
  • Employer at the time of filing: The patent application was filed by Theodore S. Rappaport as an "Individual," indicating he was likely the original owner of the patent rights at the time of filing and issuance, rather than being employed by a specific entity that immediately took ownership. This is consistent with the USPTO assignment record where Theodore S. Rappaport is the assignor.

Original assignee

The entity named on the issued patent (US8923754B2) appears to be Theodore S. Rappaport, as an individual. The Google Patents entry states "Original Assignee: Individual" and "Application filed by Individual". The assignment record confirms that Theodore S. Rappaport later assigned the patent to Massively Broadband LLC.

Information regarding whether Theodore S. Rappaport, as an individual, shipped a product embodying the claims is not readily available. Massively Broadband LLC is the current assignee. Information regarding Massively Broadband LLC's primary line of business or current status (operating, acquired, dissolved, in bankruptcy) would require further research beyond patent records, such as corporate filings or business databases, which are not within the scope of this tool's direct access. However, given the context of patent litigation for this patent (a case filed by Massively Broadband LLC in Texas Eastern District Court, and Unified Patents challenging it at PTAB), it suggests Massively Broadband LLC is involved in patent assertion.

Assignment timeline

• 2024-12-23 (executed) / recorded 2024-12-31 — Reel 041834/0628
  • Conveyance: Assignment
  • Assignor: RAPPAPORT, THEODORE S
  • Assignee: MASSIVELY BROADBAND LLC
  • Correspondent: ROBERT E. HARBIN, III, ESQ.; HARBIN LAW, LLC; 400 CONSTITUTION AVENUE, SUITE 213; LOUISVILLE, GA 30434. This correspondent's name has not recurred in other tracked patents on this site.
  • Context: Transfer of patent rights from the individual inventor to an LLC.

Timeline diagram

timeline
    title Ownership of US 8923754
    2012 : Filed by Individual Inventor
    2014 : Issued
    2024 : Assigned to Massively Broadband LLC

NPE / troll-pattern signals

1. Shell-entity transfer — present

   • Cite: Reel 041834/0628, executed 2024-12-23 / recorded 2024-12-31. The transfer is from an individual inventor to "Massively Broadband LLC," which, without further evidence of product sales, suggests a potential licensing-only entity, aligning with the "IP / Patents / Licensing / Holdings / Ventures" naming pattern often associated with shell entities.

2. Known asserter in the chain — unclear

   • While Massively Broadband LLC is involved in litigation concerning this patent, it is not explicitly listed on widely known public NPE lists such as those maintained by Acacia Research Corp, Marathon Patent Group, or Intellectual Ventures based on the provided data. Further research beyond patent records would be needed to definitively categorize it. However, the litigation activity (Texas Eastern District Court case 2:25-cv-00608 and PTAB IPR2025-01595) strongly suggests an assertion-focused entity.

3. Repeat correspondent across the chain — not present

   • Cite: Reel 041834/0628, Correspondent: ROBERT E. HARBIN, III, ESQ.; HARBIN LAW, LLC. This correspondent appears only once in the assignment chain for this patent and has not been flagged as a repeat player in other tracked patents on this site.

4. Cascading transfers — not present

   • There is only one recorded assignment in the chain from the inventor to Massively Broadband LLC, not multiple consecutive transfers.

5. Pre-litigation transfer — unclear

   • The assignment to Massively Broadband LLC was executed on 2024-12-23 and recorded on 2024-12-31 (Reel 041834/0628). The first litigation case in the Texas Eastern District Court (2:25-cv-00608) was filed in 2025, which is within 6 months of the assignment. This timing could indicate a pre-litigation transfer; however, without a more precise filing date for the Texas case, it's difficult to confirm definitively. Given the "2025" filing year, it falls within the general 6-month window.

6. Bankruptcy fire-sale — not present

   • There is no indication in the patent records or the provided context that the patent originated from a bankruptcy sale.

7. Privateering — not present

   • There is no information to suggest this patent was transferred by an operating company to an NPE for assertion on its behalf.

8. Defensive aggregator (anti-NPE) — not present

   • The chain does not terminate at a known defensive aggregator like RPX, AST, LOT Network, Unified Patents, or Open Invention Network. Instead, the current assignee, Massively Broadband LLC, is acting as a plaintiff in a litigation case, indicating an assertive stance.

Verdict

NPE — moderate confidence

This verdict is driven by the transfer from an individual inventor to "Massively Broadband LLC" (Reel 041834/0628, executed 2024-12-23 / recorded 2024-12-31) combined with active litigation in the Texas Eastern District Court (Case 2:25-cv-00608 filed in 2025) and a PTAB challenge (IPR2025-01595, filed in 2025 by Unified Patents). The timing of the assignment relative to the litigation (within 6 months) further strengthens the indication of an assertion-focused entity.

For verification, see the USPTO Patent Assignment Search results for US8923754: https://assignmentcenter.uspto.gov/

To identify the most relevant prior art for US patent 8923754, I will analyze the patent citations listed within the patent itself. The patent document provides a "Prior Art Keywords" section and a "Description" section that discusses background information and references other patents and publications. I will focus on the cited patents and patent applications as the primary source of prior art.

Here's an analysis of the most relevant prior art cited within US8923754:

1. U.S. Pat. No. 6,505,032 (McCorkle et. al. of Xtreme Spectrum, Inc.)

• Full Citation: U.S. Pat. No. 6,505,032
• Publication/Filing Date: The patent application 20030096578, associated with this patent, was published on May 22, 2003. The patent itself (U.S. Pat. No. 6,505,032) is explicitly incorporated by reference. The priority date for US8923754 is August 22, 2003.
• Brief Description: This patent (and its related application) pertains to Ultrawideband (UWB) technologies, which are foundational to the subject matter of US8923754. The cited patent likely describes fundamental UWB transmission techniques and systems.
• Potential Anticipation (35 U.S.C. § 102): This reference establishes the state of the art concerning UWB communication itself, including its high data rates and potential for personal area networks. It would likely anticipate any broad claims in US8923754 that merely describe the use of UWB for high-speed data transmission or forming piconets, without the additional "intelligent" repeater functionalities (e.g., filtering, prioritization, security, wired/wireless integration) claimed in US8923754. For instance, any claim simply stating a UWB transceiver is used in a network might be anticipated if 6,505,032 teaches general UWB networking.

2. US patent application 20030096578 (McCorkle, et. al. of Xtreme Spectrum, Inc.)

• Full Citation: US patent application 20030096578
• Publication/Filing Date: Published May 22, 2003.
• Brief Description: Similar to U.S. Pat. No. 6,505,032, this patent application further details ultrawideband technologies. It is explicitly incorporated by reference in US8923754, indicating its direct relevance to the understanding of UWB.
• Potential Anticipation (35 U.S.C. § 102): As a publication predating the priority date of US8923754, it serves as prior art for UWB communication principles. It would likely anticipate claims that generally describe UWB system components or basic UWB network configurations, if those aspects are not combined with the novel "intelligent" repeater features of US8923754.

3. "Recent Applications of Ultra Wideband Radar and Communications Systems" by Robert Fontana of Multispectral Solutions, Inc.

• Full Citation: "Recent Applications of Ultra Wideband Radar and Communications Systems", by Robert Fontana of Multispectral Solutions, Inc.
• Publication/Filing Date: The patent does not explicitly provide a publication date for this paper, but it is cited in the context of "Ultrawideband technologies are about to become mainstream," implying it predates the filing of US8923754.
• Brief Description: This publication likely provides an overview of UWB's capabilities and emerging applications, especially concerning radar and communication systems.
• Potential Anticipation (35 U.S.C. § 102): This would be relevant for establishing the general knowledge and foreseen applications of UWB technology at the time of US8923754's invention. If it discusses the need for range extension in UWB networks, it could potentially anticipate claims in US8923754 related to merely extending UWB range without the specific "intelligent" processing and filtering capabilities.

4. IEEE 802.15.3 MAC operation (Standards body activities)

• Full Citation: Not a single patent or publication, but refers to the IEEE 802.15.3 standards bodies' activities.
• Publication/Filing Date: The patent states that "The IEEE 802.15.3 standards bodies have been developing Physical (PHY) and MAC layer standards for dynamic channel selection and repeater service for UWB," and "the IEEE 802.15.3 MAC operation provides for repeater service request and repeater service grant commands." This indicates ongoing work and published specifications related to UWB repeater functionality prior to US8923754.
• Brief Description: The IEEE 802.15.3 standard details MAC layer operations that include provisions for "repeater service." The patent explicitly notes that "the current repeater operation contemplated by 802.15.3 and proposed UWB devices is based on the assumption that a single chip can perform necessary repeater functions."
• Potential Anticipation (35 U.S.C. § 102): This directly anticipates the concept of UWB repeater service. Claims in US8923754 that broadly cover a UWB repeater providing range extension without specifying the intelligent data processing, filtering, or security aspects might be anticipated by the IEEE 802.15.3 standards. The patent argues that its invention offers "advantages, flexibility, and improved performance and security than the currently proposed IEEE 802.15.3 activities," indicating that the basic idea of a UWB repeater was known, but its specific "intelligent" features are what US8923754 claims as novel.

5. "Wireless Communications: Principles and Practice", 2/e, c. 2002 by Rappaport

• Full Citation: Rappaport, "Wireless Communications: Principles and Practice", 2/e, c. 2002.
• Publication/Filing Date: c. 2002.
• Brief Description: This is a general textbook on wireless communications, likely covering fundamental principles of wireless networks, including interference, propagation, and network architectures.
• Potential Anticipation (35 U.S.C. § 102): This reference would establish general knowledge in the field of wireless communications. It could potentially anticipate broad claims related to wireless network operation, interference mitigation, or basic repeater functions in a wireless context, but not specifically the UWB-specific "intelligent" repeater features.

6. US Patent Application 20020198977 (Dong-Ho Cho)

• Full Citation: US Patent Application 20020198977, Published Dec. 26, 2002, by Dong-Ho Cho.
• Publication/Filing Date: Published Dec. 26, 2002.
• Brief Description: This application is cited in the context of "future wireless networks that will allow devices in the home or office to remain connected to the outdoor wireless network through roaming systems and protocols." It likely describes roaming systems and protocols for wireless networks.
• Potential Anticipation (35 U.S.C. § 102): This reference could be relevant to claims in US8923754 that involve seamless connectivity between indoor and outdoor networks or advanced network management aspects related to roaming. However, it's less likely to directly anticipate the specific UWB-based intelligent repeater functionalities.

7. "Wireless Communications: Past Events and Future Perspectives", June 2002, IEEE Communications Magazine by Rappaport, et. al.

• Full Citation: Rappaport, et. al., "Wireless Communications: Past Events and Future Perspectives", June 2002, IEEE Communications Magazine.
• Publication/Filing Date: June 2002.
• Brief Description: This invited paper discusses the history and future outlook of wireless communications.
• Potential Anticipation (35 U.S.C. § 102): Similar to the textbook by Rappaport, this would establish general knowledge and trends in wireless communication. It might address the growing need for efficient data handling and network management in future wireless systems, but would not likely detail the specific UWB intelligent repeater solution.

8. Ultrawideband.ca Mesh Networking Explained

• Full Citation: "Ultrawideband.ca Mesh Networking Explained"
• Publication/Filing Date: Not explicitly provided, but discussed in the context of existing software that enables PCs to act as wireless repeater-cells, implying it predates US8923754.
• Brief Description: Describes software allowing PCs to act as wireless repeater-cells, specifically attempting to find internet gateways and, if none are found, serving as a repeater-cell. This operation is software-controlled and requires user installation.
• Potential Anticipation (35 U.S.C. § 102): This reference anticipates the concept of a device acting as a wireless repeater-cell, particularly in the context of mesh networking and internet gateway discovery. Claims in US8923754 related to a device acting as a wireless repeater or extending network range could be anticipated by this, especially if they do not include the specific hardware-based "intelligence" and filtering described in US8923754. The patent differentiates itself by stating its invention requires capabilities "to be embedded in network hardware, rather than provided on a CD for installation on PCs".

9. Buffalo Technology's bridge and repeater product for IEEE 802.11g wireless LAN WiFi standard

• Full Citation: Buffalo Technology announced a bridge and repeater product for IEEE 802.11g wireless LAN WiFi standard on Jun. 17, 2003 (See SmallNet Builder website page).
• Publication/Filing Date: June 17, 2003.
• Brief Description: This product provides bridge and repeater functionality for WiFi (IEEE 802.11g) networks, offering point-to-point or point-to-multi-point operation and security features like WPA, WEP, password protection, and MAC address association control. It uses a browser-based interface for configuration.
• Potential Anticipation (35 U.S.C. § 102): This is highly relevant as it describes an existing repeater product with security and configuration features for a wireless LAN standard. It could potentially anticipate claims in US8923754 that generally describe repeater functionality, security features (like MAC address filtering), or configuration interfaces, especially for wireless networks. The distinction for US8923754 lies in its application to Ultrawideband and its specific "intelligent" processing, filtering, and wired/wireless integration for UWB.

10. SMC Networks' SMC2671W 2.4 GHz 11 Mbps Wireless Ethernet Adapter

• Full Citation: SMC Networks introduced, on Jun. 6, 2003, its SMC2671W 2.4 GHz 11 Mbps Wireless Ethernet Adapter.
• Publication/Filing Date: June 6, 2003.
• Brief Description: This device serves as an interface between wired internet backbones and wireless LAN networks, offering wireless repeater capabilities for WLAN range extension. It supports Ad-Hoc and Infrastructure modes, WEP encryption, WPA, MAC Address filtering, and SSID Broadcast Disable, and is configured via web browser or Window-based software.
• Potential Anticipation (35 U.S.C. § 102): Similar to the Buffalo Technology product, this is significant prior art for wireless LAN repeaters. It anticipates claims in US8923754 related to WLAN range extension, wired-to-wireless bridging, security features, and software-based configuration. The key differentiator for US8923754 would be its specific application to Ultrawideband and its advanced data processing, filtering, and traffic intelligence.

11. Andrew Corporation's PROPAGATOR PCS/Cellular repeaters

• Full Citation: Andrew Corporation makes classic PCS/Cellular repeaters, such as the fully integrated PROPAGATOR repeater shown on its webpage.
• Publication/Filing Date: Not explicitly provided, but described as "classic" and existing.
• Brief Description: These are classic PCS/Cellular repeaters that use standard AC power and integrate all signal processing components into a single package.
• Potential Anticipation (35 U.S.C. § 102): This reference establishes the broad concept of a repeater for cellular/PCS signals. It could anticipate very general claims regarding a self-contained repeater device with signal processing, but not the specific UWB technology or the "intelligent" data handling features of US8923754.

12. Qualcomm's CDMA repeater technology

• Full Citation: Qualcomm has recently developed repeater technology for CDMA.
• Publication/Filing Date: Not explicitly provided, but described as "recently developed."
• Brief Description: This indicates the development of repeater technology specifically for CDMA wireless systems.
• Potential Anticipation (35 U.S.C. § 102): This broad statement suggests that repeater technology for different wireless standards (like CDMA) existed. Similar to the Andrew Corporation reference, it would anticipate general repeater concepts but not the unique UWB or intelligent processing features of US8923754.

Obviousness Analysis of US Patent 8923754 Under 35 U.S.C. § 103

This analysis assesses the obviousness of claims 1 and 21 of US Patent 8923754 ("Intelligent broadband relay for wireless networks") by identifying combinations of prior art references that would have rendered the claimed invention obvious to a person having ordinary skill in the art (POSITA) at the time of the invention's priority date, August 22, 2003.

Representative Claims for Analysis

• Claim 1 describes an Ultrawideband (UWB) radio transceiver/repeater device comprising RF, baseband, pipeline, memory, processor, and controller components. Key functionalities include repeating UWB signals, interfacing with wired networks, selectively filtering unwanted traffic, prioritizing data, monitoring network statistics, and reporting security breaches.
• Claim 21 describes a method of operating such a device, involving acquiring network information, setting operational modes, reading/writing control data, real-time pipeline processing, determining/updating instructions, and continuously looping these processes.

Identified Prior Art References (Pre-August 22, 2003 Priority Date)

The following prior art references, explicitly mentioned in the patent's description or identified in the PTAB challenges and verified for their priority status, are relevant:

1. McCorkle et al. (U.S. Patent No. 6,505,032): Issued January 7, 2003. Describes methods and apparatus for ultrawideband communications.
2. McCorkle et al. (U.S. Patent Application Publication No. 2003/0096578 A1): Published May 22, 2003. Describes ultrawideband technologies.
3. Rappaport (U.S. Patent No. 6,654,586): Filed August 29, 2000. Describes a high-speed wireless modem architecture for wireless communications.
4. Batni et al. (U.S. Patent No. 6,553,073): Issued April 22, 2003. Describes a wireless network repeater.
5. Betts et al. (U.S. Patent No. 6,009,088): Issued December 28, 1999. Describes a wireless local area network device having a repeater function.
6. Dong-Ho Cho (U.S. Patent Application Publication No. 2002/0198977 A1): Published December 26, 2002. Pertains to networks with roaming systems and protocols.
7. IEEE 802.15.3 standards bodies: Actively developing Physical (PHY) and MAC layer standards for dynamic channel selection and repeater service for UWB.
8. Robert X. Cringely (August 8, 2002 article, "Good News!"): Mentions a working UWB chip and the idea of mesh networking.
9. Ultrawideband.ca ("Mesh Networking Explained"): Describes software that allows a user's PC to serve as a wireless repeater-cell.
10. WiDeFi: Developed WiFi repeaters for IEEE 802.11a/b for range and bridge extension for Wireless LAN (WLAN) standards.
11. Buffalo Technology (June 17, 2003 product announcement): A bridge and repeater product for IEEE 802.11g wireless LAN WiFi standard, featuring point-to-point/multi-point operation, WiFi Protected Access (WPA), WEP, Password protection, MAC address association control, browser-based configuration, and a 10/100 Ethernet LAN connection port.
12. SMC Networks (June 6, 2003 product announcement): SMC2671W 2.4 GHz 11 Mbps Wireless Ethernet Adapter, with wireless repeater capabilities for WLAN range extension, Ad-Hoc/Infrastructure modes, WEP encryption, WPA, MAC Address filtering, and SSID Broadcast Disable, configurable via web browser or Windows-based software.
13. Rappaport ("Wireless Communications: Principles and Practice", 2nd ed., c. 2002): A foundational textbook on wireless communications.
14. Rappaport et al. ("Wireless Communications: Past Events and Future Perspectives", June 2002, IEEE Communications Magazine): Provides insights into wireless communication trends and perspectives.

Obviousness Combinations and Rationale

The independent claims of US8923754 describe an "intelligent" UWB repeater with enhanced data processing, security, and network management capabilities, as well as a method for its operation. A POSITA would have been motivated to combine known elements from the prior art to arrive at these claimed features.

Combination 1: Core UWB Repeater Functionality

• References: McCorkle et al. (US 6,505,032; US 2003/0096578 A1), Batni et al. (US 6,553,073), Betts et al. (US 6,009,088), IEEE 802.15.3 standards bodies, Cringely (2002), and Ultrawideband.ca.
• Rationale: The general concept of wireless repeaters was well-established in various wireless technologies like cellular, PCS, and WiFi (e.g., WiDeFi, Buffalo, SMC, Andrew Corp., Qualcomm). The patent itself states that UWB devices "require receivers to be within much closer propagation distances than conventional cellular/PCS and WiFi networks...Thus, repeaters will become necessary to connect devices over greater distances than the range of a single UWB device." Furthermore, the IEEE 802.15.3 standards bodies were "developing Physical (PHY) and MAC layer standards for dynamic channel selection and repeater service for UWB," indicating that the concept of UWB repeaters was already known and under development. McCorkle et al. explicitly taught UWB communication. Therefore, applying the known concept of a repeater (Batni, Betts) to the emerging UWB technology (McCorkle, IEEE 802.15.3 efforts) to extend its recognized short range would have been an obvious engineering solution for a POSITA.

Combination 2: Adding Intelligence (Filtering, Prioritization, Monitoring, Security, Hybrid Connectivity)

• References: Combination 1 (core UWB repeater) + Buffalo Technology (2003) + SMC Networks (2003) + Rappaport (US 6,654,586; "Wireless Communications" textbook) + Dong-Ho Cho (US 2002/0198977 A1).

• Rationale: The patent explicitly identifies a significant problem with anticipated UWB adoption: "UWB adoption is likely to be rapid, and just as spam e-mail occurs today...wireless UWB devices will be subject to tremendous and increased amount of interference, spam traffic, and RF interferences, as well as security attacks by rouge or spoofed message sources or unwanted transmitters." The patent further states that "the current repeater operation contemplated by 802.15.3 and proposed UWB devices is based on the assumption that a single chip can perform necessary repeater functions, but this functionality alone will not be adequate for the rapid emergence of UWB and the onslaught of wireless data that is certain to occur." This clearly articulates an unmet need and a strong motivation for a POSITA to enhance UWB repeaters with "intelligent" features.

  • Filtering Unwanted Traffic: Both Buffalo Technology and SMC Networks' repeaters, available prior to the priority date, included features like "MAC address association control" and "MAC Address filtering," respectively. These are direct forms of selectively filtering unwanted network traffic. It would be obvious to apply these known filtering techniques to a UWB repeater to combat the anticipated "spam traffic" and "unwanted transmitters" in UWB networks.
  • Prioritizing Data (QoS): The concept of Quality of Service (QoS) for prioritizing network traffic based on application requirements was well-known in wireless communications and general networking, as evidenced by Rappaport's "Wireless Communications: Principles and Practice" (c. 2002) and the work on roaming systems (Dong-Ho Cho). The patent itself acknowledges that QoS intelligence "could be identified within the MAC, PHY of standardized UWB equipment." A POSITA would be motivated to integrate known QoS mechanisms into a UWB repeater to manage high-bandwidth UWB traffic effectively, especially for applications with different real-time and bandwidth requirements (e.g., video vs. email).
  • Monitoring Network Statistics and Reporting Security Breaches: Standard network management practices included monitoring traffic and reporting anomalies or security events. The patent specifically states, "Proper repeater functionality will require the ability to detect and process such unwanted traffic... as well as to report back attempted breaches of security or interference sources to a network controller or host device." This explicit problem statement provides a clear motivation for a POSITA to incorporate known network monitoring and reporting functions into a UWB repeater.
  • Architecture (RF, baseband, pipeline, memory, processor, controller): Rappaport's "High speed wireless modem architecture for wireless communications" (US 6,654,586) describes the fundamental components for high-speed wireless communication, including RF, baseband, processor, memory, and control circuitry. The "pipeline component" performing real-time bit-by-bit or word-by-word processing for algorithms like coding and error correction represents a standard digital signal processing (DSP) implementation for high-speed data streams, a common element in broadband modems. The Buffalo and SMC repeaters, with their security and configuration features, inherently relied on a processor, memory, and controller to manage their operations. Ultrawideband.ca also demonstrated a software-controlled repeater, implying processing capabilities. It would be obvious to a POSITA to combine these known architectural elements into a single UWB repeater to achieve the desired intelligent functionalities.
  • Interfacing with Wired Networks: Buffalo Technology's repeater product (June 2003) featured a "10/100 Ethernet LAN connection port." Similarly, SMC Networks' device (June 2003) served as an "interface between the wired internet backbone and the wireless LAN network." These references clearly teach wireless repeaters that integrate with wired network components. A POSITA would readily combine this known hybrid connectivity feature into a UWB repeater to provide a versatile solution for home or office networks, as articulated in the patent: "the present invention allows for the fusing of wireless and wired network components so that they may be commingled and served by a single plant or server, within the same network."

Method Claims (Claim 21)

The method steps described in Claim 21 for operating the intelligent UWB repeater (acquiring network info, setting modes, controlling components, real-time processing, dynamic instruction updates) are the functional operations enabled by the structural components of Claim 1. Given that the components themselves and their individual functionalities (e.g., filtering, QoS, monitoring, processing data) were known in the prior art, the method of combining and coordinating these functions within a repeater, motivated by the recognized challenges of UWB networks, would also have been obvious. For instance, the configuration methods of Buffalo and SMC repeaters using web interfaces implied steps of acquiring user input (network info, desired criteria) and setting operational modes.

Conclusion

Based on the foregoing, claims 1 and 21 of US Patent 8923754 would have been obvious to a person having ordinary skill in the art by combining the teachings of:

• McCorkle et al. (US 6,505,032; US 2003/0096578 A1) for UWB communication technology.
• Batni et al. (US 6,553,073) and Betts et al. (US 6,009,088) for the general concept of wireless repeaters.
• IEEE 802.15.3 standards bodies for the active development of UWB repeater service, demonstrating a recognized need.
• Buffalo Technology (2003) and SMC Networks (2003) for demonstrating existing wireless repeaters with features such as MAC address filtering, WEP/WPA security, password protection, and wired Ethernet connectivity, all managed via software/web interfaces.
• Rappaport (US 6,654,586) for high-speed wireless modem architecture providing the underlying components for processing and control, and Rappaport's "Wireless Communications" textbook for general principles of wireless communication, including QoS.

A POSITA would have been motivated to combine these references to address the recognized limitations of UWB range and the anticipated challenges of interference, spam, and security in high-bandwidth UWB personal area networks, by integrating known "intelligent" network management, security, and hybrid wired/wireless connectivity features into UWB repeater devices. This combination represents a predictable use of known technologies to solve an identified problem in a new, but analogous, context (UWB).