DCT

2:26-cv-00772

IoT Innovations LLC v. Panasonic Corp

Log In
Key Events
Complaint
complaint Intelligence

I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 2:26-cv-00772, E.D. Tex., 08/28/2026
  • Venue Allegations: Venue for Panasonic Corporation, a Japanese entity, is asserted under 28 U.S.C. § 1391(c)(3), which permits suing a foreign defendant in any judicial district. Venue for Panasonic Corporation of North America is based on its alleged maintenance of "established and regular places of business in this District," including a facility in The Colony, Texas.
  • Core Dispute: Plaintiff alleges that Defendant's broad portfolio of wireless-enabled devices-including ruggedized laptops, home monitoring systems, cameras, and wireless modules-infringes six patents related to various aspects of wireless communication technology.
  • Technical Context: The patents-in-suit address fundamental challenges in wireless networking, including efficient resource management, policy control for roaming devices, ad-hoc networking, and dynamic channel allocation.
  • Key Procedural History: The complaint notes that Certificates of Correction were issued for U.S. Patent Nos. 7,974,260 and 8,401,571, which may be relevant for interpreting the scope of the corrected claims. No other significant procedural events are mentioned.

Case Timeline

Date Event
2000-01-07 U.S. Patent No. 7,643,423 Priority Date
2000-06-06 U.S. Patent No. 7,075,907 Priority Date
2001-09-10 U.S. Patent No. 7,974,260 Priority Date
2002-11-05 U.S. Patent No. 8,401,571 Priority Date
2004-06-30 U.S. Patent No. 7,394,798 Priority Date
2004-12-23 U.S. Patent No. 7,346,340 Priority Date
2006-07-11 U.S. Patent No. 7,075,907 Issued
2008-03-18 U.S. Patent No. 7,346,340 Issued
2008-07-01 U.S. Patent No. 7,394,798 Issued
2010-01-05 U.S. Patent No. 7,643,423 Issued
2011-07-05 U.S. Patent No. 7,974,260 Issued
2011-11-29 U.S. Patent No. 7,974,260 Certificate of Correction Issued
2013-03-19 U.S. Patent No. 8,401,571 Issued
2014-03-11 U.S. Patent No. 8,401,571 Certificate of Correction Issued
2026-08-28 Complaint Filed

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 7,075,907 - "Method for Signalling DTX Periods and Allocation of New Channels in a Statistical Multiplexed Radio Interface"

  • Issued: July 11, 2006 Compl. ¶1 Compl. ¶34

The Invention Explained

  • Problem Addressed: In wireless packet-data systems, when a mobile station enters a period of inactivity, such as a pause in speech (a Discontinuous Transmission or "DTX" period), releasing and subsequently re-requesting a channel creates significant signaling overhead and can "clip" the beginning of the subsequent transmission, degrading quality '907 Patent, col. 1:45-2:14
  • The Patented Solution: The invention proposes a method where, upon a mobile station entering a DTX period, the network intelligently determines whether the current traffic channel can be retained or must be released, for example, based on network load. If the channel is retained, the mobile station can resume transmission without the delay and overhead of a new channel request, and can also transmit "comfort noise" parameters to maintain audio quality '907 Patent, abstract '907 Patent, col. 6:16-24
  • Technical Importance: This approach aimed to improve both spectral efficiency and perceived voice quality in emerging packet-switched voice services by reducing signaling load and minimizing transmission delays after pauses '907 Patent, col. 6:57-64

Key Claims at a Glance

  • The complaint asserts at least independent claim 1 Compl. ¶39
  • Claim 1 Elements:
    • Signalling, between a mobile station to a network, that one of the mobile station or the network is temporarily ceasing transmission of frames;
    • At the network and in response to the signalling that one of the mobile station or the network is temporarily ceasing transmission of frames, determining if a current traffic channel that is assigned to the mobile station can be retained by the mobile station, or whether the current traffic channel must be released by the mobile station; and
    • If it is determined that the current traffic channel must be released by the mobile station, signalling from the network to the mobile station to release the channel.
  • The complaint does not provide sufficient detail for analysis of dependent claims.

U.S. Patent No. 7,346,340 - "Provision of User Policy to Terminal"

  • Issued: March 18, 2008 Compl. ¶1 Compl. ¶42

The Invention Explained

  • Problem Addressed: When a mobile user roams into a "visited network," the policies applied to their data traffic (e.g., Quality of Service or QoS) are dictated by the visited network's operator. These local policies may not align with the user's home network subscription level, leading to inconsistent and potentially degraded service quality '340 Patent, col. 1:47-59
  • The Patented Solution: The invention describes a system where the visited network configures a new, specific "user policy" for the roaming terminal. This configuration is based on multiple inputs: the user's subscription profile from their home network, the roaming agreement between the operators, and the local policy of the visited network. This synthesized policy is then provided to the terminal, often during the authentication process, to govern its uplink transmissions '340 Patent, abstract '340 Patent, col. 2:5-11 '340 Patent, col. 6:64-67
  • Technical Importance: The method enables network operators to deliver a more predictable and consistent quality of service to roaming users by synchronizing the policy applied by the visited network with the policy enforced on the user's terminal '340 Patent, col. 2:39-40

Key Claims at a Glance

  • The complaint asserts at least independent claim 24 Compl. ¶47
  • Claim 24 Elements: A user terminal configured to:
    • Authenticate into a visited network, wherein the visited network is distinct from a home network of the user terminal;
    • Receive an authentication success message from the visited network, wherein the authentication success message includes a user policy which is to be used by the user terminal in the visited network, and further wherein the user policy is based at least in part on a local policy of the visited network; and
    • Apply the user policy to uplink packets which are transmitted from the user terminal.
  • The complaint does not provide sufficient detail for analysis of dependent claims.

U.S. Patent No. 7,394,798 - "Push-To Talk Over Ad-Hoc Networks"

  • Issued: July 1, 2008 Compl. ¶2 Compl. ¶50
  • Technology Synopsis: The patent addresses the high network load caused by Push-to-Talk over Cellular (PoC) services '798 Patent, col. 1:26-34 It proposes forming temporary, local "ad-hoc" networks using direct radio connections (e.g., Bluetooth, WLAN) between devices, thereby offloading traffic from the main cellular network while potentially using the cellular network for control and coordination '798 Patent, col. 2:1-9
  • Asserted Claims: At least claim 16 is asserted Compl. ¶55
  • Accused Features: The complaint accuses the HomeHawk Home Monitoring system, including the App, Access Point, and cameras, of infringement Compl. ¶49

U.S. Patent No. 7,643,423 - "Dynamic Channel Allocation In Multiple-Access Communication Systems"

  • Issued: January 5, 2010 Compl. ¶2 Compl. ¶58
  • Technology Synopsis: The patent describes a method for dynamic channel allocation in systems like GPRS/EDGE. It proposes transmitting a frame on a downlink channel that includes a "reservation set" (reserving specific uplink channels for specific users) and an "allocation set" (indicating the dynamically determined group of available uplink channels), which allows for efficient management of multiple users on a shared channel '423 Patent, abstract
  • Asserted Claims: At least claim 1 is asserted Compl. ¶63
  • Accused Features: The complaint accuses TOUGHBOOK devices, the Let's Note FV4 laptop, and Panasonic wireless connectivity modules that support IEEE 802.11ax functionality, including OFDMA and MU-MIMO Compl. ¶57

U.S. Patent No. 7,974,260 - "Method of Transmitting Time-Critical Scheduling Information Between Single Network Devices In A Wireless Network Using Slotted Point-To-Point Links"

  • Issued: July 5, 2011 Compl. ¶2 Compl. ¶66
  • Technology Synopsis: The patent addresses the need to transmit time-critical scheduling information in wireless networks like Bluetooth without the high overhead of standard protocols '260 Patent, col. 1:10-21 The solution involves defining a special data sequence with a header containing a device address and a payload containing the timing control information, which is sent in a defined "contact slot" '260 Patent, abstract
  • Asserted Claims: At least claim 5 is asserted Compl. ¶71
  • Accused Features: The complaint accuses a wide range of Panasonic products that support Bluetooth 5.0 communication, including speakers, wireless modules, cameras, TVs, and TOUGHBOOK products Compl. ¶65

U.S. Patent No. 8,401,571 - "Mobile Electronic System"

  • Issued: March 19, 2013 Compl. ¶2 Compl. ¶74
  • Technology Synopsis: The patent describes using a device's physical orientation and inclination ("posture"), as measured by a 3D magnetometer, to control how information is displayed '571 Patent, abstract This allows the device to automatically select a different presentation mode depending on how it is being held by the user '571 Patent, col. 2:15-19
  • Asserted Claims: At least claim 1 is asserted Compl. ¶79
  • Accused Features: The complaint accuses the TOUGHBOOK 40, 56, 33, and G2 devices of infringement Compl. ¶73

III. The Accused Instrumentality

Product Identification

For the lead patents ('907 and '340), the complaint identifies the "TOUGHBOOK 40, TOUGHBOOK 56, TOUGHBOOK 33 (CF-33), TOUGHBOOK G2" and other similar wireless-enabled devices Compl. ¶33 Compl. ¶41

Functionality and Market Context

The TOUGHBOOK line consists of ruggedized laptops and tablets designed for use in demanding environments. The complaint alleges these devices are "wireless-enabled" and incorporate functionalities that perform the methods claimed by the patents-in-suit Compl. ¶33 Compl. ¶41 The complaint includes a Google Street View image showing the exterior of a building with a 'Panasonic' sign, identified as a Defendant's location in The Colony, Texas, from which it allegedly sells and distributes the Accused Products Compl. p. 7 Compl. ¶26 The complaint does not provide further technical details on the specific operation of the accused software or hardware, nor does it elaborate on the products' market positioning beyond what is implied by their branding.

IV. Analysis of Infringement Allegations

'907 Patent Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
signalling, between a mobile station to a network, that one of the mobile station or the network is temporarily ceasing transmission of frames The Accused Products are alleged to signal to a network that they are temporarily ceasing transmission, for example, upon entering a Discontinuous Transmission (DTX) state. ¶39 col. 6:25-31
at the network and in response to the signalling... determining if a current traffic channel that is assigned to the mobile station can be retained by the mobile station, or whether the current traffic channel must be released by the mobile station The network, in response to the signal, is alleged to determine whether to retain or release the traffic channel assigned to the Accused Product. ¶39 col. 6:32-38
and if it is determined that the current traffic channel must be released by the mobile station, signalling from the network to the mobile station to release the channel If the network determines the channel must be released, it is alleged to signal this release command to the Accused Product. ¶39 col. 6:38-41

'340 Patent Infringement Allegations

Claim Element (from Independent Claim 24) Alleged Infringing Functionality Complaint Citation Patent Citation
authenticate into a visited network, wherein the visited network is distinct from a home network of the user terminal The Accused Products are user terminals alleged to be configured to authenticate into a visited network when roaming. ¶47 col. 5:7-11
receive an authentication success message from the visited network, wherein the authentication success message includes a user policy which is to be used by the user terminal in the visited network The Accused Products are alleged to be configured to receive an authentication success message that includes a user policy. ¶47 col. 5:62-67
and further wherein the user policy is based at least in part on a local policy of the visited network The user policy received by the Accused Products is alleged to be based, at least in part, on the local policy of the visited network. ¶47 col. 6:64-67
and apply the user policy to uplink packets which are transmitted from the user terminal The Accused Products are alleged to be configured to apply this received user policy to the uplink packets they transmit. ¶47 col. 2:37-38
  • Identified Points of Contention:
    • Evidentiary Questions: The complaint's infringement allegations for both the '907 and '340 patents are conclusory, tracking the language of the claims without providing specific evidence of the accused devices' internal operations Compl. ¶39 Compl. ¶47 A central point of contention will be whether Plaintiff can demonstrate through discovery (e.g., source code analysis, technical documentation) that the accused TOUGHBOOKs actually perform the specific "retain-or-release" determination logic of the '907 patent or receive and apply a dynamically configured user policy as required by the '340 patent.
    • Scope Questions: For the '340 patent, a dispute may arise over whether the "user policy" received by the accused devices, if any, is merely a static policy of the visited network or if it is a dynamically "configured" policy based on the combination of home network, visited network, and roaming agreement factors as described in the patent '340 Patent, col. 6:64-col. 7:4 The outcome could depend heavily on how the term "user policy...based at least in part on a local policy" is construed.

V. Key Claim Terms for Construction

  • For the '907 Patent:

    • The Term: "determining if a current traffic channel...can be retained"
    • Context and Importance: This term captures the core inventive concept of moving from an automatic release of a channel during DTX to an intelligent, network-side decision. Practitioners may focus on this term because its construction will dictate the level of complexity required for infringement. If "determining" means any decision process, infringement may be easier to allege; if it requires a specific, multi-factor analysis based on network conditions, the evidentiary bar for the Plaintiff may be higher.
    • Intrinsic Evidence for a Broader Interpretation: The plain language of claim 1 does not specify how the determination is made, which may support an interpretation that any network-side decision process meets the limitation '907 Patent, col. 9:30-33
    • Intrinsic Evidence for a Narrower Interpretation: The specification suggests the determination "preferably considers a current network requirement for uplink or downlink traffic channels" '907 Patent, col. 6:24-26 A defendant may argue this context limits the scope of "determining" to a decision that explicitly weighs network capacity or load.

  • For the '340 Patent:

    • The Term: "user policy"
    • Context and Importance: The nature of the "user policy" is central to the infringement analysis for this patent. The dispute will likely turn on whether the information provided to the terminal is a generic policy of the visited network or a specifically tailored policy as envisioned by the patent.
    • Intrinsic Evidence for a Broader Interpretation: Claim 24 requires only that the policy be "based at least in part on a local policy of the visited network," which could be read broadly to cover any policy provided by the visited network, as it would inherently reflect its local rules '340 Patent, col. 8:16-18
    • Intrinsic Evidence for a Narrower Interpretation: The detailed description explains that the access network control server "configures a user profile or user policy" based on the "subscriber profile...obtained from the home network, the roaming agreement...and/or the local policy" '340 Patent, col. 6:64-col. 7:4 This may support a narrower construction requiring the "user policy" to be a synthesized artifact of these multiple inputs, not just the local policy alone.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges both induced and contributory infringement for the '571 patent. Inducement is alleged based on Defendants advising, directing, and providing instructions (e.g., via websites, apps, or documentation) that guide end-users to use the Accused Products in an infringing manner Compl. ¶¶83-86 Contributory infringement is alleged on the basis that the Accused Products have "special features that are specially designed to be used in an infringing way" which are a material part of the invention and are not staple articles of commerce suitable for substantial non-infringing use Compl. ¶90
  • Willful Infringement: Willfulness is alleged for the '571 patent based on knowledge of the patent "at least as of the date when they were notified of the filing of this action" Compl. ¶82 The complaint further alleges willful blindness based on a purported "policy or practice of not reviewing the patents of others" Compl. ¶92

VII. Analyst's Conclusion: Key Questions for the Case

  • A primary issue will be one of evidentiary sufficiency: The complaint makes conclusory allegations across six patents and dozens of products. A key question for the litigation will be whether the Plaintiff can produce specific, non-public technical evidence-likely from source code, design documents, or network traffic analysis-to demonstrate that the accused products' internal operations precisely match the multi-step methods and configurations recited in the asserted claims.
  • A second core issue will be one of claim construction and scope: The dispute may turn on the definition of key terms like "determining" ('907 patent) and "user policy" ('340 patent). The case will explore whether these terms can be read broadly to cover the generalized functions of modern wireless devices, or if they will be narrowly construed to the specific technical implementations described in the patents, potentially creating a mismatch with the accused products' functionality.
  • Finally, for the allegations specific to the '571 patent, a central question will be one of intent: Can the Plaintiff prove the specific intent required for induced and willful infringement, particularly when the primary basis for knowledge is the filing of the lawsuit itself? The success of the contributory infringement claim will depend on proving that the accused TOUGHBOOK features have no substantial non-infringing use, a high evidentiary bar.