DCT

2:26-cv-00663

Maxell Ltd v. Hisense Co Ltd

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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 2:26-cv-00663, E.D. Tex., 08/07/2026
  • Venue Allegations: Venue is alleged to be proper as to the foreign-domiciled Defendant entities under 28 U.S.C. § 1391(c)(3), which permits a defendant not resident in the United States to be sued in any judicial district.
  • Core Dispute: Plaintiff alleges that Defendant's televisions and other display devices infringe six U.S. patents related to video processing, content display functionality, power management, and mechanical assembly.
  • Technical Context: The patents-in-suit cover various technologies integral to modern smart televisions, including adaptive frame rate conversion, content hand-off from mobile devices, power-saving standby modes, and efficient mechanical design for manufacturing.
  • Key Procedural History: The complaint details a long history between the parties, alleging that a prior patent license agreement expired on December 31, 2024. This suit follows what the complaint characterizes as over a year and a half of unsuccessful renewal negotiations. Plaintiff also notes a prior lawsuit filed in 2019 that resulted in a settlement and the now-expired license agreement.

Case Timeline

Date Event
2006-05-23 U.S. Patent No. 8,107,007 Priority Date
2006-08-25 U.S. Patent No. 7,730,507 Priority Date
2007-09-26 U.S. Patent No. 11,477,508 Priority Date
2009-01-01 Hisense allegedly becomes aware of Maxell's patent portfolio
2010-06-01 U.S. Patent No. 7,730,507 Issues
2011-10-26 U.S. Patent No. 10,291,877 Priority Date
2012-01-31 U.S. Patent No. 8,107,007 Issues
2013-01-30 U.S. Patent No. 10,459,270 Priority Date
2013-11-13 U.S. Patent No. 12,526,466 Priority Date
2019-05-14 U.S. Patent No. 10,291,877 Issues
2019-10-29 U.S. Patent No. 10,459,270 Issues
2019-11-22 Maxell files prior lawsuit against Hisense
2020-12-11 Prior lawsuit is dismissed following settlement
2022-10-18 U.S. Patent No. 11,477,508 Issues
2024-12-24 Maxell sends license renewal notice letter to Hisense
2024-12-31 Patent License Agreement between parties expires
2026-01-13 U.S. Patent No. 12,526,466 Issues
2026-08-07 Complaint Filing Date

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

U.S. Patent No. 8,107,007 - "Image Processing Apparatus"

  • Issued: January 31, 2012

The Invention Explained

  • Problem Addressed: The patent describes conventional frame rate up-conversion techniques as being inefficient because they are applied continuously, regardless of the image state Compl. ¶58 This continuous processing is not effective for scenes with little or no motion, such as a still picture, and results in unnecessary signal processing and increased power consumption Compl. ¶58 '007 Patent, col. 1:24-40
  • The Patented Solution: The invention proposes an adaptive approach to frame rate conversion. It involves an "information acquirer" that obtains details about the input image signal, such as the amount of motion or program genre Compl. ¶56 '007 Patent, abstract Based on this information, a "frame rate converter" dynamically modifies the frame rate, applying higher rates for high-motion scenes and lower or native rates for static scenes, thereby making the conversion process more efficient and saving power Compl. ¶59 '007 Patent, col. 1:43-63 The architecture includes components like an input unit, resolution converter, motion detector, and frame rate converter working in coordination Compl. ¶62 '007 Patent, Fig. 2
  • Technical Importance: This technology allows for an optimized viewing experience tailored to different content types (e.g., sports vs. news) while simultaneously addressing the growing need for power efficiency in consumer electronics Compl. ¶63

Key Claims at a Glance

  • The complaint asserts at least claim 10, which depends on independent claim 1 Compl. ¶65
  • The essential elements of independent claim 1 include:
    • An input unit for an image signal with a predetermined frame rate.
    • An information acquirer for acquiring information concerning the input image signal, where the acquirer detects motion in the image.
    • A frame rate converter that converts the frame rate based on the acquired information.
    • A display unit for displaying the processed image.
    • The frame rate converter conducts a "first frame rate conversion processing" when a detected motion amount is at least a "first predetermined value," and a "second frame rate conversion processing" when the motion amount is at least a "second predetermined value" greater than the first.
  • The complaint reserves the right to assert additional claims Compl. ¶70

U.S. Patent No. 11,477,508 - "Portable Terminal, Information Processing Apparatus, Content Display System and Content Display Method"

  • Issued: October 18, 2022

The Invention Explained

  • Problem Addressed: The patent addresses the cumbersome process of transferring video content being viewed on a mobile terminal (like a smartphone) to a separate display device (like a TV) Compl. ¶84 Prior art methods required multiple user operations, such as manually stopping playback on the phone and then re-navigating to the same content on the TV, interrupting the viewing experience '508 Patent, col. 2:46-3:26
  • The Patented Solution: The patented system enables a mobile terminal to send a content identifier (e.g., a URL) to a display apparatus. In response, the display apparatus automatically terminates its current operation (e.g., displaying a broadcast), retrieves the identified content from the internet, and begins displaying it Compl. ¶83 '508 Patent, col. 5:45-6:65 This "hand-off" occurs without requiring user interaction with the TV's own remote controller, creating a seamless, single-operation transfer initiated from the mobile device '508 Patent, col. 3:27-42
  • Technical Importance: This innovation provides the technical foundation for the "casting" functionality that is now a central feature of modern, interconnected smart device ecosystems, allowing for smooth content transitions between personal devices and shared displays Compl. ¶89

Key Claims at a Glance

  • The complaint asserts independent claim 15 and dependent claim 16 Compl. ¶91
  • The essential elements of independent claim 15 include:
    • A display apparatus with components for receiving and processing digital broadcast signals (a digital broadcast receiver, signal separator, video/audio processors).
    • Wireless transceiver circuitry for communicating over the internet to acquire video content and to receive information from an external mobile terminal.
    • An infrared (IR) receiver for receiving signals from a remote controller.
    • A display panel.
    • A controller that controls operation modes, including transitioning from a first mode (e.g., broadcast display) to a second mode (internet video display) based on a received identifier from the mobile terminal, without input from the remote controller.
  • Dependent claim 16 adds that the information from the mobile terminal includes "state information" (e.g., playback position) that is used to control the display state on the TV, allowing playback to resume from the same point Compl. ¶97

U.S. Patent No. 7,730,507 - "Broadcast Receiving Apparatus and Starting Method Thereof"

  • Issued: June 1, 2010 Compl. ¶108
  • Technology Synopsis: The patent addresses the problem of long boot-up times in digital televisions, which was "irritating to a viewer" Compl. ¶112 '507 Patent, col. 1:63-65 The solution is a broadcast receiving apparatus with two distinct waiting conditions: a very low-power "first waiting condition" and a "second waiting condition" where critical components (like the main processor and decoder) are powered on or pre-booted to enable a quick start when the user fully powers on the display Compl. ¶113 '507 Patent, abstract
  • Asserted Claims: Claims 1, 2, and 13 Compl. ¶114
  • Accused Features: The "Power Control" settings and sleep/standby modes of Hisense televisions, which allegedly implement different power consumption states, including a low-power mode that enables the TV to receive remote-control and voice commands while the display is off Compl. ¶¶119-120

U.S. Patent No. 10,459,270 - "Display Device"

  • Issued: October 29, 2019 Compl. ¶131
  • Technology Synopsis: The patent addresses the complexity and high parts-count involved in assembling display backlights, particularly the work of fastening heat dissipation members to a back panel using nuts and bolts Compl. ¶135 '270 Patent, col. 1:38-45 The invention is a display device with a housing that has integrally formed positioning and fixing components, which hold the light source unit and its substrate, thereby reducing the number of separate parts and simplifying assembly Compl. ¶136 '270 Patent, col. 7:4-11
  • Asserted Claims: Claims 6, 10, and 12 Compl. ¶137
  • Accused Features: The physical assembly and internal structure of the LED backlight system in Hisense televisions, including the housing, light source units, circuit board strips, and reflective sheet Compl. ¶¶138-142

U.S. Patent No. 10,291,877 - "Display and Television Set"

  • Issued: May 14, 2019 Compl. ¶152
  • Technology Synopsis: The patent describes the difficulty in properly positioning and mounting a cover member over a circuit board located on the planar rear surface of a conventional display Compl. ¶156 '877 Patent, col. 1:21-34 The patented solution is a cover portion designed to cover only the specific region where the circuit board is arranged, featuring a bottom surface portion and a side surface portion that extends toward the board mounting portion, improving "mounting workability" Compl. ¶157 '877 Patent, abstract
  • Asserted Claims: Claim 1 Compl. ¶158
  • Accused Features: The mechanical design of the rear of Hisense televisions, specifically the cover portion that is positioned over the circuit board assembly Compl. ¶¶160-162

U.S. Patent No. 12,526,466 - "Broadcast Receiver and Broadcast Receiving System"

  • Issued: January 13, 2026 Compl. ¶172
  • Technology Synopsis: The patent aims to improve upon prior digital broadcast receivers by providing a better way to coordinate broadcast programming with internet-delivered content Compl. ¶176 The solution is a receiver that detects application-related information within a broadcast wave, determines if the application is executable, displays an on-screen activation prompt to the user, and then activates the application (which may display internet content) in response to a user operation '466 Patent, abstract
  • Asserted Claims: Claim 1 Compl. ¶177
  • Accused Features: Hisense televisions' alleged ability to receive and process ATSC 3.0 broadcast waves that include application-related information, and to display on-screen prompts that allow a user to launch an associated interactive application that may acquire content from the internet Compl. ¶¶178-182

III. The Accused Instrumentality

Product Identification

  • The complaint identifies the "Hisense 55U75QG" as a representative accused product, with numerous other Hisense television models listed as the "'007 Accused Products," "'508 Accused Products," etc. Compl. ¶66 Compl. ¶70 Compl. ¶99

Functionality and Market Context

  • The complaint alleges the accused products are smart televisions that incorporate a range of advanced functionalities. This includes processing various video inputs via HDMI, USB, and streaming services like Amazon Prime Compl. ¶66 A central component is the "Hi-View Engine Pro chipset," identified as a MediaTek Pentonic 800 System-on-Chip (SoC), which allegedly acquires information about the input signal to enable adaptive picture processing Compl. ¶67
  • The complaint describes specific user-facing features, such as "Filmmaker Mode" and "Enhanced Viewing," as the alleged implementation of the adaptive frame rate technology of the '007 Patent Compl. ¶68 The complaint provides a screenshot from the Hisense product page showing the "AI expert behind every frame" marketing for the Hi-View Engine Pro Compl. p. 23
  • The products are alleged to support content "casting" from a smartphone, which is central to the infringement theory for the '508 Patent Compl. ¶¶93-94 The complaint includes extensive photographic evidence purporting to show this functionality in action, with a smartphone casting "Spider-Noir" from Prime Video to a Hisense TV that was previously displaying broadcast news Compl. p. 40
  • The complaint also provides detailed teardown photographs of accused televisions, showing the internal circuit boards, backlight assemblies, and housing structures relevant to the allegations for the '507, '270, and '877 patents Compl. p. 54 Compl. p. 65

IV. Analysis of Infringement Allegations

8,107,007 Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
an input unit to which an image signal having a predetermined frame rate is input; The television accepts image signals from sources like HDMI, USB, Ethernet, and Wi-Fi, which have predetermined frame rates. ¶66 col. 2:63-65
an information acquirer for acquiring information concerning the input image signal; The "Hi-View Engine Pro chipset / processor" (MediaTek Pentonic 800 SoC) acquires information about the input image signal, such as content type. ¶67 col. 1:47-58
a frame rate converter for converting the frame rate of the input image signal on the basis of the information...acquired by the information acquirer; The "Film Maker Mode" and/or "Enhanced Viewing" functionalities allegedly leverage the processor's analysis engine to adjust the frame rate based on the detected content type. ¶68 col. 4:40-46
wherein the information acquirer detects a motion in the image... The processor's analysis engine is alleged to detect content type, which the complaint equates with detecting motion amount. ¶67; ¶68 col. 6:4-11
wherein the frame rate converter conducts a first frame rate conversion processing...when the detected motion amount is at least a first predetermined value, and conducts a second frame rate conversion processing...when the motion amount detected is at least a second predetermined value which is greater than the first predetermined value. The complaint alleges that the accused functionality results in a "dynamic and innovative frame rate conversion" by adjusting the frame rate based on detected information, implying a tiered conversion approach. ¶60; ¶68 col. 6:43-57
  • Identified Points of Contention:
    • Technical Question: The complaint alleges that adjusting the frame rate based on "content type (e.g., genre information)" satisfies the claim limitation of detecting a "motion amount" and applying tiered conversion based on "first" and "second predetermined values" of that motion amount Compl. ¶68 A central question will be what technical evidence exists that the accused "Filmmaker Mode" or "Enhanced Viewing" functionality actually measures a "motion amount" and applies multiple, distinct conversion thresholds as required by the claim, rather than simply applying a pre-set mode based on content genre metadata.
    • Scope Question: Does the accused "Hi-View Engine Pro," which is described as optimizing picture and sound based on "content," perform the specific function of an "information acquirer" that detects motion as taught in the patent?

11,477,508 Infringement Allegations

Claim Element (from Independent Claim 15) Alleged Infringing Functionality Complaint Citation Patent Citation
a digital broadcast receiver for receiving a digital broadcast signal; The Hisense 55U75QG can receive digital television broadcast signals (e.g., ATSC 3.0) via an antenna input. ¶92 col. 5:25-27
wireless transceiver circuitry for communicating over the internet to acquire video content and to receive information from the external mobile terminal; The television is equipped with a network interface (Wi-Fi) allowing it to communicate with a smartphone on the same network and access internet content. ¶93 col. 5:35-39
an infrared (IR)-ray receiver for receiving an operation signal from a remote controller; The television has an IR receiver that receives commands from its remote controller, which is distinct from the external smartphone. ¶93 col. 5:40-42
a controller that controls operation modes-including transitioning from a first operation mode...to a second operation mode...based on a received identifier from the mobile terminal...without an operation input from the remote controller The system processor allegedly controls the TV to stop displaying broadcast television content ("first operation mode") and instead retrieve and display Prime Video content from the internet ("second operation mode") upon receiving a casting command ("identifier") from a smartphone, without input from the TV's remote. ¶94 col. 5:45-65
  • Identified Points of Contention:
    • Scope Question: Will the term "operation mode" as used in the patent be construed to cover the act of switching between a broadcast television input and an internet streaming application? The defense may argue that these are simply different inputs or applications, not distinct "operation modes" in the manner contemplated by the patent's specification.
    • Technical Question: The complaint provides photographic evidence of a smartphone initiating a "cast" to the TV Compl. p. 40 A key factual question will be whether the information transmitted from the phone to the TV constitutes an "identifier for identifying a second video content" (e.g., a URL and playback state) as claimed, or if it is a more general-purpose "start casting" command that relies on software pre-installed on both devices.

V. Key Claim Terms for Construction

For U.S. Patent No. 8,107,007

  • The Term: "motion amount"
  • Context and Importance: The construction of this term is critical because claim 1 requires the frame rate conversion to be based on at least two different "predetermined values" of the "motion amount." The complaint's theory appears to equate "content type" or "genre" with "motion amount." The viability of the infringement case depends on whether this equation is permissible under the patent's own terms.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The specification states that the information concerning the image signal "may include, for example, a motion in the image, genre information...or information concerning the signal state" '007 Patent, col. 1:47-51 This language may support an argument that "motion amount" is just one example of the type of information that can be used and that "genre" is an acceptable substitute.
    • Evidence for a Narrower Interpretation: Claim 1 explicitly requires the information acquirer to "detect a motion in the image" and the frame rate converter to act based on the "detected motion amount." The specification also describes a method for detecting motion by calculating a difference between a current and preceding frame (Compl. ¶58, footnote omitted). This suggests that "motion amount" is a specific, calculated metric, not a categorical proxy like "genre."

For U.S. Patent No. 11,477,508

  • The Term: "controller that controls operation modes"
  • Context and Importance: This term is the central functional element of the claim. The infringement allegation hinges on whether the accused TV's system processor, in switching from displaying a broadcast signal to displaying a "cast" internet stream, is controlling "operation modes" as defined by the patent.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The claim language itself is general, referring to "transitioning from a first operation mode...to a second operation mode." This could be argued to encompass any functional switch on the device, such as changing from a TV tuner input to a streaming app.
    • Evidence for a Narrower Interpretation: The specification describes a specific sequence where "the controller terminates the first operation mode (broadcast display) and starts the second operation mode, retrieves the identified video content via the internet, and displays it" '508 Patent, col. 5:58-62 Practitioners may focus on whether the term requires this specific, integrated sequence of terminating, starting, retrieving, and displaying, rather than a simpler input switch.

VI. Other Allegations

  • Indirect Infringement: Plaintiff alleges both induced and contributory infringement for all asserted patents. Inducement is based on allegations that Defendant's user guides and instructions direct customers to use the accused functionalities, such as the casting feature Compl. ¶71 Compl. ¶101 Contributory infringement is based on the allegation that the accused products contain specific components (e.g., the "Hi-View Engine Pro" for the '007 patent; the casting software routines for the '508 patent) that are a material part of the inventions and are not staple articles of commerce suitable for substantial non-infringing use Compl. ¶73 Compl. ¶103
  • Willful Infringement: The complaint asserts willful infringement for all patents based on a detailed history of interactions between the parties Compl. ¶¶7-22 The allegations center on Defendant's alleged knowledge of the patents from at least December 24, 2024 (the date of a license renewal notice), and its continued infringement after a prior patent license agreement expired on December 31, 2024 Compl. ¶9 Compl. ¶75 Compl. ¶105

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

  • A primary issue will be one of willfulness and damages, driven by the extensive pre-suit history alleged in the complaint. The case will likely focus on whether Defendant's decision to continue selling products after its license expired, and during protracted negotiations, constitutes objectively reckless conduct sufficient to support enhanced damages.
  • A key evidentiary question for several patents, notably the '007 patent, will be one of functional operation: does the accused "Hi-View Engine Pro" actually perform the specific, multi-level, motion-based calculations required by the claims, or does it use a technically distinct method (e.g., genre-based presets) to achieve a similar result? The outcome will depend on technical evidence beyond what is presented in the complaint.
  • A central question of claim construction will be the scope of foundational terms. For the '508 patent, this will be whether the modern, app-based "casting" process maps onto the patent's specific definition of transitioning between "operation modes." For the '007 patent, it will be whether "content type" can be interpreted as equivalent to a quantitative "motion amount."
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