Hytto Pte Ltd v. Shenzhen Union Cargo Network Technology Co Ltd

I. Executive Summary and Procedural Information

• Parties & Counsel:

  • Plaintiff: Hytto Pte. Ltd. (d/b/a "Lovense") (Singaporean)
  • Defendant: Shenzhen Union Cargo Network Technology Co., Ltd. (Chinese); Union Cargo Industry Group Co., Limited (Hong Kong); UC Global Trade Inc. (Californian); Sunrise Global Chain, Inc. (Californian); TLA Acquisition Corp. (Delaware); CNVCOM LLC (Delaware)
  • Plaintiff's Counsel: Bayes PLLC; Scheef & Stone, LLP

• Case Identification: 2:26-cv-00179, E.D. Tex., 03/03/2026

• Venue Allegations: Plaintiff alleges venue is proper because each Defendant places the accused products into the stream of commerce, which foreseeably brings them to consumers in Texas through interactive e-commerce websites and distributors.

• Core Dispute: Plaintiff alleges that Defendants' "Honey Play Box" brand of adult toys and the associated mobile application infringe six U.S. patents related to remote-controlled, interactive, and wearable sexual stimulation devices.

• Technical Context: The technology domain is often referred to as "connected intimacy" or "teledildonics," involving electronic adult toys that can be controlled remotely via smartphone applications over Bluetooth and internet-based connections.

• Key Procedural History: The complaint alleges that Plaintiff sent a cease-and-desist letter, including claim charts, to Defendants on September 16, 2025, providing notice of alleged infringement for four of the six patents-in-suit. This event is cited as a basis for willfulness allegations.

Case Timeline

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

U.S. Patent No. 9,889,064 - "Sexual stimulation device with an oscillator feature," Issued Feb. 13, 2018

The Invention Explained

• Problem Addressed: The patent's background section notes that while many sexual stimulation devices exist, there is a need for a device that effectively targets specific areas, such as the G-spot, with a pulsating or throbbing motion, as distinct from simple vibration '064 Patent, col. 1:41-47
• The Patented Solution: The invention is a device with an oscillating motor that drives a motor head in a linear, up-and-down motion perpendicular to the motor's axis '064 Patent, col. 2:8-13 This mechanism is designed to pulsate an "isolated point" on the device's stimulation end while the surrounding area remains relatively stationary, creating a targeted throbbing sensation rather than a general vibration '064 Patent, claim 1
• Technical Importance: This approach provided a method for creating a different type of tactile stimulation (pulsation) specifically aimed at internal anatomical features, which the patent presents as an improvement over conventional vibrators that use eccentric rotating mass motors '064 Patent, col. 2:15-20

Key Claims at a Glance

The complaint asserts infringement of independent claims 1 and 8 Compl. ¶31

• Independent Claim 1 requires:

  • An elongated member with a handle and a stimulation end.
  • The stimulation end has a "stimulation point" aligned with a "silicone embedded connector."
  • A motor connected to a motor head and attachment, which is in turn connected to the silicone connector.
  • The motor head and attachment move perpendicularly to the motor's longitudinal axis to "pulsate said stimulation point...in an isolated manner" while "maintaining said stimulation end stationary."

• Independent Claim 8 requires:

  • An elongated member with a motor connected to a motor head.
  • The motor head has a motor head attachment and a silicone embedded connector.
  • The motor is configured to move the attachment and connector "linearly in an up-and-down direction" perpendicular to the motor's longitudinal axis.
  • This movement pulsates the components "to move an isolated point" of the elongated member.

U.S. Patent No. 11,452,669 - "Wearable Massager," Issued Sep. 27, 2022

The Invention Explained

• Problem Addressed: The patent background identifies a need for massaging devices that can be used in a "discreet or efficient manner" without the limitations of conventional, hand-held devices '669 Patent, col. 1:20-24
• The Patented Solution: The patent describes a two-part wearable massager designed to be held in place by an article of clothing, such as underpants '669 Patent, col. 4:3-10 The system uses a main body containing the vibration motor and an "interior attachment member" (e.g., a magnet) and a separate "exterior attachment member" (e.g., another magnet) '669 Patent, col. 2:35-41 The clothing is held between the two magnetic members, securing the device for hands-free use '669 Patent, col. 2:59-62 The main body features a shell with a specific shape, including a convex section for body contact and a flat bottom portion with a "protruding border element" to help grip the clothing '669 Patent, claim 5
• Technical Importance: This magnetic attachment system enables a personal massager to be worn discreetly and used hands-free, a key innovation for the "wearable" technology market segment '669 Patent, col. 4:15-18

Key Claims at a Glance

The complaint asserts infringement of independent claims 1 and 5 Compl. ¶41

• Independent Claim 1 requires:

  • A main body section with a shell.
  • The shell's bottom has a "flat section with a protruding border element" that forms a "gap...configured to retain a portion of clothing material."
  • The shell encases vibrational components, an "interior attachment member," and a PCB.
  • An "exterior attachment member" that connects to the interior member to secure the device.

• Independent Claim 5 requires:

  • A main body section with a shell having a "convex section" opposite a "bottom portion having a flat section."
  • The flat section contains an "interior magnet member" and a "protruding border element" forming a gap.
  • A separate "connector" with a flat portion and an "exterior magnet member" configured to attract the interior magnet.

U.S. Patent No. 12,193,987 - "System, Apparatus, and Method for Controlling Devices Based on Sound," Issued Jan. 14, 2025

• Technology Synopsis: The patent describes a system where a user's device (e.g., a smartphone) receives audio data, such as music or ambient sound, and identifies specific parameters of that audio '987 Patent, abstract The system then converts these audio parameters into "action signals" that control the motor or heater of a connected accessory, such as an adult toy, causing its actions to synchronize with the sound '987 Patent, abstract
• Asserted Claims: Independent claims 1, 15, and 16 Compl. ¶51
• Accused Features: The complaint alleges that the Honey Play Box mobile application and associated products infringe by offering features that synchronize the toy's vibrations to music or ambient sounds Compl. ¶2 Compl. ¶7

U.S. Patent No. 12,201,577 - "Reciprocating Stimulation Device," Issued Jan. 21, 2025

• Technology Synopsis: This patent details a mechanical system for producing a reciprocating (i.e., thrusting) motion in a stimulation device '577 Patent, abstract The invention uses a rotating motor in a handle portion that drives a screw; a nut coupled to the stimulation body travels along the rotating screw, converting the motor's rotation into linear, back-and-forth motion '577 Patent, abstract
• Asserted Claims: Independent claim 1 Compl. ¶61
• Accused Features: The complaint accuses Defendants' products with thrusting functionality, such as the "Joi Thrust 2," of infringement Compl. ¶2

U.S. Patent No. 12,318,340 - "Control Link for Adult Toy Operation and Method for Using the Same," Issued Jun. 3, 2025

• Technology Synopsis: The invention covers a system for generating a "control link" (e.g., a URL) that the owner of a sexual stimulation device can post to a social platform or website '340 Patent, abstract A remote user can click this link to receive an interface for controlling the device over a network, enabling interactive online experiences '340 Patent, abstract
• Asserted Claims: Independent claims 1, 10, and 19 Compl. ¶71
• Accused Features: The Honey Play Box application's functionality for long-distance and shared control is alleged to infringe this patent Compl. ¶2 Compl. ¶5

U.S. Patent No. 12,350,221 - "Reciprocating Stimulation Device," Issued Jul. 8, 2025

• Technology Synopsis: Similar to the '577 patent, this invention describes a reciprocating stimulation device composed of a proximal part (handle) and a distal part that moves back and forth '221 Patent, abstract A drive component generates the motion, and a stretchable tube connects the two parts, allowing for the reciprocating movement while maintaining a continuous external body '221 Patent, abstract
• Asserted Claims: Independent claims 1 and 8 Compl. ¶81
• Accused Features: The complaint targets Defendants' products with thrusting or reciprocating features, such as the "Joi Thrust 2" Compl. ¶2

III. The Accused Instrumentality

Product Identification

• The accused instrumentalities are a range of "Honey Play Box" branded vibrators, stimulators, and massagers (including "Pearl," "Ryder," "Oly 2," and "Joi Thrust 2"), as well as the "Honey Play Box mobile application" Compl. ¶2

Functionality and Market Context

• The complaint characterizes the accused products as part of a "technological ecosystem" that mirrors Plaintiff's own, offering remote control via a smartphone application over both short-range (Bluetooth) and long-distance (internet) connections Compl. ¶5 Compl. ¶7 Alleged functionalities include synchronizing the toy's movements to music and making it responsive to sounds Compl. ¶7 The complaint provides a photograph of a business location front desk showing "UC Global," "Union Cargo," and "Honey Play Box" logos together, which is presented as evidence that the various named defendants are part of a single coordinated enterprise Compl. ¶18

IV. Analysis of Infringement Allegations

The complaint states that exemplary claim charts for each asserted patent are attached as Exhibits A through F Compl. ¶32 Compl. ¶42 Compl. ¶52 Compl. ¶62 Compl. ¶72 Compl. ¶82 However, these exhibits were not filed with the complaint document. The analysis below is therefore based on the narrative infringement theories presented in the body of the complaint.

'064 Patent Infringement Allegations

The complaint alleges that the Accused Products directly infringe claims 1 and 8 of the '064 Patent Compl. ¶31 The infringement theory suggests that certain Honey Play Box products incorporate a mechanism that produces a targeted, pulsating motion at a specific "stimulation point," rather than a conventional, generalized vibration. This alleged functionality would map to the claim elements requiring an "isolated" pulsation caused by a motor head moving linearly and perpendicularly to the motor's axis.

• Identified Points of Contention:
  • Scope Questions: A central question may be whether the motion generated by the accused products constitutes "pulsat[ion]...in an isolated manner" while the surrounding "stimulation end" remains "stationary," as required by claim 1. A defense could argue that the accused devices produce only conventional vibrations that are stronger at one end, which may not meet the specific mechanical and functional limitations of the claim.
  • Technical Questions: The case may turn on the physical mechanism inside the accused products. The court will need to determine whether they employ a mechanism that moves a motor head linearly to create pulsation, as described in the patent, or if they use a standard eccentric rotating mass (ERM) motor, which creates vibration.

'669 Patent Infringement Allegations

The complaint alleges that the Accused Products directly infringe claims 1 and 5 of the '669 Patent Compl. ¶41 The infringement theory centers on the wearable nature of certain accused products. It alleges these products use a two-part magnetic attachment system-an "interior attachment member" within the device and an "exterior attachment member" used outside of clothing-to secure the device for hands-free use, thereby reading on the patent's claims.

• Identified Points of Contention:
  • Scope Questions: A potential point of dispute is whether the structure of the accused products' shells meets the specific claim limitation of a "protruding border element...to form a gap...configured to retain a portion of clothing material." A defendant may argue that its product's shell has a different design that does not include this precise structural feature, even if it serves a similar overall purpose.
  • Technical Questions: The analysis may focus on how exactly the magnetic clasping system is implemented. Evidence will be needed to show that the accused devices comprise both an "interior" and "exterior" magnetic member that function together to attach to clothing as claimed.

V. Key Claim Terms for Construction

'064 Patent

• The Term: "pulsate said stimulation point...in an isolated manner...while maintaining said stimulation end stationary" (claim 1)
• Context and Importance: This phrase captures the core inventive concept distinguishing the claimed device from a conventional vibrator. The construction of "isolated manner" and "stationary" will be critical in determining whether the motion produced by the accused devices falls within the claim's scope.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification distinguishes the invention by its ability to "oscillate instead of vibrating" '064 Patent, col. 2:9, which could support an interpretation focused on the type of motion (linear pulsation vs. rotational vibration) rather than a strict requirement of absolute stillness in the surrounding area.
  • Evidence for a Narrower Interpretation: The plain language of "stationary" suggests a lack of movement. The abstract describes the motor head moving "in an up-and-down motion so as to move the motor head attachment and the silicone embedded connector therewith" '064 Patent, col. 2:10-13, which may support a narrower construction requiring this specific mechanical action to achieve the claimed "isolated" effect.

'669 Patent

• The Term: "a protruding border element disposed around an edge portion of the flat section to form a gap in the bottom portion configured to retain a portion of clothing material" (claim 1)
• Context and Importance: This term defines the specific structure allegedly used to grip clothing. Infringement will likely depend on whether the accused devices possess a structure that meets this detailed description. Practitioners may focus on this term because it presents a specific, falsifiable structural limitation.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The overall purpose described is to "facilitate[] the attachment of the wearable massager to an article of clothing" '669 Patent, col. 2:59-61 A party might argue for a functional interpretation where any structure creating a channel or gap for retaining fabric meets the limitation.
  • Evidence for a Narrower Interpretation: The claim language is highly specific, requiring a "protruding border element" on a "flat section." Claim 10 further specifies that this gap "prevents movement of the wearable massager with respect to the...clothing material," tying the structure to a specific anti-slip function that might narrow its interpretation.

VI. Other Allegations

• Indirect Infringement: The complaint alleges that the "Honey Play Box Defendants" induce and contribute to infringement by designing the accused products to be infringing and by "directing, promoting, and encouraging the use, sale, and/or importation" of them in ways that infringe Compl. ¶35 Compl. ¶45 These allegations are likely based on marketing materials, user manuals, and the functionality of the mobile application that instructs users on how to operate the infringing features.
• Willful Infringement: The complaint alleges willful infringement based on both pre-suit and post-suit knowledge Compl. ¶39 Compl. ¶49 For U.S. Patent Nos. 11,452,669; 12,201,577; 12,318,340; and 12,350,221, pre-suit knowledge is alleged based on a cease-and-desist letter sent on September 16, 2025 Compl. ¶3 For all six patents, knowledge from the date of the complaint's filing is also asserted Compl. ¶3

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

• A core issue will be one of technical mechanism: Do the accused products operate using the specific mechanisms claimed in the patents? For the '064 patent, this involves determining if the device produces a linear, isolated "pulsation" or a conventional vibration. For the '577 and '221 patents, it will require an analysis of whether the accused thrusting products use the claimed screw-and-nut reciprocating drive systems.

• A second key question will be one of structural scope: For the '669 patent, does the physical design of the accused wearable products include the specific "protruding border element" and "gap" structure required by the claims, or does it achieve a similar result with a non-infringing design?

• A final central question will be one of system-level functionality: For the software-focused '987 and '340 patents, the analysis will likely focus on whether the combination of the Honey Play Box hardware and mobile application, when used as intended, performs the claimed methods of synchronizing device actions to audio input and generating shareable "control links" for remote operation.