DCT
1:25-cv-03643
Hyper Ice Inc v. E Hung Tat Intl Group Co Ltd
Key Events
Complaint
Table of Contents
complaint Intelligence
I. Executive Summary and Procedural Information
- Parties & Counsel:
- Plaintiff: Hyper Ice, Inc. (California) and Hyperice IP Subco, LLC (Delaware)
- Defendant: E Hung Tat International Group Co., Limited d/b/a JQX-US (Hong Kong) and Jinyun Lige Technology Co., Ltd. d/b/a Jinyunligekeji (China)
- Plaintiff's Counsel: Epstein Drangel LLP
- Case Identification: 1:25-cv-03643, S.D.N.Y., 07/08/2025
- Venue Allegations: Plaintiff alleges venue is proper because Defendants conduct business in New York by offering products for sale to consumers in the state through online marketplace platforms such as Amazon.
- Core Dispute: Plaintiff alleges that Defendants' "JQX" brand of battery-powered percussive massage devices, sold on Amazon, infringes two U.S. patents related to the mechanical design and operation of such devices.
- Technical Context: The technology concerns handheld percussive massage devices, a popular category of consumer electronics used for deep muscle stimulation and pain relief.
- Key Procedural History: The asserted patents claim priority to the same 2013 provisional application and are part of a larger patent family directed at massage device technology. The complaint does not mention any prior litigation or administrative challenges involving these patents.
Case Timeline
| Date | Event |
|---|---|
| 2013-07-01 | Priority Date for '482 and '933 Patents |
| 2018-01-01 | Approximate Launch of Plaintiff's Hypervolt Products |
| 2024-01-02 | U.S. Patent No. 11,857,482 Issues |
| 2024-01-15 | Alleged Notice of '482 Patent via Virtual Marking |
| 2025-02-04 | U.S. Patent No. 12,213,933 Issues |
| 2025-02-05 | Alleged Notice of '933 Patent via Virtual Marking |
| 2025-07-08 | Complaint Filed |
II. Technology and Patent(s)-in-Suit Analysis
U.S. Patent No. 11,857,482 - "Massage Device Having Variable Stroke Length", Issued January 2, 2024
The Invention Explained
- Problem Addressed: The patent describes prior art massaging devices as suffering from deficiencies such as being bulky, generating excessive heat, being noisy, and being difficult to use for extended periods of time '482 Patent, col. 1:23-28
- The Patented Solution: The invention discloses a handheld percussive massager designed to address these issues through a specific mechanical arrangement. A key feature is a "quick-connect system" that allows a massage head to be secured to a reciprocating piston, with the system being configured to hold the head in place even while the piston is in motion '482 Patent, abstract '482 Patent, col. 9:11-19 The patent also describes a housing with separate cavities for the motor and a heat sink to improve thermal management and cooling '482 Patent, col. 6:10-42
- Technical Importance: The design aims to create a more robust, user-friendly, and durable device by reducing noise from mechanical slack and managing heat, which are common points of failure or user dissatisfaction in high-speed mechanical devices.
Key Claims at a Glance
- The complaint asserts infringement of at least independent claim 1 Compl. ¶39
- Claim 1 Elements:
- a housing;
- a piston with a proximal end and a distal end, where the distal end has a substantially cylindrical bore;
- a motor within the housing operatively connected to the piston's proximal end to cause reciprocation at a first speed;
- a drive mechanism controlling a predetermined stroke length of the piston; and
- a quick-connect system comprising the piston's distal end and a massage head, configured to secure the massage head by its proximal end being slid into the bore while the piston reciprocates at the predetermined stroke length.
- The complaint does not explicitly reserve the right to assert other claims.
U.S. Patent No. 12,213,933 - "Massage Device with a Releasable Connection for a Massaging Head", Issued February 4, 2025
The Invention Explained
- Problem Addressed: Like the '482 Patent, this patent addresses the problems of prior art devices being bulky, hot, and noisy '933 Patent, col. 1:28-33
- The Patented Solution: This invention focuses on a particular drive mechanism for converting the motor's rotary motion into the piston's linear reciprocation. It specifies a drive mechanism comprising a "flywheel" connected to the motor's output shaft and a "crank pin" extending from the flywheel to the piston '933 Patent, abstract '933 Patent, col. 10:18-24 The invention also claims a quick-connect system that allows a massage head to be inserted into or removed from the piston's bore while the piston is reciprocating '933 Patent, col. 10:9-15
- Technical Importance: By claiming a specific flywheel and crank pin assembly, the patent targets a common and efficient method for creating percussive motion, aiming to protect a core mechanical architecture for these devices.
Key Claims at a Glance
- The complaint asserts infringement of at least independent claim 1 Compl. ¶46
- Claim 1 Elements:
- a housing;
- a piston with a proximal end and a distal end, where the distal end has a bore;
- a motor operatively connected to the piston's proximal end to cause reciprocation at a first speed;
- a drive mechanism that determines a predetermined stroke length of the piston;
- a quick-connect system that allows a proximal end of a massage head to be inserted into or removed from the bore while the piston reciprocates;
- wherein the motor has a rotating output shaft; and
- wherein the drive mechanism comprises: (i) a flywheel connected to the output shaft, and (ii) a crank pin extending from the flywheel and operatively connected to the piston.
- The complaint does not explicitly reserve the right to assert other claims.
III. The Accused Instrumentality
Product Identification
- The complaint identifies the accused products as "Infringing Products under the brand name 'JQX'" Compl. ¶28 Specific product models are identified by their Amazon Standard Identification Numbers (ASINs): B0DGGKTJR5, B0DGGLVGM5, B0CGN8SYDQ, and B0CGN8FM2T Compl. ¶28
Functionality and Market Context
- The accused products are described as "battery powered percussive massagers" Compl. ¶39 Compl. ¶46 The complaint alleges that Defendants are merchants based in China and/or Hong Kong who sell these products to consumers in the U.S., including New York, through storefronts on Amazon Compl. ¶¶8-9 Compl. ¶26 Plaintiff's findings are supported by screenshots of checkout pages showing that Defendants ship the accused products to a New York address Compl. ¶31
IV. Analysis of Infringement Allegations
The complaint alleges that the accused "JQX" brand massagers literally infringe the asserted claims, or otherwise infringe under the doctrine of equivalents Compl. ¶39 Compl. ¶46 The core allegations are summarized below.
11,857,482 Patent Infringement Allegations
| Claim Element (from Independent Claim 1) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| a housing | The accused JQX percussive massagers are alleged to have a housing. | ¶39 | col. 3:35-39 |
| a piston having a proximal end and a distal end, the distal end of the piston having a substantially cylindrical bore | The accused JQX percussive massagers are alleged to have a piston with a proximal end, a distal end, and a cylindrical bore at the distal end. | ¶39 | col. 6:58-59 |
| a motor at least partially within the housing and operatively connected to the proximal end of the piston, wherein the motor is configured to cause the piston to reciprocate at a first speed | The accused JQX percussive massagers are alleged to have a motor connected to the piston that causes it to reciprocate. | ¶39 | col. 3:41-44 |
| a drive mechanism that controls a predetermined stroke length of the piston | The accused JQX percussive massagers are alleged to have a drive mechanism controlling the piston's stroke length. | ¶39 | col. 11:4-6 |
| a quick-connect system comprising the distal end of the piston and a first massaging head, wherein the quick-connect system is configured to secure the first massaging head...by a proximal end of the massaging head being slid into the bore while the piston reciprocates... | The accused JQX percussive massagers are alleged to have a quick-connect system that secures the massage head in the piston's bore during reciprocation. | ¶39 | col. 9:11-19 |
12,213,933 Patent Infringement Allegations
| Claim Element (from Independent Claim 1) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| a housing | The accused JQX percussive massagers are alleged to have a housing. | ¶46 | col. 3:45-49 |
| a piston having a proximal end and a distal end, the distal end of the piston having a bore | The accused JQX percussive massagers are alleged to have a piston with a proximal end, a distal end, and a bore at the distal end. | ¶46 | col. 4:56-62 |
| a motor operatively connected to the proximal end of the piston, wherein the motor is configured to cause the piston to reciprocate at a first speed | The accused JQX percussive massagers are alleged to have a motor connected to the piston that causes it to reciprocate. | ¶46 | col. 10:4-6 |
| a drive mechanism that determines a predetermined stroke length of the piston | The accused JQX percussive massagers are alleged to have a drive mechanism that determines the piston's stroke length. | ¶46 | col. 10:7-8 |
| a quick-connect system...wherein the quick-connect system allows a proximal end of the first massaging head to be inserted into or removed from the bore while the piston reciprocates... | The accused JQX percussive massagers are alleged to have a quick-connect system that allows for insertion or removal of the massage head while the piston is moving. | ¶46 | col. 10:9-15 |
| wherein the motor has an output shaft that is configured to rotate about a rotation axis | The accused JQX percussive massagers are alleged to have a motor with a rotating output shaft. | ¶46 | col. 4:41-42 |
| wherein the drive mechanism comprises: i. a flywheel operatively connected to the output shaft of the motor to rotate about a flywheel axis...and ii. a crank pin extending from the flywheel, the crank pin being operatively connected to the piston | The accused JQX percussive massagers are alleged to have a drive mechanism that includes a flywheel and a crank pin. | ¶46 | col. 10:18-24 |
Identified Points of Contention
- Functional Questions: A central question for both patents may be the functionality of the "quick-connect system." The '482 Patent claims a system "configured to secure" the head "while the piston reciprocates," and the '933 Patent claims a system that "allows" the head to be "inserted into or removed... while the piston reciprocates." The dispute may center on whether the accused products are merely capable of this action or are specifically designed and intended for it, and what level of proof is required to show the accused products meet these functional limitations.
- Technical Questions: For the '933 Patent, infringement will depend on the specific architecture of the accused products' drive mechanism. The analysis will require evidence that the JQX massagers employ a "flywheel" and "crank pin" as claimed, rather than an alternative mechanism for converting rotary to linear motion.
V. Key Claim Terms for Construction
The Term: "quick-connect system... configured to secure the first massaging head... while the piston reciprocates" ('482 Patent, Claim 1)
- Context and Importance: The construction of this term is critical because it defines the required performance of the connection mechanism. Whether the accused device is "configured to" perform this function, as opposed to being merely capable of it, may be a central point of dispute.
- Intrinsic Evidence for Interpretation:
- Evidence for a Broader Interpretation: The specification describes a magnetic connection that allows a user to "quickly switch massaging heads" and notes this can be done "without turning off the massaging device" '482 Patent, col. 6:53-56, which may support a construction covering any system that is physically capable of holding the head during operation.
- Evidence for a Narrower Interpretation: The term "configured to secure" might be argued to imply a specific design or structural integrity intended for this purpose, potentially requiring more than incidental capability. A defendant might argue that without specific features ensuring safe and reliable attachment during reciprocation, their device is not "configured" for this function.
The Term: "flywheel" ('933 Patent, Claim 1)
- Context and Importance: This term defines a core component of the claimed drive mechanism. The infringement analysis for the '933 Patent hinges on whether the accused products contain a structure that meets the definition of a "flywheel."
- Intrinsic Evidence for Interpretation:
- Evidence for a Broader Interpretation: The patent uses the term in the context of a "Scotch yoke" mechanism '933 Patent, col. 5:8-14, but the claim language itself is not so limited. A plaintiff may argue that "flywheel" should be given its ordinary meaning of a weighted rotating wheel used to store momentum and convert motion.
- Evidence for a Narrower Interpretation: A defendant may argue that, in the context of the patent's disclosure (including Figure 4), the term should be limited to the specific type of disk-like structure with an offset crank pin as shown, potentially excluding other forms of rotating masses or cam systems.
VI. Other Allegations
Indirect Infringement
- The complaint makes a passing allegation that Defendants are "directly and/or indirectly" infringing Compl. ¶28, but does not plead specific facts to support claims for either induced or contributory infringement, such as knowledge or intent to cause infringement by third parties.
Willful Infringement
- The complaint alleges that Defendants had knowledge of the patents and acted with deliberate or reckless disregard of Plaintiff's rights Compl. ¶42 Compl. ¶49 This allegation is based on two grounds:
- Alleged pre-suit knowledge stemming from the "fame, popularity and success of the Hyperice Products" Compl. ¶33
- Alleged post-issuance notice via Plaintiff's virtual marking of its own products, which put Defendants on notice of the '482 Patent as of January 15, 2024, and the '933 Patent as of February 5, 2025 Compl. ¶32
VII. Analyst's Conclusion: Key Questions for the Case
- A core issue will be one of functional capability vs. intended design: Does the "quick-connect system" in the accused JQX massagers meet the claim limitations requiring it to secure, insert, or remove a massage head "while the piston reciprocates"? The case may turn on whether Plaintiff can prove this is an intended function of the accused design, rather than just a physical possibility.
- A key evidentiary question will be one of technical architecture: Does the drive mechanism in the accused products utilize a "flywheel" and "crank pin" as recited in claim 1 of the '933 Patent? The outcome of this infringement allegation will likely depend on a technical teardown and analysis of the accused devices.
- A final question will concern willfulness and damages: The complaint's allegation of notice via virtual marking provides a specific timeline for when Defendants allegedly became aware of the patents. The determination of willfulness, and potential for enhanced damages, may depend on Defendants' conduct after these alleged notice dates.
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