DCT

4:26-cv-06208

Shenzhen Andelian Technology Co Ltd v. Vevor Store LLC

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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: Shenzhen Andelian Technology Co., Ltd. v. VEVOR STORE LLC, et al., 4:26-cv-06208, S.D. Tex., 07/31/2026
  • Venue Allegations: Venue is based on Defendant VEVOR Store allegedly maintaining a "regular and established place of business" in the district, specifically a retail and pickup location in Houston. For other U.S. Defendant Sanven, venue is also alleged based on its use of the Houston location. For the foreign defendants, venue is asserted on the basis that they are not residents of the United States and may be sued in any judicial district.
  • Core Dispute: Plaintiff alleges that Defendants' VEVOR-branded sewer inspection camera products infringe a patent related to a protective mechanism for internal transmission lines in flexible probes.
  • Technical Context: The technology addresses the durability of flexible camera probes used to inspect pipes and other inaccessible spaces, where internal wiring is susceptible to damage from bending and stretching.
  • Key Procedural History: The asserted patent claims priority to a Chinese patent application filed in late 2021. The complaint alleges the various defendants operate as a single, integrated "Common VEVOR Commercial Enterprise" for the purpose of marketing and distributing the accused products in the United States.

Case Timeline

Date Event
2021-11-26 '455 Patent Priority Date
2022-11-08 '455 Patent Issue Date
2023-01-18 VEVOR STORE INC name change from SSVEVOR LTD
2024-10-28 VEVOR STORE INC converts to VEVOR STORE LLC
2026-07-31 Complaint Filing Date

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

  • Patent Identification: U.S. Patent No. 11,493,455, "Detector and Detecting System for Protecting Transmission Line Therein", issued November 8, 2022 (the "'455 Patent").

The Invention Explained

  • Problem Addressed: The patent's background describes that conventional pipeline detectors and their internal transmission lines are often damaged when passing through bent or irregular sections of a pipe, as the flexible connection point is subjected to stress (''455 Patent, col. 1:35-40).
  • The Patented Solution: The invention proposes a protective assembly for the flexible joint of an inspection probe. It uses an "elastic member" (e.g., a spring) to allow for bending, but adds a distinct, second component: a "flexible protector" (''455 Patent, col. 2:1-12). This protector is arranged inside the elastic member, surrounding the delicate "transmission line" (the data/power cable) (''455 Patent, Fig. 5). The key is a specific length relationship: the flexible protector is longer than the elastic member's natural state but shorter than the transmission line (''455 Patent, abstract). This design allows the joint to flex and extend, but the protector acts as a strain relief tether, preventing the transmission line itself from being stretched to its breaking point (''455 Patent, col. 12:32-41).
  • Technical Importance: This solution aims to enhance the physical durability and operational lifespan of cabled inspection probes, a critical factor for tools used in harsh field environments.

Key Claims at a Glance

The complaint asserts independent claims 1 and 15 (''455 Patent, col. 13:51; ''455 Patent, col. 15:18).

  • Independent Claim 1 (a detector) includes:
    • A probe, a first connector, and a second connector.
    • An "elastic member" arranged between the first and second connectors, defining an internal passage.
    • A "transmission line" arranged in the internal passage for data transmission.
    • A "flexible protector" also arranged in the internal passage and connected between the two connectors.
    • A specific length relationship: the length of the flexible protector is greater than the natural length of the elastic member, but less than the length of the transmission line between the connectors.
    • A structural form for the flexible protector: a wire, a hollow tube, or a rope made of fibers.
  • Independent Claim 15 (a detecting system) includes:
    • A "detector" comprising all the key elements of claim 1 (probe, connectors, elastic member, transmission line, and flexible protector with the specified length relationship).
    • A "display" configured to show the data from the detector.
    • A "cable" to connect the detector's second connector to the display.

III. The Accused Instrumentality

Product Identification

The accused instrumentalities are VEVOR-branded sewer camera and pipe inspection products, including at least VEVOR models WP9602B and WP90FTR (the "Accused Products") Compl. ¶3

Functionality and Market Context

The Accused Products are described as sewer and pipe inspection systems that are sold to customers in the United States through online channels like Amazon.com and vevor.com, as well as through a physical retail and pickup location in Houston, Texas Compl. ¶3 Compl. ¶10 Compl. ¶32 The complaint alleges that these products are marketed through a coordinated enterprise involving all named defendants Compl. ¶¶15-18 Functionally, the complaint asserts that the Accused Products contain the structural elements recited in the '455 Patent, including a probe, connectors, an elastic member, an internal transmission line, and a flexible protector Compl. ¶34 No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

The complaint alleges that the Accused Products practice each limitation of at least claims 1 and 15 of the '455 Patent Compl. ¶34

'455 Patent Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
a probe The Accused Products include a probe. ¶34 col. 6:35-37
a first connector, connected to the probe The Accused Products include a first connector. ¶34 col. 6:1-3
a second connector, configured to connect to an external apparatus The Accused Products include a second connector. ¶34 col. 6:4-8
an elastic member, arranged between and connected to the first connector and the second connector, and defining an internal passage The Accused Products include an elastic member arranged between and connected to the first and second connectors and defining an internal passage. ¶34 col. 6:9-16
a transmission line for data transmission... arranged in the internal passage The Accused Products include a transmission line arranged within the internal passage. ¶34 col. 6:17-25
a flexible protector... arranged in the internal passage The Accused Products include a flexible protector arranged within the internal passage and configured to protect the transmission line and its connections. ¶35 col. 6:26-31
wherein a length of the flexible protector is greater than a length of the elastic member in its natural state, and less than a length of the transmission line... The complaint makes a blanket allegation that the Accused Products practice each limitation of claim 1, but does not provide specific facts regarding this length relationship. ¶34 col. 14:2-6
  • Identified Points of Contention:
    • Technical Questions: The core of the infringement dispute may center on the existence and function of the "flexible protector." A key question will be whether the Accused Products contain a structure separate from the "elastic member" that meets the claim's specific length-relationship requirements (i.e., longer than the elastic member but shorter than the transmission line). The complaint's allegations on this point are conclusory Compl. ¶34 Compl. ¶35, suggesting this will be a primary focus of discovery.
    • Scope Questions: The analysis may raise the question of whether any internal sheathing or structural wire within the Accused Products' flexible joint can be considered a "flexible protector" as claimed, or if the term requires a distinct component whose primary design purpose is to function as a strain-limiting tether as described in the patent's specification (''455 Patent, col. 12:32-41).

V. Key Claim Terms for Construction

  • The Term: "flexible protector"

  • Context and Importance: This term is central to the patent's point of novelty. Its construction will determine what type of internal structure in the accused device can satisfy this critical limitation, and how it must be distinguished from the "elastic member".

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The claim itself states the protector may have the "shape of a wire or a hollow tube, or... a rope consisting of a plurality of fibers" (''455 Patent, col. 14:7-10). The specification further describes it as potentially being a "sheath woven from metal wire, nylon fiber, etc." or a "flexible plastic hollow tube" (''455 Patent, col. 13:7-10). This language could support construing the term to cover a wide variety of materials and forms.
    • Evidence for a Narrower Interpretation: The patent consistently describes the protector's function as limiting the stretch of the elastic member to protect the transmission line (''455 Patent, col. 12:32-41). A party might argue that to qualify as the claimed "flexible protector", a structure must be substantially less elastic than the "elastic member" and primarily serve this specific strain-limiting function, rather than simply being another component within the assembly.

  • The Term: "elastic member"

  • Context and Importance: The definition of this term is important for distinguishing it from the "flexible protector". The infringement analysis depends on finding two separate and distinct components corresponding to these two claim terms.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The term itself is general. Dependent claim 5 recites "wherein the elastic member is a spring" (''455 Patent, col. 14:26-27), which under the doctrine of claim differentiation suggests the independent claim term "elastic member" is not limited to a spring and can encompass other structures with elastic properties.
    • Evidence for a Narrower Interpretation: The specification's embodiments exclusively depict the "elastic member" as a coil spring (e.g., element 130 in Figs. 4, 14, and 16). A party could argue that the consistent disclosure of a spring limits the scope of "elastic member" to such structures, despite the general nature of the term itself.

VI. Other Allegations

  • Indirect Infringement: The complaint does not contain a count for indirect infringement and makes no specific allegations of inducement or contributory infringement. The sole count is for direct infringement Compl. p. 13
  • Willful Infringement: The complaint alleges willful infringement based on Defendants' continued infringement after receiving knowledge of the '455 Patent via service of the complaint Compl. ¶41 This asserts a basis for willful infringement based on post-filing conduct.

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

  • A central evidentiary question will be one of technical correspondence: does discovery reveal that the accused VEVOR products contain a distinct internal component that functions as a "flexible protector", and critically, does that component exhibit the specific three-part length relationship with the "elastic member" and "transmission line" as explicitly required by the patent's independent claims?
  • A core legal issue will be one of definitional distinction: how will the court construe the terms "elastic member" and "flexible protector"? The case may turn on whether these terms are interpreted to require two structurally and functionally distinct components-one for providing flexibility and another for providing a hard stop against stretching-or if they can be read more broadly onto a single, more complex component or a standard cable sheathing within the accused devices.