DCT

2:24-cv-04253

HydraFacial LLC v. Cartessa Aesthetics LLC

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Amended Complaint
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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 2:24-cv-04253, E.D.N.Y., 10/09/2026
  • Venue Allegations: Venue is alleged to be proper in the Eastern District of New York because Defendant resides in the district, maintains a regular and established place of business there, and has allegedly committed acts of infringement within the district.
  • Core Dispute: Plaintiff alleges that Defendant’s hydrodermabrasion systems infringe two patents related to multi-fluid skin treatment devices that combine exfoliation with the application of therapeutic solutions.
  • Technical Context: The technology at issue is in the field of aesthetic medical devices, specifically hydrodermabrasion systems that exfoliate, extract impurities, and infuse skin with treatment fluids in a single procedure.
  • Key Procedural History: The complaint references prior legal proceedings between the parties. In a previous district court case, the '052 Patent was found valid on summary judgment, a finding Plaintiff argues is res judicata. Additionally, in a U.S. International Trade Commission (ITC) investigation, an Administrative Law Judge (ALJ) found that the accused products infringed the '287 Patent, a finding the Commission affirmed. The complaint notes the Federal Circuit later vacated the ITC opinion as moot due to the patent's expiration but did not address the merits of the infringement findings.

Case Timeline

Date Event
2005-12-30 Priority Date ('287 and '052 Patents)
2017-01-24 U.S. Patent No. 9,550,052 Issued
2020-09-15 Plaintiff sends notice letter to Defendant regarding the '052 Patent
2024-01-09 U.S. Patent No. 11,865,287 Issued
2024-05-29 Plaintiff sends notice letter to Defendant regarding the '287 Patent
2024-06-07 Plaintiff initiates ITC action regarding the '287 Patent
2025-02-01 Webpage advertising SKNLAB System cited in complaint
2026-04-07 Date of ITC Commission Opinion affirming infringement of '287 Patent
2026-07-23 Date of Federal Circuit vacatur of ITC opinion as moot
2026-10-09 First Amended Complaint Filing Date

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

U.S. Patent No. 11,865,287 - “DEVICES AND METHODS FOR TREATING SKIN”

The Invention Explained

  • Problem Addressed: The patent's background describes conventional dermabrasion as messy and painful, while microdermabrasion can dry out the skin. It notes that moisturizers applied after such procedures have limited effectiveness because their active ingredients cannot easily penetrate the epidermis ’287 Patent, col. 1:47-23
  • The Patented Solution: The invention is an integrated skin treatment apparatus comprising a console, a handpiece, and a manifold or "block" system. This system is designed to hold multiple containers of different treatment fluids and selectively deliver them to the handpiece. This allows a practitioner to combine physical exfoliation and vacuum suction with the sequential application of various therapeutic solutions during a single procedure ’287 Patent, abstract ’287 Patent, col. 5:25-36
  • Technical Importance: This integrated approach sought to enhance the efficacy of aesthetic skin treatments by combining mechanical exfoliation and waste removal with simultaneous, targeted delivery of hydrating and therapeutic fluids.

Key Claims at a Glance

  • The complaint asserts independent claims 1 and 11 Compl. ¶29 Compl. ¶31
  • Independent Claim 1 recites a system for treating skin comprising:
    • A console configured to receive a first container and at least one additional container
    • A handpiece configured to contact skin tissue
    • A "block" in the console configured to selectively receive fluid from the containers and direct it to the handpiece
    • A vacuum source within the console
    • The handpiece being in fluid communication with the vacuum source via a second conduit
    • The system being configured to deliver the fluids from the different containers "sequentially"
  • Independent Claim 11 recites a skin treatment apparatus comprising:
    • A console with a "fluid control member" in communication with at least a first and second container
    • A handpiece assembly for contacting skin
    • A waste conduit for removing waste from the handpiece via a vacuum source
    • The apparatus is configured to selectively draw treatment material from the containers to the handpiece using, at least in part, the vacuum

U.S. Patent No. 9,550,052 - “CONSOLE SYSTEM FOR THE TREATMENT OF SKIN”

The Invention Explained

  • Problem Addressed: The patent addresses the shortcomings of prior art skin abrasion techniques, which are described as messy, painful, and inefficient in delivering therapeutic agents to the skin ’052 Patent, col. 1:26-50
  • The Patented Solution: The patent describes a console-based system featuring a "manifold" that is in fluid communication with multiple fluid containers. This manifold is configured to control the flow of treatment material from the containers through a supply conduit to a handpiece assembly. The system also includes a vacuum source and waste conduit to simultaneously remove waste from the skin surface while drawing treatment material to the handpiece tip ’052 Patent, abstract ’052 Patent, col. 2:15-24
  • Technical Importance: The invention focuses on a console with an integrated manifold as a central control hub for managing multiple fluids, aiming to create a more streamlined and effective hydrodermabrasion procedure.

Key Claims at a Glance

  • The complaint asserts independent claim 1 Compl. ¶44
  • Independent Claim 1 recites a system for a skin treatment procedure comprising:
    • A console including a "manifold" in fluid communication with first and second fluid containers holding liquid treatment material
    • A handpiece assembly with a tip for skin contact
    • A supply conduit connecting the manifold to the handpiece
    • The manifold is configured to control the flow of treatment material from the containers through the supply conduit
    • A vacuum source and a waste conduit
    • The system permits a user to select which treatment material is delivered
    • The system is configured to remove waste via the waste conduit while simultaneously drawing treatment material to the tip via the supply conduit

III. The Accused Instrumentality

Product Identification

  • The accused instrumentalities are the "Skinwave System" and the "SKNLAB System" Compl. ¶¶13-14

Functionality and Market Context

  • The complaint describes both the Skinwave and SKNLAB systems as competing hydrodermabrasion devices. Each includes a console configured to hold multiple containers of skin treatment fluids, a handpiece for application to a patient's skin, and a vacuum source Compl. ¶¶15-16
  • The Skinwave System is alleged to use "vacuum-suction" for "eliminating dead skin cells and impurities" Compl. ¶17 The SKNLAB System is described as a "multi-modality, aqua delivery facial platform device" that allows providers to use various handpieces in a customized protocol Compl. ¶31 The complaint includes a photograph of the SKNLAB system showing a console with an integrated screen, multiple fluid bottles, and several attached handpieces Compl. p. 5, Exhibit 8

IV. Analysis of Infringement Allegations

’287 Patent Infringement Allegations

The complaint alleges the SKNLAB System infringes at least Claim 11 of the '287 Patent.

Claim Element (from Independent Claim 11) Alleged Infringing Functionality Complaint Citation Patent Citation
a console that includes a fluid control member that is configured to be in fluid communication with at least a first container and a second container... The SKNLAB System includes a console with an internal fluid control member connected to multiple containers holding treatment solutions. A visual in the complaint shows the "Fluid Control Member" with lines running to the containers. Compl. p. 19 ¶31 col. 5:32-36
a handpiece assembly configured to contact a skin surface of a subject; The SKNLAB System includes an "AQUIS" handpiece assembly with treatment tips designed to contact a patient's skin during a facial treatment. ¶31 col. 6:49-51
a waste conduit configured to be in fluid communication with the handpiece assembly and a vacuum source to move waste away from the handpiece assembly... The SKNLAB System includes a waste conduit that connects the handpiece assembly to the console and uses suction from a vacuum source for "mechanical exfoliation and cleansing the skin." ¶31 col. 7:1-5
wherein when (i) each of the first container and the second container contains treatment material...the skin treatment apparatus is configured to selectively draw treatment material from the first container or the second container to the handpiece assembly using, at least in part, a vacuum... The SKNLAB System is alleged to use its touchscreen to allow a user to select a treatment material, which is then drawn to the handpiece by a vacuum created at the distal end of the handpiece assembly. ¶31 col. 2:36-42

’052 Patent Infringement Allegations

The complaint alleges the SKNLAB System infringes at least Claim 1 of the '052 Patent.

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
a console including a manifold, the manifold being in fluid communication with a first fluid container and at least a second fluid container... The SKNLAB System is alleged to include a console with an internal "manifold" that is in fluid communication with multiple solution containers. The complaint references an ITC determination that the system has a manifold. ¶44 col. 5:10-12
a handpiece assembly comprising a tip, the tip being configured to contact a skin surface of a subject; The system includes an "AQUIS" handpiece with a tip designed for contacting skin tissue during treatment. A photograph shows the handpiece being applied to a patient's face. Compl. p. 32 ¶44 col. 6:49-54
wherein the manifold is configured to control a flow of treatment material from the first fluid container and at least the second fluid container through the supply conduit; The SKNLAB System's manifold is alleged to control the flow of treatment solutions from the containers via buttons on a touchscreen display. ¶44 col. 6:21-25
wherein, when the vacuum source is activated and the tip contacts the skin surface...removing waste from the skin surface via the waste conduit while drawing treatment material from the...fluid container...to the tip via the supply conduit. The SKNLAB is described as an "aqua-delivery" system that uses suction to simultaneously remove waste through the waste conduit and draw treatment material from the selected container to the tip through the supply conduit. ¶44 col. 2:37-45
  • Identified Points of Contention:
    • Scope Questions: A principal dispute may involve the proper construction of the terms "block" ’287 Patent and "manifold" ’052 Patent The complaint’s reference to prior litigation where "manifold" was the central issue suggests this will be a critical point of contention Compl. ¶46 The analysis may turn on whether these terms require a single, integrated physical component as depicted in patent figures, or if they can read on a collection of valves and tubes that perform the same fluid-routing function.
    • Technical Questions: For the '287 Patent, a technical question is whether the accused systems are "configured to deliver" fluids "sequentially" as required by claim 1. This will require evidence of the systems' control logic and operational modes. For the '052 Patent, a question is whether the accused system's user selection on a touchscreen truly "control[s] a flow...through the supply conduit" in a manner that falls within the scope of the claimed "manifold."

V. Key Claim Terms for Construction

  • The Term: "manifold" ’052 Patent, Claim 1 / "block" ’287 Patent, Claim 1

  • Context and Importance: These terms appear to refer to the central fluid-routing component of the claimed inventions. The complaint states that the definition of "manifold" was the sole infringement issue in prior litigation concerning the '052 Patent, underscoring its centrality to the dispute Compl. ¶46 The construction will determine what physical or functional arrangement within the accused systems can satisfy this key limitation.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The specification describes the function of the component as controlling the flow of treatment material from containers to the handpiece ’052 Patent, col. 2:18-24 Plaintiff may argue that any component or set of components that achieves this fluid-routing function meets the definition, regardless of its specific physical form.
    • Evidence for a Narrower Interpretation: The patent figures depict the "manifold system 24" as a distinct physical housing into which the fluid containers are "releasably coupled" ’052 Patent, Fig. 1 ’052 Patent, col. 5:10-12 Defendant may argue this implies the claim requires a specific, unitary structure that both holds the containers and contains the fluid-directing pathways, rather than a distributed set of valves and tubes.

  • The Term: "sequentially" ’287 Patent, Claim 1

  • Context and Importance: This term in claim 1(f)(2) defines the manner of fluid delivery. The complaint alleges infringement by citing the accused product's "three-step process" as evidence of sequential delivery Compl. p. 17 The case may depend on whether the accused system's operation fits this temporal limitation.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: Plaintiff may argue that "sequentially" simply means "one after another," as selected by the user, consistent with the specification's description of a user selecting a treatment material to be passed through the line ’287 Patent, col. 5:25-29
    • Evidence for a Narrower Interpretation: The specification elsewhere discusses delivering materials "sequentially or simultaneously" ’287 Patent, col. 5:28-29 Defendant may argue that the choice to claim only "sequentially" was a deliberate exclusion of systems that are also capable of simultaneous delivery or blending, potentially narrowing the claim scope.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges induced infringement, stating that Defendant markets, sells, and provides instructions and information to customers, intending for them to use the Accused Systems in a manner that infringes the patents Compl. ¶37 Compl. ¶49 It also alleges contributory infringement on the basis that the Accused Systems are not staple articles of commerce and are especially adapted for use in an infringing manner Compl. ¶38 Compl. ¶50
  • Willful Infringement: Plaintiff alleges willfulness based on pre-suit and post-suit knowledge. The complaint asserts Defendant had pre-suit notice of the '052 Patent as early as September 15, 2020, and of the '287 Patent as early as May 29, 2024, via written correspondence Compl. ¶¶20-21 The complaint further alleges that Defendant continued its infringing conduct even after the ITC issued findings of infringement, which it argues constitutes reckless disregard for Plaintiff's patent rights Compl. ¶35 Compl. ¶47

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

  • A core issue will be one of definitional scope: can the terms "manifold" and "block", which the patents illustrate as an integrated housing for fluid containers, be construed to cover the internal fluid-routing architecture of the accused Skinwave and SKNLAB systems? The history of prior litigation noted in the complaint suggests this construction will be a central point of dispute.
  • A key evidentiary question will be one of operational functionality: does the control logic of the accused systems result in the "sequential" delivery of fluids as required by claim 1 of the '287 patent, or do their operational modes fall outside this claimed function? Similarly, does the user interface "control a flow" in a manner that can be attributed to the claimed "manifold" of the '052 patent?
  • A significant legal question will involve the impact of prior adjudications: what preclusive effect, if any, will the court give to the prior summary judgment ruling on the '052 patent's validity and the ITC's infringement findings regarding the '287 patent, which were vacated on other grounds? While not binding, the ITC's detailed technical analysis could be presented to the fact-finder as persuasive evidence, particularly concerning the issue of willful infringement.