DCT

2:26-cv-10671

Ecosafe Packaging LLC v. Intl Sourcing & Mfg

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Complaint
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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 2:26-cv-10671, C.D. Cal., 09/21/2026
  • Venue Allegations: Venue is alleged to be proper in the Central District of California because the Defendant is a California company headquartered in the district, has allegedly committed acts of infringement there, and maintains a regular and established place of business in the district.
  • Core Dispute: Plaintiff alleges that Defendant’s line of child-resistant containers infringes a patent related to a multi-part, push-and-turn cap assembly for child-resistant packaging.
  • Technical Context: The technology concerns child-resistant packaging, particularly recyclable metal containers designed to meet regulatory standards while preserving the contents, a field of notable importance for industries such as cannabis and pharmaceuticals.
  • Key Procedural History: The complaint references a prior lawsuit filed in 2025 by the Plaintiff against the same Defendant in the same district, asserting infringement of three related patents. The current action follows Plaintiff's attempts to amend the prior complaint to include the newly issued patent-in-suit. The complaint also details a history of pre-suit communications, including an alleged licensing inquiry from the Defendant in 2023 regarding the related patents and specific notice of the patent-in-suit in April 2026, which may be relevant to allegations of willfulness.

Case Timeline

Date Event
2018-04-12 ’538 Patent Priority Date
2023-Early-Mid Plaintiff's predecessor allegedly informs Defendant of infringement of related patents
2023-07-06 Defendant allegedly contacts Plaintiff's predecessor expressing interest in a license
2025-10-24 Plaintiff files prior lawsuit (2:25-cv-10236) against Defendant on related patents
2026-04-14 U.S. Patent No. 12,600,538 Issues
2026-04-27 Plaintiff allegedly notifies Defendant of the '538 patent and its infringement allegations
2026-05-14 Plaintiff allegedly provides Defendant with a proposed amended complaint and claim chart
2026-09-21 Complaint Filed

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

U.S. Patent No. 12,600,538 - "Child Resistant Container"

  • Patent Identification: U.S. Patent No. 12,600,538 ("the ’538 Patent"), "Child Resistant Container," issued April 14, 2026.

The Invention Explained

  • Problem Addressed: The patent's background describes a need for child-resistant packaging that overcomes the limitations of existing options Compl. ¶10 ’538 Patent, col. 1:28-34 It notes that some packaging cannot be resealed, while resealable plastic bottles may not be readily recyclable, can leach chemicals, and may not adequately preserve contents Compl. ¶10 ’538 Patent, col. 1:37-53
  • The Patented Solution: The invention is a child-resistant cap assembly, typically for a metal container, comprising an inner cap that couples to the container body (e.g., via threads) and a metal outer cap that can rotate freely around the inner cap Compl. ¶10 ’538 Patent, abstract The mechanism requires an adult to apply downward pressure to the outer cap, which causes couplers on a "plate" fixed to the outer cap to engage with corresponding couplers on the inner cap Compl. ¶10 ’538 Patent, col. 14:11-18 This engagement rotationally locks the two caps, allowing the user to twist and remove the assembly. Without this downward force, the outer cap spins independently, preventing a child from opening the container Compl. ¶10 ’538 Patent, col. 14:46-51
  • Technical Importance: The design provides a resealable, child-resistant solution using recyclable metal, addressing the market need for packaging that is both safe and capable of long-term product preservation Compl. ¶10 ’538 Patent, col. 2:7-17

Key Claims at a Glance

  • The complaint asserts independent claim 1 and dependent claims 2, 4, 6, 7, 9, 10, 14, 15, 19, 20, 21, and 22 Compl. ¶19
  • Independent Claim 1 requires:
    • A cap assembly with an inner cap and a metal outer cap.
    • A "plate" disposed between the inner and outer caps that is "rotationally and axially fixed" to the outer cap.
    • A "female coupler" attached to either the inner cap or the plate.
    • A "male coupler" attached to the other of the inner cap or the plate, configured to "optionally engage" the female coupler.
    • The top of the outer cap is configured to move between a first (disengaged) position and a second (engaged) position.
    • In the first position, the outer cap rotates relative to the inner cap.
    • In the second position, the female and male couplers engage to rotationally fix the inner and outer caps relative to one another.
  • The complaint does not explicitly reserve the right to assert additional claims, but this is standard practice.

III. The Accused Instrumentality

Product Identification

  • The complaint identifies the accused products as TPC's "CR Round Tin Jars," "Child-Resistant Tin Jars," "Child-Resistant Aluminum Tubes," "Child-Resistant Glass Tubes with Aluminum Cap," and "Child-Resistant Aluminum Jars," as well as similar containers (collectively, the "Accused Products") Compl. ¶6

Functionality and Market Context

  • The complaint alleges these products are child-resistant containers developed, designed, and sold by TPC through its website and its physical location in Long Beach, California Compl. ¶¶5-6 The products are allegedly provided to partners and distributors who then package their own goods for sale to consumers Compl. ¶24 The complaint alleges a licensee of the patent-in-suit markets a competing product for the cannabis industry, suggesting a shared market context Compl. ¶11 The complaint provides a URL to an archived webpage for Defendant's "CR Round Tin Jars," which it alleges was removed from Defendant's website Compl. ¶6, n.3

IV. Analysis of Infringement Allegations

The complaint states that a detailed claim chart is provided in an "Exhibit 2," which was not included with the filed complaint document Compl. ¶20 Therefore, the infringement theory is summarized from the complaint's narrative allegations.

The complaint alleges that the Accused Products directly infringe at least claim 1 of the ’538 patent by incorporating all of its limitations Compl. ¶¶18-20 The infringement theory appears to be based on the structural and functional characteristics of the Accused Products as push-and-turn, child-resistant containers. The names of the accused products, such as "CR Round Tin Jars" and "Child-Resistant Aluminum Jars," suggest they embody the metal construction and two-part cap mechanism that is the focus of the ’538 patent Compl. ¶6 The core of the alleged infringement would be a cap system where an outer cap freely spins until downward pressure is applied, causing it to engage an inner, threaded cap, thereby allowing the container to be opened. A URL linking to a webpage for Defendant's "Child-Resistant Tin Jar" product is provided as an example of an infringing product Compl. ¶6, n.4 The complaint does not provide further technical details on the specific mechanism of the Accused Products.

V. Key Claim Terms for Construction

  • The Term: "plate"

  • Context and Importance: Claim 1 recites "a plate disposed between the inner cap and the outer cap, wherein the plate is rotationally and axially fixed relative to the outer cap" ’538 Patent, col. 37:57-60 The presence or absence of a structurally distinct "plate" in the accused products will be a critical point in the infringement analysis. Practitioners may focus on this term because a non-infringement argument could arise if the accused products achieve the coupling function with features integrated directly into the outer cap, rather than via a separate intermediate component.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The specification discusses the plate as one possible implementation, stating that in an embodiment where the outer cap surface is to be kept smooth, a plate can be used, but also describes embodiments where indentations are formed directly on the outer cap ’538 Patent, col. 18:20-43 ’538 Patent, col. 19:5-9 This may support an argument that the term "plate" could cover an integral functional region of the outer cap.
    • Evidence for a Narrower Interpretation: Claim 1 lists the "inner cap," "metal outer cap," and "plate" as distinct elements ’538 Patent, col. 37:48-60 The patent's abstract explicitly describes "a plate disposed between the inner cap and the outer cap," and several figures, including Figure 6, depict the plate (110) as a separate component from the outer cap (102) and inner cap (105) ’538 Patent, abstract ’538 Patent, FIG. 6 This evidence supports an interpretation requiring three separate structural parts.

  • The Term: "female coupler" and "male coupler"

  • Context and Importance: Claim 1 requires a "female coupler" and a "male coupler" that are configured to "optionally engage one another" to rotationally fix the caps ’538 Patent, col. 37:61-64 The definition of these terms will determine what types of interlocking mechanical features fall within the claim's scope. The dispute will likely center on whether the specific structures in the accused products fit this gendered "male/female" language.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The specification describes the couplers in broad terms, including as "indentations," "grooves," "tongues," and "depressions" ’538 Patent, col. 14:15-18 It further states that couplers can take "various forms," suggesting the terms are not limited to a single geometry ’538 Patent, col. 15:63-64
    • Evidence for a Narrower Interpretation: The use of "male" and "female" implies a specific insertive and receptive relationship. Dependent claim 8, for example, specifies a "through opening" for the female coupler and a "portion of the male coupler... disposed through the through opening" ’538 Patent, col. 38:45-48 A party could argue this points to a narrower definition for the base terms, requiring more than just two corresponding surface features.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges both inducement and contributory infringement Compl. ¶¶22-28 The inducement theory is based on allegations that TPC, with knowledge of the patent, provides the Accused Products to customers with instructions to package goods in them for resale, thereby encouraging direct infringement Compl. ¶24 The contributory infringement claim is based on allegations that the Accused Products are a material part of the invention, are "especially made or especially adapted" for infringement, and are not staple articles of commerce with substantial non-infringing uses Compl. ¶27
  • Willful Infringement: The complaint alleges willful infringement based on TPC's alleged continued infringing conduct after receiving notice Compl. ¶30 The basis for knowledge includes alleged notification of related patents in "early-to-mid 2023," a licensing inquiry allegedly made by TPC on July 6, 2023, and specific notification of the ’538 patent on April 27, 2026 Compl. ¶¶12-13 Compl. ¶30

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

  • A central issue will be one of claim construction: does the term "plate" in Claim 1 require a physically separate component, or can it be construed to cover a functional region that is integrally formed as part of the outer cap? The outcome of this question may be dispositive of infringement for accused products with a two-piece cap design.
  • A key evidentiary question will be one of technical correspondence: do the interlocking features of the accused products' cap mechanisms possess the specific insertive/receptive relationship required by the "female coupler" and "male coupler" limitations of Claim 1, or is there a material difference in their structure and function?
  • A significant question for damages will turn on willfulness: does the defendant's alleged 2023 inquiry about licensing related patents, followed by specific notice of the ’538 patent in 2026, establish a level of pre-suit knowledge and subsequent disregard of risk sufficient to support a finding of willful infringement and justify enhanced damages?