Sport Squad Inc v. Proton Sports Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Sport Squad, Inc. d/b/a JOOLA (Maryland)
  • Defendant: Proton Sports, Inc. (Arizona)
  • Plaintiff's Counsel: K&L Gates LLP
• Case Identification: 2:26-cv-02487, D. Ariz., 04/09/2026
• Venue Allegations: Plaintiff alleges venue is proper in the District of Arizona because Defendant is incorporated in Arizona, maintains a regular and established place of business in the district, and sells the accused products within the district.
• Core Dispute: Plaintiff alleges that Defendant's pickleball paddles infringe a patent related to the internal construction of game paddles, specifically concerning the use of internal fillers and frames to modify performance characteristics.
• Technical Context: The technology relates to the design and manufacture of high-performance sports paddles, a field seeing significant innovation driven by the rapid growth in popularity of sports like pickleball.
• Key Procedural History: The complaint does not mention any prior litigation, licensing history, or post-grant proceedings involving the patent-in-suit.

Case Timeline

Date	Event
2023-08-30	U.S. Patent No. 12,465,826 Priority Date
2025-01-17	U.S. Patent No. 12,465,826 Application Filing Date
2025-11-11	U.S. Patent No. 12,465,826 Issue Date
2026-04-09	Complaint Filing Date

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

U.S. Patent No. 12,465,826 - "Game Paddle"

• Patent Identification: U.S. Patent No. 12,465,826, "Game Paddle," issued November 11, 2025 (the "'826 Patent").

The Invention Explained

• Problem Addressed: The patent addresses a general need for game paddles, such as those used for pickleball, that offer "better performance for players" than conventional designs '826 Patent, col. 1:25-27 The background implies a need for methods to tune a paddle's feel, power, and vibration characteristics '826 Patent, col. 3:5-7
• The Patented Solution: The invention is a game paddle constructed with a core material sandwiched between two surfaces, where portions of the core are selectively removed to create a "gap" '826 Patent, col. 10:2-5 This gap is then filled with a "first filler" material, such as foam, to alter the paddle's properties '826 Patent, col. 5:1-4 The paddle is further surrounded by a "frame" which itself contains a "hollow interior portion" that can be filled with a "second filler" '826 Patent, col. 11:1-12:31 This multi-component construction, illustrated in figures like FIG. 6B, allows for precise engineering of performance characteristics like vibration dampening and power '826 Patent, abstract '826 Patent, col. 3:5-7
• Technical Importance: This approach provides a method for manufacturers to customize paddle performance by using different filler materials in specific internal locations, potentially creating paddles with a larger sweet spot, reduced vibration, or increased power without fundamentally changing the primary core material '826 Patent, col. 3:5-7

Key Claims at a Glance

• The complaint asserts at least independent claim 1 '826 Patent, col. 12:4-40 Compl. ¶17
• Claim 1 Elements:
  • A pickleball paddle comprising a front surface, a back surface, and a core disposed between them.
  • The core has an "outer boundary" with a first portion spaced apart from the paddle's internal perimeter and a second portion closer to that perimeter.
  • A "gap formed as a void external to the core" and positioned between the core's outer boundary and the paddle's internal perimeter.
  • A "first filler" is disposed within at least a portion of this gap.
  • A "frame" is disposed about at least the head portion of the paddle, defining a "hollow interior portion."
  • A "second filler" is disposed within at least a portion of the frame's hollow interior.
• The complaint does not explicitly reserve the right to assert dependent claims, but the prayer for relief seeks judgment that "one or more claims" have been infringed Compl., Prayer A

III. The Accused Instrumentality

Product Identification

• The accused product is the Proton Flamingo Series 3 pickleball paddle Compl. ¶¶1-2

Functionality and Market Context

• The complaint describes the Accused Product as an "infringing pickleball paddle" Compl. ¶2 It alleges that the technology of the '826 Patent, involving "internal structures designed to affect the paddle's feel and performance," is implemented in these paddles Compl. ¶12 No specific technical details about the construction or materials of the Proton Flamingo Series 3 are provided in the complaint. The complaint alleges that Defendant manufactures, imports, offers for sale, and sells these paddles throughout the United States Compl. ¶4

IV. Analysis of Infringement Allegations

The complaint alleges that the Defendant directly infringes at least Claim 1 of the '826 Patent by making, using, selling, and/or importing the Accused Product Compl. ¶17 It states that a "non-limiting claim chart (Exhibit 2)" is attached to support this allegation; however, this exhibit was not provided with the complaint Compl. ¶17 The complaint itself does not contain a detailed, element-by-element mapping of the accused product's features to the limitations of Claim 1. The infringement theory rests on the general assertion that the Accused Product embodies the inventions of the '826 Patent Compl. ¶12 Compl. ¶13

No probative visual evidence provided in complaint.

Identified Points of Contention

• Structural Questions: The primary question will be factual: does the Proton Flamingo Series 3 paddle possess the complex, multi-component internal structure required by Claim 1? Specifically, does it contain a core, a separate gap external to the core, a first filler in that gap, a frame with a hollow interior, and a second filler within that hollow interior? The absence of a claim chart or technical diagrams in the complaint leaves this as a central unknown.
• Scope Questions: A key legal question may arise over the claim phrase "a gap formed as a void external to the core." The infringement analysis may turn on whether this requires the gap and core to be distinct components manufactured separately or if it can read on a single, molded internal structure that has both solid (core) and void (gap) regions.

V. Key Claim Terms for Construction

The complaint does not provide sufficient detail for a full analysis of likely claim construction disputes. However, based on the patent's language, the following terms may become central to the case.

• The Term: "a gap formed as a void external to the core and positioned between the outer boundary of the core and the internal perimeter of the pickleball paddle" (Claim 1)
• Context and Importance: This term defines the fundamental spatial relationship between the core and the first filler. The definition will be critical to determining infringement, as it distinguishes the claimed invention from paddles with a simple, monolithic core. Practitioners may focus on this term to dispute whether the accused product's internal construction meets this specific structural limitation.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification describes a process of "coring out" or removing portions of an existing core to create the gap, which could suggest that the "gap" is simply a region within the overall paddle structure where core material is absent '826 Patent, col. 3:20-24 '826 Patent, col. 10:2-5
  • Evidence for a Narrower Interpretation: The phrasing "external to the core" could be interpreted to mean that the core is a discrete element with its own defined boundary, and the gap is an entirely separate space that is later filled. The claim's distinction between the "outer boundary of the core" and the "internal perimeter of the pickleball paddle" supports an interpretation requiring at least three distinct zones: the core, the gap, and the frame/edge.

VI. Other Allegations

• Indirect Infringement: The complaint does not contain allegations of indirect infringement.
• Willful Infringement: The complaint alleges willful infringement, stating that Defendant "actually knew or should have known" its actions constituted an "unjustifiably high risk of infringement" Compl. ¶21 It further alleges that Defendant had "actual knowledge of JOOLA's '826 Patent" Compl. ¶14 The complaint does not specify the basis or timing of this alleged knowledge.

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

This case appears to present two fundamental questions for the court's determination:

• A core issue will be one of structural correspondence: Does the internal architecture of the Proton Flamingo Series 3 paddle, once revealed through discovery, actually contain the specific multi-part construction recited in Claim 1, including a core, a distinct external gap with a first filler, and a hollow frame with a second filler?
• A related issue will be one of definitional interpretation: How will the court construe the spatial relationship required by the phrase "a gap formed as a void external to the core"? The outcome of this construction could be dispositive, determining whether a wide range of modern paddle constructions fall within the claim's scope or if the claim is limited to a very specific manufacturing method.