Bounce Curl LLC v. Partnerships Unincorp Associations

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Bounce Curl, LLC (Arizona)
  • Defendant: The Partnerships and Unincorporated Associations Identified on Schedule “A” (People's Republic of China or other foreign jurisdictions)
  • Plaintiff’s Counsel: Greer, Burns & Crain, Ltd.
• Case Identification: 1:26-cv-01880, N.D. Ill., 02/19/2026
• Venue Allegations: Venue is predicated on Defendants' alleged business activities targeting consumers in the United States, including Illinois, through interactive e-commerce websites.
• Core Dispute: Plaintiff alleges that numerous e-commerce store operators are selling hairbrushes that infringe its design patent covering the ornamental appearance of a hairbrush.
• Technical Context: The dispute is in the consumer hair care and personal grooming products industry, where distinctive product design can be a significant market differentiator.
• Key Procedural History: The complaint does not reference prior litigation or administrative proceedings involving the patent-in-suit. The defendants are identified as a group of unknown partnerships and associations, a procedural approach often used in cases targeting numerous online sellers who allegedly operate under aliases.

Case Timeline

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

U.S. Patent No. D1,028,527 - Hair Brush

• Patent Identification: U.S. Patent No. D1,028,527 (“the ’527 Patent”), Hair Brush, issued May 28, 2024.

The Invention Explained

• Problem Addressed: The complaint suggests that in the competitive hair care market, creating products with "distinctive patented designs" is critical for brand recognition and consumer association with quality Compl. ¶¶7, 9 The patent addresses the need for a novel ornamental appearance for a hairbrush.
• The Patented Solution: The ’527 Patent protects the specific ornamental design of a hairbrush as depicted in its seven figures D1,028,527 Patent, FIGS. 1-7 The design features a handle that tapers to a point, a brush head with multiple rows of bristles, and a distinctive series of scalloped ridges along the left and right sides of the brush head D1,028,527 Patent, FIG. 1 D1,028,527 Patent, FIG. 6 The overall visual impression is a combination of these specific shapes and contours.
• Technical Importance: The commercial value of a design patent lies in its ability to protect the unique visual appearance of a product, which can become a source identifier for consumers and a key aspect of a brand's goodwill Compl. ¶7

Key Claims at a Glance

• The patent asserts a single claim for "The ornamental design for the hair brush, as shown and described" D1,028,527 Patent, Claim
• Unlike a utility patent, a design patent's claim is not defined by a list of textual elements but by the collective visual appearance of the drawings. The scope of protection is determined by the overall ornamental design depicted in Figures 1 through 7 of the patent.

III. The Accused Instrumentality

Product Identification

• The accused instrumentalities are hairbrushes, referred to as the "Infringing Products," which are allegedly sold by the Defendants through various e-commerce stores Compl. ¶3 The complaint states that an image of an exemplary infringing product is shown in its Exhibit 1, which was not publicly filed with the complaint Compl. ¶3

Functionality and Market Context

• The complaint alleges Defendants operate e-commerce stores on platforms such as Amazon, eBay, Temu, and Walmart under various "Seller Aliases" to sell the accused products to consumers in the United States, including Illinois Compl. ¶¶2, 13 The complaint further alleges that these stores are designed to appear as authorized retailers, outlet stores, or wholesalers, making it difficult for consumers to distinguish them from legitimate sellers Compl. ¶16

IV. Analysis of Infringement Allegations

The complaint does not contain a claim chart, which is typical for design patent litigation. The legal test for design patent infringement is whether an ordinary observer, familiar with the prior art, would be deceived into believing the accused design is the same as the patented design. The complaint's infringement theory is based on a direct visual comparison.

The complaint includes several figures from the ’527 Patent to illustrate the patented design. A perspective view (FIG. 1) provides an overall depiction of the hairbrush's claimed appearance Compl. p. 4 Other views, such as the front view (FIG. 4), detail the arrangement of bristles and the shape of the brush head Compl. p. 4 A side view (FIG. 6) highlights the profile of the handle and the unique scalloped edge of the brush head Compl. p. 5

• Identified Points of Contention:
  • Visual Similarity: The central dispute will be a factual comparison of the overall visual appearance of the Defendants' accused products with the design claimed in the ’527 Patent. Since the complaint does not include images of the accused products in the publicly filed document, the degree of similarity cannot be analyzed from the complaint alone.
  • Scope Questions: The primary legal question will be whether an ordinary observer would find the accused designs and the patented design to be substantially the same, such that the observer would be induced to purchase one supposing it to be the other.

V. Key Claim Terms for Construction

Claim construction is generally not a central issue in design patent cases. The claim is defined by the patent's drawings, not by textual limitations that would require judicial interpretation.

VI. Other Allegations

• Indirect Infringement: The complaint includes a conclusory allegation that Defendants infringe "directly and/or indirectly" and the prayer for relief seeks to enjoin "aiding, abetting, [or] contributing to" infringement (Compl. ¶26; Prayer ¶1(b)). However, the body of the complaint does not plead specific facts to support the required elements of knowledge and intent for a claim of induced or contributory infringement.
• Willful Infringement: The complaint alleges that Defendants' infringement was willful Compl. ¶23 The asserted basis is that Defendants "knowingly and willfully" imported, offered for sale, and sold the infringing products without a license or authorization from the Plaintiff Compl. ¶22 The complaint seeks enhanced damages as a result (Prayer ¶4).

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

1. The Visual Test: The case will fundamentally depend on a visual comparison. The dispositive question will be whether the overall ornamental design of the Defendants' accused hairbrushes is substantially the same as the design depicted in the ’527 Patent from the perspective of an ordinary observer.
2. Enforcement and Jurisdiction: A significant practical issue will be the Plaintiff's ability to effectively identify, serve process on, and enforce any potential judgment against a large number of pseudonymous, foreign-based e-commerce operators, which the complaint alleges are designed to conceal their true identities Compl. ¶¶11-12, 17