Wu v. Accfore

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Juanren Wu (Shenzhen, CN)
  • Defendant: The Partnerships and Unincorporated Associations Identified on Schedule “A” (Jurisdiction(s) Unknown, alleged to be China or other foreign jurisdictions)
  • Plaintiff’s Counsel: Ford Banister LLC
• Case Identification: 1:26-cv-01673, N.D. Ill., 02/13/2026
• Venue Allegations: Plaintiff alleges venue is proper because Defendant targets consumers in the United States, including Illinois, through interactive e-commerce stores and has targeted sales to Illinois residents.
• Core Dispute: Plaintiff alleges that Defendant’s e-commerce stores sell paint pen tips that infringe a U.S. design patent covering the ornamental appearance of such tips.
• Technical Context: The dispute relates to accessories for "diamond painting," a popular craft or hobby where small resin facets ("diamonds") are applied to an adhesive canvas to create a mosaic-like picture, often using a specialized pen tool.
• Key Procedural History: The complaint does not mention any prior litigation, licensing history, or post-grant administrative proceedings involving the patent-in-suit. The case is filed against a group of unidentified online sellers, a common procedural posture in e-commerce enforcement actions.

Case Timeline

Date	Event
2021-10-06	Priority Date for D'230 Patent
2024-10-29	U.S. Design Patent No. D1,049,230 S Issues
2026-02-13	Complaint Filed

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

• Patent Identification: U.S. Design Patent No. D1,049,230 S, "Painting Pen Tip," issued October 29, 2024 (the “D’230 Patent”).

U.S. Design Patent No. D1,049,230 S - Painting Pen Tip

The Invention Explained

• Problem Addressed: Design patents protect ornamental appearance rather than functional utility. The D’230 Patent does not describe a technical problem but instead presents a new, original, and ornamental design for an article of manufacture, specifically a "painting pen tip" (D’230 Patent, title; D’230 Patent, claim).
• The Patented Solution: The patent claims the specific visual appearance of the pen tip as depicted in its figures (D’230 Patent, claim; D’230 Patent, FIGs. 1-9). The design consists of a flared, conical body that tapers to a narrow opening, transitioning to a wider, stepped collar, and terminating in a base with several circumferential ribs. The broken lines in the patent drawings, such as the pen body in Figure 1, indicate that those elements are for illustrative purposes only and do not form part of the claimed design (D’230 Patent, description).
• Technical Importance: The complaint alleges that products embodying this design have become "enormously popular" and are "instantly recognizable" within the diamond painting community, associating the design with quality and innovation (Compl. ¶¶8-9).

Key Claims at a Glance

• Design patents contain a single claim. The D'230 Patent asserts one independent claim for "The ornamental design for a painting pen tip as shown and described" (D’230 Patent, claim).
• The essential visual elements of this single claim include:
  • A generally conical main body with a smooth, flared surface.
  • A stepped collar at the wider end of the conical body.
  • A cylindrical base section featuring multiple raised ribs for attachment.

III. The Accused Instrumentality

Product Identification

The complaint identifies the accused products as "Unauthorized Products," described as diamond paint pens that embody the patented design (Compl. ¶¶3, 6, 9). The specific products are sold through various online e-commerce stores operated by the unidentified Defendant under different "Seller Aliases" (Compl. ¶¶3-4, 16).

Functionality and Market Context

• The complaint alleges these products are offered for sale, sold, and imported into the United States, including Illinois, through online marketplaces (Compl. ¶16; Compl. ¶25).
• The complaint frames the Defendant's business as part of a broader pattern of online infringement by foreign entities that use anonymity and multiple storefronts to avoid detection and enforcement (Compl. ¶¶4, 15, 18-20). The complaint does not provide specific details on the functionality of any particular accused product beyond its alleged infringement of the patented design.

IV. Analysis of Infringement Allegations

The complaint alleges that the Defendant's "Unauthorized Products" infringe the D'230 Patent (Compl. ¶29). It does not contain a formal claim chart or a side-by-side visual comparison between the patented design and an accused product. Instead, it presents an image of the patented design itself and asserts that Defendant sells products embodying it (Compl. p. 4; Compl. ¶¶9, 29). This image, taken from the patent, shows a perspective view of the flared tip and a side view of the ribbed attachment base (Compl. p. 4).

The infringement analysis for a design patent is governed by the "ordinary observer" test, which asks whether an ordinary observer, familiar with the prior art designs, would be deceived into purchasing the accused product believing it to be the patented one.

• Identified Points of Contention:
  • Evidentiary Question: A primary issue will be establishing the specific appearance of the "Unauthorized Products." The complaint makes broad allegations but does not include photographs or screenshots of any actual product sold by the Defendant, which will be necessary evidence for the court to apply the ordinary observer test.
  • Scope Questions: The core legal question will be whether the accused products are "substantially the same" as the claimed design. The analysis will focus on the overall visual impression created by the combination of the flared cone, the stepped collar, and the ribbed base, rather than on any single feature in isolation. Any differences in proportion, curvature, or surface finish between the accused products and the patent figures will be central to the dispute.

V. Key Claim Terms for Construction

In design patent cases, claim construction is typically limited to describing the visual appearance of the article shown in the patent's drawings, as the drawings themselves define the scope of the single claim. There are no traditional textual "terms" to construe.

• The "Term": The scope of the single claim for "the ornamental design for a painting pen tip as shown and described" (D’230 Patent, claim).
• Context and Importance: The construction of the claim will determine the overall visual impression against which the accused products are compared. A key aspect of this construction is defining what is and is not part of the protected design, which directly impacts the infringement analysis.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: Practitioners may argue that the claim covers the overall aesthetic and configuration—a flared tip with a ribbed base—and is not limited to the exact proportions shown. The focus would be on the general visual impression that the design creates for an ordinary observer.
  • Evidence for a Narrower Interpretation: The patent’s description explicitly states that "The dash-dash broken lines shown in the drawings represent environment and portions of the article that form no part of the claimed design" (D’230 Patent, description). This provides a clear basis for limiting the claim scope strictly to the features shown in solid lines (the tip itself) and excluding the pen body to which it attaches. A defendant may argue that any deviation from the precise curves, steps, and ribbing shown in Figures 2-9 of the patent creates a different overall visual impression, thus avoiding infringement.

VI. Other Allegations

• Indirect Infringement: The complaint does not allege specific facts to support induced or contributory infringement. The prayer for relief includes a request to enjoin Defendant from "aiding, abetting, contributing to, or otherwise assisting anyone" in infringing (Compl., prayer 1(b)), but the factual allegations in the body of the complaint focus on direct infringement through Defendant's own making, using, selling, and importing activities (Compl. ¶29).
• Willful Infringement: The complaint alleges that Defendant has "knowingly and willfully" infringed the D'230 Patent (Compl. ¶13; Compl. ¶25). It requests a judgment that Defendant has willfully infringed and seeks enhanced damages (Compl., prayer 2; Compl., prayer 4). The complaint does not specify a basis for pre-suit knowledge, such as a cease-and-desist letter.

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

This case appears to be a targeted enforcement action against online sellers common in design patent and trademark disputes. The central questions for the court will likely be:

• A Threshold Procedural Question: Can the Plaintiff successfully identify, locate, and serve the anonymous e-commerce operators listed in Schedule A, who are alleged to reside in foreign jurisdictions and use tactics to conceal their identities?
• The Core Infringement Question: Assuming accused products are identified, does their ornamental design create an overall visual impression that is substantially the same as the D'230 Patent's design in the eyes of an ordinary observer familiar with prior art paint pen tips?
• An Evidentiary Challenge: What evidence will the Plaintiff present to prove the specific appearance of the products sold by the Defendant, given that the complaint itself lacks any direct visual evidence (e.g., screenshots or photographs) of the accused products? The resolution of the infringement question will depend entirely on this yet-to-be-produced evidence.