Shenzhen Duoleduo Technology Co. Ltd. v. The Individuals, Corporations, Limited Liability Companies, Partnerships and Unincorporated Associations Identified in Schedule “A” Hereto

CourtDistrict Court, N.D. Illinois
DecidedJune 18, 2026
Docket1:25-cv-13392
StatusUnknown

This text of Shenzhen Duoleduo Technology Co. Ltd. v. The Individuals, Corporations, Limited Liability Companies, Partnerships and Unincorporated Associations Identified in Schedule “A” Hereto (Shenzhen Duoleduo Technology Co. Ltd. v. The Individuals, Corporations, Limited Liability Companies, Partnerships and Unincorporated Associations Identified in Schedule “A” Hereto) is published on Counsel Stack Legal Research, covering District Court, N.D. Illinois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

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Shenzhen Duoleduo Technology Co. Ltd. v. The Individuals, Corporations, Limited Liability Companies, Partnerships and Unincorporated Associations Identified in Schedule “A” Hereto, (N.D. Ill. 2026).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION

Shenzhen Duoleduo Technology ) Co. Ltd., ) ) Plaintiff, ) No. 25 CV 13392 ) v. ) Judge Jeffrey I. Cummings ) The Individuals, Corporations, ) Limited Liability Companies, ) Partnerships and Unincorporated ) Associations Identified in Schedule “A” ) Hereto, ) ) Defendants. )

MEMORANDUM OPINION AND ORDER

Plaintiff Shenzhen Duoleduo Technology Co. Ltd. (“Shenzhen” or “plaintiff”) filed this lawsuit against seven Amazon sellers alleging patent infringement related to Shenzhen’s children’s climbing structure. The Court previously granted Shenzhen’s ex parte motion for a temporary restraining order, (Dckt. #20), which it later extended, (Dckt. ##25, 27). Now before the Court is Shenzhen’s motion for preliminary injunction, (Dckt. #26), to which defendant no. 2 (“DTE Shop USA”), no. 4 (“doowroodni”), and no. 5 (“Yopnoyik”) object (collectively, “the Objecting Defendants”).1 For the following reasons, plaintiff’s motion for preliminary injunction is denied. I. BACKGROUND

Shenzhen is a company organized under the laws of China and is in the business of designing, sourcing, and marketing climbing frames and structures. (Dckt. #1 ¶¶9, 29.)

1 As for the additional defendants, defendant nos. 1, 3, and 7 have since been voluntarily dismissed, (Dckt. ##37, 79), and the Court has entered an order of default against defendant no. 6, (Dckt. #73). Shenzhen is the owner of U.S. Design Patent No. D1,062,965 issued on February 18, 2025, entitled “Climbing Structure” (the “D’965 Patent”) and U.S. Design Patent No. D1,091,741 issues on September 2, 2025, entitled “Climbing Frame” (the “D’741 Patent,” and collectively with the D’965 Patent, the “Asserted Patents”). (Dckt. #1 at (410-18; see also Dckt #2-2 and 2- 3.) The D’741 Patent is a continuation of the D’965 Patent, and the Asserted Patents share a priority date of May 17, 2024. (/d. at 4413, 17.) The D’965 Patent claims the “ornamental design for a climbing structure, as shown and described.” (Dckt. #2-2 at 4). Figure 1 depicts the claimed design of the D’965 Patent as follows:

CG D°965 Patent Wr

\ 9 / > SS

mT SS ESSV9 DB

@ FIG.1

(Id. at 4). The dashed broken lines in the figure are for “the purpose of illustrating portions of the climbing structure and form no part of the claimed design” of the D’965 Patent. (/d. at 2). The D’741 Patent claims the “ornamental design for a climbing frame, as shown and described.” (Dckt. #2-3 at 2 (emphasis added)). Figure 1 depicts the claimed design of the D’741 Patent as follows:

D’741 Patent

9 So pee Fe / A

a /

mn / Ny » —

(Id. at 4). Again, the dashed broken lines in the figure are for “the purpose of illustrating portions of the climbing toy and form no part of the claimed design” of the D’741 Patent. (/d. at 2). According to Shenzhen, the Asserted Patents were valid and enforceable at all times relevant to this action. (/d. 9915, 19.)

Defendants are online retailers operating various Amazon storefronts that Shenzhen alleges are offering for sale climbing structures that infringe the Asserted Patents. (Dckt. #2 ¶¶23, 34). In its two-count complaint, Shenzhen brings claims for patent infringement of the Asserted Patents and unjust enrichment. In support, Shenzhen simply attaches the two patents at issue, along with images of each allegedly infringing product. (Dckt. ##2-2–2-4).

Shortly after filing the complaint, Shenzhen filed, and the Court granted, its ex parte motion for a temporary restraining order (“TRO”) against all defendants. Among other things, the TRO enjoined defendants from further infringement of the Asserted Patents, authorized Amazon to freeze defendants’ accounts, and permitted expedited discovery. (Dckt. #20). The Court also granted plaintiff’s request for electronic service of process. (Dckt. #19). Thereafter, Shenzhen filed its motion for preliminary injunction, in which it essentially argues, without much elaboration, that a preliminary injunction is proper because the Court already granted the motion for TRO. (See Dckt. #26-1 at 3 (“Since the standard for granting a TRO and the standard for granting a preliminary injunction are identical in this Circuit, the requirements for entry of a

preliminary injunction extending the TRO have been satisfied.”)). The Objecting Defendants have since appeared through counsel to oppose the motion for preliminary injunction and have also filed counterclaims. Specifically, defendant no. 2 (“DTE Shop”) filed a counterclaim, (Dckt. #45), and a response in opposition to the motion for preliminary injunction, (Dckt. #39). Defendant nos. 4 (“doowroodni”) and no. 5 (“Yopnoyik”), who are represented by the same attorney, also filed counterclaims, (Dckt. #42), as well as a joint response in opposition to the motion for preliminary injunction, (Dckt. #32). Plaintiff replied, (Dckt. ##44, 48), and the motion is ripe for resolution. 2

2 The Court notes that the Seventh Circuit, in two recent opinions, has offered additional guidance in Schedule A cases such as this one. First, in Liu v. Monthly, 170 F.4th 1090 (7th Cir. 2026), the Court II. STANDARD FOR A PRELIMINARY INJUNCTION

“[I]njunctive relief [is] an extraordinary remedy that may only be awarded upon a clear showing that the plaintiff is entitled to such relief.” Winter v. Nat. Res. Def. Council, Inc., 555 U.S. 7, 22 (2008); see also Barbecue Marx, Inc. v. 551 Ogden, Inc., 235 F.3d 1041, 1044 (7th Cir. 2000), quoting Schwinn Bicycle Co. v. Ross Bicycles, Inc., 870 F.2d 1176, 1184 (7th Cir. 1989) (“A preliminary injunction is a very serious remedy, ‘never to be indulged in except in a case clearly demanding it.’”). To decide whether injunctive relief is warranted, courts in the Seventh Circuit engage in a multi-step inquiry involving a threshold phase and a balancing phase. See Int’l Ass’n of Fire Fighters, Local 365 v. City of E. Chi., 56 F.4th 437, 446 (7th Cir. 2022). First, the moving party—here, Shenzhen—has the burden of making a threshold showing that (1) it is likely to succeed on the merits; (2) traditional legal remedies would be inadequate; and (3) it will suffer irreparable harm absent a preliminary injunction. Life Spine, Inc. v. Aegis Spine, Inc., 8 F.4th 531, 539 (7th Cir. 2021).

clarified what was required to establish personal jurisdiction over defendants. More recently, in Kangol LLC v. Hangzhou Chuanyue Silk Imp. & Exp. Co., 2026 WL 1502198 (7th Cir. May 29, 2026), the Court held that email service on Chinese defendants violates the Hague Service Convention. However, these rulings have no implication here where: (1) contrary to DTE’s assertion, (Dckt. #45), plaintiff did present evidence of completed sales and shipment of the accused products to Illinois, (see Dckt. #17 at 3); and (2) the Objecting Defendants have seemingly waived any objection to personal jurisdiction or improper service, having appeared in this matter, litigated extensively, and filed counterclaims. See Kangol LLC v. Hangzhou Chuanyue Silk Imp. & Exp. Co., No. 25-2205, 2026 WL 1502198, at *2 (7th Cir. May 29, 2026) (“A defendant waives an objection to improper service if he gives a plaintiff a reasonable expectation that he will defend the suit on the merits or where he causes the court to go to some effort that would be wasted if personal jurisdiction is subsequently found lacking.”) (cleaned up); Blockowicz v.

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