Wenzhou Chuyin Sues Schedule A Sellers on a Cordless Hair Straightening Comb Design Patent.

The complaint

Wenzhou Chuyin Electronics Co., Ltd. v. The Partnerships and Unincorporated Associations Identified on Schedule A, No. 2:26-cv-02262 (W.D. Pa.), is a seven-page complaint entered October 20, 2026, with one count of design patent infringement. The complaint describes Wenzhou Chuyin Electronics Co., Ltd. as a company organized under the laws of the People's Republic of China with its principal place of business in Zhejiang Province, China. It describes the defendants as individuals, partnerships, unincorporated associations, and business entities of unknown makeup that own or operate Amazon.com, Temu.com, and eBay.com storefronts identified on Schedule A. The complaint alleges, on information and belief, that each defendant resides or is domiciled outside the United States.

The complaint says Schedule A identifies each defendant's storefront name, marketplace identifier, displayed business information, if any, and accused listings, and that Schedule A is being submitted under seal subject to leave of court. It alleges that each defendant accepted an order for an accused product to be delivered to Pittsburgh, Pennsylvania.

The design patent

The complaint asserts U.S. Design Patent D1,109,423, titled Cordless Hair Straightening Comb. The patent's front page shows that it issued January 13, 2026 from application 29/954,591, filed July 28, 2024, and lists Wenzhou Chuyin Electronics Co., Ltd., of Zhejiang, China, as the applicant and Shangjing Xie as the inventor. The patent contains a single claim: the ornamental design for a cordless hair straightening comb as shown and described. The complaint alleges that the plaintiff is identified on the face of the patent as its applicant, owns all right, title, and interest in the patent, and attaches a copy as Exhibit 1.

A third-party request for reexamination of the patent was filed February 28, 2026, under Control No. 90/016,019. USPTO records show that the request was granted in a mailing dated May 27, 2026. In a September 15, 2026 motion in No. 1:26-cv-07324, Wenzhou Chuyin described the reexamination as pending.

Wenzhou Chuyin earlier asserted the same design patent against Schedule A defendants in the Northern District of Illinois, in No. 1:26-cv-07324, filed June 23, 2026, and No. 1:26-cv-11163, filed September 14, 2026. The docket in No. 1:26-cv-07324 lists that case as terminated on October 26, 2026.

The accused products

The complaint alleges that the defendants offer to sell, sell, and/or import into the United States cordless hair-straightening combs whose appearance is substantially the same as the claimed design. It describes the claimed design, as illustrated in the patent drawings, as including an elongated housing with rounded ends, an upper head surround, and a lower elongated control surround within which a smaller oblong element is nested near its lower end, arranged along the long axis of the housing. It alleges that, in the eye of an ordinary observer familiar with the prior art, the design of each accused product is substantially the same as the claimed design.

The complaint alleges that the accused products share a common configuration and overlapping listing characteristics that, it says, show a common manufacturing, distribution, or listing source. It alleges that eight defendants offer accused products with substantially identical two-tone color arrangements, particularly as to the power button and side-edge accent, that a majority of them market accused products under the same or substantially similar distinctive product designation in their listing titles, and that certain defendants share unusual wording, including the same nonstandard spelling, and overlapping technical specifications. On that basis it alleges that joinder is proper under Federal Rule of Civil Procedure 20(a)(2) and 35 U.S.C. 299(a). It says the plaintiff's investigation preserved each defendant's listings and store profile between September 30 and October 3, 2026, and that a representative placed orders for the accused products on the three marketplaces for delivery to Pittsburgh, Pennsylvania.

The count and relief

Count I alleges infringement of U.S. Design Patent D1,109,423 under 35 U.S.C. 271(a) by offering to sell, selling, and/or importing the accused products identified on Schedule A. The complaint asks for a temporary restraining order and preliminary and permanent injunctions under 35 U.S.C. 283 and Federal Rule of Civil Procedure 65, damages adequate to compensate for the infringement under 35 U.S.C. 284 or, at the plaintiff's election, the defendants' total profits under 35 U.S.C. 289, a finding that the case is exceptional and an award of reasonable attorney fees under 35 U.S.C. 285, costs, and pre-judgment and post-judgment interest. The complaint demands a jury trial on all issues so triable.

The early filings

The docket shows a motion to appear pro hac vice entered October 26, 2026, and an order on that motion entered October 27, 2026.

What to watch next

Watch for any motion for a temporary restraining order or preliminary injunction, for a Schedule A filing or an order on leave to file that schedule under seal, and for appearances or service. Also watch the reexamination proceeding, Control No. 90/016,019.