Choon's Design's Mini-Loom Patent Campaign, From WeCool Toys and Three Michigan Online Seller Suits to JOVA.

This page is the campaign hub for patent suits by Choon's Design LLC on U.S. Patents 8,899,631 and 9,750,317, which, as the JOVA complaint describes them, claim hand-held templates known in the marketplace as mini-looms, and kits for making bracelets and other items from linked rubber bands. The Anhetoy and JOVA complaints describe Choon's Design as a Michigan company based in Farmington Hills, Michigan, that sells Rainbow Loom kits. The five suits on this page assert one or both patents: one in the District of New Jersey, three in the Eastern District of Michigan, and one in the District of Delaware.

The patents

U.S. Patent 8,899,631, Brunnian Link Making Device and Kit, issued December 2, 2014, from an application filed September 25, 2012. U.S. Patent 9,750,317, Hand Held Link Making Device and Kit, issued September 5, 2017, from an application filed June 5, 2015, as a continuation of an application that is a continuation-in-part of the '631 patent's application. The USPTO copies of both patents list Cheong Choon Ng as the inventor, and the '317 patent lists Choon's Design LLC as the assignee. The Anhetoy and JOVA complaints allege that Choon's Design owns the patents they assert by assignment.

On December 11, 2024, the USPTO issued Reexamination Certificate US 8,899,631 C1 on Reexamination Request No. 90/019,235, dated August 9, 2023. The certificate confirms the patentability of claims 7 through 19, determines that claims 1, 4, and 20 are patentable as amended and that claims 3, 5, 6, and 21 through 24, dependent on an amended claim, are patentable, and cancels claim 2. The Michigan court's orders describe the reexamination as initiated by a third party.

Which suit asserts which patents

Patents appear by their last three digits; the full numbers are above. The cases are listed in order of filing.

The New Jersey suit against WeCool Toys

Choon's Design LLC v. WeCool Toys Inc., No. 2:22-cv-06424 (D.N.J.), filed November 2, 2022, asserts the '631 patent. As the court's September 29, 2023 opinion describes the complaint, it alleges that WeCool's Fashion Bandz Jewelry Kit and Fashion Bandz Go Cup infringe at least claim 10 of the '631 patent, and it pleads direct infringement under 35 U.S.C. 271(a) and induced infringement under 35 U.S.C. 271(b). WeCool moved to dismiss, arguing that, given the prosecution and enforcement histories of the '631 patent and related patents, claim 10 is invalid and unenforceable as a matter of law. Judge Esther Salas denied the motion. The court held that it could not say at the pleading stage that a USPTO estoppel rule, 37 C.F.R. 42.73(d)(3), bars Choon's Design from enforcing claim 10 based on claims of related patents that it had disclaimed or lost before the Patent Trial and Appeal Board, and it noted that the complaint identifies how the accused products infringe every element of claim 10.

Magistrate Judge James B. Clark III's February 8, 2024 opinion and order records that WeCool answered on October 13, 2023 with affirmative defenses and nine counterclaims, including a declaratory judgment claim of invalidity and non-infringement of the '631 patent and claims of tortious interference, abuse of process, and monopolization. That order granted WeCool's motion to stay the case pending the USPTO's reexamination of the '631 patent and directed the Clerk to administratively terminate the action during the stay. The docket shows an order reopening the case entered January 8, 2025, a stipulation of dismissal filed July 21, 2025, and an order dismissing the case entered July 22, 2025.

The Michigan online seller suits

Choon's Design LLC v. Anhetoy, No. 4:22-cv-12963 (E.D. Mich.), was filed under seal on December 7, 2022, against ecommerce stores that the complaint says sell through sites such as Amazon, eBay, and Walmart.com and alleges, upon information and belief, are citizens or businesses domiciled in the People's Republic of China. It pleads direct, contributory, and induced infringement of the '631 patent, along with Lanham Act claims based on Choon's Design's RAINBOW LOOM mark, Registration No. 4,714,893. The JOVA complaint states that in this case "the court entered default judgment and a permanent injunction on August 23, 2024 (ECF Nos. 132, 133)," and it quotes the default judgment as finding that "all the claim 4 elements are found in the Infringing Products."

On February 7, 2025, after oral argument on January 29, 2025, Judge F. Kay Behm entered an opinion and order construing disputed terms of claims 4 and 10 of the '631 patent, on briefing by Choon's Design and two groups of defendants. The court construed "clip including inward facing ends" in claim 10 to mean "connector with ends that face inward toward where ends of the series of links are kept" and "bridge portion" in claim 4 to mean "a portion that bridges the at least two pins by" extending between the base end of each of the pins, and held that "base end," "each of the pins including a first end, a base end," and "each of the pins including a first end, a base end, and an access groove" need no construction and take their plain and ordinary meaning. It rejected the defendants' argument that the clip term renders claim 10 indefinite and reserved the authority to modify its constructions as infringement and validity issues come before it. The order notes that a reexamination initiated by a third party was pending when the parties filed their briefs and that the certificate issued December 11, 2024 made minor amendments not material to the disputed claim construction issues.

On July 7, 2025, on the stipulation of Choon's Design and defendant Funzbo, the court entered an order of consent judgment and permanent injunction against Funzbo. It orders Funzbo to pay Choon's Design $30,000.00 and to destroy its remaining inventory of the accused products, enjoins it from infringing the '631 patent, including by making, using, selling, offering to sell, or importing kits of one or more Y-looms (also called mini-looms) and rubber bands, or kits including rubber bands and at least one of clips and hooks for possible use with a Y-loom, and enjoins it from infringing the RAINBOW LOOM registration.

Choon's Design LLC v. Aysum Life, No. 4:24-cv-13321 (E.D. Mich.), was filed December 12, 2024, against dozens of online sellers identified by their ecommerce store names, which the court's orders say Choon's Design believes are individuals and businesses from China. According to the court's January 30, 2026 opinion, the complaint alleges infringement of claims 4, 10, 13 through 15, 20, and 24 of the '631 patent, as amended by the reexamination certificate, and claims 1 through 3 and 7 of the '317 patent, along with Lanham Act claims.

The court's orders record that it granted a temporary restraining order on April 14, 2025, finding that Choon's Design had shown a strong likelihood of success on the merits of its patent infringement claims but not of its Lanham Act claims, and that it denied the request for an asset restraint. On June 9, 2025, after two responding defendants agreed to its terms, the court granted a preliminary injunction with the same terms as the restraining order, barring the defendants from continuing their trade in the accused mini-loom kits, from accessing their online merchant and payment accounts connected with those products, and from making, using, selling, offering for sale, importing, or advertising the listed products in the United States.

On January 30, 2026, Judge Behm granted in part and denied in part Choon's Design's motion for default judgment against 14 defaulted defendants. The court found that the complaint establishes liability on the patent infringement claims, for the same reasons it had found a strong likelihood of success when it granted the restraining order, but denied default judgment on the Lanham Act claims. It granted Choon's Design's request for 40 percent of each defaulted defendant's revenues as lost profits and, as modified by the court, its alternative request for a reasonable royalty at 16 percent of those revenues; denied a trebling of damages; granted a permanent injunction; and denied an order of asset transfer in the judgment itself. The February 6, 2026 final order of default judgment and permanent injunction holds the defaulted defendants liable for infringing both patents, citing claim 4 of the '631 patent and claim 1 of the '317 patent as examples, orders each to pay the amount listed for it in an appendix, permanently enjoins further infringement, orders Amazon to shut down the listed webstores, and dismisses the action with prejudice.

Choon's Design LLC v. AB Creation, No. 2:25-cv-14085 (E.D. Mich.), is the third Michigan case. The JOVA complaint says Choon's Design enforced both patents in it and that on February 13, 2026 the court granted a temporary restraining order against dozens of online sellers of Y-loom bracelet kits, after comparing claim 4 of the '631 patent and claim 1 of the '317 patent to a representative Y-loom. The docket shows an order regarding a permanent injunction and dismissal against one defendant, signed by Judge Behm and filed under seal, entered August 19, 2026, followed in October and November 2026 by voluntary dismissal entries and clerk's entries of default.

The Delaware suit against JOVA

Choon's Design LLC v. JOVA US INC, No. 1:26-cv-01451 (D. Del.), filed November 11, 2026, asserts at least claims 1, 4, 10, 13, 14, 20, and 24 of the '631 patent, as they appear in the reexamination certificate, and at least claims 1, 2, 3, and 7 of the '317 patent against Klever Kits rubber band bracelet-making kits that the complaint says Jova sells through storefronts on Amazon.com and Walmart.com. The complaint cites the Anhetoy claim construction order and the AB Creation restraining order, alleges that the Y-looms in the accused kits are of the same type and configuration as those addressed in those orders, and alleges willful infringement.

What to watch next

Watch for JOVA's answer or a Rule 12 motion in No. 1:26-cv-01451 and for further entries in No. 2:25-cv-14085. Any of these cases can end at any time, including by settlement or voluntary dismissal.