Choon’s Design vs. AYSum Life: Default Judgment Win in Toy Patent Case

Introduction

In a decisive patent infringement victory, Choon’s Design, LLC secured a default judgment against AYSum Life in the U.S. District Court for the Eastern District of Michigan, forcing the shutdown of infringing Amazon storefronts and freezing the defendant’s financial accounts. Filed December 12, 2024, and closed February 6, 2026, Case No. 4:24-cv-13321 resolved in 421 days — without the defendant ever mounting a legal defense.

The case centered on mini-loom kit products — the category made famous by rubber band bracelet-making toys — and two patents protecting Choon’s Design’s proprietary innovations. The outcome underscores a growing enforcement strategy among consumer product patent holders: leveraging e-commerce platform cooperation, default judgment procedures, and aggressive financial account freezing to neutralize infringing sellers operating through online marketplaces.

For patent attorneys, IP professionals, and R&D teams active in the toy, craft, and consumer product sectors, this case offers critical lessons in patent assertion, marketplace enforcement, and the tactical power of default judgment procedures.

Case Overview

The Parties

The Patents at Issue

Two utility patents formed the foundation of the infringement claims:

• • U.S. Patent No. 8,899,631 — The ‘631 Patent covers inventive aspects of mini-loom kit design and construction.
• • U.S. Patent No. 9,750,317 — The ‘317 Patent covers further inventive aspects of mini-loom kit design.

Legal Representation

Plaintiff Choon’s Design was represented by Dean Williamson Amburn, Esq. of Amburn Law PLLC, based in Detroit, Michigan (400 Renaissance Center, Suite 2111). No defense counsel appeared on behalf of AYSum Life, a fact central to the case’s procedural outcome.

Litigation Timeline & Procedural History

The case was filed in the Eastern District of Michigan — a logical venue for Choon’s Design given the company’s Michigan roots and the court’s familiarity with the plaintiff’s prior enforcement activity. Venue selection in the plaintiff’s home district is a common and strategically sound approach when defendants are e-commerce marketplace sellers with no fixed domestic address.

The 421-day duration, while not unusually short for patent litigation, is notable given that the case resolved via default judgment — a procedurally efficient outcome when defendants fail to appear or respond. The absence of claim construction hearings, expert discovery battles, or summary judgment briefing compressed the timeline considerably compared to fully contested patent cases, which routinely exceed two to three years.

The Verdict & Legal Analysis

Outcome

The Eastern District of Michigan entered a default judgment in favor of Choon’s Design, finding AYSum Life liable for infringement of both the ‘631 Patent and the ‘317 Patent. The court’s order included several enforcement mechanisms:

• Monetary damages as specified in the court’s Appendix A (not publicly itemized in the summary record)
• Permanent injunction prohibiting the defendant from further infringing either patent
• Amazon storefront shutdown for all product listings identified as infringing
• Financial account freezing authority granted to Choon’s Design, with Amazon ordered to disclose defendant financial account details within ten business days
• Ongoing enforcement authority extending to Walmart.com, eBay, and other online platforms and financial institutions if new accounts are identified
• $10,000 bond posted by Amburn Law PLLC on behalf of Choon’s Design released and returned upon case closure

The court dismissed the action with prejudice, retaining jurisdiction to enforce the parties’ settlement agreements — suggesting some parallel settlement discussions occurred alongside the default judgment proceedings.

Legal Significance

While default judgments carry limited direct precedential value on patent merits — because no contested claim construction or validity ruling was issued — this case reinforces several important procedural and enforcement doctrines:

1. E-commerce platform cooperation is judicially enforceable, with courts ordering Amazon to freeze accounts, disclose financial information, and withhold inventory from infringing sellers.
2. Ongoing enforcement authority across multiple platforms (Amazon, Walmart, eBay) can be granted prospectively, giving patent holders sustained leverage.
3. Default judgment in patent cases remains an effective tool against non-appearing defendants, particularly anonymous or overseas marketplace sellers.