Design Patent Enforcement Against Online Marketplace Sellers: Key Insights from Shenzhen Kunshengze v. Schedule A Defendants
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📋 Case Summary
| Case Name | Shenzhen Kunshengze Electronic Commerce Co., Ltd. v. Schedule A Defendants |
| Case Number | 1:24-cv-00523 (N.D. Ill.) |
| Court | Northern District of Illinois |
| Duration | Jan 2024 – Mar 2024 66 days |
| Outcome | Plaintiff Win — Dismissals |
| Patents at Issue | |
| Accused Products | Finger stretching apparatus |
Case Overview
The Parties
⚖️ Plaintiff
A China-based e-commerce entity with a consumer products portfolio, leveraging U.S. design patents to enforce against marketplace sellers.
🛡️ Defendant
Over 150 individual online storefronts operating across platforms such as Amazon, eBay, and Walmart Marketplace, many identifiable only by seller handles.
Patents at Issue
This case involved a single U.S. design patent protecting the ornamental appearance of a finger stretching apparatus, highlighting the effectiveness of design patents in protecting consumer health accessories. Design patents are registered with the U.S. Patent and Trademark Office (USPTO) and protect ornamental appearance rather than functional technology.
- • US D980,990S — Ornamental design of a finger stretching apparatus
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The Verdict & Legal Analysis
Outcome
The case concluded not through a merits-based judgment, but through the sequential dismissal of all named defendants. This reflects a well-established enforcement pattern in the Northern District of Illinois, where cases against online marketplace sellers often resolve through confidential out-of-court settlements or uncontested asset restraint, leaving no remaining defendants for a formal ruling.
Key Legal Issues
The infringement action centered on design patent rights under 35 U.S.C. § 171. Because no defendant mounted a challenge, there was no claim construction hearing or infringement defense litigated on the merits. The case’s legal trajectory was determined entirely by plaintiff strategy and defendant non-response, leveraging the “Schedule A” litigation model. This includes ex parte TRO applications freezing marketplace accounts and asset restraint orders compelling platforms to hold seller funds, driving rapid, confidential resolutions.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in consumer health accessory design. Choose your next step:
📋 Understand This Case’s Impact
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High Risk Area
Finger stretching apparatus designs
1 Patent at Issue
USD980,990S
Strategic Enforcement
Against online sellers
✅ Key Takeaways
Schedule A design patent cases in N.D. Illinois resolve overwhelmingly through defendant dismissals, not merits rulings.
Search related case law →Design patents on consumer products provide actionable, cost-efficient enforcement rights in the Schedule A litigation framework.
Explore precedents →Frequently Asked Questions
The case involved U.S. Design Patent USD980,990S (Application No. US29/814406), protecting the ornamental design of a finger stretching apparatus.
All defendants were dismissed — consistent with either confidential settlements or default posture — leaving no remaining parties. Chief Judge Tharp terminated the case upon dismissal of the last defendants per docket entries [68] and [71].
It demonstrates that marketplace sellers offering visually similar consumer products face credible design patent enforcement risk, including pre-judgment asset freezes, even before any infringement determination on the merits.
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References
- USPTO Patent Center – USD980990S
- PACER Case Locator – 1:24-cv-00523
- U.S. Patent and Trademark Office — Design Patent Resources
- Cornell Legal Information Institute — 35 U.S.C. § 171
- PatSnap — IP Intelligence Solutions for Law Firms
This article is for informational purposes only and does not constitute legal advice. All case information is drawn from publicly available court records. For platform capabilities, visit PatSnap.