Cup Lid Design Patent Dispute Settles in Washington Federal Court
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📋 Case Summary
| Case Name | Dongguan Zhouda Technology Co., Ltd. v. Xinjie Dai |
| Case Number | 2:25-cv-00536 |
| Court | U.S. District Court for the Western District of Washington |
| Duration | March 2025 – January 2026 292 days |
| Outcome | Settlement Dismissal — Terms Undisclosed |
| Patents at Issue | |
| Accused Products | ANTAND, HWHIEUAIK-US, Sandstorm2024, ZJT cup lids |
Case Overview
The Parties
⚖️ Plaintiff
A China-based manufacturer operating in the consumer goods space, with apparent commercial interests in the U.S. market through design-protected products.
🛡️ Defendant
An individual defendant, a pattern increasingly common in e-commerce-related design patent disputes, often named for allegedly listing infringing products on U.S. platforms.
The Patent at Issue
This dispute centered on U.S. Design Patent No. USD1056616S (Application No. US29/955297), covering the ornamental design of a cup lid. Design patents, registered with the U.S. Patent and Trademark Office (USPTO), protect the visual appearance of a product rather than its functional aspects.
- • US D1056616S — Ornamental design of a cup lid
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The Verdict & Legal Analysis
Outcome
On January 12, 2026, Judge Tana Lin entered an order dismissing all claims **without prejudice** and without costs to either party, following the parties’ notice of settlement filed October 31, 2025. Specific settlement terms — including any financial consideration, licensing arrangement, or injunctive agreement — were not disclosed in the public record. The dismissal order preserved a 60-day window for either party to reopen the case if the settlement agreement was not perfected, a standard procedural safeguard in federal court settlement dismissals.
Legal Significance
While this case does not carry precedential weight as a litigated judgment, it contributes to the observable trend of **Chinese IP holders asserting U.S. design patents against e-commerce sellers** in American federal courts. Design patents are faster to prosecute, less expensive to obtain than utility patents, and carry significant litigation leverage — including the potential for total profits damages under 35 U.S.C. § 289, which can be particularly impactful for consumer product sellers.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in consumer product design. Choose your next step:
📋 Understand This Case’s Impact
Learn about the specific risks and implications from this litigation.
- View all related patents in this technology space
- See which companies are most active in design patents
- Understand claim construction patterns
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High Risk Area
Ornamental features of cup lids
Active Enforcement
Chinese IP owners leveraging US courts
Early Settlement
Common in design patent cases
✅ Key Takeaways
Design patent actions against individual e-commerce sellers represent an effective assertion strategy with favorable cost-to-leverage ratios.
Search related case law →The Western District of Washington offers an efficient venue for IP enforcement with an experienced patent bench.
Explore court analytics →Settlement dismissals without prejudice preserve future enforcement options — a meaningful procedural advantage for plaintiffs.
Review settlement trends →Frequently Asked Questions
The case involved U.S. Design Patent No. USD1056616S (Application No. US29/955297), covering the ornamental design of a cup lid.
Following the parties’ settlement notice filed October 31, 2025, Judge Tana Lin dismissed all claims without prejudice per standard federal court post-settlement procedure, preserving a 60-day window to reopen if the settlement was not finalized.
It reinforces that design patents on consumer products are actively enforced in U.S. federal courts and that ornamental similarity — regardless of functional copying — creates litigation exposure for e-commerce sellers.
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References
- PACER — Case No. 2:25-cv-00536, U.S. District Court for the Western District of Washington
- USPTO Patent Center — U.S. Design Patent No. USD1056616S
- Cornell Legal Information Institute — Egyptian Goddess, Inc. v. Swisa, Inc., 543 F.3d 665 (Fed. Cir. 2008)
- Cornell Legal Information Institute — 35 U.S.C. § 289
- 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.