US 12,465,872 Electric Toy Patent TRO Case Analysis: 22 Amazon Seller Accounts Sued — How to Avoid? | Fuzhou Mingzhi Trademark & Patent (Case No.: 1:26-cv-26182)

US TRO New Case Analysis: US 12,465,872 Electric Toy Patent Infringement Lawsuit Targets 22 Amazon Seller Accounts

I. Case Overview

On 2026/9/8, the U.S. District Court for the Southern District of Florida accepted a patent infringement lawsuit (Case No. 1:26-cv-26182). Plaintiff Shaoqing Lin, the sole inventor and patent owner of U.S. Patent 12,465,872 B2, titled "Multi-Stage Synchronous Driving Mechanism and Electric Toy," represented by Palmer Law Group, P.A., filed suit against the 22 Amazon stores listed in Schedule A.

The accused product is an electric toy featuring lights and multiple tentacles that rotate and sway in synchronization (commonly known as "dancing jellyfish/octopus toys"). The plaintiff alleges they purchased the defendant's product, disassembled it, measured it, and took photos for comparison, asserting that the defendant's product falls within the scope of protection of Claim 1 (multi-stage synchronous drive mechanism) and Claim 14 (electric toy with light-emitting components). The claims seek a permanent injunction, damages, punitive damages up to three times willful infringement, disgorgement of infringer profits, and attorney fees. As of early 9 of 2026, according to publicly available information, the court has not issued a Temporary Restraining Order (TRO), and the case remains in its initial filing stage.

II. Analysis of the Patent Technical Solution Involved in the Case

US 12,465,872 B2 was granted by the USPTO on 2025/11/11, with a US filing date of 2025/5/28. It claims priority to a Chinese utility model application filed on 2024/11/15 (application no. 202422799628.4). The patent includes 14 claims and 5 drawing pages.

The technical problem addressed by this patent is that traditional toys requiring coordinated motion of multiple components often necessitate additional power units or complex linkage mechanisms, resulting in increased costs and reduced structural flexibility. The core solution involves a single motor driving a central sun gear via a gear transmission assembly (worm gear + multi-stage transmission gears + torque gear). The sun gear meshes with multiple planetary gears simultaneously. Each planetary gear, through a "stopper column–stopper slot" engagement, individually drives one execution unit (insert post + stopper plate + free arm), causing all execution units to rotate synchronously relative to the housing. Claim 14 further specifies several light-emitting components located inside the housing and correspondingly mounted on the support member.

Unlike design patents, infringement of utility patents is determined by comparing each technical feature in the claims and may apply the doctrine of equivalents. Therefore, assessing infringement based solely on product appearance or listing images is insufficient; a detailed analysis of the internal transmission structure is required.

III. Feasible Workarounds and Improvement Directions

Based on the limiting features of claims 1 and 14, here are six preliminary design-around strategies and product improvement directions:

•1. Change in meshing relationship: Switch the planet gears to mesh with the ring gear, or use two independent central gears for separate zone drive. This ensures the product no longer has the characteristic "each planet gear meshes with the sun gear."

•2. Change of drive medium: Replace gear meshing with synchronous belt drives, linkage mechanisms, or magnetic couplings.

• 3. Structural Change: The planetary gear and actuator are now integrally molded or connected via D-shaped shaft holes, splines, or interference fits. The previous "planetary gear sleeve mounted on the插柱" and "stop post–stop groove" configurations have been eliminated.

•4. Limiting Method Change: Eliminate the movable abutment between the stop plate and support member; use circlips, shaft shoulders, or bearing housings for limiting. The swing arm may also be designed to not penetrate the support member.

• 5. Lighting Layout Revision: In response to Claim 14, relocate the light-emitting component to the exterior of the housing or the end of the swing arm, or remove the lighting configuration entirely.

• 6. Enhanced Patent Strategy: Build defensive and countermeasure capabilities by securing proprietary patents for innovations layered atop avoidance strategies, including modular quick-release swing arms, magnetic interchangeable tentacles, encoder-based closed-loop synchronization control, voice/APP programming, and audio-visual linkage control methods.

Disclaimer: The above analysis is preliminary based on patent text and does not constitute legal advice. Specific infringement risks and feasibility of avoidance for a product require a feature-by-feature comparison against the actual structure, along with an assessment under the doctrine of equivalents.

IV. Risk Notice for Relevant Sellers

• This case is filed under Schedule A. The plaintiff typically files for an ex parte TRO and asset freeze alongside the complaint, posing a risk of account fund freezing for the relevant stores.

• Sellers of electric rotating, crawling, and light-up toys are advised to conduct an internal structural self-check on all current and in-stock products as soon as possible.

• Respond formally within 21 days of receiving a platform notice or court document to avoid account fund deductions due to default judgment.

• Sellers with frozen accounts should promptly engage a qualified attorney to evaluate litigation or settlement options and capitalize on the early negotiation window.

V. Services We Offer

[Fuzhou Mingzhi Trademark & Patent] Specializes in intellectual property for cross-border e-commerce. Our services include:

• Freedom-to-Operate (FTO) Risk Assessment: Itemized claim comparison based on physical teardown, with professional analysis provided.

• Patent Avoidance Design Guidance: Deliver actionable avoidance strategies by aligning product structure with patent landscapes in target markets.

• TRO Response and Settlement: Collaborate with U.S. attorneys to handle injunction defense, settlement negotiations, and fund unfreezing.

• China-U.S. Patent Strategy: End-to-end services for invention, utility model, and design patents, plus PCT and U.S. patent filings.

For a case-specific assessment of this matter or your product, please contact us via 13305000901 or leave a message on our website. A professional consultant will respond as soon as possible.

Disclaimer: This content is compiled from publicly available judicial documents and patent literature for reference only and does not constitute legal advice. For the latest case developments, refer to the court's public records.