DCT
1:23-cv-17139
Shenzhen Funsnap Technology Co Ltd v. Guilin Zhishen Information Technology Co Ltd
Key Events
Amended Complaint
Table of Contents
complaint Intelligence
I. Executive Summary and Procedural Information
- Parties & Counsel:
- Plaintiffs: Shenzhen Funsnap Technology Co. Ltd. et al. (People's Republic of China, Hong Kong SAR China)
- Defendant: Guilin Zhishen Information Technology Co., Ltd. (People's Republic of China)
- Plaintiffs' Counsel: Glacier Law LLP
- Case Identification: 1:23-cv-17139, N.D. Ill., 04/09/2024
- Venue Allegations: Venue is alleged to be proper based on the Defendant's business activities directed at consumers in the United States, including Illinois, through an interactive e-commerce store on Amazon. The Defendant is alleged to have targeted sales to Illinois residents, shipped products to Illinois, and accepted payment in U.S. dollars.
- Core Dispute: Plaintiffs seek a declaratory judgment that their "Gimbal Products" do not infringe U.S. Patent No. 11,218,047 and that the patent is invalid, following an infringement notice from the Defendant via the Amazon Patent Evaluation Express (APEX) Program.
- Technical Context: The technology relates to the design and construction of electric motors used in handheld camera stabilizers (gimbals), specifically focusing on using plastic components to reduce cost and weight.
- Key Procedural History: The lawsuit was initiated after the Defendant accused the Plaintiffs of infringement through Amazon's APEX program on or about September 11, 2023, creating a threat of product delisting. The complaint also notes that a Chinese counterpart patent, CN106849453B, has been found to be invalid.
Case Timeline
| Date | Event |
|---|---|
| 2017-04-11 | '047 Patent Priority Date |
| 2022-01-04 | '047 Patent Issue Date |
| 2023-09-11 | Plaintiffs receive Amazon APEX Program infringement notice |
| 2024-04-09 | Amended Complaint Filed |
II. Technology and Patent(s)-in-Suit Analysis
U.S. Patent No. 11,218,047 - "Plastic Motor For Handheld Stabilizer"
- Patent Identification: U.S. Patent No. 11,218,047, "Plastic Motor For Handheld Stabilizer," issued January 4, 2022.
The Invention Explained
- Problem Addressed: The patent's background section notes that conventional motors for handheld stabilizers were typically made of metal, which resulted in high costs, long production cycles, heavy weight, and difficulty in threading wires through the assembly '047 Patent, col. 1:25-33
- The Patented Solution: The invention proposes a motor where key structural components-such as the motor shell, motor end cover, or iron core carrier-are made of plastic instead of metal '047 Patent, abstract This assembly includes a hollow metal motor shaft that passes through the internal components, which is intended to facilitate the threading of wires '047 Patent, abstract '047 Patent, col. 3:33-37 The goal is to create a motor that is cheaper, lighter, and easier to manufacture '047 Patent, col. 3:27-30
- Technical Importance: By replacing metal with plastic for major components, the invention aimed to reduce the price and complexity of handheld stabilizers, thereby aiding their wider adoption and popularization '047 Patent, col. 1:31-33
Key Claims at a Glance
- The complaint asserts non-infringement and invalidity of claims 1-19, focusing its non-infringement argument on the sole independent claim, Claim 1 Compl. ¶28 Compl. ¶29
- The essential elements of asserted independent Claim 1 include:
- a motor shell;
- a hollow metal motor shaft, wherein one end of the hollow metal motor shaft is fixedly connected to the motor shell;
- a motor end cover;
- motor iron cores;
- an iron core carrier, wherein one end of the iron core carrier is detachably connected to the motor end cover and the other end thereof carries the motor iron cores, and at least one of the iron core carrier, the motor shell and the motor end cover is made of plastic material;
- an upper bearing and a lower bearing, wherein the upper bearing and the lower bearing are fixed on the iron core carrier, and the hollow metal motor shaft passes through the upper bearing, the iron core carrier and the lower bearing;
- wherein a stopping component fixedly connected with an inner side of the motor shell is provided on an outer side of one end of the hollow metal motor shaft; and
- wherein the motor shell is made of plastic material, and the connection between one end of the hollow metal motor shaft and the motor shell is injection molding connection, glue connection or interference connection.
- The complaint notes that if independent Claim 1 is not infringed, then dependent claims 2-19 are also not infringed Compl. ¶28
III. The Accused Instrumentality
Product Identification
The accused instrumentalities are referred to as "Gimbal Products" sold by the various Plaintiffs on the Amazon marketplace under storefronts including FUNSNAP Official, iSleeky, glorypeaceUS, and AOCHUANGimbal Compl. ¶¶14-18 Specific products are identified by Amazon Standard Identification Numbers (ASINs) Compl. ¶¶14-18
Functionality and Market Context
The complaint provides minimal technical detail on the functionality of the accused Gimbal Products. It positions them as competitive products in the U.S. market, with the Amazon marketplace constituting the Plaintiffs' primary sales channel Compl. ¶19 The infringement dispute is framed around the specific construction of these products, rather than their general function as camera stabilizers. No probative visual evidence provided in complaint.
IV. Analysis of Infringement Allegations
This lawsuit is a declaratory judgment action where Plaintiffs allege their products do not infringe. The complaint does not contain a detailed element-by-element analysis of infringement. Instead, it makes a general assertion of non-infringement and highlights one specific limitation that is allegedly not met.
'047 Patent Infringement Allegations
| Claim Element (from Independent Claim 1) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| a motor shell | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:20-21 |
| a hollow metal motor shaft, wherein one end of the hollow metal motor shaft is fixedly connected to the motor shell | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:21-24 |
| a motor end cover | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:25 |
| motor iron cores | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:26 |
| an iron core carrier, wherein one end of the iron core carrier is detachably connected to the motor end cover and the other end thereof carries the motor iron cores... | Plaintiff specifically alleges its Gimbal Products do not meet the limitation that "one end of the iron core carrier is detachably connected to the motor end cover." | ¶29 | col. 10:27-33 |
| an upper bearing and a lower bearing...and the hollow metal motor shaft passes through... | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:34-39 |
| wherein a stopping component fixedly connected with an inner side of the motor shell is provided on an outer side of one end of the hollow metal motor shaft | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:40-44 |
| wherein the motor shell is made of plastic material, and the connection between one end of the hollow metal motor shaft and the motor shell is injection molding connection, glue connection or interference connection | The complaint does not provide specific functionality details but alleges general non-infringement of Claim 1. | ¶28 | col. 10:45-50 |
Identified Points of Contention
- Definitional Question: The primary point of contention identified in the complaint is whether the connection between the iron core carrier and the motor end cover in the Plaintiffs' Gimbal Products falls within the scope of the term "detachably connected" as used in Claim 1 Compl. ¶29
- Evidentiary Question: The complaint's lack of a detailed infringement analysis raises the question of what evidence Plaintiffs will present to demonstrate that their products' specific construction methods differ from the requirements of the other claim limitations.
V. Key Claim Terms for Construction
The complaint explicitly singles out one term as a basis for non-infringement, making its construction central to the dispute.
- The Term: "detachably connected"
- Context and Importance: This term is critical because it is the sole limitation the Plaintiffs explicitly identify as not being met by their Gimbal Products Compl. ¶29 The outcome of the non-infringement claim may hinge on how this term is defined and applied to the accused products' assembly. Practitioners may focus on this term because it appears to be the lynchpin of the Plaintiffs' non-infringement theory.
- Intrinsic Evidence for Interpretation:
- Evidence for a Broader Interpretation: The patent specification does not appear to provide an explicit definition for "detachably connected", which could support an argument for applying its plain and ordinary meaning, potentially encompassing any non-permanent method of joining two components.
- Evidence for a Narrower Interpretation: The patent describes a specific embodiment where "the nuts 11 can be fastened in the threaded holes 54 after passing through the through holes in the motor end cover 1, so that the iron core carrier 5 is detachably connected to the motor end cover 1" '047 Patent, col. 6:49-54 A party could argue that this specific disclosure of a nut-and-bolt mechanism limits the scope of "detachably connected" to similar mechanical fasteners, as opposed to other methods like snap-fits or friction-fits.
VI. Other Allegations
- Indirect Infringement: The complaint requests a declaration that the Gimbal Products do not infringe "either directly or indirectly" Compl. ¶31, but it does not allege specific facts related to theories of induced or contributory infringement.
- Willful Infringement: This allegation is not applicable, as this is a declaratory judgment action for non-infringement brought by the accused infringer.
VII. Analyst's Conclusion: Key Questions for the Case
- A core issue will be one of claim construction: how will the court construe the term "detachably connected"? Will its meaning be limited to the screw-based embodiment disclosed in the patent, or will it be given a broader interpretation that could potentially read on the connection method used in the Plaintiffs' products?
- A second central issue is patent validity: the complaint dedicates significant attention to invalidity, presenting numerous prior art combinations that allegedly render the patent's claims obvious Compl. ¶¶34-77 A key question is whether the court will find these detailed obviousness arguments, bolstered by the alleged invalidity of the Chinese counterpart patent Compl. ¶2, sufficient to invalidate the '047 patent, which could make the infringement analysis moot.
- A final question concerns evidence: given the sparse factual allegations regarding the technical makeup of the accused "Gimbal Products," the case will turn on what discovery reveals about their actual construction and how that construction compares to both the asserted claims and the prior art.
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