Shenzhen Jing Cheng Dianzi Keji Yanfa Co Ltd v. Spectrum Products LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Shenzhen Jing Cheng Dianzhi Keji YanFa Company Limited (China)
  • Defendant: Spectrum Products, LLC (Arizona)
  • Plaintiff's Counsel: Avek IP, LLC
• Case Identification: 2:26-cv-00445, D. Ariz., 03/31/2026
• Venue Allegations: Venue is alleged to be proper as Defendant is a resident of and maintains a principal place of business within the District of Arizona.
• Core Dispute: Plaintiff seeks a declaratory judgment that its airflow deflection products do not infringe Defendant's patent and/or that the patent is invalid.
• Technical Context: The technology concerns magnetic, adjustable air vent deflectors designed to redirect airflow from HVAC systems for improved heating and cooling efficiency.
• Key Procedural History: The action was precipitated by an intellectual property complaint filed by Defendant with Amazon.com, which resulted in the removal of Plaintiff's products from the platform and created an actual controversy between the parties. The complaint references the patent examiner's "Reasons for Allowance" to support its proposed claim construction for non-infringement and its arguments for invalidity.

Case Timeline

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 12,000,616 - "Air deflector system"

• Patent Identification: U.S. Patent No. 12,000,616, "Air deflector system", issued June 4, 2024 (the "'616 Patent").

The Invention Explained

• Problem Addressed: The patent seeks to improve ventilation accessories that redirect airflow from vents, which can enhance the efficiency of heating or cooling a space by directing conditioned air toward the center of a room and away from walls '616 Patent, col. 1:24-29
• The Patented Solution: The invention is an adjustable air deflector that uses a specific magnetic mounting system. The system features a "magnet retainer" extending from the deflector's sidewall, which includes two retainer walls and ledges designed to hold a magnet '616 Patent, abstract The claims specify the magnet's geometry, particularly that it comprises "a largest planar surface and an exposed surface opposite the largest planar surface," and that this exposed surface is configured to form the magnetic bond with an external surface like a vent grille '616 Patent, col. 8:50-64 Figure 15 illustrates the magnet (10) held within the retainer walls (14, 16) '616 Patent, Fig. 15
• Technical Importance: The claimed configuration suggests an intent to optimize the magnetic attachment force by orienting the magnet's largest surface to make contact with the vent, as this orientation generally provides the strongest bond Compl. ¶20

Key Claims at a Glance

• The complaint asserts non-infringement and/or invalidity of all claims, focusing on independent claims 1, 10, and 15 Compl. ¶17 Compl. ¶25 Compl. ¶26
• Independent Claim 1 elements:
  • An air deflector comprising: a first sidewall and a second sidewall;
  • a magnet retainer extending from the first sidewall, the magnet retainer comprising a first retainer wall and a second retainer wall;
  • a magnet configured to be positioned between the first retainer wall and the second retainer wall, the magnet comprising a largest planar surface and an exposed surface opposite the largest planar surface;
  • wherein the first retainer wall and the second retainer wall each comprise a ledge configured to directly couple to the magnet;
  • wherein the exposed surface is configured to form a magnetic bond with and face an external surface when the magnet is coupled between the first retainer wall and the second retainer wall.
• The complaint notes that infringement of dependent claims 2-9 is precluded by non-infringement of claim 1 Compl. ¶24

III. The Accused Instrumentality

Product Identification

The complaint identifies "airflow deflection devices" sold by Plaintiff through its website and on Amazon.com under various Amazon Standard Identification Numbers (ASINs) Compl. ¶12 Compl. ¶13

Functionality and Market Context

The products are described as devices that magnetically attach to an air vent to redirect airflow Compl. ¶12 The complaint includes an image of the products, showing transparent, curved plastic deflectors. Compl. p. 4 The core of the non-infringement argument centers on the specific shape of the magnets used in these products Compl. ¶21 The complaint alleges that Defendant's infringement assertions to Amazon.com have caused Plaintiff's products to be removed from the platform, threatening the destruction of existing inventory Compl. ¶14 Compl. ¶15

IV. Analysis of Infringement Allegations

The complaint seeks a declaratory judgment of non-infringement. The central allegation is that the Plaintiff's products do not meet a key limitation present in all asserted independent claims regarding the magnet's geometry.

'616 Patent Infringement Allegations

Identified Points of Contention

• Scope Questions: The primary dispute will concern the proper construction of the claim term "a largest planar surface." A central question for the court will be whether this term requires a unique largest surface, or if it can be read on a magnet that has two or more equally-sized largest surfaces. The Plaintiff's non-infringement theory rests on the former interpretation Compl. ¶24
• Technical Questions: The complaint provides a photograph of the accused magnet, identifying its different faces to support the argument that the top and bottom faces are identical in area. Compl. p. 7 The complaint also provides an annotated version of the patent's Figure 15, arguing it depicts a magnet with one largest planar surface (A) opposite a smaller exposed surface (B), which differs from the accused product. Compl. p. 6 A factual question may arise regarding the precise dimensions and configuration of the magnets in the accused products. Another image shows the magnet installed in the deflector, illustrating that one of the largest faces serves as the exposed surface. Compl. p. 8

V. Key Claim Terms for Construction

• The Term: "a largest planar surface"
• Context and Importance: The construction of this term is dispositive of the non-infringement argument. Plaintiff alleges its magnets are rectangular prisms where the two largest faces are equal in area, and thus there is no singular "largest planar surface" as, in its view, the claim requires Compl. ¶24 Practitioners may focus on this term because the use of the indefinite article "a" combined with the superlative "largest" creates ambiguity as to whether uniqueness is required.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: A defendant-patentee could argue that "a" simply means "one or more" and that the term is met so long as the magnet possesses a surface that is largest, even if not uniquely so. The claim language does not explicitly state "a single largest planar surface."
  • Evidence for a Narrower Interpretation: The complaint argues that the patent figures and the prosecution history support a narrower reading requiring a unique largest surface Compl. ¶19 Compl. ¶20 The complaint cites the examiner's "Reasons for Allowance," which allegedly distinguished prior art based on the principle that the "strongest magnetic bond is formed" when the largest planar surface is the connection point, suggesting a focus on a specific, singular surface for optimized attachment Compl. ¶20

VI. Other Allegations

This section is not applicable as the complaint is for a declaratory judgment of non-infringement and invalidity, and does not contain allegations of indirect or willful infringement by the patentee against the DJ plaintiff. The complaint does allege that Defendant's actions constitute an "exceptional case" warranting an award of attorney's fees, based on the theory that Defendant knew or should have known its infringement accusations were baseless Compl. ¶31 Compl. ¶33

VII. Analyst's Conclusion: Key Questions for the Case

• A core issue will be one of definitional scope: Does the claim term "a largest planar surface" require the magnet to have a unique, singular largest surface, or can the limitation be met by a magnet, such as the accused rectangular prism, that possesses two equally-sized largest surfaces?
• A second key issue will involve the impact of prosecution history: To what extent does the patent examiner's reasoning in the "Reasons for Allowance"-which focused on using the largest surface to create the "strongest magnetic bond"-limit the scope of the claims and support a construction that excludes the accused product's magnet configuration?
• A third, contingent question relates to invalidity: If the claims are construed broadly enough to read on the accused products, does that same broad construction render the claims invalid as either anticipated by prior art like the CN '188 patent or obvious in light of previously available products combined with common knowledge regarding the use of magnets?