Dynacap LLC v. Apple Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: DynaCap LLC (Texas)
  • Defendant: Apple Inc. (California); STMicroelectronics N.V. (Netherlands); STMicroelectronics, Inc. (Delaware)
  • Plaintiff’s Counsel: DiNovo Price LLP; Griffith Barbee PLLC
• Case Identification: 1:25-cv-01768, W.D. Tex., 02/19/2026
• Venue Allegations: Plaintiff asserts venue is proper in the Western District of Texas based on Apple's two Austin campuses, engineering center, and numerous retail stores, as well as its employment of hundreds of engineers in Austin who work on accused products. Venue over STMicroelectronics is based on its offices and distributors located in Austin.
• Core Dispute: Plaintiff alleges that certain Apple iPhones and iPads, which incorporate semiconductor components manufactured by STMicroelectronics, infringe three expired patents related to the structure and fabrication of embedded microelectronic capacitors.
• Technical Context: The patents address methods for designing capacitors directly within semiconductor substrates or circuit boards to improve performance and save space in miniaturized, high-frequency electronics.
• Key Procedural History: The complaint states that all three patents-in-suit have expired, meaning the case is limited to claims for past monetary damages and does not seek injunctive relief.

Case Timeline

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

U.S. Patent No. 6,813,138 - "`Embedded Microelectronic Capacitor Equipped with Geometrically-Centered Electrodes and Method of Fabrication`"

• Patent Identification: U.S. Patent No. 6,813,138, "Embedded Microelectronic Capacitor Equipped with Geometrically-Centered Electrodes and Method of Fabrication," issued November 2, 2004.

The Invention Explained

• Problem Addressed: The patent describes that conventional methods for connecting embedded capacitors, such as "edge connection," occupy significant circuit real estate and introduce parasitic electrical effects (Compl. ¶28; ’138 Patent, col. 1:27-65). These effects degrade the capacitor's performance at high frequencies, lowering its "self-vibration frequency" and making it unsuitable for modern high-speed circuits ’138 Patent, col. 1:40-47
• The Patented Solution: The invention proposes a capacitor structure where the electrical connection is made through a "via" (a vertical conductor) positioned near the geometric center of the capacitor's plates, rather than at the edge Compl. ¶28 ’138 Patent, col. 2:12-25 As illustrated in the patent's figures and the complaint's technical overview, this central connection aims to create more balanced electrical paths, which improves high-frequency performance and simplifies integration with surrounding components ’138 Patent, col. 4:35-42
• Technical Importance: By improving the high-frequency characteristics of embedded capacitors, this design approach sought to enable greater miniaturization and higher performance in digital and analog circuits ’138 Patent, col. 1:40-47

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶31
• Claim 1 describes an embedded capacitor comprising:
  • An upper electrode plate of a first polarity.
  • A middle electrode plate of an opposite polarity with an aperture through it.
  • At least one lower electrode plate of the first polarity.
  • A via providing electrical communication between the upper and lower plates, which passes through the middle plate's aperture without shorting to it.
  • The via is positioned at a distance from the geometric center of the middle plate that is "not larger than 50% of a diameter of said middle electrode plate."
  • A first electrical lead connected to an edge portion of the upper plate.
  • The plates are embedded parallel to each other in a dielectric material.

U.S. Patent No. 6,969,912 - "`Embedded Microelectronic Capacitor Incorporating Ground Shielding Layers and Method for Fabrication`"

• Patent Identification: U.S. Patent No. 6,969,912, "Embedded Microelectronic Capacitor Incorporating Ground Shielding Layers and Method for Fabrication," issued November 29, 2005.

The Invention Explained

• Problem Addressed: The patent notes that as microelectronic components are fabricated in ever-closer proximity, they can create undesirable parasitic effects and "cross-talk," where signals from one component interfere with another (Compl. ¶29; ’912 Patent, col. 2:17-25). This interference can degrade signal integrity and cause circuit malfunctions.
• The Patented Solution: The invention proposes incorporating dedicated "ground shielding layers" into the structure of an embedded capacitor Compl. ¶29 These conductive layers, as depicted in the complaint's excerpt of Figure 5B, are designed to isolate the capacitor's active electrode plate from surrounding circuitry, thereby "maintaining signal integrity and reducing cross-talk" ’912 Patent, col. 2:30-34
• Technical Importance: This technology addresses a fundamental challenge in high-density electronic packaging by providing a structural means to mitigate signal interference, which is critical for the reliable operation of complex integrated circuits ’912 Patent, col. 2:12-19

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶31
• Claim 1 describes an embedded capacitor comprising:
  • An upper ground shielding layer with an aperture.
  • An electrode plate positioned apart from the upper ground shielding layer.
  • A via extending from the electrode plate up through the aperture in the shielding layer to provide electrical communication.
  • A middle ground shielding layer positioned in the same plane as, and surrounding, the electrode plate.
  • A dielectric material embedding the upper and middle ground shielding layers.

U.S. Patent No. 7,035,082 - "`Structure of Multi-Electrode Capacitor and Method for Manufacturing Process of the Same`"

• Patent Identification: U.S. Patent No. 7,035,082, "Structure of Multi-Electrode Capacitor and Method for Manufacturing Process of the Same," issued April 25, 2006.
• Technology Synopsis: The patent is directed to increasing capacitance within a limited area on a printed circuit board (PCB), particularly for decoupling applications Compl. ¶30 The invention proposes using an "edge-coupled effect" generated between a plurality of adjacent metal laminates, which together form a multi-electrode capacitor, to provide more efficient capacitance in a smaller footprint (’082 Patent, col. 2:40-44).
• Asserted Claims: The complaint asserts independent claim 5 Compl. ¶31
• Accused Features: The complaint alleges that multi-electrode capacitors within the accused products, identified as "Capacitor 1" in teardown images of an iPhone 12 Pro camera sensor, infringe by comprising multiple conducting layers (L2-L6) that are separated by spaces (Compl. ¶¶43, 20).

III. The Accused Instrumentality

Product Identification

The complaint identifies two categories of accused instrumentalities: "Accused Apple Products" and "Accused STMicro Products" (Compl. ¶¶31, 46). The Apple products include specific models of the iPhone (XR, 11, 12, and 13 series) and iPad (5th/8th gen, Mini 4/5th gen) Compl. ¶31 The STMicro products are semiconductor components, such as MEMS sensors, allegedly incorporated into the Apple devices. Examples include infrared camera sensors (part no. 56G08A), ambient light sensors, and gyroscopes (Compl. ¶¶20, 46).

Functionality and Market Context

The infringement allegations focus on the internal structure of embedded microelectronic capacitors within these components. The complaint provides detailed analyses of capacitors found in the wide-angle camera sensor of an iPhone 12 Pro and an infrared camera sensor from an iPhone 11 Pro Max (Compl. ¶¶33, 47). The complaint alleges that STMicro manufactures and supplies these infringing components, which Apple then integrates into its consumer electronic devices Compl. ¶¶20-21 A table provided in the complaint identifies STMicroelectronics as the supplier of the "TrueDepth Infrared Camera" chip for the iPhone 11 Compl. p. 23

IV. Analysis of Infringement Allegations

U.S. Patent No. 6,813,138 Infringement Allegations

• Identified Points of Contention:
  • Scope Questions: A potential issue is whether the complex, multi-layered capacitor structures shown in the complaint's images Compl. p. 14 can be accurately characterized as the distinct "upper," "middle," and "lower" electrode plates required by the claim's relatively simple three-plate architecture.
  • Technical Questions: The complaint asserts that the via position meets the claim's geometric constraint of being "not larger than 50% of a diameter" from the center of the middle plate. However, the visual evidence provided Compl. p. 16 presents a 2D depiction that may require extrinsic evidence or expert analysis to definitively establish the geometric center and relative distances to substantiate this crucial limitation.

U.S. Patent No. 6,969,912 Infringement Allegations

• Identified Points of Contention:
  • Scope Questions: The definition of "in the same plane" may become a point of contention. The parties may dispute whether minor variations in vertical position resulting from the manufacturing process preclude two structures from being considered co-planar as required by the claim.
  • Technical Questions: The infringement read depends on the interpretation of the 2D images. A key question will be whether the structure identified as the "middle ground shielding layer" actually "surrounds" the electrode plate in a manner sufficient to meet the claim limitation, and whether the via passes through the "aperture" in the "upper ground shielding layer" without shorting, as alleged.

V. Key Claim Terms for Construction

For the ’138 Patent:

• The Term: "a distance from a geometric center of said middle electrode plate of not larger than 50% of a diameter of said middle electrode plate"
• Context and Importance: This term defines the core novelty of the patent—moving the connection point from the edge to a more central location. The infringement case for the ’138 Patent hinges on whether the accused via placement falls within this specific geometric boundary.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim language itself provides a clear numerical boundary ("not larger than 50%"), suggesting any position within that radius infringes. The specification’s goal is to improve upon far-edge connections, which supports construing the claim to cover any connection that is substantially more central than the prior art, not just those at the exact geometric center ’138 Patent, col. 1:56-65
  • Evidence for a Narrower Interpretation: The patent title, abstract, and summary repeatedly use the phrase "geometrically-centered" ’138 Patent, abstract A defendant may argue that this context requires the via to be positioned substantially close to the center to achieve the patent's stated benefits of a balanced circuit, and that a position at the 50% limit may not fulfill the invention's purpose.

For the ’912 Patent:

• The Term: "a middle ground shielding layer positioned in the same plane of said electrode plate and surrounding while spaced-apart"
• Context and Importance: This term describes the specific spatial relationship between the functional electrode plate and a key shielding element. Infringement depends entirely on whether the accused structures satisfy the conditions of being co-planar, surrounding, and spaced-apart.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The patent does not define "in the same plane" with atomic precision. A plaintiff could argue that it refers to structures fabricated on the same layer of a substrate, which may have minor, inherent topographical differences. Similarly, "surrounding" could be interpreted to mean being adjacent to the sides of the plate within that layer, not necessarily forming a complete, unbroken enclosure.
  • Evidence for a Narrower Interpretation: A defendant could argue that to achieve the stated goal of reducing cross-talk, "surrounding" must mean a structure that substantially or completely encloses the electrode plate on its sides. Figures in the patent, such as the depiction of layer 42 relative to plate 22 in FIG. 2B, may be used to argue that the intended structure is a complete frame ’912 Patent, FIG. 2B

VI. Other Allegations

• Indirect Infringement: The complaint's three counts are explicitly for direct infringement under 35 U.S.C. § 271(a) (Compl. ¶¶61, 64, 67). The complaint does not plead separate counts for induced or contributory infringement.
• Willful Infringement: The complaint does not contain the word "willful" or allege that Defendants had pre-suit knowledge of the patents. However, the Prayer for Relief requests an award of enhanced damages "up to three times the amount found" pursuant to 35 U.S.C. § 284, which is the statutory basis for such an award Compl. ¶70.b

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

• A core issue will be one of structural interpretation: Can the complex, multi-layered capacitor architectures identified within the accused camera sensors be mapped onto the more simplified component arrangements recited in the patent claims, such as the three-plate "upper-middle-lower" structure of the ’138 Patent and the specific co-planar shielding geometry of the ’912 Patent?
• A key evidentiary question will be one of geometric proof: What technical evidence will be required to substantiate the infringement allegations, which currently rely on 2D cross-sectional images? Specifically, proving that an accused via meets the precise positional limitation ("not larger than 50% of a diameter" from the center) of the ’138 patent's claim may require sophisticated measurement and analysis beyond the provided visuals.
• As all patents-in-suit have expired, the litigation will focus entirely on quantifying past damages. This raises the question of how to apportion the value of the patented capacitor technology, a fundamental sub-component, relative to the value of the integrated sensors it is part of and the highly successful consumer end-products.