Induction Devices LLC v. Costco Wholesale Corp

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Induction Devices LLC (Texas)
  • Defendant: Costco Wholesale Corporation (Washington)
  • Plaintiff's Counsel: Shea | Beaty PLLC
• Case Identification: 2:26-cv-00246, E.D. Tex., 03/24/2026
• Venue Allegations: Plaintiff alleges venue is proper in the Eastern District of Texas because Defendant conducts regular business, solicits business, and sells products in the district, and the cause of action arises from these contacts.
• Core Dispute: Plaintiff alleges that Defendant's branded contactless consumer credit cards indirectly infringe five patents covering diverse aspects of semiconductor technology, including circuit reset logic, signal multiplexing, secure memory systems, and digital signal processing.
• Technical Context: The patents-in-suit relate to foundational technologies for integrated circuits, which are critical components in smart cards, mobile devices, and other complex electronics.
• Key Procedural History: The complaint notes that U.S. Patent No. 7,889,145 was previously litigated in the Western District of Texas but that the cases were resolved before any substantive matters were addressed, suggesting the patent's validity and scope have not been tested in court.

Case Timeline

Date	Event
2005-06-01	U.S. Patent No. 7,889,145 Priority Date
2006-01-26	U.S. Patent No. 7,449,926 Priority Date
2006-12-21	U.S. Patent No. 8,190,885 Priority Date
2007-03-09	U.S. Patent No. 8,370,543 Priority Date
2007-04-17	U.S. Patent No. 8,543,628 Priority Date
2008-11-11	U.S. Patent No. 7,449,926 Issued
2011-02-15	U.S. Patent No. 7,889,145 Issued
2012-05-29	U.S. Patent No. 8,190,885 Issued
2013-02-05	U.S. Patent No. 8,370,543 Issued
2013-09-24	U.S. Patent No. 8,543,628 Issued
2026-03-24	Complaint Filing Date

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

U.S. Patent No. 7,449,926 - "Circuit for Asynchronously Resetting Synchronous Circuit"

• Issued: November 11, 2008

The Invention Explained

• Problem Addressed: The patent addresses the challenge of resetting synchronous circuits, such as a CPU, in a semiconductor device U.S. Patent No. 7,449,926, col. 1:17-24 An asynchronous reset can immediately initialize a malfunctioning circuit, but may cause data loss in memory components like RAM; conversely, a synchronous reset can preserve data but may not be effective if the circuit is operating abnormally U.S. Patent No. 7,449,926, col. 1:36-44
• The Patented Solution: The invention is a reset signal generation circuit that includes an "operation detection circuit" to determine if a synchronous circuit is operating normally or abnormally '926 Patent, abstract Based on this detection, a signal control circuit selectively generates either a synchronous reset signal (during normal operation, preserving data) or an asynchronous reset signal (during abnormal operation, for immediate initialization) '926 Patent, col. 6:58-7:6
• Technical Importance: This approach provides a more robust and reliable method for managing system resets in complex integrated circuits by dynamically choosing the appropriate reset type to balance data integrity with system stability.

Key Claims at a Glance

• The complaint asserts at least independent claim 1 Compl. ¶33
• Claim 1 of the '926 Patent requires:
  • A reset signal generation circuit for providing a first reset signal to a synchronous circuit that operates with a clock signal.
  • An "operation detection circuit" for detecting whether the synchronous circuit is operating normally or abnormally and generating an operation detection signal.
  • A "signal control circuit", connected to the operation detection circuit, for generating the first reset signal based on a system reset signal, the clock signal, and the operation detection signal.
  • The signal control circuit generates a synchronous first reset signal when the circuit operates normally, and an asynchronous first reset signal when it operates abnormally.

U.S. Patent No. 7,889,145 - "Circuit, System, and Method for Multiplexing Signals with Reduced Jitter"

• Issued: February 15, 2011

The Invention Explained

• Problem Addressed: The patent's background describes how the function of an RFID transponder can be detrimentally affected when it is placed near a metal component, as the metal can absorb electromagnetic energy and suppress communication U.S. Patent No. 7,889,145, col. 1:48-59
• The Patented Solution: The invention proposes forming an antenna for the transponder by means of a "recess" within the metal component itself '145 Patent, abstract '145 Patent, col. 2:14-20 This allows the radiation characteristics of the antenna to be defined by the geometry of the recess, effectively integrating the antenna with the metal object it is attached to. The specification describes various forms for the recess, including extended slots and ring segments '145 Patent, col. 2:55-65
• Technical Importance: This technology enables the effective use of RFID transponders on or in metallic objects, a historically challenging application, by turning the problematic metal component into a functional part of the antenna system.

Key Claims at a Glance

• The complaint asserts at least independent claim 10 Compl. ¶43
• Claim 10 of the '145 Patent requires:
  • An arrangement with a transponder and an allocated metal component.
  • An aerial for the transponder is formed by means of a recess in the metal component.
  • The recess in the metal component has the form of a "ring segment".

U.S. Patent No. 8,190,885 - "Non-Volatile Memory Sub-System Integrated with Security for Storing Near Field Transactions"

• Issued: May 29, 2012
• Technology Synopsis: The patent describes a memory module that integrates a security processor, non-volatile memory, and a Near Field Communication (NFC) component Compl. ¶21 This creates a secure execution environment where NFC transaction data can be securely stored, processed, and logged, with access controlled by the integrated security processor Compl. ¶¶21-22
• Asserted Claims: At least claims 1 and 3 Compl. ¶53
• Accused Features: The complaint alleges that branded contactless consumer credit cards, which perform secure NFC transactions, infringe this patent Compl. ¶53

U.S. Patent No. 8,370,543 - "Busy Detection Logic for Asynchronous Communication Port"

• Issued: February 5, 2013
• Technology Synopsis: The invention relates to synchronizing access to a resource (like a memory device) between components operating in different and independent time domains (e.g., a fast processor and a slower memory) Compl. ¶25 The patented system achieves this synchronization without requiring high-speed clocks or imposing minimum pulse width requirements on control signals, which reduces circuit complexity, cost, and power consumption Compl. ¶¶26-27
• Asserted Claims: At least claim 16 Compl. ¶63
• Accused Features: The complaint alleges that the internal architecture of branded contactless consumer credit cards, which must manage communication between different internal components, infringes this patent Compl. ¶63

U.S. Patent No. 8,543,628 - "Method and System of Digital Signal Processing"

• Issued: September 24, 2013
• Technology Synopsis: The patent is directed to a programmable system on a chip with a dynamically reconfigurable digital filtering system Compl. ¶30 In this system, a microcontroller provides instruction sets that configure a controller and an address-calculation device to select filter-coefficient addresses. A separate data path device then uses these coefficients to perform digital signal processing on incoming data, enabling efficient and flexible reconfiguration Compl. ¶¶30-31
• Asserted Claims: At least claim 1 Compl. ¶73
• Accused Features: The complaint alleges that the processing capabilities within branded contactless consumer credit cards infringe this patent Compl. ¶73

III. The Accused Instrumentality

Product Identification

• The accused instrumentalities are "branded contactless consumer credit cards" that Defendant provides and supports Compl. ¶33

Functionality and Market Context

• These are payment cards equipped with chips and antennas that use Near Field Communication (NFC) or a similar radio-frequency identification (RFID) technology. This allows users to complete a transaction by tapping or holding the card near a compatible payment terminal. The complaint alleges these cards contain complex integrated circuits, including processors, memory, and security features, that perform the functions described in the five asserted patents Compl. ¶¶33-81 The complaint does not identify a specific card model but broadly targets the technology class.

IV. Analysis of Infringement Allegations

The complaint references preliminary claim charts in exhibits (e.g., Ex. A-1, B-1, C-1) but these exhibits were not filed with the complaint Compl. ¶34 Compl. ¶44 Compl. ¶54 Therefore, the infringement theories are summarized below in prose.

No probative visual evidence provided in complaint.

'926 Patent Infringement Allegations

The complaint alleges that the accused contactless credit cards contain synchronous circuits (e.g., a microcontroller) that practice the invention of the '926 Patent Compl. ¶¶33-34 The implied infringement theory is that these cards include a reset generation circuit that detects whether the microcontroller is operating normally or abnormally (e.g., due to a power supply fluctuation or a processing error) and, in response, selectively generates either a synchronous reset to preserve data or an asynchronous reset for immediate initialization, as recited in claim 1.

'145 Patent Infringement Allegations

The complaint alleges that the accused credit cards infringe claim 10 of the '145 Patent Compl. ¶¶43-44 The infringement theory is that the cards contain a metal component, and the antenna used for contactless communication is formed by a "recess" in that metal component that takes the shape of a "ring segment." This aligns with the construction of some modern credit cards that incorporate metal layers, where the antenna might be etched or cut out from this layer.

Identified Points of Contention

• Evidentiary Challenge: A primary point of contention for all asserted patents will be evidentiary. The internal architecture, circuitry, and physical construction of the chips inside the accused credit cards are not public information. Plaintiff's allegations will likely require extensive discovery, including potentially destructive reverse engineering of the accused products, to find evidence supporting its infringement theories.
• Pleading Discrepancy for the '145 Patent: A significant issue arises from the complaint's description of the '145 Patent. The narrative in the complaint describes a technology for reducing jitter in multiplexer circuits using PLL/DLLs Compl. ¶¶15-17, whereas the actual '145 Patent attached as Exhibit B relates to forming transponder antennas in metal objects. This disconnect raises the question of whether the infringement allegations for the '145 Patent, as pleaded, satisfy the plausibility standard under federal pleading rules.
• Breadth of Allegations: The assertion of five technologically diverse patents against a single, broadly-defined product category suggests a portfolio-level assertion strategy. A potential point of contention will be whether a single device can plausibly infringe this wide range of distinct inventions covering specific solutions to different technical problems.

V. Key Claim Terms for Construction

U.S. Patent No. 7,449,926

• The Term: "operation detection circuit" (from claim 1)
• Context and Importance: This term is central to the invention, as its function-distinguishing between "normal" and "abnormal" operation-is what triggers the selective generation of a synchronous or asynchronous reset. The scope of this term will be critical to determining infringement.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim language is functional, defining the circuit by what it does ("detecting whether the synchronous circuit is operating normally or abnormally"). Plaintiff may argue this functional language should cover any circuit structure that performs the recited detection function.
  • Evidence for a Narrower Interpretation: The specification describes a specific embodiment where the detection circuit uses an up-counter that is periodically cleared by a signal from the CPU; an "abnormal" state occurs if the clear signal is not received in time '926 Patent, col. 4:11-46 A defendant may argue that the term should be limited to this disclosed mechanism or similar structures.

U.S. Patent No. 7,889,145

• The Term: "recess" (from claim 10)
• Context and Importance: The claim requires that the antenna be formed by a "recess" in a metal component. The definition of this term will determine whether patterns on the surface of a credit card's metallic layer fall within the claim's scope.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The patent states that the recess can be formed "at least partially as a breakthrough in the metal component" '145 Patent, col. 2:48-50 Plaintiff may argue that "recess" should be broadly construed to include any cutout, slot, or etched pattern where metal is absent, forming the antenna.
  • Evidence for a Narrower Interpretation: Figures like Fig. 7 and Fig. 8 show the recess as a three-dimensional cavity (23) formed by a cover (17) over a breakthrough '145 Patent, Fig. 7 A defendant may argue that "recess" requires a structure with physical depth, not merely a two-dimensional surface pattern.

VI. Other Allegations

Indirect Infringement

• The complaint asserts only induced infringement under 35 U.S.C. § 271(b) for all five patents Compl. ¶33 Compl. ¶43 Compl. ¶53 Compl. ¶63 Compl. ¶73 The allegations state that Defendant induces direct infringement by third parties (e.g., partners, customers, and end users) by providing the accused credit cards and supporting their use through instruction materials, training, and services Compl. ¶38 Compl. ¶48

Willful Infringement

• Willfulness is alleged based on Defendant's knowledge of the patents and the alleged infringement obtained "since the filing of this Complaint" Compl. ¶39 Compl. ¶49 Compl. ¶59 Compl. ¶69 Compl. ¶79 This is a standard allegation of post-suit willfulness, predicated on the notice provided by the lawsuit itself.

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

This case presents several key questions that will likely define its trajectory:

• A core issue will be one of evidentiary proof: Can the plaintiff, through discovery and technical analysis, demonstrate that the non-public, internal workings of the accused contactless credit cards actually implement the specific and diverse technologies claimed across the five asserted patents?
• A key threshold question will be one of pleading sufficiency: Does the notable discrepancy between the complaint's narrative description of the '145 patent (related to signal jitter) and the actual patent's subject matter (antennas in metal) constitute a failure to provide plausible grounds for its infringement claim, potentially inviting a motion to dismiss?
• A central legal question will be one of claim construction: How will the court define foundational terms such as "operation detection circuit" ('926 patent) and "recess" ('145 patent)? The construction of these terms will be critical in determining whether the technology embodied in a modern smart card falls within the scope of patents filed over a decade prior.