DCT
0:26-cv-03972
Electronic Edison Transmission Tech LLC v. Winnebago Industries Inc
Key Events
Complaint
Table of Contents
complaint Intelligence
I. Executive Summary and Procedural Information
Parties & Counsel:
- Plaintiff: Electronic Edison Transmission Technologies, LLC (Wyoming)
- Defendant: Winnebago Industries, Inc. (Minnesota)
- Plaintiff’s Counsel: Law Office of Eric J. Strobel
Case Identification: Electronic Edison Transmission Technologies, LLC v. Winnebago Industries, Inc., 0:26-cv-03972, D. Minn., 09/11/2026
Venue Allegations: Venue is alleged to be proper in the District of Minnesota because Defendant maintains a place of business in the district and has allegedly committed acts of infringement there.
Core Dispute: Plaintiff alleges that Defendant’s recreational vehicles equipped with wireless charging systems infringe a patent related to methods of transferring power between mobile devices.
Technical Context: The lawsuit concerns wireless power transfer technology, specifically the ability to charge a portable electronic device (like a smartphone) from another device, which is an increasingly common convenience feature in the automotive and consumer electronics markets.
Key Procedural History: The complaint does not mention any prior litigation, inter partes review proceedings, or licensing history. Plaintiff notes that because it is asserting only a method claim, the patent marking requirements of 35 U.S.C. § 287(a) are not applicable.
Case Timeline
| Date | Event |
|---|---|
| 2011-09-03 | Priority Date for U.S. Patent No. 9,448,603 |
| 2016-09-20 | Issue Date for U.S. Patent No. 9,448,603 |
| 2026-09-11 | Complaint Filing Date |
II. Technology and Patent(s)-in-Suit Analysis
U.S. Patent No. 9,448,603 - Transferring Power to a Mobile Device
- Patent Identification: U.S. Patent No. 9,448,603, Transferring Power to a Mobile Device, issued September 20, 2016 (the ’603 Patent).
The Invention Explained
- Problem Addressed: The patent addresses a common situation where a consumer's mobile device has a low battery, but no conventional power source (e.g., a wall outlet) is available, while another mobile device with a substantial battery is on hand ’603 Patent, col. 1:23-31
- The Patented Solution: The invention provides a system and method for transferring power wirelessly from a "donor mobile device" (e.g., a laptop) to a "receptor mobile device" (e.g., a smartphone) ’603 Patent, col. 1:35-40 The method involves using software on both devices to configure their respective wireless power transfer mechanisms, initiate the transfer, and manage the process, for example, by setting power thresholds ’603 Patent, col. 1:50-63 ’603 Patent, abstract The patent describes various wireless transfer technologies, including inductive and capacitive coupling ’603 Patent, col. 3:6-14
- Technical Importance: This technology enables on-the-go power sharing between personal electronic devices, offering a solution to limited battery life without requiring a fixed power source.
Key Claims at a Glance
- The complaint asserts independent method claim 8 ’603 Patent, col. 14:8-24 Compl. ¶14
- The essential elements of independent claim 8 are:
- A method for transferring power to a receptor mobile device from a donor mobile device having a battery, comprising:
- configuring a wireless power transfer mechanism on the receptor mobile device using a wireless receive application;
- determining a receptor power threshold using a wireless receive application;
- receiving power from the donor mobile device and converting received power into electric current using the wireless power transfer mechanism;
- wherein the wireless power transfer mechanism includes a power adapter having coil, circuit elements to transfer power and a capacitor to store electric charge that increases battery life when the capacitor is discharged.
III. The Accused Instrumentality
Product Identification
- The accused instrumentalities are Winnebago vehicles, such as the Winnebago Voyage and Micro Minnie, that are equipped with wireless charging functionality Compl. ¶14
Functionality and Market Context
- The complaint alleges that these vehicles include an integrated, Qi-compatible wireless charging pad (labeled "Connex") built into the vehicle's interior Compl. ¶15
- This pad is powered by the vehicle's battery and wirelessly transmits power via electromagnetic induction to a compatible device, such as a smartphone, when it is placed on the pad Compl. ¶15
- The complaint characterizes the Winnebago vehicle as the "donor mobile device" and the user's smartphone as the "receptor mobile device" Compl. ¶15 An image in the complaint shows the "Connex" wireless charging pad installed in a surface within the vehicle Compl. p. 5
IV. Analysis of Infringement Allegations
- Claim Chart Summary: The complaint alleges that the operation of the wireless charging systems in Defendant's vehicles infringes method claim 8 of the ’603 Patent.
’603 Patent Infringement Allegations
| Claim Element (from Independent Claim 8) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| configuring a wireless power transfer mechanism on the receptor mobile device using a wireless receive application; | When a Qi-compatible smartphone is placed on the charging pad, the smartphone's firmware allegedly executes a "wireless receive application or corresponding software functionality" that configures the communication process with the pad. | ¶16 | col. 1:55-57 |
| determining a receptor power threshold using a wireless receive application; | Upon placing the smartphone on the pad, the accused system allegedly determines the smartphone's power requirements and corresponding "receptor power threshold" through communications compliant with the Qi wireless charging standard. | ¶17 | col. 2:2-4 |
| receiving power from the donor mobile device and converting received power into electric current using the wireless power transfer mechanism; | The Qi-compatible system in the smartphone (the receptor) receives power via magnetic induction and its internal power converter transforms it into a direct electrical current to charge the battery. | ¶18 | col. 1:59-63 |
| wherein the wireless power transfer mechanism includes a power adapter having coil, circuit elements to transfer power and a capacitor to store electric charge that increases battery life when the capacitor is discharged. | The complaint alleges the overall Qi system functions as the claimed "power adapter." It maps the "coil" and "circuit elements" to the transmitter/receiver coils and circuitry, and the "capacitor" to a smoothing capacitor in the receiver that allegedly stores and discharges charge to increase battery life. | ¶19 | col. 14:19-24 |
Identified Points of Contention
- Scope Questions: A primary issue may be whether a recreational vehicle, such as the Winnebago Micro Minnie, can be considered a "donor mobile device" within the meaning of the ’603 Patent. The patent's specification primarily describes interactions between portable consumer electronics like laptops and phones '603 Patent, col. 1:15-19, raising the question of whether a vehicle falls within the claimed scope.
- Scope Questions: The construction of the term "power adapter" may be disputed. The complaint maps this limitation to the entire integrated Qi power transfer system Compl. ¶19, while figures in the patent depict a "power adapter" as a discrete, portable accessory '603 Patent, Figs. 4A-4C This suggests a potential mismatch between the claim language and the accused system's architecture.
- Technical Questions: A key technical question will be whether the "smoothing capacitor" found in a standard Qi power receiver Compl. ¶19 performs the specific function of a capacitor that "store[s] electric charge that increases battery life when the capacitor is discharged," as required by the claim. The parties may dispute whether a component designed to smooth voltage ripple functionally meets this specific "battery life" increasing limitation. An annotated diagram from the Qi specification is used to illustrate the components of the receiver circuitry, including the capacitor Compl. p. 19
V. Key Claim Terms for Construction
The Term: "mobile device"
- Context and Importance: The infringement theory hinges on categorizing a Winnebago recreational vehicle as a "donor mobile device." The definition of this term is therefore fundamental to the case.
- Intrinsic Evidence for a Broader Interpretation: The patent does not provide an explicit definition of "mobile device." Plaintiff may argue that the ordinary meaning of "mobile" applies to a vehicle, which is inherently mobile.
- Intrinsic Evidence for a Narrower Interpretation: The specification consistently provides examples of "portable or mobile device[s]" such as "laptop, notebook, and tablet computers as well as mobile phones and portable gaming systems" '603 Patent, col. 1:15-19 This context suggests the invention is directed to personal, portable electronics, which could support a narrower construction that excludes vehicles.
The Term: "power adapter"
- Context and Importance: Claim 8 requires the wireless power transfer mechanism to include a "power adapter." The viability of the infringement allegation depends on whether the integrated charging system in a Winnebago vehicle can be construed as a "power adapter."
- Intrinsic Evidence for a Broader Interpretation: The term is not explicitly defined, which may allow for an argument that it generically refers to any collection of components that adapts and provides power.
- Intrinsic Evidence for a Narrower Interpretation: The patent's specification and figures explicitly depict the "power adapter" as a distinct, standalone accessory used to facilitate power transfer between two other devices '603 Patent, col. 8:20-28 '603 Patent, Figs. 4A-4C This strong contextual evidence may support a narrower construction limited to such an intermediary device.
VI. Other Allegations
- Indirect Infringement: The complaint alleges induced infringement, stating that Defendant provides marketing materials, instructional guides, and support that encourage and instruct customers to use the accused wireless charging feature in an infringing manner Compl. ¶21 The complaint also alleges contributory infringement, asserting the accused functionality is a material part of the invention and not a staple article of commerce suitable for substantial non-infringing use Compl. ¶22
- Willful Infringement: The complaint alleges willful infringement based on Defendant's knowledge of the ’603 Patent and the alleged infringement from "at least as of the date of the service of the Original Complaint" Compl. ¶21
VII. Analyst’s Conclusion: Key Questions for the Case
The resolution of this case will likely depend on the court's determination of several key issues:
- A core issue will be one of definitional scope: can the term "mobile device," which the patent illustrates with examples of personal electronics like laptops and phones, be construed to encompass a recreational vehicle as alleged by the Plaintiff?
- A second central question relates to claim construction: does the term "power adapter," which the patent depicts as a discrete, portable accessory, read on the integrated wireless charging system built into the Defendant's vehicles?
- Finally, a key evidentiary question will be one of functional operation: does the accused product’s standard smoothing capacitor perform the specific, recited function of a capacitor that "increases battery life when...discharged," or is there a fundamental mismatch in its technical purpose and operation compared to what the claim requires?
Analysis metadata