Everlight Electronics Co Ltd v. Nichia Corp

I. Executive Summary and Procedural Information

• Case Name: Everlight Electronics Co., Ltd. v. Nichia Corporation
• Parties & Counsel:
  • Plaintiff: Everlight Electronics Co., Ltd. (Taiwan)
  • Defendant: Nichia Corporation (Japan) and Nichia America Corporation (Michigan)
  • Plaintiff's Counsel: Bush Seyferth PLLC; Venable LLP
• Case Identification: 2:26-cv-12640, E.D. Mich., 07/30/2026
• Venue Allegations: Venue is alleged to be proper for Nichia America Corporation as it is incorporated in Michigan and maintains its principal place of business within the district. For Nichia Corporation, a foreign entity, venue is asserted on the basis that it is subject to personal jurisdiction and has transacted business in the district.
• Core Dispute: Plaintiff alleges that Defendant's LED products, including those incorporated into the Apple iPhone 13, were manufactured using a process that infringes a now-expired patent related to the structure and manufacturing of semiconductor light-emitting elements.
• Technical Context: The technology concerns methods for manufacturing and mounting large-scale Light Emitting Diodes (LEDs) onto circuit boards, a critical process for producing high-power LEDs used in consumer electronics, automotive lighting, and general illumination.
• Key Procedural History: The complaint was filed after the patent-in-suit, U.S. Patent No. 7,554,126, expired. The action seeks only monetary damages for acts of infringement that occurred during the patent's enforceable term.

Case Timeline

Date	Event
2004-09-27	'126 Patent Priority Date
2009-06-30	'126 Patent Issue Date
2021-09-24	Apple iPhone 13 Launch Date
2025-09-22	'126 Patent Expiration Date
2026-07-30	Complaint Filing Date

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

U.S. Patent No. 7,554,126 - "Semiconductor Light-Emitting Element, Manufacturing Method and Mounting Method of the Same and Light-Emitting Device"

• Issued: June 30, 2009 Compl. ¶15

The Invention Explained

• Problem Addressed: The patent's background section describes challenges in mounting increasingly large LED chips onto circuit boards '126 Patent, col. 2:1-4 Conventional methods required small, precise electrical contacts ("bumps") that were difficult to align, leading to lower manufacturing yields and connection failures '126 Patent, col. 2:5-12 Furthermore, the small contact area for the n-electrode made it difficult to use common, low-cost conductive bonding materials like solder, which require a larger surface for a reliable connection, thereby increasing manufacturing costs and complexity '126 Patent, col. 2:26-41
• The Patented Solution: The invention proposes a new LED element structure featuring two tiers of electrodes. A first, smaller set of n- and p-electrodes are formed directly on the semiconductor layers. An insulating layer is then applied over these first electrodes. Finally, a second, larger set of n- and p-electrodes are formed on top of the insulating layer, connecting to the first electrodes through openings '126 Patent, abstract This structure, illustrated in Figure 1 of the patent, creates large external contact pads that facilitate easier and more reliable mounting using standard, inexpensive soldering techniques '126 Patent, col. 9:50-59
• Technical Importance: This design aimed to improve the manufacturability and lower the cost of high-power LEDs, enabling their widespread adoption in demanding applications like automotive headlights and large-scale backlights '126 Patent, col. 2:1-4

Key Claims at a Glance

• The complaint asserts infringement of "one or more method claims," providing Claim 9 as an example Compl. ¶17 Compl. ¶19
• Independent method Claim 9 consists of the following essential steps:
  • Preparing a bare light-emitting element with n-type and p-type semiconductor layers, and first n- and p-electrodes on their respective layers.
  • Forming a first insulating layer to insulate the first n-electrode and first p-electrode from each other.
  • Forming a second n-electrode on the first n-electrode and insulating layer, with an area "larger than a joined face between the n-type semiconductor and the first n-electrode."
  • Forming a second p-electrode on the first p-electrode, with an area "smaller than a joined face between the n-type semiconductor layer and the p-type semiconductor layer."

III. The Accused Instrumentality

Product Identification

The complaint identifies the accused instrumentality as certain light-emitting products, "including but not limited to the flash LED incorporated into the Apple iPhone 13 (Model A2482 128 GB) smartphone" (collectively, the "Accused Products") Compl. ¶18

Functionality and Market Context

• The complaint alleges that the Accused Products are LED components manufactured by Defendants using a process that infringes the '126 Patent Compl. ¶¶19-20 The infringement allegation is directed at the method of making the LED component itself, not the operation of the final smartphone product.
• The complaint asserts that Defendants made, used, sold, offered for sale, or imported these infringing products in the United States during the term of the '126 Patent Compl. ¶18 By identifying a component within a high-volume consumer device, the complaint suggests a significant scale of alleged infringement.

IV. Analysis of Infringement Allegations

The complaint alleges that the process used to make the Accused Products meets all the limitations of at least Claim 9 of the '126 Patent and references an exemplary claim chart attached as Exhibit 2, which was not provided with the complaint Compl. ¶20 The following table summarizes the infringement theory for method Claim 9 based on the allegations in the complaint.

No probative visual evidence provided in complaint.

'126 Patent Infringement Allegations

Claim Element (from Independent Claim 9)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
preparing a bare light-emitting element comprising an n-type semiconductor layer...a p-type semiconductor layer...a first n-electrode...and a first p-electrode...	The process used to manufacture the Accused Products allegedly includes preparing a bare light-emitting element with the claimed layered structure and first electrodes.	¶20	col. 9:42-66
forming a first insulating layer so as to insulate the first n-electrode and the first p-electrode from each other;	The manufacturing process for the Accused Products allegedly includes forming an insulating layer over the first electrodes.	¶20	col. 10:1-5
forming a second n-electrode on the first n-electrode and the first insulating layer as a thin film having an area larger than a joined face between the n-type semiconductor and the first n-electrode...	The manufacturing process for the Accused Products allegedly includes forming a second n-electrode with an area larger than the specified joined face.	¶20	col. 10:12-15
forming a second p-electrode on the first p-electrode as a thin film having an area smaller than a joined face between the n-type semiconductor layer and the p-type semiconductor layer...	The manufacturing process for the Accused Products allegedly includes forming a second p-electrode with an area smaller than the specified joined face.	¶20	col. 10:15-19

• Identified Points of Contention:
  • Evidentiary Question: A central issue will be determining the specific manufacturing process Defendants used for the accused LEDs. The complaint is based on "information and belief" Compl. ¶18 The litigation will likely focus on discovery to obtain evidence of Defendants' actual manufacturing steps to see if they correspond to the two-tiered electrode structure required by Claim 9.
  • Technical Question: The claim includes specific relative size requirements: the second n-electrode must have an area "larger than" the first n-electrode's joined face, while the second p-electrode must have an area "smaller than" the pn junction face. A key technical question will be whether the accused manufacturing process results in electrodes that meet these precise dimensional limitations.

V. Key Claim Terms for Construction

• The Term: "joined face"
• Context and Importance: This term appears twice in Claim 9 with different contexts: "a joined face between the n-type semiconductor and the first n-electrode" and "a joined face between the n-type semiconductor layer and the p-type semiconductor layer." The construction of "joined face" is critical because it defines the baseline areas against which the second electrodes are measured to determine infringement of the "larger than" and "smaller than" limitations. Practitioners may focus on this term because its definition will directly control the infringement analysis of a key claim limitation.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The plaintiff may argue that "joined face" should be given its plain and ordinary meaning, referring to the entire physical interface area between the two specified components. For the p-electrode, this would refer to the entire pn junction, a relatively large area.
  • Evidence for a Narrower Interpretation: The defendant may argue that the term should be interpreted more narrowly in light of the patent's figures and description. For example, they might contend that "joined face" refers only to an electrically active or intended contact region, rather than the entire physical interface, potentially altering the outcome of the size comparison. The patent does not appear to provide an explicit definition, leaving its precise meaning open to interpretation by the court.

VI. Other Allegations

• Indirect Infringement: The complaint's primary infringement allegation is under 35 U.S.C. § 271(g), which holds parties liable for importing, selling, or using products in the U.S. that were made by a process patented in the U.S. Compl. ¶19 The complaint does not plead specific facts to support claims of induced or contributory infringement.
• Willful Infringement: The complaint does not allege pre-suit knowledge of the '126 Patent. It prospectively "reserves the right to seek a finding of willfulness and enhanced damages" if discovery reveals facts supporting such a claim, or if "Defendants' post-filing conduct otherwise renders this an egregious case" Compl. ¶22

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

1. An Evidentiary Question of Process: The case will fundamentally depend on whether Plaintiff can prove, through discovery, that the specific manufacturing process used by Defendants for the accused flash LEDs includes the sequence of steps recited in Claim 9. The dispute will move from the complaint's general allegations to a detailed, factual comparison of the accused process against the patented method.
2. A Definitional Question of Scope: The infringement analysis will likely turn on the construction of the term "joined face." How the court defines this term will establish the standard for the subsequent factual question: does the accused process create second electrodes with the specific "larger than" and "smaller than" relative surface areas required by Claim 9?
3. An Economic Question of Damages: Because the '126 Patent has expired, the case is exclusively for past damages. A central issue will be determining a "reasonable royalty" for the patented manufacturing process Compl. ¶23 This will require an economic analysis of the value, if any, the patented method contributed to a high-volume component within a globally successful product.