Everlight Electronics Co Ltd v. Nichia Corp

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Everlight Electronics Co., Ltd. (Taiwan)
  • Defendant: Nichia Corporation (Japan); Nichia America Corporation (Michigan)
  • Plaintiff’s Counsel: Bush Seyferth PLLC, with Venable LLP serving as co-counsel
• Case Identification: 2:26-cv-12640, E.D. Mich., 07/30/2026
• Venue Allegations: Venue is alleged to be proper for Nichia America Corporation under 28 U.S.C. § 1391(c) and § 1400(b) because it is incorporated in Michigan and maintains its principal place of business within the Eastern District of Michigan. Venue is alleged to be proper for Nichia Corporation, a foreign entity, as it is subject to personal jurisdiction within the district, with the complaint invoking Federal Rule of Civil Procedure 4(k)(2) as an alternative basis for personal jurisdiction over that foreign defendant. Subject-matter jurisdiction is alleged under 28 U.S.C. §§ 1331 and 1338(a).
• Core Dispute: Plaintiff alleges that Defendants manufactured and imported light-emitting diode (LED) products using a process that infringes a now-expired U.S. patent, and seeks damages for infringement that occurred during the patent's term.
• Technical Context: The lawsuit concerns the manufacturing methods for semiconductor light-emitting elements, which are fundamental components in high-power LEDs used in a wide range of electronics, including smartphone camera flashes.
• Key Procedural History: The complaint asserts a single patent, U.S. Patent No. 7,554,126, which has expired. The action seeks monetary damages for past infringement that occurred during the patent’s valid term, and the prayer for relief additionally seeks an accounting, pre-judgment and post-judgment interest, a finding that this is an exceptional case under 35 U.S.C. § 285 with attorneys’ fees, and enhanced damages under 35 U.S.C. § 284; the complaint also demands a jury trial and pleads that Everlight is the sole owner by assignment of all right, title, and interest in the ’126 Patent.

Case Timeline

Date	Event
2004-09-27	Priority Date, ’126 Patent
2005-09-22	PCT Filing Date, ’126 Patent
2009-06-30	Issue Date, U.S. Patent No. 7,554,126
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"

• Patent Identification: U.S. Patent No. 7,554,126 (“the ’126 Patent”), "Semiconductor Light-Emitting Element, Manufacturing Method and Mounting Method of the Same and Light-Emitting Device," issued on June 30, 2009 Compl. ¶15

The Invention Explained

• Problem Addressed: The patent's background describes difficulties in mounting large, high-power LED chips onto circuit boards '126 Patent, col. 1:56-61 Conventional methods using solder required large joining areas, but the LED chip's n-electrode was often too small, necessitating high-precision (and thus less efficient) mounting techniques like flip-chip junctions with bumps '126 Patent, col. 2:6-41
• The Patented Solution: The invention proposes a new LED element structure and manufacturing method to create larger electrode contact pads suitable for low-cost solder mounting '126 Patent, col. 2:42-50 The method involves forming a first set of small electrodes on the semiconductor layers, covering them with an insulating layer, and then forming a second set of electrodes on top of the insulating layer—the second n-electrode being larger than the joined face beneath it, and the second p-electrode being smaller than the p-n junction face—which connect to the first electrodes through openings '126 Patent, Fig. 1 '126 Patent, abstract This allows the final contact pads to be made larger without shrinking the light-emitting area of the chip '126 Patent, col. 5:49-56
• Technical Importance: This design aimed to improve the manufacturability of large-scale, high-power LED chips, providing larger light-emitting elements with higher junction yields while enabling high production efficiency with lower precision requirements Compl. ¶16

Key Claims at a Glance

• The complaint asserts infringement of "one or more method claims ... including, but not limited to, claim 9," thereby reserving the right to assert additional method claims of the ’126 Patent beyond independent claim 9 Compl. ¶19
• The essential steps of claim 9 include Compl. ¶17:
  • preparing a bare light-emitting element with n-type and p-type semiconductor layers, a first n-electrode, and a first p-electrode;
  • 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 the joined face between the n-type semiconductor and the first n-electrode, and electrically connected to the first n-electrode; and
  • forming a second p-electrode on the first p-electrode, with an area smaller than the joined face between the n-type and p-type semiconductor layers, and electrically connected to the first p-electrode.

III. The Accused Instrumentality

Product Identification

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

Functionality and Market Context

The complaint alleges that the flash LED module within the Apple iPhone 13 was manufactured by a process that infringes the ’126 Patent Compl. ¶19 The complaint includes a detailed teardown analysis of the iPhone 13's flash LED module, providing photographs and scanning electron microscope (SEM) images to show its internal structure Compl. Ex. 2, pp. 2-13 The complaint's allegations center on the physical construction of the LED chip, which is presented as evidence of the manufacturing process used Compl. ¶20

IV. Analysis of Infringement Allegations

The complaint alleges that the process used to manufacture the accused flash LED satisfies all limitations of at least claim 9 of the ’126 Patent Compl. ¶20 The infringement theory relies on a structural analysis of the final product to infer the manufacturing method used. The complaint's prayer for relief additionally pleads that Defendants infringed "either literally and/or under the doctrine of equivalents" one or more method claims of the ’126 Patent Compl. p. 8 A teardown photograph shows the disassembly of an iPhone 13 to access the flash module Compl. Ex. 2, p. 2 Further images from the teardown show the isolated flash module and the subsequent desoldering and analysis of the LED chip itself Compl. Ex. 2, pp. 3-4

’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 formed on a light-transmitting element substrate...	The complaint alleges that Defendants prepare a bare LED element with an n-type semiconductor layer on a substrate. A cross-section SEM image purports to show these layers (Compl. Ex. 2, p. 6).	¶20	col. 9:47-51
a p-type semiconductor layer formed on an area on the n-type semiconductor layer from which an area for the n-electrode on the n-type semiconductor layer is excluded...	It is alleged that the accused LED includes a p-type semiconductor layer formed on the n-type layer, with a region excluded for the n-electrode.	¶20	col. 9:51-57
a first n-electrode that is a thin film formed on the area for the n-electrode of the n-type semiconductor layer; and a first p-electrode that is a thin film formed on the p-type semiconductor layer;	The complaint presents SEM images purporting to identify the first n-electrode and first p-electrode as distinct thin film layers within the accused LED structure (Compl. Ex. 2, p. 7; Compl. Ex. 2, p. 8).	¶20	col. 9:57-62
forming a first insulating layer so as to insulate the first n-electrode and the first p-electrode from each other;	The complaint alleges a first insulating layer is formed to insulate the initial electrodes. An SEM image purports to show this insulating layer (Compl. Ex. 2, p. 9).	¶20	col. 9:63-65
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...	It is alleged that a second n-electrode is formed on top of the first n-electrode and insulating layer, with an annotated image indicating its area is larger than the joined face of the first n-electrode (Compl. Ex. 2, p. 11).	¶20	col. 10:11-15
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 complaint alleges a second p-electrode is formed with an area smaller than the p-n junction face, with annotated images showing the relative sizes (Compl. Ex. 2, p. 12).	¶20	col. 10:15-19

Identified Points of Contention

• Process vs. Product: A potential point of contention is that claim 9 is a method claim, but the complaint's evidence is based on a structural analysis of the finished product. While structure can be evidence of the manufacturing process, Defendants may argue that the observed structure could have been created by a different, non-infringing method.
• Scope Questions: The case may turn on the interpretation of the relative size limitations. A key question will be whether the accused device's "second n-electrode" is demonstrably "larger than a joined face" and its "second p-electrode" is "smaller than a joined face," as those terms are construed by the court. The complaint's visual evidence suggests these limitations are met, but this will likely be a subject of competing expert measurement and analysis.

V. Key Claim Terms for Construction

• The Term: "an area larger than a joined face between the n-type semiconductor and the first n-electrode"

• Context and Importance: This term is critical because it defines the core geometric innovation for the n-electrode: creating a larger external contact pad than the underlying electrode. Infringement of this limitation will likely depend on how "joined face" is defined and how the respective areas are measured in the accused device.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The specification states a goal is to make the second n-electrode "allowed to have an area larger than the joined face between the n-type semiconductor layer 12 and the first n-electrode 14" '126 Patent, col. 8:5-9 This general statement may support a construction where any measurable increase in area satisfies the limitation.
  • Evidence for a Narrower Interpretation: The abstract states that the second n-electrode and second p-electrode are of "virtually the same size" '126 Patent, abstract That language, however, compares the two second electrodes to each other rather than comparing the second n-electrode to the joined face between the n-type semiconductor and the first n-electrode that claim 9's "larger than" limitation actually addresses ’126 Patent, col. 8:5-9, so its bearing on construing the "larger than" requirement is itself contestable.

• The Term: "an area smaller than a joined face between the n-type semiconductor layer and the p-type semiconductor layer"

• Context and Importance: This corresponding limitation for the p-electrode is equally important to defining the claimed geometry. The "joined face" in this context refers to the p-n junction, which the specification describes as corresponding to the primary light-emitting area of the chip '126 Patent, col. 8:1-12

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The patent states that the "lower face 18a of the second p-electrode 18 is consequently formed into an area smaller than the joined face" '126 Patent, col. 8:9-12 This suggests a direct geometric consequence of the design, which may support a straightforward dimensional comparison.
  • Evidence for a Narrower Interpretation: A defendant could argue that the relative sizing is tied to the patent's goal of improving current distribution and luminance uniformity '126 Patent, col. 9:1-4 Claim 9, however, recites only structural and dimensional limitations and contains no current-flow-mechanism requirement, so satisfying the dimensional limitations would establish literal infringement of this element regardless of whether the accused device achieves uniform current flow through a different mechanism; the uniformity benefit is a specification advantage rather than a claim limitation.

VI. Other Allegations

• Direct Infringement (§ 271(g)): The complaint alleges direct infringement under 35 U.S.C. § 271, specifically including § 271(g), which covers the importation, sale, or use within the United States of a product made by a process patented in the United States; § 271(g) is a form of direct infringement, and the complaint pleads no inducement (§ 271(b)) or contributory (§ 271(c)) indirect-infringement theory Compl. ¶19 The factual basis is the allegation that Defendants made, imported, offered for sale, and sold the accused flash LED products incorporated into the Apple iPhone 13, which were made by the patented method Compl. ¶¶3-5 Compl. ¶19
• Willful Infringement: The complaint includes a boilerplate reservation of rights to seek enhanced damages for willful infringement, based on "facts demonstrat[ed through] discovery" or post-filing conduct Compl. ¶22 It does not allege pre-suit knowledge of the patent.

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

• A core issue will be one of process inference: Can the plaintiff prove, based primarily on a structural analysis of the finished LED chip, that the defendant necessarily used the specific sequence of manufacturing steps recited in method claim 9? The defense will likely explore whether alternative, non-infringing manufacturing processes could result in a similar final structure.
• A second central issue will be one of definitional measurement: The infringement analysis will depend heavily on the court's construction of the terms "joined face," "area larger than," and "area smaller than." The outcome will likely turn on a battle of experts presenting competing measurements and interpretations of the accused device's microscopic geometry.