Epistar Corp. v. Lowes Cos.

326 F. Supp. 3d 952
CourtDistrict Court, C.D. California
DecidedJuly 10, 2018
DocketCase No. LA CV17-03219 JAK (KSx)
StatusPublished

This text of 326 F. Supp. 3d 952 (Epistar Corp. v. Lowes Cos.) is published on Counsel Stack Legal Research, covering District Court, C.D. California primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Epistar Corp. v. Lowes Cos., 326 F. Supp. 3d 952 (C.D. Cal. 2018).

Opinion

JOHN A. KRONSTADT, UNITED STATES DISTRICT JUDGE

I. Introduction

Epistar Corporation ("Plaintiff") brought this patent infringement action. It alleges that Defendant Lowe's Home Centers, LLC ("Defendant") has infringed U.S. Patent Nos. 6,346,771 (the '771 Patent), 7,560,738 (the '738 Patent), 8,492,780 (the '780 Patent), 8,587,020 (the '020 Patent), and 8,791,467 (the '467 Patent)1 . Complaint, Dkt. 1.2

The parties filed their Joint Claim Construction and Prehearing Statement on December 18, 2017. Dkt. 70.3 The parties filed their opening claim construction briefs on December 21, 2017, and their responsive briefs on January 31, 2018. Dkts. 71, 72, 97, 99. A Markman hearing was held on March 8, 2018 and the matter was taken under submission. Dkt. 107. On March 15, 2018, the parties filed a Joint Report regarding matters raised during the Markman Hearing. Dkt. 108. The Joint Report states that the parties were *956unable to reach agreement on certain disputes that were discussed during the Markman proceedings. Id. Therefore, all disputed claim terms are addressed in this Order.

II. Factual Background

A. The '771 Patent

The '771 Patent is entitled "High Power LED Lamp." The '771 Patent states that it is directed to a "single-chip LED lamp that is up to 250 times more [ ] powerful than a conventional single-chip LED lamp." See '771 Patent at 1:5-9. In one aspect, the '771 Patent discloses an LED chip with semiconductor layers and an active region that generates LED light. Id. at 2:11-17, 2:31-39. The LED chip can also use cavities, reflectors, conductors and/or metal tracks to guide light extraction and enhance the efficiency of the lamp. Id. at 2:16-25, 3:62-4:5-53.

The Complaint alleges that Defendant infringes at least Claim 38 of the '771 Patent. Five of the disputed terms appear in the '771 Patent. Collectively, they appear in its Claims 32, 33, 36, and 38. Claim 38 recites:

38. An LED lamp for generating incoherent visible light, comprising:
a non-semiconductor member having a top face;
a semiconductor structure formed over said top face, said semiconductor structure comprising lower and upper inorganic semiconductor layers of opposite conductivities and an active region generating LED light;
at least one metal conductor over and in electrical contact with part of said lower semiconductor layer;
a top conductor layer formed on and electrically connected to said upper semiconductor layer; and
wherein said semiconductor structure has outer side faces and has several light-extraction surfaces arranged for harvesting light from the semiconductor structure, said light-extraction surfaces being distant from said outer side faces and inclined to said semiconductor layers, LED light propagating in the semiconductor structure being diverted at said light-extraction faces.

'771 Patent at 12:66-13:16. Two representative figures are reproduced below:

*957'771 Patent, Figs. 2 and 3; see also id. at 2:48-51 (describing Figure 2 as a "plan view of the LED chip in FIG. 1," i.e. , an "LED light source according to an embodiment of the invention" and describing Figure 3 as a "sectional view of a portion of chip 2.").

B. The '020 Patent

The '020 Patent, which is titled "LED Lamps," is a continuation-in-part of the '771 Patent. There are significant overlaps in the specifications of the two patents, including in their diagrams. The '020 Patent discloses single-chip LED lamps and lamps "based on just two LEDs." See, e.g. , '020 Patent at 2:30-31, 2:55-57. The LED lamps may include semiconductor layers with electrically connected conductors and/or tracks to enhance the efficiency of the lamp. Id. at 3:7-10, 6:9-12.

Plaintiff alleges that Defendant infringes at least Claim 1 of the '020 Patent. Three of the disputed terms appear in the '020 Patent, in its Claims 1, 9, and 16. Claim 9 recites:

9. An LED lamp comprising:
a semiconductor structure comprising a lower semiconductor layer having a lower face, an active region, an upper semiconductor layer having an upper face through which at least some light from the active region can escape from the semiconductor structure, a first edge, and a second edge opposite to the first edge;
a first conductor and a second conductor, formed on the upper face;
a track formed on a lower bottom surface lower than the upper face, and between the first conductor and the second conductor;
a first terminal electrically connected to the track; and
a second terminal distant from the first terminal and having a width greater than the first conductor.

'020 Patent at 22:8-23.

C. The '738 Patent

The '738 Patent is titled "Light-Emitting Diode Array Having an Adhesive Layer." The '738 Patent discloses an LED array having at least a substrate, an adhesive layer on the substrate and a plurality of electrically connected epitaxial light-emitting stack layers on the adhesive layer. See id. at Abstract.

The Complaint alleges that Defendant infringes at least Claim 1 of the '738 Patent. Three of the disputed terms appear in the '738 Patent in its Claims 1-3, 8, 13, and 15-17. Claim 1 recites:

*9581. A light-emitting diode array comprising: a substrate; an adhesive layer formed on the substrate; and a plurality of electrically connected epitaxial light-emitting stack layers disposed on the adhesive layer, each of the epitaxial light-emitting stack layers comprising a P-contact and an N-contact, wherein the P-contact and the N-contact are disposed on the same side of the epitaxial light-emitting stack layer.

'738 Patent at 4:31-37. A representative figure is reproduced below:

'738 Patent, Fig. 1; see also id. at 2:42-44 (describing Figure 1 as "a cross sectional schematic diagram of a light-emitting diode array having an adhesive layer of the prefferred embodiment according to the present invention.")

D. The '780 Patent

The '780 Patent is titled "Light-Emitting Device and Manufacturing Method Thereof." In one aspect, the '780 Patent describes a light emitting device that has a substrate with a particularized sidewall. Id. at 2:4-7. The sidewall comprises a discontinuous structure made by a substantially flat first area and a substantially textured second area. Id. at 2:6-9. This discontinuous structure may enhance the light extraction efficiency of the device. Id. at 2:9-11.

Plaintiff alleges that Defendant infringes at least Claim 1 of the '780 Patent. Two of the disputed terms appear in the '780 Patent, specifically in its Claims 1 and 2. Claims 1 and 2 recite:

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Bluebook (online)
326 F. Supp. 3d 952, Counsel Stack Legal Research, https://law.counselstack.com/opinion/epistar-corp-v-lowes-cos-cacd-2018.