Fox Group, Inc. v. Cree, Inc.

819 F. Supp. 2d 524, 2011 U.S. Dist. LEXIS 87231, 2011 WL 3468352
District Court, E.D. Virginia·Decided August 8, 2011·No. Action 2:10cv314·Published·Cited by 3 cases

Opinion

OPINION AND FINAL ORDER

REBECCA BEACH SMITH, District Judge.

This matter comes before the court on Cree, Inc.’s (“Cree”) Motion for Summary Judgment of non-infringement of U.S. Patent Number 6,562,130 (“the '130 patent”) and U.S. Patent Number 6, 534,026 (“the '026 patent”) and invalidity of the '130 patent (“Cree’s Summary Judgment Motion”). For the reasons set forth below, Cree’s Summary Judgment Motion is GRANTED in part, and DENIED, in part, as MOOT.

I. Background 1

This case involves Cree’s alleged infringement of the '130 and '026 patents, which are owned by The Fox Group, Inc. (“Fox”) and relate to growth of low defect silicon carbide (SiC) through “seeded sublimation.” 2 SiC crystal is a semiconduc *527 tor material grown via man-made methods and used in high-temperature and high-power electronics such as light sources, power diodes, and photodiodes. To be viable as a semi-conductor, SiC material must contain a relatively low level of defects.

Fox filed suit against Cree on June 29, 2010, seeking injunctive relief against alleged patent infringement, as well as compensatory damages. 3 Fox alleges that “Cree has been making, using, selling, and/or offering for sale silicon carbide substrates and products that use silicon carbide that practice the invention of the '026 patent [and the '130 patent], and thus, infringe one or more claims of [those patents.]” Compi. ¶¶ 21 and 34, ECF No. 1. Fox also alleges that Cree will continue to infringe those patents unless enjoined by the court. Id. ¶¶22 and 35. On August 30, 2010, Cree answered the Complaint and filed counterclaims against Fox seeking declarations that the claims of the '026 and '130 patents are (1) not infringed, (2) invalid, and (3) unenforceable. See Answer ¶¶ 126-135, ECF No. 12.

On April 11, 2011, Cree filed its Summary Judgment Motion. On April 25, 2011, Fox responded in opposition, and, on May 2, 2011, Cree replied. On June 10, 2011, the court issued its claim construction Opinion, in which it construed four (4) disputed terms and phrases from the '130 patent and seven (7) disputed terms and phrases from the '026 patent. See The Fox Group, Inc. v. Cree, Inc., 819 F.Supp.2d 490, 499-520, 2011 WL 2308694, at *6-23 (E.D.Va.2011). In light of the court’s claim construction, on June 28, 2011, Fox filed a Motion for Entry of Partial Summary Judgment of Non-Infringement of the '026 patent, and Dismissal Without Prejudice of Related Counterclaims (“Fox’s Summary Judgment Motion”).

On July 8, 2011, the court issued an order removing the trial date from the calendar pending resolution of Fox and Cree’s respective summary judgment motions. The court also granted Cree’s July 6, 2011, motion seeking leave to file a supplemental memorandum in further support of its Summary Judgment Motion, and directed that Fox may submit a supplemental opposition brief and that Cree may submit a supplemental reply brief. On July 13, 2011, Fox responded in opposition to Cree’s supplemental memorandum, and, on July 18, 2011, Cree filed its supplemental reply. Cree’s Summary Judgment Motion is fully briefed and ripe for review.

On July 20, 2011, the court granted Fox’s Summary Judgment Motion, and, accordingly, entered judgment of non-infringement of the '026 patent for Cree and dismissed Cree’s counterclaims related to the '026 patent. The Fox Group, Inc. v. Cree, Inc., 819 F.Supp.2d 520, 524, 2011 WL 2963580, at *3 (E.D.Va.2011). Cree’s Summary Judgment Motion is, therefore, DENIED, as MOOT, insofar as it seeks judgment of non-infringement of the '026 patent. Accordingly, the only issue before the court is whether there is a genuine issue of material fact concerning invalidity and non-infringement of the '130 patent.

II. The Asserted Claims 4

Fox alleges that Cree infringes claims 1 and 19 of the '130 patent. 5 Claim 1 asserts:

*528 A silicon carbide material comprising an axial region of re-crystallized single crystal silicon carbide with a density of dislocations of less than 10 4 per square centimeter, a density of micropipes of less than 10 per square centimeter, and a density of secondary phase inclusions of less than 10 per cubic centimeter.

See '130 patent col. 8 11.6-11, Ex. I to Compl., ECF No. 1-9 [hereinafter “'130 patent”]. Claim 19 requires “silicon carbide material” having the same density of dislocations, the same density of micro-pipes, and the same density of secondary phase inclusions as required by claim 1. Unlike claim 1, however, claim 19 requires a “silicon carbide seed crystal,” id. col. 9 1.38, and “a region of axially re-crystallized silicon carbide ... initiating at [the] growth surface of ... [the] seed crystal.” Id. cols. 9 1.41-10 1.1. The differences in claim 19 as compared to claim 1 are underscored below for ease of comparison:

19. A silicon carbide material, comprising:

A single crystal silicon carbide seed crystal, said single crystal silicon carbide seed crystal having a growth surface; and,
A region of axially re-crystallized silicon carbide, said region of axially re-crystallized silicon carbide initiating at said growth surface of said single crystal silicon carbide seed crystal, said region of axially re-crystallized silicon carbide having a density of dislocation of less than 10 4 per square centimeter, a density of micropipes of less than 10 per square centimeter, and a density of secondary phase inclusions of less than 10 per cubic centimeter.

Id. cols. 9 1.37-10 1.6 (emphasis added).

III. Claim Construction

On June 10, 2011, the court construed the '130 patent’s disputed terms and phrases as follows:

(1) “Axial region of re-crystallized single crystal silicon carbide” / “region of axially re-crystallized silicon carbide” means “portion of a silicon carbide crystal that is grown in a direction substantially perpendicular to the seed crystal plane by heating solid silicon carbide to form a vapor that then condenses onto the seed crystal.”
(2) “Density of dislocations” means “concentration of those defects in which lines of atoms in a crystal structure are displaced, including screw, edge, and basal plane dislocations.”
(3) “Density of micropipes” means “concentration of micropipes.” 6

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Fox Group, Inc. v. Cree, Inc., 819 F. Supp. 2d 524, 2011 U.S. Dist. LEXIS 87231, 2011 WL 3468352 (E.D. Va. 2011).

819 F. Supp. 2d 524 (Fox Group, Inc. v. Cree, Inc.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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