Greenthread, LLC v. OmniVision Technologies, Inc.

District Court, E.D. Texas·Decided May 1, 2024·No. 2:23-cv-00212·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS MARSHALL DIVISION

GREENTHREAD, LLC, § § Plaintiff, § § v. § CIVIL ACTION NO. 2:23-CV-00212-JRG § (LEAD CASE) OMNIVISION TECHNOLOGIES, INC., § § Defendant.

v. § CIVIL ACTION NO. 2:23-CV-00157-JRG § TEXAS INSTRUMENTS INC., § § Defendant. §

MEMORANDUM OPINION AND ORDER Before the Court are two related discovery motions in Lead Case No. 2:23-cv-212. First is Defendant OmniVision Technologies Inc.’s (“OmniVision”) Motion to Compel Greenthread’s Compliance with P.R. 3-1 and Strike Uncharted Products (the “Motion to Strike”). (Dkt. No. 85.) Having considered the Motion to Strike and the subsequent briefing, the Court finds that the Motion to Strike should be DENIED. Second is Plaintiff Greenthread, LLC’s (“Greenthread”) Motion to Compel OmniVision to Remove Improper Confidential Designations (the “Motion to Compel”). (Dkt. No. 94.) Having considered the Motion to Compel and the subsequent briefing, the Court finds that the Motion to Compel should be DENIED WITHOUT PREJUDICE. I. BACKGROUND The Asserted Claims in this case relate to the concentration and location of chemicals called “dopants” in semiconductor devices. For example, Claim 1 of the ’842 patent states: A semiconductor device, comprising: a substrate of a first doping type at a first doping level having first and second surfaces; a first active region disposed adjacent the first surface of the substrate with a second doping type opposite in conductivity to the first doping type and within which transistors can be formed; a second active region separate from the first active region disposed adjacent to the first active region and within which transistors can be formed; transistors formed in at least one of the first active region or second active region; and at least a portion of at least one of the first and second active regions having at least one graded dopant concentration to aid carrier movement from the first surface to the second surface of the substrate. (Dkt. No. 1-3 at 4:45-60.) The dopant concentration in a semiconductor product is not information that is ordinarily available to the public, but such can be determined through expensive reverse engineering. A. Greenthread’s Infringement Contentions Greenthread served its P.R. 3-1 infringement contentions on OmniVision on July 6, 2023. Greenthread identified over 200 Accused Products by their model numbers based on publicly available information from OmniVision’s website. The contentions include an infringement chart for a single exemplary product, the OmniVision OV24A1Q image sensor (the “OV24A1Q”), and Greenthread contends that the Accused Products are any product by OmniVision that “comprise[s] or consist[s] of the same or similar structures, features, or functionalities as the exemplary [product].” (Dkt. No. 85-2 at 3-4.) Greenthread’s claim chart primarily relies on a report detailing the reverse engineering of OmniVision’s OV24A1Q product (the “Tech Insights Report”). (Id.); (Dkt. No. 37 at 4.) OmniVision previously moved to dismiss this case under Rule 12(b)(6), arguing that Greenthread’s claim chart attached to the Complaint did not sufficiently notify OmniVision of its infringement theories, and that the chart definitively proved that some accused features were not present in the Accused Products. (See Dkt. No. 34.) The Court denied that motion. (Dkt. No. 90.) The claim chart at issue in the Motion to Strike is similar to the one attached to the Complaint. Both primarily rely on the reverse engineering of the OV24A1Q as presented in the Tech Insights Report and follow the same claim-by-claim analysis. However, the claim chart attached to the

infringement contentions also includes extensive annotations and analysis not found in the chart attached to the Complaint which further identifies the accused features and clarifies how such features infringe the Asserted Claims. B. The Parties’ Discovery Efforts The parties began negotiating the review of “Highly Sensitive Process Information” (“Process Information”) at least as of October 4, 2023. (Dkt. No. 93-3.) “Process Information” is any material that includes highly sensitive and proprietary process flows, recipes, or chip-level schematics. (Id. at 7.) Specifically, Greenthread sought production of “the doping profiles of the products identified in the infringement contentions” for the purposes of creating updated infringement contentions. (Id. at 23.) Greenthread inquired multiple times as to the time and location that Process Information would be made available for review. (Id.) OmniVision refused

to provide a concrete answer, insisting that it was unable to make such disclosures without first receiving more detailed infringement contentions detailing Greenthread’s infringement theories. (See id at 27-28.) OmniVision also represented that “[a]s a general rule, OmniVision does not have access to doping profiles” as that was “confidential information of the foundry.” OmniVision’s P.R. 3-4(a) disclosures were due October 16, 2023. However, OmniVision did not provide the address at which Process Information could be viewed until October 30—two weeks after the deadline and nearly a month after OmniVision had first reached out attempting to schedule review of such information. (Id. at 11.) OmniVision explained that the delay was due to the lack of clarity regarding Greenthread’s infringement contentions. (Id. at 15.) According to Greenthread, upon reviewing the Process Information, Greenthread discovered the documents contained “lots of information about the doping in its products.” (Dkt. No. 94 at 3) (emphasis in original). Further, according to Greenthread, none of the documents it reviewed appeared to meet the definition of “Process Information.” (Id.)

After review was completed, Greenthread requested printouts of 123 of the 5,000 documents that had been made available for review. OmniVision responded that it “objects to the production of all of these files in their entirety.” (Dkt. No. 93-3 at 9.) When asked for the basis of the objection, OmniVision explained that 123 files was “much more than we expected,” and it stated that Greenthread was “not complying with the terms of the protective order.” (Id. at 7.) Specifically, OmniVision argued that Greenthread was seeking to “print out Process Material as an alternative to reviewing Process Material electronically on the stand-alone computer.” (Id.) OmniVision also objected to the relevance of the documents, again pointing to its lack of understanding of Greenthread’s infringement theory from Greenthread’s infringement contentions. (Id.) Finally, OmniVision objected that the request was not “reasonable” as some

documents were “clearly seeking more than 20% of the process flow.” (Id. at 3.) On November 16, 2023, the parties met and conferred to resolve this dispute. (Dkt. No. 85- 4 at 2.) Following the meet and confer, OmniVision agreed to produce 44 of the 123 documents under the Attorney’s Eyes Only (“AEO”) designation, but it maintained its objections to printing the other 79 documents. (Id. at 4.) OmniVision memorialized the meet and confer in a letter dated November 17, 2023. Greenthread never responded to the letter. Greenthread also communicated its intent to have its expert reviewing documents starting “on Friday, December 15, 2023 . . . and continuing daily over the following week.” (Dkt. No. 94 at 4.) However, according to Greenthread, a “miscommunication” prevented its expert from starting Friday, December 15, 2023. When the expert arrived at OmniVision’s facility the following Monday, he was turned away because OmniVision did “not have the staff available to supervise the inspection.” (Id.) C. The Court’s Protective Order Paragraph 16 of the Protective Order governs the disclosure of Process Information. (Dkt.

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Greenthread, LLC v. OmniVision Technologies, Inc., (E.D. Tex. 2024).

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