Carl Zeiss X-Ray Microscopy, Inc. v. Sigray, Inc.

District Court, N.D. California·Decided August 26, 2025·No. 5:21-cv-01129·Unknown

Opinion

CARL ZEISS X-RAY MICROSCOPY, Case No. 5:21-cv-01129-EJD INC., Plaintiff, v. SIGRAY, INC., Defendant.

From email correspondence with the Court’s courtroom deputy, the Court understands that the parties seek resolution of four issues before trial begins. In an effort to streamline trial proceedings, the Court addresses those four issues below. I. SIGRAY’S MOTION TO STRIKE Sigray submits that the Court made a factual error in its August 20, 2025 order regarding Sigray’s motion to strike. August Pretrial Order, ECF No. 375. In that Order, the Court declined to strike ATSs 9 and 12 in part because “Sigray did not object to the 2021 ID and conducted discovery based on that identification.” Id. at 3. Sigray argues that the Court’s decision not to strike ATSs 9 and 12 was incorrectly based on Zeiss’s Initial Trade Secret Identification dated June 23, 2021 (Ex. 1, ECF No. 274-2 at 1–48) rather than its Third Amended Identification dated December 27, 2021 (Ex. 4, ECF no. 274-2 at 125–77). The latter is the “2021 ID” upon which the parties proceeded to discovery. The Court agrees that the August Pretrial Order mistakenly analyzed the June 2021 identification instead of the December 2021 identification. As Sigray points out, it did in fact object to Zeiss’s use of the language “any portions thereof” in the June 2021 identification, resulting in Judge DeMarchi’s November 2021 order denying Zeiss’s motion to declare its trade secret identification sufficient. ECF No. 77. Zeiss subsequently dropped the “any portions thereof” language from the December 2021 identification. Without that language, Sigray’s argument that it suffers unfair surprise or prejudice from Zeiss’s asserting ATSs 9 and 12 now applies with greater force. However, that was not the sole basis for the Court’s decision not to strike ATSs 9 and 12. The fact remains that “Zeiss’s expert, Dr. Denbeaux, opined on ATSs 9 and 12, Sigray’s experts responded to Dr. Denbeaux’s report, and Sigray deposed Dr. Denbeaux.” August Pretrial Order at 3 (citing ECF No. 368-2 at 5, 7–8). Given that Sigray engaged in expert discovery on the very ATSs they argue Zeiss failed to properly identify, the Court still finds that Zeiss’s improper identification was rendered harmless. Sigray’s argument that this line of reasoning is inconsistent with the Court’s opinion on Zeiss’s MIL No. 2 is unavailing. There, the Court excluded Dr. Liu’s 2025 supplemental report because it backfilled opinions that could have been made in his initial 2023 report, and Sigray did not show that it was substantially justified in doing so. Id. at 8–9. Because the Court is not altering its decision not to strike ATSs 9 and 12, it declines Zeiss’s invitation to also reconsider the Court’s ruling as to ATSs 13 and 14. Accordingly, the Court will not disturb its decision not to strike ATSs 9 and 12 nor its decision to strike ATSs 13 and 14. II. SIGRAY’S MIL NO. 3: REASONABLE ROYALTY DAMAGES The parties also disagree about the extent to which Zeiss may seek reasonable royalty damages as a remedy. The Court views this dispute as presenting two separate issues and addresses them in turn. First, the parties disagree as to whether Zeiss may indirectly propose a royalty amount to the jury. According to the parties, Zeiss has agreed not to propose a royalty amount to the jury because Zeiss did not previously disclose a calculation for a specific royalty. Even so, Sigray is concerned that Zeiss may indirectly propose an amount by, for example, arguing that the royalty amount should be the same as its lost profits damages. The Court agrees that, if Zeiss has already agreed not to propose a specific royalty amount to the jury, it should not be permitted to do so in any manner. But other than offering the single example of a way Zeiss may try to indirectly propose a royalty amount, Sigray has not specified what exactly it seeks to prevent Zeiss from arguing. Given the vagueness of Sigray’s request, the Court will leave it to Sigray to object at trial if it believes Zeiss is attempting to indirectly propose a reasonable royalty amount, and the Court will rule accordingly. Next, Sigray contends that while Zeiss may seek a reasonably royalty for its patent damages, it may not do so for its trade secret misappropriation claims. Sigray also argues that, if the Court does allow Zeiss to seek reasonable royalty damages for trade secret misappropriation, the issue should be tried to the Court rather than the jury. The Court previously denied in part Sigray’s MIL No. 3 and allowed Zeiss to present evidence concerning a reasonable royalty. See ECF No. 361 at 2–3. However, in doing so the Court relied on statutory and Federal Circuit authority applicable only to damages for patent infringement. Id. (citing 35 U.S.C. § 284, Dow Chem. Co. v. Mee Indus., Inc., 341 F.3d 1370, 1381 (Fed. Cir. 2003)). The Court’s order therefore only pertained to reasonable royalty damages for patent infringement. At the outset, the Court sees no obvious reason to preclude Zeiss from also presenting a theory of reasonable royalty damages for its trade secret misappropriation claims. Zeiss asserts its trade secret misappropriation claims under the Defend Trade Secrets Act (DTSA) and the California Uniform Trade Secrets Act (CUTSA). ECF No. 15. Both statutes allow a plaintiff that prevails in a trade secret misappropriation suit to claim reasonable royalty damages if the plaintiff is unable to prove actual loss or unjust enrichment. See 18 U.S.C. § 1836(b)(3)(B) (“In a civil action brought under [the DTSA], a court may . . . award . . . in lieu of damages measured by any other methods, the damages caused by the misappropriation measured by imposition of liability for a reasonable royalty . . . .”); Cal. Civ. Code § 3426.3(b) (“If neither damages nor unjust enrichment caused by misappropriation are provable, the court may order payment of a reasonable royalty . . . .”). Further, the Court is not persuaded that Zeiss waived its right to seek a reasonable royalty for its trade secret claims. Zeiss reserved its right to seek such damages during discovery. See ECF No. 288-10 at 5–6 (Zeiss’s response to Sigray’s Interrogatory No. 16). That said, the Court finds it necessary to further discuss the issue of reasonable royalty damages with the parties before making a ruling. Specifically, the Court requires more information regarding what reasonable royalty evidence Zeiss intends to present, how it will be presented, what limitations should be placed on the evidence Zeiss may present, whether the jury (or the Court) will be expected to apply the Georgia-Pacific factors to the evidence presented, etc. Also, from what the Court can gather at this time, there appears to be conflicting case law on whether the jury or the Court decides the reasonable royalty. Compare Ajaxo Inc. v. E*Trade Fin. Corp., 187 Cal. App. 4th 1295, 1308 (2010) (“A reasonable royalty is a court-determined fee imposed upon a defendant for his or her use of a misappropriated trade secret.”), with Palantir Techs. Inc. v. Abramowitz, 639 F. Supp. 3d 981, 990 (N.D. Cal. 2022) (“[T]he Seventh Amendment guarantees federal litigants the right to a jury determination of reasonable royalties under the CUTSA.”). The parties should expect to discuss all of the above on August 27, 2025. III. ZEISS’S MIL NO. 4: POST-GRANT PROCEEDINGS The parties dispute the effect of the Court’s order denying Zeiss’s MIL No. 4. ECF No. 361 at 4. The

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Carl Zeiss X-Ray Microscopy, Inc. v. Sigray, Inc., (N.D. Cal. 2025).

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