Nina Xiaoyan Li v. Merck & Co., Inc., et al.

District Court, N.D. California·Decided November 7, 2025·No. 4:23-cv-03347·Unknown

Opinion

NINA XIAOYAN LI, Case No. 23-cv-03347-JSW Plaintiff, ORDER GRANTING IN PART AND v. DENYING IN PART DEFENDANTS’ MOTION FOR SUMMARY MERCK & CO., INC., et al., JUDGMENT AND DENYING PLAINTIFF’S MOTION FOR Defendants. SUMMARY JUDGMENT Re: Dkt. Nos. 147, 152 Now before the Court are the motion for summary judgment filed by Defendants Merck & Co., Inc., MRL San Francisco LLC, Merck Sharp & Dohme, LLC, and Merck Sharp & Dohme, Corp. (collectively “Merck” or “Defendants”) and the cross-motion for summary judgment filed by Plaintiff Nina Li. Merck moves for summary judgment on Plaintiff’s second, third, and fourth causes of action and their own first and second causes of action. Plaintiff moves for summary judgment on Merck’s counterclaims for misappropriation of trade secrets and breach of contract. BACKGROUND Plaintiff worked as a scientist at Merck from 2006 to 2023. Her claims of discrimination and retaliation relate only to the latter period of her employment, from July 2020 to March 2023, when she was supervised by Alexander Loktev. Plaintiff reported Loktev for alleged bias against one of her mentees, James Zhang, which she claims lead to Zhang’s decision to quit working at Merck. Although she had previously participated in interviewing prospective candidates, Plaintiff exclusion was based on racial motives, but Loktev claimed he could no longer trust her when she disparaged Merck’s program to a candidate. After Zhang left, Plaintiff alleges that she was no longer assigned the role as a mentor. Loktev claimed she was criticized as a mentor and had not been doing a good job previously with Zhang. Plaintiff also claims that, after Zhang left, Loktev began to deprive her of support and forced her to get resources from other scientists or sites to advance her projects. Plaintiff also claims that Loktev began to remove her from high-profile studies and teams. Loktev claims that, during this time, Plaintiff excluded him from her team’s regular meetings and updates. At the end of 2021 and for the first time in her career at Merck, Plaintiff received an “improvement required” evaluation from her supervisor, in response to which Plaintiff submitted a detailed rebuttal listing her various accomplishments. Plaintiff alleges that the poor evaluation occurred 10 weeks after she reported discrimination and retaliation by Loktev to HR and two months after her March 2022 report of discrimination. In early March 2022, after the poor evaluation, Plaintiff reported to HR Director Freishtat that she was being subjected to retaliation and requested a third-party review of materials relating to the facts underlying both the performance review and her allegations of retaliation in being dropped from interviews, high-profile projects, and being denied resources for her work. In August 2022, Merck’s Office of Ethics (“OOE”) opened an investigation in response to Plaintiff’s reports of retaliation. On November 1, 2022, Loktev issued a “Performance Expectations Memo” threatening Plaintiff’s termination on the basis of reported poor communication and leadership behavior. Plaintiff alleges that this adverse action occurred two months after Loktev was interviewed by the OOE as the subject of Plaintiff’s discrimination and retaliation complaint. Again, in his year-end review of Plaintiff, Loktev evaluated Plaintiff as “Improvement Required.” Plaintiff alleges that Loktev overlooked and misrepresented the feedback from stakeholders and solicited input from non-stakeholders as well. Merck’s OOE investigated Plaintiff’s three complaints of discrimination and retaliation and found them each unfounded. On March 9, 2023, Plaintiff reported to Loktev’s office for her year-end review. When she she was escorted briefly to her desk and then down to the lobby to exit the building. After her termination, there is evidence in the record that Plaintiff continued to discuss issues with Merck employees about her own employment contentions as well as data generated by Merck. The Court shall address other additional facts as necessary in the remainder of this order. A. Legal Standard on Motion for Summary Judgment. Summary judgment is warranted “if the movant shows that there is no genuine dispute as to any material fact and the movant is entitled to judgment as a matter of law.” Fed. R. Civ. P. 56(a). Material facts are those which may affect the outcome of the case. Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248 (1986). A dispute is genuine if there is sufficient evidence for a reasonable jury to find for the nonmoving party. Id. at 248-49. “The trial court’s inquiry is not whether a reasonable trier of fact is likely to find in favor of the opposing party, but whether it could do so.” Hawkins v. Kroger Co., 512 F. Supp. 3d 1079, 1085 (S.D. Cal. 2021) (citing McIndoe v. Huntington Ingalls, 817 F.3d 1170, 1176 (9th Cir. 2016)). The Court views the evidence in the light most favorable to, and makes all reasonable inferences in favor of, the nonmoving party. Tolan v. Cotton, 572 U.S. 650, 656-57 (2014). The Court does not weigh conflicting evidence or make credibility determinations. Zetwick v. Cnty. of Yolo, 850 F.3d 436, 441 (9th Cir. 2017). The party moving for summary judgment bears the initial burden of identifying those portions of the pleadings, discovery, and affidavits which demonstrate the absence of a genuine issue of material fact. Celotex Corp. v. Catrett, 477 U.S. 317, 323 (1986). If the moving party meets its burden, the nonmoving party must then go beyond the pleadings and, by its own affidavits or exhibits, demonstrate a genuine issue of fact remains for trial. Id. B. Triable Facts Remain as to Discrimination Claim. California has adopted a three-stage burden-shifting test for trying claims of discrimination. Guz v. Bechtel Nat’l, Inc., 24 Cal. 4th 317, 354 (2000) (citing, inter alia, Texas Dep’t of Cmty. Affairs v. Burdine, 450 U.S. 248 (1981)). Under this framework, a plaintiff must discrimination, a plaintiff must allege (1) membership in a protected group; (2) qualification for the job in question; (3) an adverse employment action; and (4) circumstances that support an inference of discrimination. Id. at 355; see also McDonnell Douglas v. Green, 411 U.S. 792, 802 (1973). “The burden of establishing a prima facie case of disparate treatment is not onerous.” Burdine, 450 U.S. at 253. Actual proof of discrimination is not required to establish a prima facie case; plaintiff must merely raise an inference that discrimination has occurred. See Warren v. City of Carlsbad, 58 F.3d 439, 442 (9th Cir. 1995) (holding that even a “de minimus´ showing is sufficient to establish a prima facie case); Lowe v. City of Monrovia, 775 F.2d 998, 1005 (9th Cir. 1985) (holding that the plaintiff need only offer evidence which “gives rise to an inference of unlawful discrimination.”). Once the plaintiff establishes a prima face case, “a presumption of discrimination arises.” Guz, 24 Cal. 4th at 355. After plaintiff establishes a prima facie case, the burden then shifts to the defendant to articulate a legitimate, nondiscriminatory reason

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Nina Xiaoyan Li v. Merck & Co., Inc., et al., (N.D. Cal. 2025).

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