Ameth Santiago-Ríos v. MSD International GmbH LLC

CourtDistrict Court, D. Puerto Rico
DecidedMarch 30, 2026
Docket3:24-cv-01170
StatusUnknown

This text of Ameth Santiago-Ríos v. MSD International GmbH LLC (Ameth Santiago-Ríos v. MSD International GmbH LLC) is published on Counsel Stack Legal Research, covering District Court, D. Puerto Rico primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Ameth Santiago-Ríos v. MSD International GmbH LLC, (prd 2026).

Opinion

UNITED STATES DISTRICT COURT FOR THE DISTRICT OF PUERTO RICO

Ameth Santiago-Ríos

Plaintiff, Civil No. 24-1170 (GLS)

v.

MSD International GmbH LLC,

Defendant.

OPINION AND ORDER Before the Court is Defendant MSD International GmbH (Puerto Rico Branch) LLC’s motion for summary judgment. Docket. Nos. 51, 52. Plaintiff Ameth Santiago-Ríos opposed Defendant’s motion at Docket Nos. 69, 70. Defendant replied at Docket Nos. 82, 83. For the reasons set forth below, Defendant’s motion for summary judgment is GRANTED. I. Procedural Background Plaintiff initiated this action in the Court of First Instance of Puerto Rico, alleging wrongful termination and discrimination, and seeking damages. Docket No. 1. Defendant subsequently removed the case to this Court on diversity grounds. In his Amended Complaint, Plaintiff desisted of the discrimination claim and claimed that, after twenty-five years as a chemical analyst, he was unjustly dismissed from his position in violation of Puerto Rico law. Docket No. 12. Plaintiff alleged that he had never been reprimanded for his testing practices and that Defendant’s proffered reason for his termination— his alleged failure to contemporaneously record dissolution test data in an electronic notebook— was pretextual and insufficient to establish just cause. Id. Although Plaintiff acknowledged “anticipating” certain data entries, he contended that he was not adequately trained to use the electronic system, and that such “anticipation” did not compromise data integrity so long as the final data recorded was accurate. Id. at p. 6. Based on these allegations, Plaintiff argued that his termination constituted a reckless violation of the Puerto Rico Unjust Dismissal Act, Law 80 of May 30, 1976, as amended, P.R. LAWS ANN. tit. 29 § 185a et seq. (“Law 80”) and seeks the payment of damages, accrued benefits, unpaid wages, and attorney’s fees by Defendant. Defendant moves for summary judgment arguing that, pursuant to the undisputed material facts, Plaintiff’s actions constituted just cause for termination. Docket Nos. 51, 52. Defendant claims that Plaintiff failed to properly conduct certain dissolution tests by falsely certifying that required laboratory procedures had been completed before being carried out. Docket No. 52 at p. 4. According to Defendant, this conduct violated internal policies designed to ensure compliance with federal and other regulatory requirements and warranted termination. Plaintiff counters that inadequate training and the failure of multiple reviewing employees to detect any alleged errors give rise to genuine issues of material fact on the matter of just cause. Docket Nos. 69, 70. Plaintiff emphasizes that four separate employees reviewed his work without identifying any alleged deficiencies. He contends that they all lacked adequate training, which explains why Plaintiff and the four other employees failed to comply with Defendant’s testing standard. Docket No. 70 ¶ 17. In the alternative, Plaintiff argues that Defendant acted arbitrarily by treating the other four employees more favorably. Id. ¶ 16. In reply, Defendant argues that Plaintiff’s opposition fails to comply with Local Rule 56(c). Defendant claims that Plaintiff admitted most of its statements of material facts and failed to contest the rest when he did not cite specific evidence in the record to sustain his denials, as required by Local Rule 56(c). Docket No. 82. Defendant further contends that Plaintiff’s additional statements of facts are not to be considered because they are not supported by references to the evidence in the record. Id. Finally, Defendant asserts that Plaintiff improperly sought to manufacture a factual dispute by submitting a “sham affidavit,” intended to change his deposition testimony. Id. II. Legal Standard Summary judgment under Rule 56 of the Federal Rules of Civil Procedure is warranted when the moving party demonstrates 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). A dispute is considered genuine if “a reasonable jury, drawing favorable inferences, could resolve it in favor of the nonmoving party.” Velázquez-Pérez v. Developers Diversified Realty Corp., 753 F.3d 265, 270 (1st Cir. 2014) (citation omitted). A fact is “material” if it potentially affects the outcome of the suit. American Steel Erectors, Inc. v. Local Union No. 7, 536 F.3d 68, 75 (1st Cir. 2008). A party moving for summary judgment bears the burden of proving that there are no genuine issues of material fact and that judgment as a matter of law is warranted. Adickes v. S.H. Kress & Co., 398 U.S. 144, 159 (1970). The moving party “may affirmatively produce evidence that negates an essential element of the non-moving party’s claim” or “point to evidentiary materials already on file . . . that demonstrate that the non-moving party will be unable to carry its burden of persuasion at trial.” Carmona v. Toledo, 215 F.3d 124, 132 (1st Cir. 2000) (citing Celotex Corp. v. Catrett, 477 U.S. 317, 325 (1986)). “[I]f the summary judgment record satisfactorily demonstrates that the plaintiff’s case is, and may be expected to remain, deficient in vital evidentiary support, this may suffice to show that the movant has met its initial burden.” Ocasio-Hernández v. Fortuño-Burset, 777 F.3d 1, 4–5 (1st Cir. 2015) (citing Carmona, 215 F.3d at 133). The non-movant must demonstrate “through submissions of evidentiary quality, that a trial worthy issue persists.” See Iverson v. City of Bos., 452 F.3d 94, 98 (1st Cir. 2006). However, when the non-movant bears the ultimate burden of proof at trial, the non-movant may not “rely on an absence of competent evidence, but must affirmatively point to specific facts that demonstrate the existence of an authentic dispute.” McCarthy v. Nw. Airlines, Inc., 56 F.3d 313, 315 (1st Cir. 1995). In evaluating a motion for summary judgment, the court must view “the record in the light most favorable to the nonmovant and must make ‘all reasonable inferences in that party’s favor.’” Espacio Residential, LLC v. Gómez-Sánchez, 2023 WL 3548974, at *2 (D.P.R. 2023) (quoting García-García, 878 F.3d at 417). But while the Court draws reasonable inferences from the record in the light most favorable to the non-movant, it casts aside and ignores “conclusory allegations, improbable inferences, and unsupported speculation.” See García-García v. Costco Wholesale Corp., 878 F.3d 411, 417 (1st Cir. 2017) (internal quotations and citations omitted). III. Uncontested Facts a. Plaintiff Failed to Comply with Local Rule 56(c) Local Rule 56 requires that a motion for summary judgment be supported by a “separate, short, and concise” statement of material facts which the moving party deems present “no genuine issue of material fact to be tried.” Local Rule 56(b).

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Ameth Santiago-Ríos v. MSD International GmbH LLC, Counsel Stack Legal Research, https://law.counselstack.com/opinion/ameth-santiago-rios-v-msd-international-gmbh-llc-prd-2026.