Maurilia Montes, et al. v. Costco Wholesale Corporation, et al.

District Court, N.D. California·Decided June 18, 2026·No. 3:26-cv-02749·Unknown

Opinion

1 2 3 4 UNITED STATES DISTRICT COURT 5 NORTHERN DISTRICT OF CALIFORNIA 6 7 MAURILIA MONTES, et al., Case No. 26-cv-02749-JSC

8 Plaintiffs, RE: MOTION TO REMAND v. 9 Re: Dkt. No. 11 10 COSTCO WHOLESALE CORPORATION, et al., 11 Defendants.

12 13 This case arises out of a slip and fall at a Costco warehouse. (Dkt. No. 1 at 8-16.)1 14 Plaintiffs Maurilia Montes and Mario Montes sue Costco Wholesale Corporation (“Costco 15 Corporation”), Costco Wholesale Membership, Inc. (“Costco Membership”), and Caroline Wyatt 16 (“Ms. Wyatt”) for general negligence, premises liability, and loss of consortium. (Id.) Defendants 17 removed the case from Sonoma County Superior Court and asserted this Court has diversity 18 jurisdiction because Costco Membership and Ms. Wyatt are fraudulently joined. (Dkt. No. 1 at 1- 19 5.) Plaintiffs now move to remand to state court on the grounds Costco Membership and Ms. 20 Wyatt are not fraudulently joined, so the Court does not have diversity subject matter jurisdiction. 21 (Dkt. No. 11.) After carefully considering the parties’ submissions, and with the benefit of oral 22 argument on June 18, 2026, the Court GRANTS the motion to remand. Defendants have not met 23 their heavy burden of showing there is no possibility Plaintiffs could state a claim against Ms. 24 Wyatt, so they have not shown the Court has diversity jurisdiction. 25 // 26 // 27 1 BACKGROUND I. Complaint Allegations 2 Ms. Montes and Mr. Montes are California residents, Costco Corporation is a Washington 3 corporation and Ms. Wyatt is a California resident. (Dkt. No. 1 at 9.) On February 24, 2024, Ms. 4 Montes “was an invitee” at a Costco Warehouse in Santa Rosa (the “Premises”) and “suffered a 5 slip and fall and sustained serious injuries.” (Id. at 10-11.) At that time, “the Premises were 6 owned, leased, operated, occupied, managed, maintained, supervised, repaired, inspected, 7 renovated, fixed, and/or otherwise controlled by Defendants.” (Id. at 11). “Defendants knew or 8 reasonably should have known that the choice of floor(s)/flooring at the Premises creates a highly 9 dangerous, slippery surface when a liquid type of substance is on the floor,” and that it “would 10 increase the risk of the slip and fall danger.” (Id.) “Defendants also had a policy in place at the 11 Premises that was insufficient for keeping the Premises free from slip and/or trip and fall 12 dangerous conditions on the floors and Defendants did not use due care in inspecting the Premises 13 for slip and fall hazards.” (Id.) 14 “Due to Defendants’ acts and/or omissions, the Premises had liquid substances and/or a 15 dangerous, hazardous condition on its floors thereby causing and/or creating a slip and/or trip and 16 fall hazard at the Premises.” (Id.) “Defendants made this choice and/or failed to take the 17 reasonable actions to prevent the danger of the floors at the Premises for reasons of economic gain 18 and to save money and increase their business profits.” (Id. at 12.) 19 20 II. Procedural History 21 Plaintiffs sued Defendants in Sonoma County Superior Court for general negligence, 22 premises liability, and loss of consortium. (Dkt. No. 1 at 8-16.) Defendants timely removed to 23 this Court based on diversity jurisdiction. (Id. at 1-5.) Plaintiffs now move to remand. (Dkt. No. 24 11.) 25 LEGAL STANDARD 26 Diversity jurisdiction requires “complete diversity of citizenship; each of the plaintiffs 27 must be a citizen of a different state than each of the defendants,” Morris v. Princess Cruises, Inc., 1 U.S.C. § 1332(a)(1). “[O]ne exception to the requirement of complete diversity is where a non- 2 diverse defendant has been ‘fraudulently joined.’” Morris, 236 F.3d at 1067. 3 “There are two ways to establish improper joinder: (1) actual fraud in the pleading of 4 jurisdictional facts, or (2) inability of the plaintiff to establish a cause of action against the non- 5 diverse party in state court.” Grancare, LLC v. Thrower by & through Mills, 889 F.3d 543, 548 6 (9th Cir. 2018) (quotation marks and citations omitted). “Fraudulent joinder is established the 7 second way if a defendant shows that an individual joined in the action cannot be liable on any 8 theory.” Id. (cleaned up). “But if there is a possibility that a state court would find that the 9 complaint states a cause of action against any of the resident defendants, the federal court must 10 find that the joinder was proper and remand the case to the state court.” Id. (quotation marks and 11 citation omitted); see also Morris, 236 F.3d at 1068 (finding sham defendant when “it is 12 abundantly obvious that [a plaintiff] could not possibly prevail”). 13 So, “the test for fraudulent joinder and for failure to state a claim under Rule 12(b)(6) are 14 not equivalent.” Grancare, 889 F.3d at 549; see also id. (“Because the purpose of the fraudulent 15 joinder doctrine is to allow a determination whether the district court has subject matter 16 jurisdiction, the standard is similar to the ‘wholly insubstantial and frivolous’ standard for 17 dismissing claims under Rule 12(b)(1) for lack of federal question jurisdiction.” (citations 18 omitted)). 19 Ultimately, “[a] defendant invoking federal court diversity jurisdiction on the basis of 20 fraudulent joinder bears a heavy burden since there is a general presumption against [finding] 21 fraudulent joinder.” Id. at 548 (quotation marks and citation omitted); see also Canela v. Costco 22 Wholesale Corp., 971 F.3d 845 (9th Cir. 2020) (“A defendant seeking removal has the burden to 23 establish that removal is proper.” (quotation marks and citation omitted)). And courts “reject 24 federal jurisdiction if there is any doubt as to the right of removal in the first instance.” Grancare, 25 889 F.3d at 550 (quotation marks and citation omitted). 26 DISCUSSION 27 The parties agree Plaintiffs are California citizens, Costco Corporation is a Washington 1 also allege, and Defendants do not dispute, Ms. Wyatt is a California citizen. (Id. at 3, 9.) So, 2 Costco Membership and Ms. Wyatt prevent complete diversity unless Defendants establish their 3 fraudulent joinder. Because Defendants do not accuse Plaintiffs of fraud in the pleading of 4 jurisdictional facts, Defendants must show Plaintiff cannot “establish a cause of action against” 5 Ms. Wyatt and Costco Membership “in state court.” See Grancare, 889 F.3d at 548. 6 I. Defendants Rely on an Incorrect Fraudulent Joinder Standard 7 Defendants deem Smith v. Southern Pacific Co., 187 F.2d 397 (9th Cir. 1951) the “proper 8 controlling case” because “the Court [there] ruled that a complaint must state a proper cause of 9 action against an individual defendant in order to defeat diversity.” (Dkt. No. 12 at 2.) They 10 assert in Smith, “the court found a complaint that did not plead specific facts showing specific 11 action or inaction of the individual defendant and [sic] was thus insufficient to defeat diversity 12 jurisdiction.” Id. Relying on the standard presented in Smith, Defendants assert Plaintiffs’ 13 complaint does not defeat diversity jurisdiction because at the time it was removed from state 14 court it did not allege facts showing Ms. Wyatt or Costco Membership could be held liable. Id. 15 Defendants also argue “Plaintiffs’ complaint further alleges causes of action against all defendants 16 in conclusory terms which lack any specificity and thus Ms. Wyatt and Costco Wholesale 17 Membership should be considered sham defendants.” (Dkt. No. 12 at 3). 18 Defendants apply the wrong standard.

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Maurilia Montes, et al. v. Costco Wholesale Corporation, et al., (N.D. Cal. 2026).

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Related

Smith v. Southern Pac. Co. (Two Cases)
187 F.2d 397 (Ninth Circuit, 1951)
Padilla v. AT & T CORP.
697 F. Supp. 2d 1156 (C.D. California, 2009)
Grancare v. Ruth Thrower
889 F.3d 543 (Ninth Circuit, 2018)
Liliana Canela v. Costco
971 F.3d 845 (Ninth Circuit, 2020)