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Caston v. Hoffmann-La Roche, Inc.
24-2920
| 9th Cir. | Nov 17, 2025
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*1 Before: HAMILTON, R. NELSON, and BUMATAY, Circuit Judges. [*] *2 The petition for panel rehearing, Dkt. No. 71, is granted. Fed. R. App. P. 40; 9th Cir. R. 40-1.

The memorandum disposition filed on October 7, 2025, No. 24-2920, No. 24- 3349, is hereby amended and the amended memorandum disposition is filed concurrently with this order. No future petitions for rehearing or rehearing en banc will be entertained.

FILED

NOT FOR PUBLICATION NOV 17 2025

UNITED STATES COURT OF APPEALS MOLLY C. DWYER, CLERK U.S. COURT OF APPEALS FOR THE NINTH CIRCUIT ANDREA M. CASTON; RICHARD No. 24-2920

GITHENS; PATRICK EUGENE D.C. No. WAGHER; KENDRICK ALLEN, 3:23-cv-00928-TLT

Plaintiffs - Appellants,

AMENDED MEMORANDUM [*] v.

HOFFMANN-LA ROCHE, INC.; ROCHE

LABORATORIES INC.; GENENTECH,

INC.; GENENTECH USA INC,

Defendants - Appellees.

ANDREA M. CASTON; RICHARD No. 24-3349 GITHENS; PATRICK EUGENE D.C. No.

WAGHER; KENDRICK ALLEN,

3:23-cv-00928-TLT Plaintiffs - Appellees,

v.

HOFFMANN-LA ROCHE, INC.; ROCHE

LABORATORIES INC.,

Defendants - Appellants,

and *4 GENENTECH, INC., GENENTECH USA

INC,

Defendants. Appeal from the United States District Court for the Northern District of California Trina L. Thompson, District Judge, Presiding Argued and Submitted September 18, 2025 San Francisco, California

Before: HAMILTON, R. NELSON, and BUMATAY, Circuit Judges. [**]

Appellant s, four former servicemembers, appeal the district court’s dismissal of their products-liability class action against Hoffmann La Roche Inc. and Roche Laboratories Inc. (“Roche Defendants”) and Genentech, Inc. and Genentech USA, Inc. (“Genentech Defendants”). The Roche and Genentech Defendants cross- appeal, contending that Appellants lack Article III standing to bring a class action for medical monitoring.

We review legal questions and dismissal for lack of jurisdiction de novo. CollegeSource, Inc. v. AcademyOne, Inc. , 653 F.3d 1066, 1073 (9th Cir. 2011); Brown v. Duringer L. Grp. PLC , 86 F.4th 1251, 1253 (9th Cir. 2023). We affirm in part, vacate in part, and remand.

1. The district court erred in dismissing Appellants ’ products-liability claims *5 under the political question doctrine based on the FDA’s approval of mefloquine. The political question doctrine is a “narrow exception” that applies only when adjudication will “certainly and inextricably” require courts to decide issues constitutionally committed to another branch. Zivotofsky v. Clinton , 566 U.S. 189, 195 (2012); Cooper v. Tokyo Elec. Power Co. , 860 F.3d 1193, 1214 (9th Cir. 2017). Federal and state courts have consistently adjudicated design-defect and failure-to- warn claims regarding FDA-approved pharmaceuticals without treating them as nonjusticiable. See, e.g., Mut. Pharm. Co. v. Bartlett , 570 U.S. 472, 476 77 (2013) (addressing whether state-law design-defect claims for FDA-approved generics are preempted — not whether they are nonjusticiable); Wyeth v. Levine , 555 U.S. 555, 573 (2009) (adjudicating design-defect and failure-to-warn claims against brand- name manufacturer); PLIVA, Inc. v. Mensing , 564 U.S. 604 (2011). The political question doctrine does not bar ordinary product-liability claims merely because the FDA regulates pharmaceuticals.

Likewise, it would be premature to invoke the political question doctrine b ased on the military’s approval of mefloquine. Appellants argue that their claims rest on Appellees ’ own conduct without requiring judicial review of military judgments. At this stage, it is speculative to consider how the military dimension of the political question doctrine might come into play. The district court may revisit the issue at a later stage of this litigation.

2. The district court correctly concluded there is no general or specific jurisdiction over the Roche Defendants.

A federal court has general jurisdiction over a corporation where the corporation is “at home.” Daimler AG v. Bauman , 571 U.S. 117, 137 (2014). A corporation is “at home” only in its state of incorporation and principal place of business —save “exceptional” cases. See id. at 137 39 & n. 19; Ford Motor Co. v. Mont. Eighth Jud. Dist. Ct. , 592 U.S. 351, 358 (2021); Ranza v. Nike, Inc. , 793 F.3d 1059, 1069 (9th Cir. 2015). The Roche Defendants’ sworn affidavit established that, at the filing of Appellants’ complaint in March 2023, the companies’ officers directed and controlled activities from New Jersey — its “nerve center.” See Hertz Corp. v. Friend , 559 U.S. 77, 91 (2010). To rebut this, Appellants present older corporate materials, including information from May 2022, and merger-era statements. These stale documents do not create a genuine dispute about Roche Defendants’ corporate activities , and “we may not assume the truth of allegations … contradicted by affidavit.” Data Disc, Inc. v. Sys. Tech. Assocs., Inc. , 557 F.2d 1280, 1284 (9th Cir. 1977).

Nor is there specific jurisdiction. Appellants claims arise from their ingestion of mefloquine overseas and at East Coast military bases — not in California. Thus, Appellants cannot show that their injuries “arise out of or relate to” California - directed conduct by the Roche Defendants. See Bristol-Myers Squibb Co. v. *7 Superior Court , 582 U.S. 255, 262 (2017); Impossible Foods Inc. v. Impossible X LLC , 80 F.4th 1079, 1086 (9th Cir. 2023). Allegations that a military agency, the Defense Logistics Agency, operates facilities in California and that products entered the forum via national distribution are insufficient; mere placement of a product into the stream of commerce, without more, is not purposeful direction toward the forum. Holland Am. Line Inc. v. Wärtsilä N. Am., Inc. , 485 F.3d 450, 459 (9th Cir. 2007).

We thus affirm the dismissal of claims against the Roche Defendants, but without prejudice and based only on lack of personal jurisdiction.

3. Instead of damages for the alleged injuries caused by mefloquine, Appellants seek a medical-monitoring program to redress any potential future neurological and psychiatric injuries caused by the anti-malarial drug. To establish Article III standing, Plaintiffs must show that it is “likely, as opposed to merely speculative” that the requested relief will remedy the alleged injury. Lujan v. Defs. of Wildlife , 504 U.S. 555, 561 (1992) (simplified); see Spokeo, Inc. v. Robins , 578 U.S. 330, 338 (2016).

As currently pled, it is unclear whether medical monitoring would redress Appellants’ alleged future harms against the remaining Genentech Defendants. For example, Appellees contend that Appellants ’ conditions have fully manifested, that they have already undergone extensive testing and treatment, and that additional monitoring would not materially alter their care because their treatment would not *8 meaningfully change. At oral argument, however, Appellants ’ counsel stated that they could amend their complaint to cure any redressability defects. Because amendment may resolve these potential standing deficiencies against the Genentech Defendants, we remand with instructions to allow Appellants to amend their complaint to clarify how the requested monitoring program would likely redress their alleged injuries. See Hoang v. Bank of Am., N.A. , 910 F.3d 1096, 1102 03 (9th Cir. 2018) (“Leave to amend can a nd should generally be given, even in the absence of such a request by the party,” so long as amendment would “not be futile”) ; Henry A. v. Willden , 678 F.3d 991, 1005 (9th Cir. 2012); Maya v. Centex Corp. , 658 F.3d 1060, 1072 (9th Cir. 2011); Fed. R. Civ. P. 15(a)(2).

Finally, we cannot affirm dismissal of claims against the Genentech Defendants on the alternative ground of preemption under the reasoning of PLIVA, Inc. v. Mensing , 564 U.S. 604 (2011). All parties on appeal agree that the Genentech Defendants are not generic manufacturers of mefloquine. We express no view as to whether Plaintiffs’ claims against the Genentech Defendants may be preempted for reasons other than that the Genentech Defendants are generic manufacturers.

Appellants’ motion to dismiss the cross -appeal is denied as moot. Pharmaceutical Research and Manufacturers of America’s motion for leave to file an amicus brief is granted.

Each party shall bear its own costs on appeal.

AFFIRMED in part ; VACATED in part , and REMANDED .

[*] The Honorable David F. Hamilton, United States Circuit Judge for the Court of Appeals, 7th Circuit, sitting by designation.

[*] This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3.

[**] The Honorable David F. Hamilton, United States Circuit Judge for the Court of Appeals, 7th Circuit, sitting by designation.

Case Details

Case Name: Caston v. Hoffmann-La Roche, Inc.
Court Name: Court of Appeals for the Ninth Circuit
Date Published: Nov 17, 2025
Docket Number: 24-2920
Court Abbreviation: 9th Cir.
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