In a pair of decisions, Express Scripts, Inc. v. Anne Arundel County, ___ A.3d ___, 2026 WL 797872 (Md. March 23, 2026), an opioid case, and Mayor & City Council of Baltimore v. B.P. P.L.C., ___ A.3d ___, 2026 WL 809501 (Md. March 24, 2025), a climate change case, the Supreme Court of Maryland had definitively shut the door to public nuisance tort litigation as a basis for having courts make what are fundamentally political decisions about the risks and benefits of legally distributed products. In both, the answer was an emphatic NO!!
We’ll take Express Scripts first, since it’s squarely in the Blog’s sweet spot.
The plaintiffs in Express Scripts sued a bunch of defendants, alleging they were pharmacy benefit managers, mail-order pharmacies and retail pharmacies, and because they were part of the distribution chain for FDA-approved and legally sold opioid pain medicine, they supposedly caused a public nuisance by spurring opioid abuse. In this litigation, the Maryland federal district court did the right thing and certified the public nuisance question to the MD Supreme Court:
Under Maryland’s common law, can the licensed dispensing of, or administration of benefit plans for, a controlled substance constitute an actionable public nuisance?
Express Scripts, 2026 WL 797872, at *1. A second question was certified, but the court’s negative answer to #1 mooted it.
Here’s Express Scripts’ short answer to that question:
We answer “no” to the first question. We hold that the licensed dispensing of, or administration of benefit plans for, a controlled substance does not constitute an actionable public nuisance. As discussed herein, Maryland’s public nuisance common law has not been expanded beyond the traditional historical principles − namely, that an action for public nuisance brought by a governmental entity on behalf of the public was not regarded as a tort, but instead as a basis for public officials to pursue criminal prosecutions or seek injunctive relief to abate harmful conduct. Although damages may be available in a private nuisance action (as they were under the common law), this Court has never recognized a government actor’s ability to recover damages in a public nuisance action.
Id. (emphasis added).
The longer answer in Express Scripts is, if anything, even better because – well – it’s longer (43 Westlaw pages), and it comprehensively rejects every argument the plaintiffs made in favor of using public nuisance against manufacturers of legal products. First off (after spending well over a dozen WL pages describing the statutory and regulatory framework), Express Scripts turned to common-law nuisance. One interesting tidbit that we didn’t realize is that the Second Restatement formulation of nuisance was an early example of what we have called American Law Institute transforming into “Always Liability Increases.” The Institute as a whole insisted that the draft not restate the law, as Dean Prosser had attempted to do, but instead put a pro-liability thumb on the scale in favor of “its [public nuisance] use in emerging environmental cases.” 2026 WL 797872, at *20. In order to “go on record in support of the emergent environmental movement,” a replacement reporter (after Dean Prosser resigned in disgust):
redrafted the definition of public nuisance and substituted the word “unreasonable” for the word “criminal”. . . . The new definition was adopted in 1972. With the substitution of a single word, the definition of “public nuisance” underwent a drastic expansion in the Second Restatement.
Id. Thus, it appears that the ALI has been engaging in its conception of social policy – rather than faithfully restating the law – as a basis for the Torts restatement, for a lot longer than we realized. The result was “very amorphous, open-ended language” in Restatement (Second) §821B. 2026 WL 797872, at *21. Even so, “there is nothing in the Second Restatement about public officials recovering damages for a harm to the public generally.” Id.
Express Scripts discussed Maryland public nuisance precedents − both common-law and statutory − at length, id. at *22-30. From this extensive discussion Express Scripts drew several “conclusions”:
- Public nuisance requires “an injury to the public at large” and is not strictly limited to “interfere[nce] with real property.”
- “[P]rivate nuisance is a tort involving a nontrespassory invasion of another’s interest in the private use and enjoyment of land.”
- “[W]e have declined invitations to expand the private nuisance action beyond its traditional common law formulation.”
- Governmental nuisance actions are “invalid[]” when “(1) the alleged conduct was not a nuisance per se” or “defined as a nuisance by statute or a code; or (2) the enforcement action was . . . arbitrary or unreasonable.”
- “[N]othing in our case law . . . adopt[s] an expansive tort of public nuisance based upon the [Second Restatement] definition contained in §821B.”
- It was unprecedented for a “government” to seek “damages for an injury to the public based upon a common public right” – only “injunctive relief” was allowed.
Id. at *33-34.
With that background, Express Scripts refused to expand public nuisance to include Second Restatement-based claims based on allegations of social externalities from legal products. The court agreed with criticism of that Restatement “for going far beyond the common law.” Id. at *35 (footnote omitted). The Second Restatement failed to state what “public nuisance” required beyond “non-exhaustive, open-ended factors” that litigants could use to pursue political objectives. Id. at *26. Rather, Express Scripts (like other state high courts) agreed with the Third Restatement:
[W]ith the adoption of the Third Restatement − 48 years after the adoption of the expanded “public nuisance” definition in the Second Restatement − the American Law Institute acknowledges that an expansive common law public nuisance tort is an “inapt vehicle” for a government entity to seek recovery in the form of economic damages arising from products that may create widespread societal concerns. . . . Comment b to §8 notes that “[a]n action by a public official will commonly lie to abate the nuisance by injunction but may not involve monetary recovery for harm done.” Notably, the drafters of the Third Restatement address the attempts by government actors to bring tort suits based on public nuisance to recover economic damages for products such as tobacco, firearms, and lead paint. The comment recognizes that liability based on public nuisance “has been rejected by most courts, and is excluded by this section, because the common law of public nuisance is an inapt vehicle for addressing the conduct at issue.” Id. §8 cmt. g (emphasis added). The comment explains that “[m]ass harms caused by dangerous products are better addressed through the law of products liability, which has been developed and refined with sensitivity to the various policies at stake.” Id. The drafters explain that, if another body of law does “not supply adequate remedies or deterrence,” then “the best response is to address the problems at issue through legislation that can account for all the affected interests.” Id.
2026 WL 797872, at *36 (emphasis original) (other citations omitted). Express Scripts agreed that “[t]he Third Restatement reflects a national trend of courts refusing to allow products-based public nuisance claims for economic damages.” Id. (citing a half-dozen appellate decisions). Thus, from a public nuisance perspective, the Court stated that it would not loosen the tort of public nuisance pursuant to the expansive provisions in the Second Restatement, and, accordingly, added several important delineations for how the new cases seek to improperly expand the tort:
(1) Harms to individuals, even lots of them, do not involve a public right:
[T]he County’s complaint fails to satisfy a primary requirement of a public nuisance action − namely, that the Defendants’ dispensing of opioids, and administration of benefit plans for opioids, affects a common public right. . . . No case of this Court has recognized a broad public right to be free from all potential harms associated with the prescribing and dispensing of opioids.
Id. at *37. The defendants engaged in “lawful” – and, indeed “medically necessary” activities under both federal and Maryland law. Id. at 39. They distributed products that were “not unfit for human consumption” and that “d[id] not cause harm to everyone who consumes them.“ Id.
(2) Public nuisance does not apply to the sale of legal products:
[W]e decline to recognize a public right to be free from the adverse effects associated with a lawful product being diverted, misused, or abused. To recognize a general common law “public right” would permit nuisance liability to be imposed on an endless list of manufacturers, distributors, and retailers of manufactured products that are intended to be used lawfully.
Id. at *40. The sort of public nuisance liability being proposed would improperly create “a public right so broad and undefined that the presence of any potentially dangerous instrumentality in the community could be deemed to threaten it.” Id. (quoting one of Bexis’ gun cases).
(3) Public nuisance should defer to regulatory regimes. Even if all other elements of the tort were met:
[W]e would nonetheless decline to recognize an expanded tort here given the extensive statutory and regulatory framework that governs the conduct. . . . [C]onduct that is fully authorized by statute, ordinance or administrative regulation does not subject the actor to tort liability. . . . [A] court should be reluctant to use its equitable powers to impose an injunctive remedy on an activity that is highly regulated by statute. . . . [T]he distribution of prescription opioids involves a complex subject matter that is a highly regulated activity under both federal and state law.
2026 WL 797872, at *40-41 (citation and quotation marks omitted) (emphasis original). “[L]itigation should not be used to achieve legislative goals.” Id. at *41 (again quoting the same gun case). Thus:
To the extent that the County seeks to impose tort liability for the Defendants’ lawful conduct undertaken pursuant to the federal and state regulatory schemes that authorize the lawful dispensing of opioids and the administration of benefit plans for licensed opioids, Congress and the General Assembly have determined that the social utility of the licensed dispensing of opioids outweighs the gravity of the harm in permitting their lawful dispensing. We decline to extend tort liability upon the basis of public nuisance where the Legislature has sanctioned the conduct by declaring it to be lawful.
Id. at *42. As for allegations of “unlawful” conduct, Express Scripts rejected a tort remedy because the “administrative enforcement remedies that are specifically enumerated within the statutory and regulatory scheme” belonged to “agencies entrusted by the Legislature,” not self-appointed plaintiffs, and those agencies “are better suited than judges or juries to determine in the first instance whether highly regulated and complex activity complies with the overlapping federal and state regulations.” Id.
In sum, in Maryland after Express Scripts, product related public nuisance is a bad idea whose time has passed. “Complex societal problems are best suited for the Legislature, and judicial restraint is the appropriate principle to apply.” Id.
Overall, the Express Scripts opinion is 43 Westlaw pages long with one concurrence and one concurrence/dissent. While the concurrence would define public right differently, it still concluded:
[Plaintiff] offers no principle for distinguishing a harm to the public at large from a widespread aggregation of individual injuries. In other words, [plaintiff’s] conception of a “public right” does not distinguish between a harm that affects everyone at large or everyone that interacts with the nuisance (contaminated drinking water) and harm that is widespread but ultimately affects a subset of the public that encounters the alleged nuisance (opioid consumption). Without such a distinction, any product that causes sufficient individual harm would give rise to a public nuisance claim − effectively collapsing the boundary between public nuisance and mass tort as well as providing state and local governments boundless enforcement power.
2026 WL 797872, at *44. The concurrence/dissent would not define ”public right” at all, leaving that to solely the General Assembly. Id. at *48.
Interestingly, neither the majority nor either of the other two opinions in Express Scripts even so much as mentioned the recent Fourth Circuit opinion in City of Huntington v. AmerisourceBergen Drug Corp., 157 F.4th 547 (4th Cir. 2025) (criticized here). As Blog readers well know, Huntington “predicted” (based on a couple of trial court opinions) that West Virginia would allow public nuisance in an opioid case. Well, Maryland is within the Fourth Circuit, and its complete omission of any mention of Huntington – while citing other public nuisance precedent from around the country – looks like a judicial nose-thumb at the Fourth Circuit. Evidently, no judge in Express Scripts considered Huntington worthy even of being distinguished or criticized.
Finally, while it’s not in our sandbox, we further note that later the same day, the Maryland Supreme Court reached the same conclusion – rejecting a public nuisance cause of action in a case involving legal products (so-called “fossil fuels”) – in the Baltimore v. B.P. climate change case. Much of the Baltimore v. B.P. decision involved issues (existence of federal common law and preemption) peculiar to federal statutes (the Clean Water and Air Acts) with no applicability to prescription medical product liability litigation. 2026 WL 809501, at *6-25. Baltimore v. B.P. reiterated that tort liability is not to be used to decide questions best left for the “political branches of government. Id. at *26.
Baltimore v. B.P. then turned to state-law claims, particularly public nuisance, and reiterated its holdings in Express Scripts:
The [plaintiffs] do not state a claim under Maryland common law for public nuisance. As we discussed in Express Scripts, “Maryland has not expanded the public nuisance doctrine beyond the traditional historical principles embodied in the common law − namely, that a public nuisance action was not regarded as a tort but was instead a public action by a government entity to pursue criminal prosecutions or seek injunctive relief to abate harmful conduct.” “This Court has never recognized a government entity’s ability to recover damages for public nuisance.” To the extent that the [plaintiffs] are seeking damages for public nuisance, such recovery exceeds the bounds of Maryland’s public nuisance doctrine. Moreover, . . . we . . . decline to expand Maryland’s common law of public nuisance to govern the conduct alleged . . . “given the extensive federal . . . statutory and regulatory framework that governs [this subject]. . . . Where the legislature has, through the enactment of comprehensive legislation, entrusted such highly complex matters to an agency having expertise of the same, we decline to expand common law nuisance to address the same conduct.
2026 WL 809501, at *28 (Express Scripts citations omitted). Further, climate change public nuisance litigation was simply absurd – the apotheosis of judicial triumphalism (the notion that litigation can solve everything):
[T]he notion that a local government . . . may pursue state law nuisance claims against the Defendants − seeking . . . to abate injuries arising from global greenhouse effects arising from worldwide conduct − is so far afield from any area of traditional state or local responsibility that it cannot be seriously contemplated.
Id. at *29 (emphasis added).
We have been fighting to prevent public nuisance from intruding on product liability ever since the theory (in its modern formulation) first reared its ugly head in firearms litigation nearly thirty years ago. To us, the claim that purported state law could ever declare that the manufacturing and marketing of FDA-approved products for their FDA-approved uses is a “public nuisance” is ridiculous. We are thrilled that yet another state high court has agreed with us.
We wish to acknowledge that parts of this blogpost were adapted (or plagiarized) from an excellent summary of the Express Scripts decision that we received from Phil Goldberg of Shook Hardy, who filed an amicus brief in that case.
Finally, the title of this post comes from a line in “Maryland My Maryland,” a borderline treasonous Civil War era song that was once the Maryland state anthem.