Steamfitters Local Union No. 420, individually and on behalf of all others similarly situated v. United Biosource Corporation, now known as United Biosource LLC, a wholly owned subsidiary of United Biosource Holdings, Inc.

District Court, E.D. Pennsylvania·Decided August 17, 2026·No. 2:19-cv-03047·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF PENNSYLVANIA

STEAMFITTERS LOCAL UNION NO. CIVIL ACTION 420, individually and on behalf of all others similarly situated, Plaintiff,

v. NO. 19-3047

UNITED BIOSOURCE CORPORATION, now known as UNITED BIOSOURCE LLC, a wholly owned subsidiary of UNITED BIOSOURCE HOLDINGS, INC., Defendant.

HODGE, J. August 17, 2026 MEMORANDUM I. INTRODUCTION This case is a putative class action filed by Plaintiff Steamfitters Local Union No. 420 (“Plaintiff”) in 2019 alleging former defendant Mallinckrodt ARD LLC (“Mallinckrodt”), the manufacturer of the prescription drug H.P. Acthar Gel (“Acthar”), and United Biosource Corporation (“Defendant” or “UBC”) conspired to remove Acthar from retail distribution, raise its price by over 100,000%, and market it to the purported class for uses and doses unapproved by the FDA. Plaintiff is a third-party payor seeking to recover overpayments for Acthar caused by Mallinckrodt and Defendant’s alleged scheme to inflate the price of the drug. Plaintiff’s Complaint (ECF No. 1 (“Compl.”)) brings claims for violations of the Racketeer Influenced and Corrupt Organizations Act (“RICO”) (Counts 1–2), violation of Pennsylvania’s Unfair Trade Practices and Consumer Protection Law (“UTPCPL”) (Count 3), violations of forty-four states’ consumer protection laws (Count 4), negligent misrepresentation (Count 5), aiding and abetting/conspiracy (Count 6), unjust enrichment (Count 7), and declaratory and injunctive relief (Count 8). Before the Court is Defendant’s Rule 12(c) Motion for Judgment on the Pleadings (ECF No. 193 (the “Motion”)), Plaintiff’s response in opposition thereto (ECF No. 205 (the “Opposition”)), and Defendant’s reply in further support of its Motion (ECF No. 215). For the reasons that follow, Defendant’s Motion is granted.

II. BACKGROUND1 A. Factual Background The following allegations are taken from the Complaint, and the Court accepts, as it must, all non-conclusory allegations as true for the purposes of evaluating the Motion. 1. The Parties Mallinckrodt, a former defendant to this action, manufactures, markets, distributes, and sells Acthar. (Compl. ¶ 2.) Acthar is an adrenocorticotropic hormone, which causes the body to produce cortisone and other steroid hormones. (Id. ¶ 42.) Acthar was approved by the FDA on April 29, 1952 for over fifty conditions, but the list of approved conditions was winnowed by the FDA to the present-day nineteen indications on its label. (Id. ¶¶ 41, 89.) These nineteen indications

include: monotherapy for the treatment of infantile spasms (“IS”), treatment of acute exacerbations of Multiple Sclerosis (“MS”), adjunctive therapy for short term administration for an acute episode or exacerbation of certain Rheumatic Disorders (“RA”), treatment for exacerbation or maintenance therapy of certain collagen diseases, treatment of certain dermatologic diseases, treatment of serum sickness, treatment of symptomatic sarcoidosis, and to induce diuresis or remission of proteinuria in certain types of nephrotic syndrome. (Id. ¶ 97.) Indications beyond those listed in the drug’s labeling have not been approved by the FDA. (Id. ¶ 47.) Acthar is a “specialty pharmaceutical,”

1 The Court adopts the pagination supplied by the CM/ECF docketing system. meaning it is not sold or distributed through retail pharmacies and is only distributed through specialty pharmacy distributors and providers. (Id. ¶ 4.) In July 2001, Questcor Pharmaceuticals, Inc. (“Questcor”) acquired Acthar from Aventis Pharmaceutical Products, Inc. for $100,000. (Id. ¶¶ 3, 176.) Mallinckrodt acquired Questcor for

approximately $5.9 billion in August of 2014. (Id. ¶ 33.) In October 2020, Mallinckrodt filed for Chapter 11 bankruptcy in Delaware. In re Mallinckrodt PLC, Case No. 1:20-bk-12522 (Bankr. D. Del.); (ECF No. 84.) In June 2022, the plan of reorganization confirmed by the Bankruptcy Court became effective and discharged all claims against Mallinckrodt before the effective date, including those in this Complaint. (ECF No. 118 at 2.) On January 17, 2023, the parties to this action stipulated to dismiss Mallinckrodt from the action “with prejudice.” (Id.) UBC operates as Mallinckrodt’s “hub” of operations for the distribution and payment of Acthar for patients and third-party payors (“TPPs”) like Plaintiff. (Id. ¶¶ 8, 39.) UBC has been a wholly-owned subsidiary of Express Scripts, Inc. (“Express Scripts”), a pharmacy benefits manager (“PBM”), since 2007. (Id. ¶¶ 36, 218.) Express Scripts has also owned CuraScript, Inc.

(“CuraScript”), a specialty pharmacy distributor, and Accredo Health Group, Inc. (“Accredo”), a specialty pharmacy provider, since 2004. (Id. ¶¶ 4–5.) As a hub, UBC is responsible for controlling Acthar prescription processing, benefits coordination, and payment verification with patients and TPPs. (Id. ¶ 39.) UBC acts as Mallinckrodt’s “exclusive agent” in the processing and distribution of Acthar prescriptions through the Acthar Support and Access Program (“ASAP”). (Id. ¶¶ 16, 38.) Doctors call Acthar prescriptions into the hub, which confirms and authorizes insurance coverage. (Id. ¶ 163.) Then, the hub directs CuraScript to deliver the Acthar prescription to the patient. (Id.) Express Scripts sold UBC in November 2017 to Avista Capital Partners. (Id. ¶ 36.) Plaintiff is a TPP that provides healthcare benefits, including prescription drug benefits, to its employees through Independence Blue Cross (“IBC”). (Compl. ¶ 28.) IBC coordinates Plaintiff’s prescription drug benefits for its employees through Future Scripts, a PBM, but Plaintiff and its beneficiaries pay the full costs of the drugs. (Id.) Plaintiff paid $152,798.92 for a total of

four prescriptions of Acthar, which were prescribed to a spouse of one of its members for an unspecified rheumatic disorder. (Id. ¶¶ 18, 29–30.) The rheumatic disorder for which the beneficiary was prescribed Acthar was not one of the drug’s approved indications. (See id. ¶¶ 226, 435.) 2. The “New Strategy” In 2007, Mallinckrodt (known as Questcor at the time) and Express Scripts created a so- called “new strategy” for selling, distributing, and marketing Acthar by restricting distribution of the drug to one wholesaler, Express Scripts, to ensure prescription distribution and payment through one source, UBC. (Id. ¶¶ 131–32.) This new strategy involved “re-launch[ing]” Acthar with this limited distribution system at a higher price to make it appear as if the product were a

new drug “being launched as the only product indicated for IS,” which was an “off-label” indication until the FDA approved it in 2010.2 (Id. ¶¶ 152, 184.) Mallinckrodt and UBC would then work to market the drug for additional off-label indications to increase demand for the drug.3 (Id. ¶ 464.) As Plaintiff alleges, the scheme was comprised of three parts: distribution, pricing, and marketing.

2 As defined by the Complaint, “off-label” refers to the use of a drug for any purpose other than what is described in the drug’s labeling. (Id. ¶ 58.) 3 The Complaint discusses at length the background of certain members of the Board of Directors of Mallinckrodt (f/k/a Questcor) and their respective departures from the company or financial gains after the “new strategy” was adopted. (Id. ¶¶ 120–51.) However, since Mallinckrodt is no longer a party to this suit, these allegations do not have bearing on the merits of Plaintiff’s claims, and so the Court does not detail them herein. a) The Distribution Scheme For decades, Acthar could be distributed to any doctor, hospital, wholesaler, or specialty pharmacy who requested the drug. (Id. ¶ 130.) In July 2007, Mallinckrodt changed the way it distributed and sold Acthar by removing Acthar from multiple distributors to just one, CuraScript.

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Steamfitters Local Union No. 420, individually and on behalf of all others similarly situated v. United Biosource Corporation, now known as United Biosource LLC, a wholly owned subsidiary of United Biosource Holdings, Inc., (E.D. Pa. 2026).

Steamfitters Local Union No. 420, individually and on behalf of all others similarly situated v. United Biosource Corporation, now known as United Biosource LLC, a wholly owned subsidiary of United Biosource Holdings, Inc. (Steamfitters Local Union No. 420, individually and on behalf of all others similarly situated v. United Biosource Corporation, now known as United Biosource LLC, a wholly owned subsidiary of United Biosource Holdings, Inc.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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