A pharmaceutical company holding the patent on a drug sues the manufacturer of a generic version of that drug for patent infringement. The patent-holder and the generic manufacturer later settle, with the former paying the latter not to produce a generic until the patents at issue expire. In FTC v. Actavis, Inc., 133 S. Ct. 2233 (2013), the Supreme Court recognized that such a settlement—commonly known as a “reverse payment”—where large and unjustified, can sometimes unreasonably diminish competition in violation of the antitrust laws. To answer the antitrust question, Actavis explained, “it is not normally necessary to litigate patent validity” because “the size of the unexplained reverse payment can provide a workable surrogate for a patent’s weakness.” Id. at 2236-37.
These two sets of consolidated appeals involve allegations that the companies holding the patents for Lipitor and Effexor XR delayed entry into the market of generic versions of those drugs. The companies did so, plaintiffs say, by engaging in an overarching monopolistic scheme that involved fraudulently procuring and enforcing the underlying patents and then entering into a reverse-payment settlement agreement with a generic manufacturer. With a single exception, every complaint asserts one of these monopolization claims against the patent-holders. The cases were assigned to the same district judge, who ultimately dismissed the bulk of plaintiffs’ claims.
In this opinion, we address two questions of federal jurisdiction. First, do plaintiffs’ allegations of fraudulent procurement and enforcement of the patents require us to transfer these appeals to the Court of Appeals for the Federal Circuit? That court has exclusive jurisdiction over appeals from civil actions “arising under” patent law. 28 U.S.C. § 1295(a)(1). But not all cases presenting questions of patent law necessarily arise under patent law. See Christianson v. Colt Indus. Operating Corp., 486 U.S. 800 (1986). Where, as here, patent law neither creates plaintiffs’ cause of action nor is a necessary element to any of plaintiffs’ well-pleaded claims, jurisdiction lies in this Court, not the Federal Circuit.
The second jurisdictional question we confront is confined to one of the Lipitor appeals, RP Healthcare, Inc. v. Pfizer, Inc., No. 14-4632. That case, brought by a group of California pharmacists, involves claims solely under California law and was filed in California state court. Following removal the District Court declined to remand the case to state court, citing potential patent defenses. That was error, as federal jurisdiction depends on the content of the plaintiff’s complaint, not a defendant’s possible defenses. Before final judgment, however, the remaining non-diverse defendants were voluntarily dismissed, thus raising the possibility that, notwithstanding the District Court’s failure to remand the case, it possessed diversity jurisdiction before the time it entered judgment. See Caterpillar Inc. v. Lewis, 519 U.S. 61 (1996). But because the state of the record before us is unclear with regard to the citizenship of the parties, we cannot reach the merits of this appeal until that question is resolved. We will accordingly remand the RP Healthcare appeal to the District Court so it can conduct jurisdictional discovery and address the matter in the first instance.