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Text: Prior to 1946, the Patent Act did not authorize the awarding of attorney’s fees to the prevailing party in patent litigation. Rather, the “American Rule” governed: “ ‘[E]ach litigant pa[id] his own attorney’s fees, win or lose . . . .’ ” Marx v. General Revenue Corp., 568 U. S. ___, ___ (2013) (slip op., at 9). In 1946, Congress amended the Patent Act to add a discretionary fee-shifting provision, then codified in §70, which stated that a court “may in its discretion award reasonable attorney’s fees to the prevailing party upon the entry of judgment in any patent case.” 35 U. S. C. §70 (1946 ed.).1

Courts did not award fees under §70 as a matter of course. They viewed the award of fees not “as a penalty for failure to win a patent infringement suit,” but as appropriate “only in extraordinary circumstances.” Park-InTheatres, Inc. v. Perkins, 190 F. 2d 137, 142 (CA9 1951). The provision enabled them to address “unfairness or bad faith in the conduct of the losing party, or some other equitable consideration of similar force,” which made a case so unusual as to warrant fee-shifting. Ibid.; see also Pennsylvania Crusher Co. v. Bethlehem Steel Co., 193 F. 2d 445, 451 (CA3 1951) (listing as “adequate justification[s]” for fee awards “fraud practiced on the Patent Office or vexatious or unjustified litigation”).

Six years later, Congress amended the fee-shifting provision and recodified it as §285. Whereas §70 had specified that a district court could “in its discretion award reasonable attorney’s fees to the prevailing party,” the revised language of §285 (which remains in force today) provides that “[t]he court in exceptional cases may award reasonable attorney fees to the prevailing party.” We have observed, in interpreting the damages provision of the Patent Act, that the addition of the phrase “exceptional cases” to §285 was “for purposes of clarification only.”2 General Motors Corp. v. Devex Corp., 461 U. S. 648, 653, n. 8 (1983); see also id., at 652, n. 6. And the parties agree that the recodification did not substantively alter the meaning of the statute.3

For three decades after the enactment of §285, courts applied it—as they had applied §70—in a discretionary manner, assessing various factors to determine whether a given case was sufficiently “exceptional” to warrant a fee award. See, e.g., True Temper Corp. v. CF&I Steel Corp., 601 F. 2d 495, 508–509 (CA10 1979); Kearney & Trecker Corp. v. Giddings & Lewis, Inc., 452 F. 2d 579, 597 (CA7 1971); Siebring v. Hansen, 346 F. 2d 474, 480–481 (CA8 1965).

In 1982, Congress created the Federal Circuit and vested it with exclusive appellate jurisdiction in patent cases. 28 U. S. C. §1295. In the two decades that followed, the Federal Circuit, like the regional circuits before it, instructed district courts to consider the totality of the circumstances when making fee determinations under §285. See, e.g., Rohm & Haas Co. v. Crystal Chemical Co., 736 F. 2d 688, 691 (1984) (“Cases decided under §285 have noted that ‘the substitution of the phrase “in exceptional cases” has not done away with the discretionary feature’ ”); Yamanouchi Pharmaceutical Co., Ltd. v. Danbury Phar­ macal, Inc., 231 F. 3d 1339, 1347 (2000) (“In assessing whether a case qualifies as exceptional, the district court must look at the totality of the circumstances”).

In 2005, however, the Federal Circuit abandoned that holistic, equitable approach in favor of a more rigid and mechanical formulation. In Brooks Furniture Mfg., Inc. v. Dutailier Int’l, Inc., 393 F. 3d 1378 (2005), the court held that a case is “exceptional” under §285 only “when there has been some material inappropriate conduct related to the matter in litigation, such as willful infringement, fraud or inequitable conduct in procuring the patent, misconduct during litigation, vexatious or unjustified litigation, conduct that violates Fed. R. Civ. P. 11, or like infractions.” Id., at 1381. “Absent misconduct in conduct of the litigation or in securing the patent,” the Federal Circuit continued, fees “may be imposed against the patentee only if both (1) the litigation is brought in subjective bad faith, and (2) the litigation is objectively baseless.” Ibid. The Federal Circuit subsequently clarified that litigation is objectively baseless only if it is “so unreasonable that no reasonable litigant could believe it would succeed,” iLOR, LLC v. Google, Inc., 631 F. 3d 1372, 1378 (2011), and that litigation is brought in subjective bad faith only if the plaintiff “actually know[s]” that it is objectively baseless, id., at 1377.4

Finally, Brooks Furniture held that because “[t]here is a presumption that the assertion of infringement of a duly granted patent is made in good faith[,] . . . the underlying improper conduct and the characterization of the case as exceptional must be established by clear and convincing evidence.” 393 F. 3d, at 1382.