340, 88 L.Ed.2d 326 (1985). When a holding of willful infringement was reversed or vacated on appeal, this court also reversed or vacated awards of attorney fees or increased damages premised on such holding. See, e.g., State Industries, Inc. v. A.O. Smith Corp., 751 F.2d 1226, 1238, 224 USPQ 418, 426 (Fed.Cir.1985);
Paper Converting Machine Co. v. Magna-Graphics Corp., 745 F.2d 11, 20, 223 USPQ 591, 597-98 (Fed.Cir.1984); Stickle v. Heublein, Inc., 716 F.2d 1550, 1564-65, 219 USPQ 377, 388 (Fed.Cir.1983).
Recently this court remanded a case to the district court for the purpose of reconsidering its denial of attorney fees and increased damages, in light of our holding on appeal that the court erred in failing to find that appellant's infringement was willful.
CPG Products Corp. v. Pegasus Luggage, Inc., 776 F.2d 1007, 1015, 227 USPQ 497, 502 (Fed.Cir.1985). See also Standard Oil Co. v. American Cyanamid Co., 774 F.2d 448, 455, 227 USPQ 293, 298 (Fed.Cir.1985).
In the case at bar, the district court offered no explanation of its conclusion that this was not an "exceptional case" despite the finding of willful infringement. The court said only that awards of attorney fees "are to be made sparingly and not as a matter of course". S. C. Johnson, 225 USPQ at 1043. The district court intertwined its ruling on whether this was an "exceptional case", in terms of 35 U.s.c. § 285, with its decision not to award attorney fees. The former is a factual finding, subject to appellate review on the clearly erroneous standard, Reactive Metals and Alloys Corp. v. ESM, Inc., 769 F.2d 1578, 1583, 226 USPQ 821, 824 (Fed.Cir.1985), and the latter is a matter of judicial discretion, as discussed infra.
The district court, at the end of a lengthy and well reasoned opinion, offered no findings, other than the compelling fact of willful infringement, on which we may base our review of the court's conclusion that this is not an exceptional case. In Reactive Metals, 769 F.2d at 1582, 226 USPQ at 824, we stated that it was incumbent on the trial court to articulate the~ basis for a finding of exceptional circumstances. See also Hughes v. Novi American, Inc., 724 F.2d 122, 124, 220 USPQ 707, 709 (Fed.Cir.1984); Stickle v. Heublein, Inc., 716 F.2d 1550, 1564-65, 219 USPQ 377, 388 (Fed.Cir.1983). It is equally necessary for the trial court to explain why this is not an exceptional case in the face of its express finding of willful infringement.
Even an exceptional case does not require in all circumstances the award of attorney fees. Many factors could affect this result. The trial judge is in the best position to weigh considerations such as the closeness of the case, the tactics of counsel, the conduct of the parties, and any other factors that may contribute to a fair allocation of the burdens of litigation as between winner and loser.
The exercise of discretion, although granting a broad scope to the trial court, is not unrestrained. The court's choice of discretionary ruling should be in furtherance of the policies of the laws that are being enforced, as informed by the court's familiarity with the matter in litigation and the interest of justice. See Yarway Corp. v. Eur-Control USA, Inc., 775 F.2d 268, 277, 227 USPQ 352, 358 (Fed.Cir.1985); see also Rohm & Hass Co., supra. We are unable to provide appellate review to the court's exercise of discretion in this matter, absent some explanation of the court's reasoning. Fed.R.Civ.Proc. 52(a).
We vacate that portion of the judgment denying attorney fees on the basis that this is not an exceptional case under 35 U.s.c. § 285, and remand to the district court for clarification.
The district court need not have found this case to be exceptional to have awarded increased damages under 35 U.S.C. § 284 based on willful infringement. The measure of damages, as indeed the assessment of attorney fees, provides an opportunity for the trial court to balance equitable concerns as it determines whether and how to recompense the successful litigant. S.C. Johnson urges that the find