Although this is a patent infringement case, this appeal turns on a procedural issue regarding the issuance of a stay and the denial of a preliminary injunction. The Procter & Gamble Company (“P & G”) appeals from the trial court’s interlocutory order granting Kraft Foods Global, Inc.’s (“Kraft’s”) motion for a stay pending inter partes reexamination before the United States Patent and Trademark Office (“PTO”) of P & G’s U.S. Patent No. 7,169,418 (“the '418 patent”). In particular, P & G argues that the stay order either directly denied its motion for a preliminary injunction or had the effect of denying the motion. This case therefore presents the issue of whether we have jurisdiction to hear this interlocutory appeal, and if so, whether the district court abused its discretion with respect to Kraft’s motion to stay and/or P & G’s motion for a preliminary injunction. Because the stay order effectively denied P & G’s motion, jurisdiction is proper. Further, we hold that the district court abused its discretion by effectively denying P & G’s motion without proper consideration of the merits. Therefore, we vacate the stay and remand for consideration of the merits of P & G’s motion for a preliminary injunction.
BACKGROUND
P & G owns the Folgers brand of ground, roast coffee; Kraft owns the competing Maxwell House brand. P & G’s '418 patent is directed to a plastic container, intended to replace conventional metal cans for marketing and storing ground, roast coffee. The '418 patent issued on January 30, 2007. Kraft filed a request for inter partes reexamination of that patent on March 8, 2007. On June 7, 2007, the PTO granted Kraft’s request for reexamination but simultaneously confirmed the patentability of every claim of the '418 patent.
*845
In July 2007, Kraft introduced a plastic coffee container for the Maxwell House brand ground, roast coffee. P & G filed this action on August 8, 2007. On September 14, 2007, P & G filed a motion seeking a preliminary injunction against Kraft’s continued use of its plastic containers. Kraft, in turn, filed a motion for a stay pending its appeal to the Board of Patent Appeals and Interferences (“BPAI”) of the examiner’s decision on reexamination confirming the patentability of the claims of the '418 patent.
Procter & Gamble v. Kraft Foods Global,
No. 3:07-CV-04413,
P & G filed a notice of appeal, and Kraft filed a motion for this court to dismiss the appeal for lack of jurisdiction. Kraft argued that (1) the appeal is premature because the district court’s stay order is not a final judgment on the merits and does not expressly deny an injunction; and (2) P
&
G cannot demonstrate that it will suffer irreparable harm without an immediate appeal. A motions panel of the court denied Kraft’s motion to dismiss, reasoning that (1) the district court’s statement characterizing P & G’s preliminary injunction motion as moot might be an express denial; and (2) “an order argued to have the effect of denying a request for a preliminary injunction ‘readily satisfies’ the requirement to show irreparable harm.”
Procter & Gamble Co. v. Kraft Food Global, Inc.,
No.2008-1150, slip op. at 2 (Fed.Cir. Feb. 28, 2008) (quoting
Woodard v. Sage Products, Inc.,
DISCUSSION
When jurisdiction is proper, a district court’s decision to issue a stay is reviewed for an abuse of discretion.
See Gould v. Control Laser Corp.,
*846 I. JURISDICTION
Our jurisdiction over an interlocutory appeal such as that brought by P
&
G in this case is governed by 28 U.S.C. § 1292(a)(1) and (c)(1). Taken together, these subsections provide that this court has exclusive jurisdiction over appeals from interlocutory orders “granting, continuing, modifying, refusing or dissolving injunctions,” 28 U.S.C. § 1292(a)(1), in any case over which this court would have jurisdiction of an appeal under § 1295. 28 U.S.C. § 1292(c)(1). The Supreme Court has interpreted § 1292(a)(1) as providing a limited exception to the final judgment rule that is only available when “a litigant can show that an interlocutory order of the district court might have a ‘serious, perhaps irreparable, consequence,’ and that the order can be ‘effectually challenged’ only by immediate appeal.”
Carson v. Am. Brands, Inc.,
Under this standard, we conclude that jurisdiction is proper. The trial court explicitly refused to consider the merits of P & G’s motion for a preliminary injunction. Indeed, the judge concluded it was moot. Even if this statement is merely a refusal to consider the merits of P & G’s motion until after the stay is lifted, such a decision “cannot effectually be reviewed after the trial.”
Woodard,
Because we have jurisdiction to review the effective denial of P
&
G’s motion for a preliminary injunction, we also have jurisdiction over the trial court’s decision to stay this case pending reexamination proceedings before the PTO. When this court reviews a properly appealable interlocutory order, “other interlocutory orders, which ordinarily would be nonap-pealable standing alone, may be reviewed.”
Intermedics Infusaid, Inc. v. Regents of Univ. of Minn.,
In this case, our consideration of the denial of P & G’s preliminary injunction motion necessarily implicates the district court’s imposition of the stay. As the Ninth Circuit reasoned in Privitera v. California Board of Medical Quality Assurance,
*847 Under the unique circumstances of this case, we conclude that the portion of the order staying the action is appealable under 28 U.S.C. § 1292(a)(1). To hold otherwise would mean that the denial of the preliminary injunction would be effectively unappealable because a reversal on that issue would have no effect. Our mandate would return to a black hole. A stay should not insulate the denial of a request for preliminary injunction from appellate review in this way. For this reason, the denial of the preliminary injunction and the stay must be considered together.
II. PRELIMINARY INJUNCTION
The district court abused its discretion by effectively denying P
&
G’s motion for a preliminary injunction without considering and balancing the required factors. “A decision to grant or deny a preliminary injunction is within the sound discretion of the district court, based upon its assessment of four factors: (1) the likelihood of the patentee’s success on the merits; (2) irreparable harm if the injunction is not granted; (3) the balance of hardships between the parties; and (4) the public interest.”
Oakley, Inc. v. Sunglass Hut Int’l,
We further note that, on remand, the district court should consider the current posture of the inter partes reexamination proceedings at the PTO when evaluating P & G’s likelihood of success on the merits. To the extent that Kraft would challenge the validity of the claims of the '418 patent in the district court on the same bases it raised in the reexamination, the examiner’s confirmation of the patentability of every claim in the '418 patent may be relevant to P & G’s
*848
likelihood of success. We would, however, caution the court that the PTO does not appear to equate the “substantial new question of patentability” standard for whether reexamination should take place,
see
35 U.S.C. § 312(a)(1), with the “substantial question of validity” standard by which a defendant may prevent a patentee from demonstrating a likelihood of success on the merits,
see, e.g., E.I. du Pont de Nemours & Co. v. MacDermid Printing Sol’ns L.L.C.,
III. STAY
At the outset, P & G argues that the district court’s stay order violated 35 U.S.C. § 318. Section 318 reads:
Once an order for inter partes reexamination of a patent has been issued under section 313, the patent owner may obtain a stay of any pending litigation which involves an issue of patentability of any claims of the patent which are the subject of the inter partes reexamination order, unless the court before which such litigation is pending determines that a stay would not serve the interests of justice.
35 U.S.C. § 318 (emphasis added). P & G argues that the statute only authorizes a stay upon request of the patentee and, therefore, that the court lacked the authority to stay the case on Kraft’s (the accused infringer’s) request. The district court rejected this argument, reasoning that “[although true that § 318 does not expressly provide for an automatic stay of parallel district court proceedings, the statute in no way impacts the inherent powers of the court to control the litigation before it, and to grant a stay in the interests of justice when so required.” Stay Order at *2. We agree with the district court.
P & G’s position is flawed for two reasons. First, it ignores the state of the law as it existed at the time § 318 was enacted.
Cf. Morgan v. Principi
With regard to whether the district court properly granted the stay in this case, our conclusion necessarily follows that which we made regarding the preliminary injunction.
Cf. Privitera,
However, we note that the district court ordinarily should not grant both a preliminary injunction and a stay. A preliminary injunction should not be granted if there is a substantial issue of patent validity.
See Amazon.com v. Barnesandnoble.com, Inc.,
*850 CONCLUSION
The district court abused its discretion by imposing a stay that effectively denied P & G’s motion for a preliminary injunction without considering the merits of that motion. Accordingly, we vacate the stay and remand for a determination on the merits of whether P & G is entitled to a preliminary injunction.
VACATED AND REMANDED
COSTS
No costs.
Notes
.
Slip Track
distinguished
Privitera
on the ground that Slip Track never properly requested a preliminary injunction,
. If a preliminary injunction is denied, and a stay is granted, as the inter partes reexamination moves forward it may appear that the invalidity challenge is, in fact, insubstantial. If that occurs, the district court would then be free to lift the stay and grant a preliminary injunction, without waiting for a final conclusion of the PTO proceedings.
