                         RECOMMENDED FOR FULL-TEXT PUBLICATION
                              Pursuant to Sixth Circuit Rule 206
                                      File Name: 12a0167p.06

                 UNITED STATES COURT OF APPEALS
                                  FOR THE SIXTH CIRCUIT
                                    _________________


                                                  X
                                                   -
 ANTHONY WILLIAMS; BGR, INC.; MUNAFO,

                          Plaintiffs-Appellants, --
 INC.; AIKIDO OF CINCINNATI,

                                                   -
                                                       No. 10-3604

                                                   ,
                                                    >
                                                   -
            v.

                                                   -
                                                   -
 DUKE ENERGY INTERNATIONAL, INC.; DUKE
                                                   -
 ENERGY CORPORATION; GENERAL MOTORS
                                                   -
                         Defendants-Appellees. -
 CORPORATION,

                                                   -
                                                  N
                    Appeal from the United States District Court
                   for the Southern District of Ohio at Cincinnati.
               No. 08-00046—Edmund A. Sargus, Jr., District Judge.
                                   Argued: January 11, 2012
                               Decided and Filed: June 4, 2012
      Before: SILER and GRIFFIN, Circuit Judges; TARNOW, District Judge.*

                                      _________________

                                            COUNSEL
ARGUED: Paul Michael De Marco, WAITE, SCHNEIDER, BAYLESS & CHESLEY
CO., L.P.A., Cincinnati, Ohio, for Appellants. Joseph R. Guerra, SIDLEY AUSTIN
LLP, Washington, D.C., for Appellees. ON BRIEF: Paul Michael De Marco, Stanley
M. Chesley, W. B. Markovits, Christopher D. Stock, WAITE, SCHNEIDER, BAYLESS
& CHESLEY CO., L.P.A., Cincinnati, Ohio, Randolph H. Freking, George M. Ruel, Jr.,
FREKING & BETZ, LLC, Cincinnati, Ohio, for Appellants. James E. Burke, W. Jeffrey
Sefton, Cincinnati, Ohio, Peter D. Keisler, Eric D. McArthur, SIDLEY AUSTIN LLP,
Washington, D.C., for Appellees.




        *
        The Honorable Arthur J. Tarnow, Senior United States District Judge for the Eastern District of
Michigan, sitting by designation.


                                                  1
No. 10-3604             Williams, et al. v. Duke Energy Int’l, et al.                                   Page 2


                                          _________________

                                                 OPINION
                                          _________________

         TARNOW, District Judge. Plaintiffs appeal the dismissal of their case pursuant
to Fed. R. Civ. P. 12(b)(1). The district court, following a hearing, found that the “filed-
rate doctrine” denied the court federal question subject-matter jurisdiction. The district
court also found that the Public Utilities Commission of Ohio (“PUCO”) had exclusive
jurisdiction over Defendants’ state-law claims, depriving the court of diversity
jurisdiction. The district court granted Defendants’ motion to dismiss pursuant to
12(b)(1). The district court did not assess Defendants’ arguments that dismissal was also
proper under Fed. R. Civ. P. 12(b)(6).1

         Plaintiffs raise three issues on appeal. First, Plaintiffs argue that the PUCO does
not have exclusive jurisdiction over the state-law claims raised by Plaintiffs. Second,
Plaintiffs argue that the filed-rate doctrine does not apply to their federal claims. Third,
Plaintiffs argue that even if the district court was correct in dismissing some of Plaintiffs
claims under the filed-rate doctrine and because of PUCO’s exclusive jurisdiction, the
district court should still have considered Plaintiffs’ request for injunctive and other non-
monetary relief.

         For the following reasons, we REVERSE the judgment of the district court and
REMAND for proceedings consistent with this opinion.

                                              I. Background

         Plaintiffs Anthony Williams, BGR, Inc., Munafo, Inc., and Aikido of Cincinnati,
individuals and businesses based in Ohio, brought suit against Defendants Duke Energy
International, Inc. and Duke Energy Corporation, retail electricity service providers,
alleging violation of the Robinson-Patman Act of 1936, 15 U.S.C. § 13, et seq., Ohio’s


         1
            In a footnote the district court stated that “[a]s to Defendants motions pursuant to Rule 12(b)(6)
for failure to state a claim, the Court would find under the filed rate doctrine, Plaintiffs' claims are barred.”
Williams v. Duke Energy Int’l, Inc., 606 F. Supp. 2d 783, 794 (S.D. Ohio 2009).
No. 10-3604             Williams, et al. v. Duke Energy Int’l, et al.                     Page 3


Pattern of Corrupt Activity Act, Ohio Rev. Code § 2923.31, et seq., a civil RICO claim
pursuant to18 U.S.C. § 1962(c), and common-law claims of fraud and civil conspiracy.
Defendant Duke Energy International, Inc.2 was dissolved in May of 2005, and was a
subsidiary of Duke Energy Carolinas, LLC3 (“Duke”). Plaintiffs’ case centers on a
subsidiary of Duke Energy Carolinas, Duke Energy Ohio, Inc. (“DEO”) and an affiliated
company, Duke Energy Retail Sales4 (“DERS”).

        Plaintiffs allege that Duke,5 through subsidiaries and an affiliated company, paid
unlawful and substantial rebates to certain large customers, including General Motors,
in exchange for the withdrawal by said customers of objections to a rate-stabilization
plan that Duke was attempting to have approved by the PUCO.

        In 1999, the Ohio General Assembly enacted legislation which “restructured
Ohio's electric-utility industry to increase retail competition.” Ohio Consumers' Counsel
v. Pub. Util. Comm'n, 856 N.E.2d 213, 218 (Ohio 2006). The restructuring legislation
also provides for a transition “market development period,” not to exceed five years,
which was to end when specified numbers of customers switched suppliers of electricity.
Id. After the market-development period, the legislation removed the authority of the
PUCO to set electricity rates. See Ohio Rev. Code § 4928.05.

        On January 10, 2003, Duke Energy International’s predecessor-in-interest,
Cincinnati Gas & Electric Company (“CGE”), filed an application with the PUCO to
establish market-based pricing of electrical rates. Ohio Consumers' Counsel, 856 N.E.2d
at 219. Thereafter, the PUCO directed CGE to file a proposed rate-stabilization plan
(“RSP”). Id. at 302. A number of parties filed objections to the proposed RSP, which



        2
        Preceded by Cincinnati General & Electric (“CGE”). Ohio Consumers' Counsel v. Pub. Util.
Comm'n, 856 N.E.2d 213, 218-19 (Ohio 2006).
        3
            Known at the time of the Complaint as “Duke Energy Corporation.”
        4
            Successor in interest to Cinergy Retail Services (“CRS”).
        5
        “Duke” is used as shorthand for Duke Energy Carolinas. Duke Energy Carolinas is the parent
company of Duke Energy Ohio and Duke Energy Retail Sales, the subsidiary and affiliated company
whom Plaintiffs accuse of wrongdoing.
No. 10-3604        Williams, et al. v. Duke Energy Int’l, et al.                    Page 4


would govern the rates CGE would be permitted to charge until December 28, 2008. In
re Cincinnati Gas & Elec. Co., No. 03-93-EL-ATA, 2007 WL 3197045, at *2 (Ohio
Pub. Util. Comm’n, Oct. 24, 2007). These parties included major consumer of electricity
such as General Motors as well as the Ohio Consumers' Counsel (“OCC”), which
represents Ohio consumers in actions before the PUCO. The hearing was adjourned to
facilitate ongoing settlement negotiations. Ohio Consumers' Counsel, 856 N.E.2d at
219. Thereafter, CGE filed a stipulation regarding the outstanding rate issues. The
stipulation was agreed to by a number of parties, including General Motors, who
withdrew their objections to the RSP. Id. The OCC opposed the stipulation. Id.

       Shortly after the stipulation was filed, the OCC sought discovery from CGE to
determine whether the utility had entered into side agreements (not filed with the PUCO)
in an effort to persuade General Motors and other large consumers to withdraw their
objections to the rate-stabilization plan. Ohio Consumers' Counsel, 856 N.E.2d at 219.
The PUCO denied the request for discovery of any side agreements. Id. Both the OCC
and CGE requested a rehearing. Id. at 220. The PUCO denied the OCC’s request for
a rehearing on the issue of the side agreements, and accepted some of the alternative
aspects of the rate-stabilization plan proposed by CGE. Id. A second rehearing request
by the OCC was denied on January 19, 2005, and a third on April 13, 2005. Id. In the
second and third rehearing decisions, the PUCO approved additional modifications to
the rate-stabilization plan. Id. The OCC appealed to the Ohio Supreme Court. Id.

       The Ohio Supreme Court unanimously reversed the PUCO’s refusal to allow
discovery of the side agreements between CGE and the parties that had withdrawn their
objections to support the RSP stipulation:

       OCC argues that the existence of side agreements could be relevant to a
       determination that the stipulation was not the product of serious
       bargaining. OCC suggests that if [CGE] and one or more of the
       signatory parties agreed to a side financial arrangement or some other
       consideration to sign the stipulation, that information would be relevant
       to the commission's determination of whether all parties engaged in
       “serious bargaining.” We agree . . . . [w]hether the stipulation was the
       product of serious bargaining . . . cannot be resolved solely by reviewing
       the proposed stipulation. The commission cannot rely merely on the
No. 10-3604            Williams, et al. v. Duke Energy Int’l, et al.                              Page 5


         terms of the stipulation but, rather, must determine whether there exists
         sufficient evidence that the stipulation was the product of serious
         bargaining. Any such concessions or inducements apart from the terms
         agreed to in the stipulation might be relevant to deciding whether
         negotiations were fairly conducted . . . [t]herefore, we hold that the
         commission erred in denying discovery of this information based on lack
         of relevancy.

Ohio Consumers' Counsel, 856 N.E.2d at 234-35.

         In addition, the court found that the PUCO had failed to provide its reasoning in
allowing additional charges and fees to be included in the rate-stabilization plan after
CGE’s request for a rehearing. Id. at 223-25.

         On remand, the PUCO ordered discovery of any documents relevant to side
agreements between Duke6 and its customers7that might be relevant to evaluate the
seriousness of the bargaining. Thereafter, the PUCO conducted an evidentiary hearing
on the issue of whether the rate-stabilization plan was reasonable.

         The PUCO expressly rejected the earlier stipulation:

         Certain of the parties to the stipulation had signed side agreements that
         required them to support the stipulation . . . we have limited evidence
         . . . regarding the willingness of Duke to compromise with parties who
         may not have been discussing side arrangements . . . we find that the
         existence of side agreements, in which several of the signatory parties
         agreed to support the stipulation, raises serious doubts about the integrity
         and openness of the negotiation process related to that stipulation . . . we
         now reach the inevitable conclusion that there is a sufficient basis to
         question whether the parties engaged in serious bargaining and,
         therefore, that we should not have adopted the stipulation. We now
         expressly reject the stipulation on such grounds.
Id. at *19.


         6
           In the commission order published following remand from the Ohio Supreme Court, CGE is
referred to as “Duke.” Duke Energy International was the successor in interest to CGE, and was a
subsidiary of Duke Energy Corporation, the latter now being known as Duke Energy Carolinas, LLC.
         7
          The side agreements at issue were allegedly between CGE’s (at this point Duke’s) subsidiary
DERS and certain parties to the stipulation. The PUCO found the fact that the contracting party “may have
been an affiliate of Duke, rather than [Duke] itself” irrelevant. In re Cincinnati Gas & Elec. Co., 2007 WL
3197045, at *18-19.
No. 10-3604            Williams, et al. v. Duke Energy Int’l, et al.                              Page 6


         However, having rejected the stipulated RSP, the PUCO determined that the
Ohio Supreme Court’s concerns about particular allowed charges in the plan were
“moot” as the stipulation had been rejected. The PUCO then considered the original
RSP submitted by Duke on January 26, 2004. The PUCO approved this plan with some
modifications. Id. at *20-32.8

         The OCC again appealed to the Ohio Supreme Court, contending that the PUCO
improperly limited the consideration of the side agreements to whether serious
bargaining occurred. Ohio Consumers’ Counsel, 904 N.E.2d at 856-57. The OCC
contended that the PUCO should have considered whether Duke engaged in unlawful
discounting or discrimination in the supply of electricity. Id.

         The Ohio Supreme Court upheld the PUCO’s decision, finding that the PUCO
was not required to investigate Duke’s alleged unlawful activities in the context of
Duke’s application to approve its market-based service rate-stabilization plan:

         Pursuant to our remand, the side agreements were relevant to the
         commission's evaluation of the serious bargaining aspect of the
         reasonableness review for stipulations before the commission. Because
         the side agreements included agreements that the signatory parties would
         support the stipulation, they raised serious doubts about the integrity and
         openness of the stipulation-negotiation process . . . [b]ut in the absence
         of the stipulation, the commission was still required to consider Duke's
         rate-stabilization application and set the market-based standard service
         offer. The side agreements are not relevant to this task.

Id.

         The OCC also challenged substantive aspects of the RSP that had been approved
by the PUCO and sought the refund of alleged excessive rates. Id. at 857-58. The Ohio
Supreme Court granted the PUCO dismissal with respect to this issue, finding that a new
RSP had been implemented effective July 31, 2008. Id. The court reasoned that it could
not remand to the PUCO to enact lower rates because the rate structure at issue was no



         8
         See Ohio Consumers' Counsel, 904 N.E.2d at 861-62 (Pfeifer, J., dissenting) (noting that the plan
approved by the PUCO was largely the same plan set forth in the rejected stipulation); see, supra, p.7 n.9.
No. 10-3604             Williams, et al. v. Duke Energy Int’l, et al.                                     Page 7


longer in effect, and could not order a refund of rates because such action would
constitute “retroactive rate making.” Id.9

         Plaintiffs filed the instant suit in the United States District Court for the Southern
District of Ohio on January 16, 2008. The district court granted the Motion to Dismiss
on March 31, 2009. Plaintiffs timely filed a notice of appeal on April 29, 2010.

                                       II. Filed-Rate Doctrine

         We “review de novo the district court’s ruling on a motion to dismiss a claim.”
Jones v. City of Cincinnati, 521 F.3d 555, 559 (6th Cir. 2008).

         “The filed rate doctrine requires that common carriers and their customers adhere
to tariffs filed and approved by the appropriate regulatory agencies.” MCI Telecomms.
Corp. v. Ohio Bell Tel. Co., 376 F.3d 539, 547 (6th Cir. 2004). An example of the
doctrine is found in Louisville & Nashville R.R. Co. v. Maxwell, 237 U.S. 94 (1915), in
which the Supreme Court held that a passenger who purchased a train ticket at an
incorrectly low rate due to a misquote by a ticket agent did not have a defense against
the subsequent collection of the higher rate by the railroad company. 237 U.S. at 97.
In essence, the doctrine precludes a challenge to the reasonableness of the rates of
common carriers if the rates have been approved by an appropriate regulatory agency.

         We have described the two most important purposes of the filed-rate doctrine as
“prevent[ing] carrier discrimination by committing the carriers to one set tariff and
preserv[ing] the role of administrative agencies in approving and setting rates, a practice

         9
           Justice Pfeifer issued a dissent in which he noted that the approved RSP was nearly identical to
the rejected stipulated plan that the court had previously found to be flawed, inadequately explained, and
not the product of serious bargaining:
         [W]hen [big customers] negotiate a better deal for themselves and stipulate to higher
         prices for everyone else, this court should carefully consider the circumstances before
         approving decisions of the [PUCO]. We did just that when we initially remanded this
         case . . . [t]he problem here is that even though we rejected the stipulation and remanded
         the case, nothing has changed. The PUCO agreed to essentially the same deal that had
         been the product of the flawed stipulations. That isn't the way the process is supposed
         to play out . . . [p]ublic utilities should not be able to hide their pricing. They are, after
         all, public utilities . . . [p]roviding a lower price to a high-volume user is a legitimate
         business decision; hiding that lower price is not.
Ohio Consumers' Counsel, 904 N.E.2d at 861-62 (Pfeifer, J., dissenting).
No. 10-3604          Williams, et al. v. Duke Energy Int’l, et al.                      Page 8


at which they are particularly adept.”           MCI, 376 F.3d at 547-48 (citing Fax
Telecommunicaciones Inc. v. AT&T, 138 F.3d 479, 489 (2d Cir. 1998)).

        In MCI a telecommunications provider had applied to the PUCO for permission
to begin providing telephone services to residents of three Ohio counties. MCI had to
negotiate reciprocal compensation rates with Ohio Southern Bell, which also provided
telephone service in the area. MCI and Southern Bell submitted the dispute to the
PUCO. The PUCO determined that MCI could charge Southern Bell under the higher
“tandem” reciprocal compensation rate rather than the lower “end office” rate. On
appeal to this court, the PUCO argued that the district court lacked jurisdiction because
Southern Bell could not receive a refund for, or challenge, the rates paid to MCI under
the filed-rate doctrine. MCI, 376 F.3d 545.

        This court rejected the PUCO’s argument and reversed the district court, finding
that the filed-rate doctrine did not apply. This court noted that the first and most
important issue was that the appellant, Southern Bell, was not “arguing that the tandem
rate itself should be different (i.e., [Southern Bell] is not arguing that the rate is incorrect
or was unreasonably set) or that it is per se unreasonable.” Id. at 547. Rather, “[t]he
issue is whether [Southern Bell] is required to pay the tandem rate or the end office rate,
which may depend upon the interpretation of the regulations governing symmetrical
rates. A ruling by this court will have no effect on the filed tariff or rate. Thus, [Southern
Bell] is not challenging the filed tariff, but is merely appealing the arbitration decision
that applied one rate rather than another.” Id.

        Thus, this court distinguished between challenging the setting or reasonableness
of a specific rate, which is barred by the filed-rate doctrine, and challenges that involve
discussion of rates but do not challenge their reasonableness, which are permitted. This
court found that a determination regarding whether one rate or the other applied to MCI
would not intrude upon the fundamental purposes of the filed-rate doctrine, to prevent
carrier discrimination and to preserve the administrative role of agencies in approving
and setting rates.
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                     Page 9


        The district court erred in its determination that the Plaintiffs’ challenge involved
an attack on filed rates. The district court devoted a paragraph to this determination:

        The Plaintiffs contend that their claims involve only rebates and
        kickbacks which were neither filed with nor approved by the PUCO. The
        Court disagrees. Whether payments are rebates or kickbacks depends
        upon an analysis of the filed rate. A party claiming rate discrimination is
        contending that the effective rate charged one party is too low, while the
        charges to the plaintiffs are too high.

Williams v. Duke Energy Int’l, Inc., 606 F. Supp. 2d 783, 790 (S.D. Ohio 2009).

        The district court’s determination that the filed-rate doctrine applies to this case
is inconsistent with legal precedent. The district court held that any claim that requires
“analysis of [a] filed rate” is barred by the filed-rate doctrine. This is not a correct
statement of the filed-rate doctrine. The filed-rate doctrine bars challenges to the
reasonableness of a filed rate.

        Plaintiffs’ challenge does not concern the particular rate set by the PUCO, but
rather payments made outside of the rate scheme. Plaintiffs allege that Defendants paid
substantial sums of money to certain large customers in exchange for the withdrawal by
the large customers of their objections to Defendants’ proposed RSP. Plaintiffs contend
that this amount to an “indirect rebate” which had the effect of requiring Plaintiffs to pay
a higher rate than certain companies which received a rebate. Plaintiffs are arguing that
Defendants, in violation of the law, indirectly granted rebates to favored large customers.

        Further, as noted by the United States Court of Appeals for the First Circuit, “[i]t
is the filing of the tariffs, and not any affirmative approval or scrutiny by the agency, that
triggers the filed rate doctrine.” Town of Norwood, Mass. v. New England Power Co.,
202 F.3d 408, 419 (1st Cir. 2000) (citing Square D Co. v. Niagara Frontier Tariff
Bureau, Inc., et al., 476 U.S. 409, 417 (1986)) (emphasis in original). In Square D the
rates were “duly submitted, lawful rates under the Interstate Commerce Act . . . .”
476 U.S. at 417. That is not the case here. This case does not involve the challenge by
Plaintiffs of any filed rates. Rather, Plaintiffs challenge the lawfulness and purpose of
payments made by Appellee Duke’s affiliate DERS pursuant to various side agreements.
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                  Page 10


Plaintiffs argue that these side agreements were not filed with any agency, including the
PUCO, and are unlawful. Defendants have presented no evidence to suggest that the
side agreements were filed with any agency, and in fact have made every effort to resist
discovery of the agreements or public revelations regarding the specific contents of the
side agreements.

        Defendants argue that this is a case about “rate discrimination,” and that
Plaintiffs seeks to challenge “PUCO-approved rates.” (Br. of Appellees at 35.)
However, as noted by Plaintiffs, “the side agreements at issue and the kickbacks paid
pursuant to those agreements were not approved by, filed with, or even supervised by
the PUCO . . . .” (Reply Br. of App. at 3.) Nor do the alleged “rebates” or “kickbacks”
actually involve a challenge to the reasonableness of any filed rate. Plaintiffs do not
challenge whether the rates set by the PUCO were reasonable; rather, they contend that
Defendants conspired to aid certain favored companies in avoiding paying the actual
filed rate, and that this action on the part of Defendants harmed Plaintiffs by giving the
favored companies competitive advantage over Plaintiffs. The allegation that certain
large consumers, by receiving a rebate, effectively paid a lower rate than Plaintiffs does
not transform this action into an attack on filed rates.

        The district court’s misreading of the filed-rate doctrine is inconsistent with this
court’s decision in MCI. If the standard for application of the doctrine was any case
where “analysis of [a] filed rate” was required, then the doctrine would have barred
Southern Bell’s claim in MCI, which required this Court to examine different filed rates
to determine which was the correct filed rate to apply. Indeed, were this Court to adopt
Defendants’ view of the filed rate doctrine, the railroad appellee in Louisville &
Nashville R. Co. v. Maxwell, 237 U.S. 94 (1915), would have been unable to collect the
full price of its ticket from the ticket-holder appellant in that case, as any court seeking
to make the plaintiff pay the full price would have had to engage in “analysis of the filed
rate” to determine the rate the plaintiff should have paid. That is not the law.

        The district court incorrectly applied the filed-rate doctrine when it held that it
lacked jurisdiction to hear Plaintiffs’ claims. Because the filed-rate doctrine applies only
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                  Page 11


in challenges to the underlying reasonableness or setting of filed rates, the doctrine is
inapplicable in this case. As “[a] ruling by this court will have no effect on the filed
tariff or rate,” we follow our precedent in MCI and reverse the district court’s holding
that the filed-rate doctrine deprived it of jurisdiction over this case. MCI, 376 F.3d at
547.

                           III. Subject-Matter Jurisdiction

        We review “questions of subject-matter jurisdiction and statutory interpretation
de novo.” Baze v. Parker, 632 F.3d 338, 341 (6th Cir. 2011) (citing Mikulski v.
Centerior Energy Corp., 501 F.3d 555, 560 (6th Cir. 2007)).

        The jurisdiction of federal courts is defined by Article III of the United States
Constitution and by acts of Congress. It is generally true that the jurisdiction of the
federal courts “cannot be limited or taken away by state statutes.” 17A Wright, et al.,
Fed. Practice & Procedure § 4211 (3d ed. 2012). Generally, the jurisdiction of a federal
court will only be limited by state statute under special circumstances, such as when the
federal court sits in diversity pursuant to 28 U.S.C. § 1332. Even in such circumstances,
a state cannot defeat federal jurisdiction over a matter by limiting jurisdiction to a
specialized state court. See Marshall v. Marshall, 547 U.S. 293, 314 (2006) (holding
that “jurisdiction of the federal courts . . . ‘cannot be impaired by subsequent state
legislation creating courts of probate’”) (quoting McClellan v. Carland, 217 U.S.
268, 281 (1910)). This rule applies even if the cause of action was created by state
statute. Id. (holding that “‘a State cannot create a transitory cause of action and at the
same time destroy the right to sue . . . in any court having jurisdiction’”) (quoting
Tennessee Coal, Iron & R.R. Co. v. George, 233 U.S. 354, 360 (1914)).

        No circumstances exist here that would deprive the district court of jurisdiction
over Plaintiffs’ state-law claims. After dismissing Plaintiffs’ federal claims, the district
court found that it lacked jurisdiction over Plaintiffs’ state-law claims because, sitting
in diversity as an Ohio court, the PUCO had exclusive jurisdiction over Plaintiffs’ state-
law claims. However, because we find that the district court erred in dismissing
No. 10-3604             Williams, et al. v. Duke Energy Int’l, et al.                                 Page 12


Plaintiffs’ federal claims, federal question subject-matter jurisdiction is available to the
district court pursuant to 28 U.S.C. § 1331. The district court’s federal question subject-
matter jurisdiction is sufficient to allow supplemental jurisdiction over Plaintiffs’ state-
law tort claims of fraud and civil conspiracy pursuant to 28 U.S.C. § 1367. We therefore
need not reach the question of whether the district court sitting in diversity would have
jurisdiction over Plaintiffs’ state-law claims.

                                     IV. Claims Under 12(b)(6)

         “Whether the district court properly dismissed [a plaintiff’s] claims pursuant to
Rule 12(b)(6) is a question of law, which we review de novo.” Hensley Mfg., Inc. v.
Propride, Inc., 579 F.3d 603, 608-09 (6th Cir. 2009).

         Defendants sought dismissal for failure to state a claim pursuant to Fed. R. Civ.
P. 12(b)(6). Because the district court found that the filed-rate doctrine precluded “all
claims of damages allegedly incurred by Plaintiffs,” it did not reach or substantively
analyze Defendants’ 12(b)(6) argument.10 However, Defendants raise the 12(b)(6) issue
on appeal, and Plaintiffs address the 12(b)(6) arguments in their reply brief. This court
may address issues raised by the parties on appeal even where the district court has not
explicitly ruled on the issues. See Howard v. Bouchard, 405 F.3d 459, 476-77 (6th Cir.
2005) (taking up procedural default issue where district court did not decide issue
below).

         To survive a motion to dismiss under Fed. R. Civ. P. 12(b)(6), Plaintiffs must
plead “sufficient factual matter, accepted as true, to ‘state a claim to relief that is
plausible on its face.’” Ashcroft v. Iqbal, 556 U.S. 662, 678 (2009) (quoting Bell Atl.
Corp. v. Twombly, 550 U.S. 544, 570 (2007)). “Threadbare recitals of the elements of
a cause of action, supported by mere conclusory statements, do not suffice.” Iqbal,
556 U.S. at 678. This standard is not “akin to a ‘probability requirement,’ but it asks for
more than a sheer possibility that a defendant has acted unlawfully.” Id. (quoting


         10
             The district court stated in a footnote “[a]s to Defendants motions pursuant to Rule 12(b)(6)
for failure to state a claim, the Court would find under the filed rate doctrine, Plaintiffs claims are barred.”
Williams, 606 F. Supp. 2d at 794 n.7.
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                Page 13


Twombly, 550 U.S. at 545). Nevertheless, the complaint need not set out the facts in
detail; what is required is a “short and plain statement of the claim showing that the
pleader is entitled to relief.” Fed. R. Civ. P. 8(a). Defendants challenge each of
Plaintiffs’ claims in turn.

        A. Plaintiffs’ Robinson-Patman Act Claim

        Plaintiffs bring a claim under the Robinson-Patman Act (“RPA”), 15 U.S.C. § 13,
et seq., which makes it unlawful for persons “engaged in commerce . . . to discriminate
in price between different purchasers of commodities of like grade and quality . . . .”
The RPA was enacted in response to the comparative competitive advantage of large
purchasers, who could induce advertising allowances, rebates, and special services from
sellers due to their size. Small independent stores were at a “hopeless competitive
disadvantage” compared to large stores and thus the RPA was enacted “to eliminate
these inequities.” FTC. v. Simplicity Pattern Co., 360 U.S. 69 (1959).

        To survive a motion to dismiss on a RPA claim, a plaintiff must allege that
“(1) the defendant discriminated in price between different purchasers of commodities
of like grade and quality, and (2) the effect of that discrimination was to substantially
lessen competition or tend to create a monopoly in any line of commerce.” Schwartz v.
Sun Co., 276 F.3d 900, 903-04 (6th Cir. 2002) (citing D.E. Rogers Assocs., Inc. v
Gardner-Denver Co., 718 F.3d 1431, 1438-39 (6th Cir. 1983)).

        In their complaint, Plaintiffs allege that Defendant Duke discriminated in price
between different purchasers of its sold commodity, electricity (all of which is of like
grade and quality), and provide allegations laying out with specificity how this
discrimination took place on a continuous basis between Defendants and certain favored
commercial customers, within the same geographic market as Plaintiffs, from January
2005 to 2009. (See First Am. Compl. ¶¶ 3, 18, 21-24, 50.) Plaintiffs also allege the
specific amount of price discrimination (in the form of payments or rebates to favored
customers) in 2005: $15 million. (Id. ¶ 21.) One subclass of Plaintiffs, sellers of goods
and services, compete in the same market as the favored customers and allege that they
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                    Page 14


have lost profits as a result of the discriminatory rebates and the competitive advantage
thus provided to favored customers. (Id. ¶ 50.)

        Defendants first argue that electricity is not a “commodity” within the meaning
of the RPA, citing a single district court case, City of Newark v. Delmarva Power &
Light Co., 467 F. Supp. 763, 772-74 (D. Del. 1979) (holding that electricity is not a
commodity because the RPA uses terms such as “goods, wares, or merchandise” to refer
to commodities, terms not commonly applied to electricity, and finding significant
Congress’ amendment of Federal Power Act to allow for review of rate disparity one
year prior to passage of RPA).

        However, this court has already indicated support for the proposition that
electricity is a commodity under the RPA. In Metro Commc’ns Co. v. Ameritech Mobile
Commc’ns, Inc., 984 F.2d 739, 745 (6th Cir. 1993), this court discussed City of
Kirkwood v. Union Elec. Co., 671 F.2d 1173, 1181-82 (8th Cir. 1982), in which the
United States Court of Appeals for the Eighth Circuit held that electricity is a commodity
as it is “produced, sold, stored in small quantities, transmitted, and distributed in discrete
quantities.” This court found that cellular telephone service was not a commodity
because it is “very different from electricity. It cannot be produced, felt, or stored, even
in small quantities. The plaintiffs do not buy a quantity of it, store it, and resell it their
customers.” Metro Commc’ns Co., 984 F.3d at 745. Thus, this court by implication
found that electricity, unlike cellular telephone service, was a commodity. See also
Town of Concord, Mass. v. Bos. Edison Co., 676 F. Supp. 396, 397-98 (D. Mass. 1988)
(holding that electricity is a commodity because other than being “not an obviously
tangible item . . . electricity is not significantly different from other items deemed
commodities subject to the price discrimination prohibitions of the antitrust laws . . .
electrical energy is a thing bought and sold in the market place”); City of Gainesville v.
Fla. Power & Light Co., 488 F. Supp. 1258, 1280-83 (S. D. Fla. 1980) (holding
electricity is a commodity because it is a product manufactured from other forms of
energy, similar to commodities such as coal and gasoline, and is valued for its physical
characteristics rather than legal meaning or ability to provide a service). We reaffirm
No. 10-3604          Williams, et al. v. Duke Energy Int’l, et al.               Page 15


that electricity is a commodity under the terms of the RPA and this court’s decision in
Metro Commc’ns Co., 984 F.2d at 745.

          Defendants next argue that the RPA does not apply because Plaintiffs and the
alleged favored customers do not compete in the electricity market; Defendants contend
that the RPA “centrally addresses price discrimination in cases involving competition
between different purchasers for resale of the purchased product.” Volvo Trucks N. Am.,
Inc. v. Reeder-Simco GMC, Inc., 546 U.S. 164, 169-70 (2006).

          Defendants’ contention that the RPA applies only to the resale of a purchased
product is not consistent with case law. In FTC. v. Morton Salt Co., 334 U.S. 37, 39
(1948), the Supreme Court found that a manufacturer of salt had violated the RPA by
discriminating in price between different purchasers. The salt manufacturer had violated
the RPA because “the competitive opportunities of certain merchants were injured when
they had to pay [the salt manufacturer] substantially more for their goods than their
competitors had to pay.” Id. at 46-47. The situation is precisely the same in this case:
Plaintiffs allege that they were injured when they had to pay substantially more for
electricity than their competitors due to the rebates provided to some of Defendants’
large customers.

          Defendants next argue that Plaintiffs fail to adequately allege competitive
disadvantage and damage to their business or property. Specifically, Defendants claim
that Plaintiffs provide only “unadorned, conclusory allegations. . . .” (Br. of Appellees
at 47.)

          The Supreme Court has held that “the [RPA] does not require that the
discriminations must in fact have harmed competition, but only that there is a reasonable
possibility that they ‘may’ have such an effect.” Corn Prods. Refining Co. v. FTC.,
324 U.S. 726, 742 (1945). This court endorsed the same view in Schwartz v. Sun Co.,
Inc., finding that “[b]ecause damage issues in [RPA] cases are rarely susceptible to the
kind of concrete, detailed proof of injury which is available in other contexts, the
Supreme Court has repeatedly held that . . . the factfinder may conclude as a matter of
just and reasonable inference from the proof of defendants’ wrongful acts and their
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                   Page 16


tendency to injure plaintiffs’ business . . . that defendants’ wrongful acts had caused
damage to plaintiffs.” Schwartz, 276 F.3d at 904 (quoting Stelwagon Mfg. Co. v. Tarmac
Roofing Sys., 63 F.3d 1267, 1273-74 (3d Cir. 1995) (internal citations omitted)).
Plaintiffs Munafo and BGR, Inc. allege that they have suffered competitive disadvantage
compared to certain favored companies as a result of the alleged rebates provided to said
companies. (First Am. Compl. ¶ 50.)

        Defendants also argue that Plaintiffs do not allege the identity of the “favored”
or “disfavored” purchasers, or the effect of the cost of electricity on their sales or profit
margins. However, the primary reason that the side agreements and sales to the
“favored” purchasers have not been set forth in detail is because discovery has not taken
place and this information rests in the hand of the Defendants. Plaintiffs note that the
copy of the side agreements they obtained is heavily redacted such that the names of
favored companies are not available. Nevertheless, Plaintiffs have identified General
Motors as one of the favored companies in their pleadings. (First Am. Compl. at ¶¶ 15,
21.)

        We find that Plaintiffs have adequately alleged injury and competitive
disadvantage sufficient to survive a 12(b)(6) motion to dismiss with respect to their
Robinson-Patman Act claim.

        B. Plaintiffs’ RICO Claim

        Plaintiffs bring a civil RICO claim pursuant to 18 U.S.C. § 1962(c), making it
“unlawful for any person employed by or associated with any enterprise engaged in, or
the activities of which effect, interstate or foreign commerce, to conduct or participate,
directly or indirectly, in the conduct of such enterprise’s affairs through a pattern of
racketeering activity . . . .” Plaintiffs allege that Defendant Duke, through its affiliated
company DERS, transmitted unlawful rebates to certain favored companies. (First Am.
Compl. at ¶¶ 15-21.) Plaintiffs allege that the racketeering activity is primarily mail and
wire fraud, but also includes money laundering. (Id. ¶¶ 33-40.) Plaintiffs allege that the
pattern of repeated acts of mail and wire fraud from 2005 to the present demonstrates a
relationship between the predicate acts and continuous criminal activity. (Id. ¶¶ 35-39;)
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                   Page 17


See H.J. Inc. v. Nw. Bell Tel. Co., 492 U.S. 229, 239 (1989) (holding that in a civil or
criminal RICO action, it must be shown that “racketeering predicates are related, and
that they amount to or pose a threat of continued criminal activity”).

        Defendants argue that Plaintiffs do not adequately allege mail or wire fraud as
a predicate to racketeering. Defendants argue that bills sent to customers in the mail that
stated that “certain electricity charges were mandatory and unavoidable” were “as a
matter of indisputable state law . . . true: The various charges Plaintiffs identify must be
paid, and Plaintiffs do not allege that any ‘favored’ customers were excused from this
obligation.” (Br. of Appellee at 49.)

        Plaintiffs respond by noting that, while the fact that the electricity charges at
issue had to paid was true, Defendants used these true statements to conceal the alleged
fraud. By engaging in secret side agreements with favored customers, Defendants
provided rebates to already-paid “mandatory” charges. Plaintiffs also allege that
Defendants engaged in wire fraud by receiving and transferring moneys to and from
DERS and favored customers in furtherance of a fraudulent scheme. (First Am. Compl.
¶¶ 33-40.)

        Defendants argue that Duke had no “duty to disclose” the rebates at issue. (Br.
of Appellee at 50.) Defendants cite Langford v. Rite Aid of Alabama, Inc., 231 F.3d
1308, 1314 (11th Cir. 2000), for the proposition that “differential pricing alone is not a
fraudulent practice; plaintiffs must assert some particular reason why the relationship . . .
was such that non-disclosure of the differential pricing structure constitutes a violation
of the mail and wire fraud statutes.” As Plaintiffs have pled, Duke’s fraud was in
asserting through the mail that all customers had to pay “mandatory and unavoidable”
electricity charges, implying that all customers paid the same rate (which they were
required to do under the RPA). Thus, Plaintiffs allege that Duke’s non-disclosure of the
side agreements constitutes fraud.

        Defendants also cite McEvoy Travel Bureau, Inc. v. Heritage Travel, Inc.,
904 F.2d 786, 792 (1st Cir. 1990), for the proposition that an “illegal rebate and kickback
scheme . . . did not amount to a scheme to defraud.” Defendants omit the reason why,
No. 10-3604         Williams, et al. v. Duke Energy Int’l, et al.                  Page 18


in McEvoy, the illegal scheme was not “a scheme to defraud”: the United States Court
of Appeals for the First Circuit found that the scheme was not intended to defraud the
plaintiff who had brought the RICO action. McEvoy does not stand for the proposition
that Defendants claim, that an “illegal rebate and kickback scheme” can never amount
to a scheme to defraud.

         Defendants also make brief claims that Plaintiffs fail to plead with particularity
as required by Fed. R. Civ. P. 9(b), and that Plaintiffs fail to state a predicate claim for
money laundering because money laundering requires money that is the proceed of
“some form of unlawful activity.” 18 U.S.C. § 1956(a)(1). Defendants argue that the
payment of “PUCO-approved rates” to Duke was not unlawful.

         With respect to Defendants’ 9(b) argument, this court has held that “[i]t is a
principle of basic fairness that a plaintiff should have an opportunity to flesh out her
claim through evidence unturned in discovery. Rule 9(b) does not require omniscience;
rather the Rule requires that the circumstances of the fraud be pled with enough
specificity to put defendants on notice as to the nature of the claim.” Michaels Bldg. Co.
v. Ameritrust Co., N.A., 848 F.2d 674, 680 (6th Cir. 1988). “Especially in a case in
which there has been no discovery, courts have been reluctant to dismiss the action
where the facts underlying the claims are within the defendant’s control.” Id. We find
that Plaintiffs have sufficiently set out the alleged fraudulent scheme in such a manner
as to put Appellee on notice of the nature of Plaintiffs’ claims.

         With respect to Defendants’ money-laundering argument, the alleged transfer of
money from favored customers to Duke, and from Duke to DERS, and from DERS back
to the favored customers as “rebates” tainted the funds, which became the “proceeds”
of unlawful activities. Mail fraud constitutes an “unlawful activity” according to 18
U.S.C. §§ 1956(c)(7)(A) and 1961(1). Thus, taking as true the allegations that Appellee
Duke collected money through its use of the mails and funneled the money to DERS and
thereafter back to favored customers in a fraudulent scheme, we find that Plaintiffs have
set out a cognizable claim of money laundering based upon the unlawful activity of mail
fraud.
No. 10-3604        Williams, et al. v. Duke Energy Int’l, et al.                  Page 19


       Defendants next argue that there is no proximate cause between the alleged
racketeering and harm to Plaintiffs. Defendants argue that Plaintiffs’ “theory of liability
rests on the independent actions of third . . . parties,” namely the PUCO, and argue that
the remedy sought by Plaintiffs would require the PUCO to enforce the law. We do not
agree. Defendants’ argument confuses proximate cause between an alleged wrongful act
and an injury with the relationship between an alleged wrongful act and the remedy for
injury. The PUCO was not the cause of injury to Plaintiffs. Rather, it was Defendants’
alleged fraudulent scheme that Plaintiffs contend caused them injury. The fact that
Plaintiffs are required to bring a case before the PUCO or this court does not mean that
there is a “third party” whose actions disrupt the proximate cause of Plaintiffs’ injuries.
Defendants’ argument that proximate causation is “speculative” because the PUCO
might not have found the rebates to be unlawful is similarly incorrect.

       We find that Plaintiffs’ alleged injuries, as set forth in the First Amended
Complaint, are fairly traceable to Defendants, and that Plaintiffs’ Civil RICO claim
survives a motion to dismiss under 12(b)(6).

       C. Plaintiffs’ Corrupt-Practices Claim

       Defendants argue that Plaintiffs fail to allege predicates for their Ohio Corrupt-
Practices Act claim, Ohio Rev. Code § 2923.3. As we have already held, Plaintiffs have
properly alleged money laundering and telecommunications fraud as a predicate to their
civil RICO claim. This alone would be enough to satisfy the predicate act requirements
of the Ohio Corrupt-Practices Act.

       Plaintiffs have also sufficiently alleged that Defendants engaged in obstruction
of justice, that is, “communicating false information to any person” for the purpose of
hindering discovery of a crime pursuant to Ohio Rev. Code § 2921.32(A). Plaintiffs
allege that Defendants’ legal counsel “consciously and deceptively denied having any
knowledge of the existence of any . . . side deals” in on-the-record proceedings before
the Ohio Supreme Court in “a further attempt to hide their wrongdoing.” (First Am.
Compl. ¶¶ 20, 39.) The selective payment of rebates constitutes a felony under Ohio
law. See Ohio Rev. Code §§ 4905.32-.33(A), 4905.56, 4905.99. Thus, communicating
No. 10-3604        Williams, et al. v. Duke Energy Int’l, et al.                 Page 20


false information to any person for the purpose of hindering the discovery of the
selective payment of rebates would constitute obstruction of justice.

       Defendants argue that the “alleged acts occurred in civil proceedings, and
plaintiffs’ allegations show at most that they were designed to assist [Duke], and not
‘another’ as the statute requires.” (Br. of Appellees p. 55.) Defendants’ arguments are
inconsistent with the law. The fact that the alleged obstruction took place in a civil
proceeding is irrelevant; the statute contains no requirement that a false statement be
made in a criminal proceeding. See Ohio Rev. Code § 2921.32(A). Similarly,
Defendants’ contention that the alleged obstruction was in defense of the corporation
does not shield Defendants’ counsel from the statute. Even were corporations not
considered “persons” for many legal purposes, see Citizens United v. FEC, 130 S. Ct.
876 (2010), corporate counsel are not permitted to freely make false statements before
a court and evade charges of obstruction of justice.

       We find that Plaintiffs have adequately alleged violation of Ohio’s Corrupt-
Practices Act sufficient to withstand a motion to dismiss under Fed. R. Civ. P. 12(b)(6).

       D. Plaintiffs’ Common-Law Fraud Claim

       Defendants next challenge Plaintiffs’ claim of common-law fraud by recycling
their arguments regarding a lack of duty to disclose and a lack of proximate cause
between their actions and the injury to Defendants. As we have already held, Plaintiffs
have sufficiently argued that Defendants are not free to omit material facts in the
commission of mail and wire fraud and have alleged proximate cause between the
actions of Defendants and the injury to Plaintiffs.

       We therefore find that Plaintiffs have adequately alleged a claim of common-law
fraud sufficient to withstand a motion to dismiss under Fed. R. Civ. P. 12(b)(6)

       E. Plaintiffs’ Common-Law Civil Conspiracy Claim

       Plaintiffs base their common-law civil conspiracy claim on Defendants’ alleged
conspiracy to violate Ohio Rev. Code § 4905.33(A), which prohibits a public utility from
No. 10-3604           Williams, et al. v. Duke Energy Int’l, et al.                         Page 21


charging any person or corporation more or less for services, through the use of rebates,
than any other person or corporation, and § 4905.35, which prohibits a public utility
from giving undue or unreasonable preference, advantage, or disadvantage to any person
or corporation.

        Defendants argue that Plaintiffs’ conspiracy claim fails because, according to
Defendants, they are no longer subject to the statutory restrictions prohibiting rebates or
special rates in Ohio Rev. Code § 4905.33(A), or the restrictions prohibiting giving
undue advantage or disadvantage in § 4905.35. Defendants make this argument based
on Ohio Rev. Code § 4928.05(A)(1), enacted in 1999, which states in pertinent part that:

        On and after the starting date of competitive retail electric service, a
        competitive retail electric service supplied by an electric utility or electric
        services company shall not be subject to supervision and regulation . . .
        by the public utilities commission under Chapters 4901. to 4909., 4933.,
        4935., and 4963. of the Revised Code, except sections 4905.10 and
        4905.31, division (B) of section 4905.33, and sections 4905.35 and
        4933.81 to 4933.90; except sections 4905.06, 4935.03, 4963.40, and
        4963.41 of the Revised Code . . . .

        Defendants argue that, by stating that electric services companies “shall not be
subject to supervision and regulation . . . by the public utilities commission . . .” the Ohio
General Assembly intended to entirely remove electric service companies from the reach
of the listed sections of the Ohio Code.11 Defendants argue that it is implausible that
“competitive retail electric service remains subject to all of the requirements governing
public utilities, that Chapter 4928 supplements rather than replaces those requirements,
and that enforcement power has been transferred from the PUCO to private plaintiffs.”
(Br. of Appellees at 57.) Defendants contend that the exempted provisions of § 4298.05
“no longer apply to competitive retail electric service.” (Id.)

        Defendants misread the plain language of § 4298.05. Had the Ohio legislature
intended to remove competitive electric services completely from the ambit of the

        11
           This argument is at odds with Defendants’ argument that the PUCO retains “authority” to
“remedy the underlying wrongs” caused by violation of 4905.33 and 4905.35; it is unclear how the PUCO
could remedy harm caused by Defendants under said statutes if Defendants are no longer subject to the
very same statutes, as Defendants argue in a separate portion of their brief.
No. 10-3604        Williams, et al. v. Duke Energy Int’l, et al.                     Page 22


statutes listed in § 4298.05, then the words “by a municipal corporation under Chapter
743, of the Revised Code or by the public utilities commission” are superfluous to the
statute. Under Ohio law, “[i]n determining legislative intent it is the duty of [the] court
to give effect to the words used, not to delete words used or to insert words not used.”
Columbus-Suburban Coach Lines, Inc. v. Public Util. Comm’n of Ohio, 254 N.E.2d 8,
9 (Ohio 1969). The inclusion of “by the public utilities commission” means that the
statute should be read exactly as written: competitive electric services are exempted from
the authority of the PUCO under the specific chapters listed. Had the Ohio legislature
meant to remove competitive electric services entirely from the reach of the statute, they
could have done so with specific language.

       Defendants’ argument would require this court to ignore the plain language of
the statute and inquire into the intent of the legislators of the General Assembly in
enacting § 4298.05. Such an inquiry is unnecessary given the plain language of the
statute. We find that Ohio Rev. Code §§ 4905.33 and 4905.35 apply to Defendant Duke,
and that Plaintiffs have alleged a claim of common-law civil conspiracy sufficient to
survive a motion to dismiss under Fed. R. Civ. P. 12(b)(6).

                                  V. Injunctive Relief

       Plaintiffs argue that if this court finds that the filed-rate doctrine applied to their
federal claims, we could nevertheless provide them with injunctive and non-damage
relief. Because we find that the filed-rate doctrine does not apply, we need not decide
this question.

                                     VI. Conclusion

       For the foregoing reasons, we REVERSE the judgment of the district court and
REMAND for proceedings consistent with this opinion.
