Highway Equipment Company, Inc. v. Feco, Ltd ( 2006 )


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    United States Court of Appeals for the Federal Circuit
    05-1547, -1578
    HIGHWAY EQUIPMENT COMPANY, INC.,
    Plaintiff-Cross Appellant,
    v.
    FECO, LTD. and STAN DUNCALF,
    Defendants-Appellants.
    Stephen J. Holtman, Simmons, Perrine, Albright & Ellwood, PLC, of Cedar
    Rapids, Iowa, argued for plaintiff-cross appellant. With him on the brief was David A.
    Hacker.
    David A. Tank, Davis, Brown, Koehn, Shors & Roberts, P.C., of Des Moines,
    Iowa, argued for defendants-appellants. With him on the brief was Deborah M.
    Tharnish.
    W. Michael Garner, Dady & Garner, P.A., of Minneapolis, Minnesota, for amici
    curiae.
    Appealed from: United States District Court for the Northern District of Iowa
    Magistrate Judge John A. Jarvey
    United States Court of Appeals for the Federal Circuit
    05-1547, 1578
    HIGHWAY EQUIPMENT COMPANY, INC.
    Plaintiff-Cross Appellant,
    v.
    FECO, LTD. and STAN DUNCALF,
    Defendants-Appellants.
    __________________________
    DECIDED: November 21, 2006
    __________________________
    Before SCHALL, LINN, and DYK Circuit Judges.
    LINN, Circuit Judge.
    FECO, Ltd. (“FECO”) appeals from a judgment of the U.S. District Court for the
    Northern District of Iowa making final an order granting Highway Equipment Company,
    Inc.’s (“Highway Equipment”) summary judgment on FECO’s claim for wrongful
    termination of dealership and denying FECO’s motion for attorney fees and expenses
    pursuant to 
    35 U.S.C. § 285
    . Highway Equipment cross-appeals from the ruling that the
    district court had subject matter jurisdiction over FECO’s motion for attorney fees.
    Because the district court properly entertained FECO’s claim for attorney fees and did
    not err in denying attorney fees, and because the district court lacked jurisdiction over
    FECO’s wrongful termination of dealership claim, we affirm-in-part, vacate-in-part, and
    remand.
    I. BACKGROUND
    FECO and Highway Equipment are Iowa corporations that manufacture and sell
    agricultural equipment including spreaders for applying particulate material, such as
    fertilizer to fields or salt to roads. Highway Equipment is also the owner of 
    U.S. Patent No. 6,517,281
     (the ’281 patent), directed to an adjustable spreader that allows for a
    more precise application of the various types and densities of particulate material.
    On October 1, 1996, Highway Equipment entered into an agreement with FECO,
    authorizing FECO to sell Highway Equipment’s adjustable spreader. The agreement
    was governed by the Iowa Agricultural Equipment Dealer Statute, Iowa Code § 322F
    (“322F”), which regulates certain aspects of contractual relationships between
    agricultural equipment suppliers and dealers. 322F provides, among other things, that a
    supplier shall terminate a dealership agreement only upon good cause and with at least
    ninety-days prior written notice.   On September 16, 2002, without good cause and
    without prior written notice, Highway Equipment terminated FECO as its agricultural
    equipment dealer.
    In December of 2002, or sometime shortly thereafter, FECO began
    manufacturing an adjustable spreader. The ’281 patent issued on February 11, 2003.
    On June 17, 2003, Highway Equipment sued FECO and its president, Stan Duncalf
    (collectively “FECO”) for infringement of the ’281 patent. Also named as a defendant in
    that case was Doyle Equipment Manufacturing Company (“Doyle”).                   Highway
    Equipment averred in its complaint that the district court possessed subject matter
    jurisdiction over the counts alleging infringement pursuant to 
    28 U.S.C. § 1338
    (a).
    05-1547, 1578                               2
    FECO filed affirmative defenses, based on inventorship and inequitable conduct,
    and counterclaimed for a declaratory judgment of non-infringement and invalidity and for
    tortious interference with a prospective business relationship.     FECO also sought
    damages pursuant to 322F for wrongful termination of its dealership agreement with
    Highway Equipment. FECO asserted that the district court possessed supplemental
    jurisdiction over the counterclaim, alleging violation of the Iowa Code pursuant to 
    28 U.S.C. § 1367
    (a). FECO also sought attorney fees and costs.
    On November 1, 2004, Highway Equipment moved for partial summary judgment
    on FECO’s counterclaim for damages pursuant to 322F.          On March 22, 2005, the
    district court, by an interlocutory order, granted Highway Equipment’s summary
    judgment motion. The district court held that, as a matter of law, FECO was not entitled
    to damages for wrongful termination of dealership under the statute because the statute
    expressly lists certain acts that are “violations” of 322F and wrongful termination of
    dealership is not enumerated on the list. See Highway Equipment Co. v. FECO, Ltd.,
    No. 03-CV-0076 (N.D. Iowa Mar. 22, 2005) (“322F Order”); see also Iowa Code §
    322F.7. Trial on the remaining patent-related issues was scheduled to begin in April,
    with the final pretrial conference set for April 1, 2005.
    On March 31, 2005, Highway Equipment filed a stipulation and motion for
    dismissal with prejudice of all of its claims against Doyle. Doyle likewise stipulated to
    dismiss with prejudice all claims against Highway Equipment. The next day, on April 1,
    2005, Highway Equipment filed the following “Declaration and Covenant Not to Sue”
    (“covenant”):
    Highway Equipment Company, on behalf of itself and
    any successors-in-interest to [the ’281 patent], hereby
    05-1547, 1578                                 3
    unconditionally and irrevocably covenants not to assert at
    any time any claim of patent infringement including direct
    infringement, contributory infringement and/or inducing
    infringement against [FECO] under the ’281 patent, as it
    currently reads, based on [FECO’s] manufacture, use, offer
    for sale, or sale of
    (1) any product that [FECO] currently manufactures;
    and/or
    (2) any product that [FECO] manufactured prior to the
    date of this declaration.
    By order dated that same day, the district court entered a dismissal with
    prejudice as to the claims between Highway Equipment and Doyle, based on the
    stipulations between them. Because the covenant withdrew the controversy regarding
    infringement, on April 4, 2005, the district court canceled the jury trial and set April 5,
    2005 as the deadline for FECO to file a motion for attorney fees under 
    35 U.S.C. § 285
    .
    On April 7, 2005, FECO filed its motion for attorney fees pursuant to 
    35 U.S.C. § 285
     and requested a hearing. FECO alleged the case was exceptional under 
    35 U.S.C. § 285
     because Highway Equipment engaged in litigation misconduct and
    inequitable conduct during prosecution of the ’281 patent. On April 12, 2005, Highway
    Equipment filed an opposition to the motion, contending that the court could not properly
    entertain the attorney fee issue because Highway Equipment’s covenant not to sue
    FECO for infringement divested the court of subject matter jurisdiction over the claim for
    attorney’s fees and that, in the alternative, FECO did not obtain a disposition on the
    merits that would make it a prevailing party for purposes of 
    35 U.S.C. § 285
    .
    On April 18, 2005, pursuant to Fed. R. Civ. P. 41(a)(2), FECO sought an order
    dismissing Highway Equipment’s underlying infringement claim with prejudice and
    retaining jurisdiction to entertain the fee request.      On April 20, 2005, Highway
    Equipment filed a brief “resisting” the motion, arguing that, although the covenant
    05-1547, 1578                               4
    rendered all matters moot such that the court should dismiss all claims, including the fee
    claim, a dismissal with prejudice was not warranted. On April 21, 2005, FECO filed a
    reply, arguing that a dismissal with prejudice was required under the facts of this case
    because, among other things, the filing of the covenant is a “unilateral declaration of
    intent not supported by consideration, which [Highway Equipment] can attempt to
    withdraw, amend, or alter at any time.”      FECO’s April 21, 2005 brief reiterated its
    demand for dismissal of the patent claims with prejudice, arguing that “[a]bsent a
    definitive and judicially sanctioned resolution of [Highway Equipment’s] affirmative
    claims [demanding among other things damages for past infringement], the threat of
    further litigation is substantial.”
    On April 22, 2005, the district court ruled that, although it was dismissing the
    entire action under Fed. R. Civ. P. 41(a)(2) in light of the filing of the covenant, it
    nonetheless retained subject matter jurisdiction over FECO’s fee request under 
    35 U.S.C. § 285
    . See Highway Equipment Co. v. FECO, Ltd., No. 03-CV-0076 (N.D. Iowa,
    April 22, 2005) (“Jurisdiction Order”).    The court also found that it could properly
    entertain the fee claim because it concluded that FECO was a prevailing party for
    purposes of § 285. The court then set a hearing date on FECO’s fee motion. Id., slip
    op. at 9.
    On July 27, 2005, after a four-day evidentiary hearing on the fee question, the
    court found that the case was not exceptional and denied FECO’s request for attorney
    fees. See Highway Equipment Co. v. FECO, Ltd., No. 03-CV-0076 (N.D. Iowa Jul. 27,
    2005) (“Fee Order”).       On July 29, 2005, the district court entered final judgment,
    dismissing Highway Equipment’s claims against FECO and FECO’s counterclaims
    05-1547, 1578                                5
    against Highway Equipment with prejudice based on the covenant and denying FECO’s
    claim for attorney fees and costs under 
    35 U.S.C. § 285
    . See Highway Equipment Co.
    v. FECO, Ltd., No. 03-CV-0076 (N.D. Iowa Jul. 29, 2005) (“Final Order”).
    FECO appeals the district court’s Fee Order and the district court’s 322F Order.
    Highway Equipment cross-appeals the district court’s Jurisdiction Order.         We have
    jurisdiction pursuant to 
    28 U.S.C. § 1295
    (a)(1).
    II. DISCUSSION
    A. Standard of Review
    Whether an actual controversy exists to support subject matter jurisdiction is a
    question of law subject to de novo review. Fort James Corp. v. Solo Cup Co., 
    412 F.3d 1340
    , 1346 (Fed. Cir. 2005) (citing BP Chems. Ltd. v. Union Carbide Corp., 
    4 F.3d 975
    ,
    978 (Fed. Cir. 1993)). The district court’s factual determinations made in the process of
    resolving questions of law are reviewed for clear error. See Vanguard Research, Inc. v.
    Peat, Inc., 
    304 F.3d 1249
    , 1254 (Fed. Cir. 2002). In considering the jurisdictional issues
    presented herein, we follow the “fundamental precept that federal courts are courts of
    limited jurisdiction,” empowered to act only within the bounds of Article III of the United
    States Constitution.    Owen Equip. & Erection Co. v. Kroger, 
    437 U.S. 365
     (1978);
    Marbury v. Madison, 5 U.S. (1 Cranch) 137, 173-80 (1803); see also Mansfield,
    Coldwater & Lake Mich. Ry. v. Swan, 
    111 U.S. 379
    , 384 (1884) (“[T]he judicial power of
    the United States must not be exerted in a case to which it does not extend, even if both
    parties desire to have it exerted”).
    Before considering the effect of the district court’s dismissal with prejudice, we
    must first determine whether to apply Eighth Circuit law or Federal Circuit law to the
    05-1547, 1578                                6
    question of what effect a dismissal with prejudice has on the legal requirements under
    
    35 U.S.C. § 285
    .     Keeping in mind the policy interests both in “bring[ing] about
    uniformity in the area of patent law” and in “minimizing confusion and conflicts in the
    federal judicial system,” Manildra Milling Corp. v. Ogilvie Mills, Inc., 
    76 F.3d 1178
    , 1181
    (Fed. Cir. 1996) (citations omitted), and that Federal Circuit law “governs the
    substantive interpretation of 
    35 U.S.C. § 285
    , which is unique to patent law,” Pharmacia
    & Upjohn Co. v. Mylan Pharms., Inc., 
    182 F.3d 1256
    , 1359 (Fed. Cir. 1999), we resolve
    the issue by deciding that the question of the effect of a dismissal with prejudice on 
    35 U.S.C. § 285
     is a matter of Federal Circuit law. We do so in order to promote national
    uniformity concerning the availability of attorney fees under 
    35 U.S.C. § 285
    . Were we
    to apply regional circuit law, the effect of a dismissal with prejudice on 
    35 U.S.C. § 285
    might vary with the regional circuit in which the case originated. As discussed below,
    there is a noted lack of uniformity among the regional circuits regarding the effect of a
    dismissal with prejudice on the availability for attorney fees. Applying our own law will
    ensure uniformity when patent issues are litigated. We apply a de novo standard of
    review to this question of law. Inland Steel Co. v. LTV Steel Co., 
    364 F.3d 1318
    , 1320
    (Fed. Cir. 2004).
    Where a district court finds a case exceptional under 
    35 U.S.C. § 285
    , this court
    reviews the underlying factual findings for clear error and legal conclusions without
    deference. Rambus Inc. v. Infineon Techs. AG, 
    318 F.3d 1081
    , 1088 (Fed. Cir. 2003).
    Once the district court has found a case to be exceptional, we review any award of
    attorney fees for an abuse of discretion. Id.
    05-1547, 1578                               7
    B. Analysis
    1. Fee Order
    Highway Equipment first argues that the district court erred in retaining
    jurisdiction over FECO’s request for attorney fees under 
    35 U.S.C. § 285
     because, once
    Highway Equipment gave FECO a pre-verdict covenant not to sue on the patent
    infringement issues, the court lost Article III subject matter jurisdiction over the patent-
    based fee request. We disagree. Under our precedent, the district court correctly
    retained jurisdiction over FECO’s claim for attorney fees under 
    35 U.S.C. § 285.1
     See
    H.R. Tech., Inc. v. Astechnologies, Inc., 
    275 F.3d 1378
    , 1386 (Fed. Cir. 2002) (holding
    that a claim for attorney fees under § 285 is independently within the district court’s
    federal question jurisdiction); Imagineering, Inc. v. Van Klassens, Inc., 
    53 F.3d 1260
    ,
    1263 (Fed. Cir. 1995) (“Since section 285 appears in title 35 and was enacted as a part
    of United States patent law, the question whether a case is exceptional within the
    meaning of section 285 arises under the Patent Act.”); Cambridge Prods., Ltd. v. Penn
    Nutrients, Inc., 
    962 F.2d 1048
    , 1050-51 (Fed. Cir. 1992).
    Highway Equipment also argues that, in the alternative, even if the district court
    had subject matter jurisdiction, the district court erred in entertaining FECO’s request for
    attorney fees under 
    35 U.S.C. § 285
     because FECO did not receive judicial relief on the
    1
    While the covenant may have eliminated the case or controversy pled in
    the patent-related counterclaims and deprived the district court of Article III jurisdiction
    with respect to those counterclaims, see Super Sack Mfg. Corp. v. Chase Packaging
    Corp., 
    57 F.3d 1054
    , 1058-59 (Fed. Cir. 1995) (“[A] patentee defending against an
    action for a declaratory judgment of invalidity can divest the trial court of jurisdiction over
    the case by filing a covenant not to assert the patent at issue against the putative
    infringer.”), the covenant does not deprive the district court of jurisdiction to determine
    the disposition of the patent infringement claims raised in the Complaint under Rule 41
    or the request for attorney fees under 
    35 U.S.C. § 285
    .
    05-1547, 1578                                 8
    merits that alters the legal relationship of the parties. Highway Equipment argues that
    its strategic decision to file the covenant and not to assert its infringement claim reveals
    nothing about the merits of Highway Equipment’s case. It contends that because the
    covenant cannot be construed as anything other than an abandonment of the litigation,
    the dismissal, even though characterized as “with prejudice,” did not and could not
    change the legal relationship between the parties on the merits of the underlying claim,
    which was not considered by the district court. We disagree.
    
    35 U.S.C. § 285
     provides that “[t]he court in exceptional cases may award
    reasonable attorney fees to the prevailing party.” The Supreme Court has considered
    several similarly-worded fee shifting statutes and has consistently held that such
    statutes prohibit an award of fees to the plaintiff unless the court awards relief on the
    merits, either through a judgment on the merits or through a settlement agreement
    enforced through a consent decree. See Buckhannon Bd. and Care Home, Inc. v. W.
    Va. Dep’t of Health and Human Res., 
    532 U.S. 598
     (2001) (addressing a request for
    attorney fees under the Fair Housing Amendments Act and the Americans with
    Disabilities Act); see also Kentucky v. Graham, 
    473 U.S. 159
     (1985) (addressing a
    request for attorney fees under the Civil Rights Attorney’s Fees Awards Act of 1976). In
    Buckhannon, the Supreme Court rejected the so-called “catalyst theory,” which
    maintained that a plaintiff obtained relief on the merits if the plaintiff achieved its desired
    result due to the defendant’s voluntary change in conduct. Buckhannon, 
    532 U.S. at 600
    . In rejecting this theory, the Court explained that the critical focus is not on the
    defendant’s voluntary change in conduct, but rather whether there is a “judicially
    sanctioned change in the legal relationship of the parties.” 
    Id. at 605
    . The Court held
    05-1547, 1578                                 9
    that a defendant’s voluntary change in conduct, even if it accomplishes what the plaintiff
    sought to achieve, lacks the necessary “judicial imprimatur on the change.” 
    Id.
     We
    apply the requirements of Buckhannon to 
    35 U.S.C. § 285
    . See Indep. Fed’n of Flight
    Attendants v. Zipes, 
    491 U.S. 754
    , 759 n.2 (1989) (noting that the similar language of
    fee-shifting statutes is “a strong indication” that they are to be interpreted alike).
    The dispositive issue is thus whether the dismissal with prejudice had sufficient
    judicial imprimatur to constitute a “judicially sanctioned change in the legal relationship
    of the parties.” Buckhannon, 
    532 U.S. at 605
    .
    In this case, the district court exercised its discretion in dismissing the patent
    claims raised in the underlying action with prejudice pursuant to Fed. R. Civ. P. 41(a)(2).
    That rule provides in relevant part that “an action shall not be dismissed at the plaintiff’s
    instance [after answer] save upon order of the court and upon such terms and
    conditions as the court deems proper.” As expressly provided in Rule 41, the district
    court has discretion to condition the plaintiff’s voluntary dismissal on terms that would
    avert any prejudice to the defendant, including dismissing the case “with prejudice.”
    The Eighth Circuit has held that voluntary dismissals under Fed. R. Civ. P. 41(a) should
    be granted only if no other party will be prejudiced. Kern v. TXO Production Corp., 
    738 F.2d 968
    , 970 (8th Cir. 1984). One sort of prejudice that cannot be cured simply by a
    reimbursement of costs (and dismissal without prejudice) is the loss by defendant of
    success in the first case. 
    Id.
     (stating that “[i]f defendant has already won its case,
    reimbursement of fees and expenses cannot make it whole from the injury of being
    sued again, perhaps this time to lose”). Factors that the Eighth Circuit considers in
    determining whether to dismiss with or without prejudice include whether the party has
    05-1547, 1578                                 10
    presented a proper explanation for its desire to dismiss; whether a dismissal would
    result in a waste of judicial time and effort; whether a dismissal will prejudice the
    defendants; and whether a dismissal is sought merely to escape an adverse decision or
    to seek a more favorable forum. Hamm, 187 F.3d at 950. The district court also
    considers whether the motion to dismiss is presented at a late time in the proceedings.
    See Williams v. Ford Motor Credit Co., 
    627 F.2d 158
    , 160 (8th Cir. 1980).
    Highway Equipment cites Rice Services, LTD v. United States, 
    405 F.3d 1017
    (Fed. Cir. 2005), as support for its argument that the dismissal with prejudice does not
    make FECO a prevailing party for purposes of 
    35 U.S.C. § 285
    . In Rice, Rice brought a
    bid protest action in the Court of Federal Claims against the Navy, disputing the award
    of a contract for dining services. The Navy then voluntarily agreed to reevaluate the
    bids, and the government moved to dismiss the case without prejudice as moot. The
    Court of Federal Claims ordered the Navy to take the promised actions and dismissed
    the case without prejudice. 
    Id. at 1019
    . We noted that “the Navy acted unilaterally in
    initiating a reevaluation of bids” and that the Navy acted voluntarily by taking “remedial
    action before any rulings by the Court of Federal Claims.” 
    Id. at 1027
    . We then held
    that Rice was not a prevailing party because “the government had voluntarily
    abandoned its position” and “the court did not state that it was entering the order as a
    merits adjudication in the face of a continuing controversy.” 
    Id. at 1027
    .
    The present situation is different from the situation in Rice, in which voluntary
    action was taken outside the proceedings, was not designed to be judicially
    enforceable, and resulted in a dismissal without prejudice. In contrast to Rice, the
    voluntary filing of the covenant in this case was designed to be judicially enforceable
    05-1547, 1578                               11
    and was the basis for the court’s order dismissing the claims with prejudice.         The
    covenant was not simply an extrajudicial promise made by one party to another outside
    the context of litigation.   The district court’s determination to dismiss the remaining
    controversy with prejudice evidently was prompted by the fact that Highway Equipment
    had prosecuted the case against FECO through the final pretrial conference to the eve
    of trial without any explanation of why the covenant was only then filed with the court.
    In exercising its discretion and dismissing the case with prejudice, following and in light
    of the covenant, the district court extinguished Highway Equipment’s ability to sue again
    on those claims. To hold that, in this circumstance, there has been no disposition on
    the merits would undermine the purpose of Rule 41 to encourage a plaintiff’s voluntary
    dismissal under such terms as to avoid prejudice. Such a holding would imply that the
    only way for a defendant to obtain a disposition on the merits would be to oppose a
    dismissal and proceed to litigation on the merits, and would encourage the litigation of
    unreasonable or groundless claims. See, e.g., Christiansburg Garment Co. v. EEOC,
    
    434 U.S. 412
    , 421 (1978) (holding that prevailing defendants may receive attorney’s
    fees under Title VII of the Civil Rights Act of 1964 where the plaintiff’s actions were
    “frivolous, unreasonable, or without foundation”).
    We have likewise held that a defendant was the prevailing party for purposes of
    costs under Rule 54 where the plaintiff voluntarily dismissed its case against one
    defendant with prejudice. Power Mosfet Techs., L.L.C v. Siemens AG, 
    378 F.3d 1396
    ,
    1416 (Fed. Cir. 2004).       In that case, we stated, “The dismissal of a claim with
    prejudice . . . is a judgment on the merits under the law of the Federal Circuit.” 
    Id.
    Furthermore, we have treated the prevailing party issue under Rule 54 and 
    35 U.S.C. § 05-1547
    , 1578                               12
    285 similarly. See Inland Steel, 
    364 F.3d at 1319-20
    ; see also Manildra Milling, 76 F.3d
    at 1181 n.1 (noting that “the meaning of prevailing party is the same” under § 1988 and
    Rule 54(d)(1)); Dattner v. Conagra Foods, Inc., 
    458 F.3d 98
    , 101 (2d Cir. 2006) (“[T]he
    Court [in Buckhannon] did not suggest—and there is no reason to conclude—that the
    distinction [between costs and fees] affects the meaning of the separate term ‘prevailing
    party’”); Tunison v. Continental Airlines Corp., Inc., 
    162 F.3d 1187
    , 1189-90 (D.C. Cir.
    1998) (noting that the meaning of “prevailing party” is generally same in either context-
    attorney's fees or costs).
    In light of the foregoing precedent, we conclude that as a matter of patent law,
    the dismissal with prejudice, based on the covenant and granted pursuant to the district
    court’s discretion under Rule 41(a)(2), has the necessary judicial imprimatur to
    constitute a judicially sanctioned change in the legal relationship of the parties, such
    that the district court properly could entertain FECO’s fee claim under 
    35 U.S.C. § 285
    .
    See Power Mosfet, 378 F.3d at 1416 (holding that a patent infringement defendant
    obtained a disposition on the merits for purposes of Fed. R. Civ. P. 54(d)(1) where
    patentee voluntarily dismissed its infringement claim with prejudice); Inland Steel, 
    364 F.3d at 1321
     (holding that a patent infringement defendant, who moved for dismissal
    after obtaining cancellation of patents through reexamination proceedings before the
    Patent and Trademark Office obtained a disposition on the merits in infringement action
    for purposes of obtaining attorney fees and costs). FECO’s prevailing party status is not
    predicated on whether Highway Equipment filed a Rule 41(a)(2) motion to dismiss with
    prejudice at the outset but is sufficiently based on its having filed a covenant not to sue
    with the court to end the litigation, resulting in a dismissal with prejudice.
    05-1547, 1578                                 13
    We note that our holding is consistent with the treatment of similar cases within
    other circuits. For example, the Seventh Circuit has held that a voluntary dismissal with
    prejudice meets the Buckhannon test, reasoning that such disposition “effects a material
    alteration of [the] legal relationship with the other parties, because it terminates any
    claims [the plaintiff] may have had against [the defendants] arising out of this set of
    operative facts.” Claiborne v. Wisdom, 
    414 F.3d 715
    , 719 (7th Cir. 2005); see Mother
    and Father v. Cassidy, 
    338 F.3d 704
    , 708 (7th Cir. 2003) (“[A] voluntary dismissal with
    prejudice renders the opposing party a ‘prevailing party’ within the meaning of Rule
    54.”). The Tenth Circuit, in a pre-Buckhannon case, has stated that “a defendant is a
    prevailing party under Rule 54 when, in circumstances not involving settlement, the
    plaintiff dismisses its case against the defendant, whether the dismissal is with or
    without prejudice.” Cantrell v. Int’l Brotherhood of Elec. Workers, 
    69 F.3d 456
    , 456
    (10th Cir. 1995) (en banc); see also Samsung Elec. Co. v. Rambus Inc., 440 F. Supp.
    2d. 495, 511 (E.D. Va. 2006) (holding that a Rule 41(a)(2) dismissal of patent
    infringement counterclaims with prejudice following the patentee’s covenants not to sue,
    was sufficient to constitute a disposition on the merits under 
    35 U.S.C. § 285
    ).
    While the Fifth Circuit has held that, where a plaintiff voluntarily dismisses its
    claims, the defendant is generally not the prevailing party unless “the defendant can
    demonstrate that the plaintiff withdrew to avoid a disfavorable judgment on the merits,”
    Dean v. Riser, 
    240 F.3d 505
    , 510-11 (5th Cir. 2001), that exception to the rule was
    strongly grounded on the competing policies that undergird 
    42 U.S.C. § 1988
    , which are
    different from the policies that undergird 
    35 U.S.C. § 285
    . Also, while the Eighth Circuit
    has applied a rationale similar to that of the Fifth Circuit, holding that, to be a prevailing
    05-1547, 1578                                14
    party, a defendant must point to a judicial determination to its benefit, that holding was
    based on the Eight Circuit’s view (before Buckhannon) that the “‘material alteration of
    the legal relationship among the parties’ definition of a prevailing plaintiff [is not the
    same as the] definition for prevailing defendant.” Marquart v. Int’l Ass’n of Machinists &
    Aerospace Workers, 
    26 F.3d 842
    , 851-52 (8th Cir. 1994). Subsequent decisions of the
    Eighth Circuit have continued to address under what circumstances court orders may
    result in the requisite judicially sanctioned material alteration in the parties’ legal
    relationship. See, e.g., N. Cheyenne Tribe v. Jackson, 
    433 F.3d 1083
    , 1085 n.2.
    Turning to the merits of the fee claim, FECO asserts that the district court erred
    in denying attorney fees because it proved by clear and convincing evidence that this
    case was “exceptional” pursuant to 
    35 U.S.C. § 285
    .         FECO argues that Highway
    Equipment engaged in litigation misconduct and inequitable conduct before the Patent
    and Trademark Office (“PTO”).      Regarding inequitable conduct, FECO argues that
    Highway Equipment failed to disclose material prior art and failed to name an alleged
    co-inventor, Dick Serbousek.
    For the reasons below, we agree with the district court that FECO did not prove
    that this case is exceptional by clear and convincing evidence, and we affirm the district
    court’s determination of no inequitable conduct and no litigation misconduct. First, as
    concerns inequitable conduct, we see no error in the district court’s determination that
    FECO failed to produce clear and convincing evidence that Highway Equipment did not
    act with the requisite intent to deceive the PTO. Fee Order, slip op. at 19. The district
    court found that Highway Equipment discussed the alleged material prior art with its
    patent attorney and investigated its relevance. After this investigation, they were not
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    able to discern how the device operated or whether or not it had a spreader which
    allowed for adjustment of the drop point as disclosed in the ’281 patent. 
    Id.,
     slip op. at
    11-12. Based on these factual findings, which are not clearly erroneous, the district
    court correctly held that FECO has not proven, by clear and convincing evidence, that
    Highway Equipment possessed the requisite intent to deceive the PTO.
    Second, FECO has not shown clear error in the district court’s findings that there
    was no evidence of any intent by Highway Equipment to mislead the PTO by not
    identifying Serbousek as a joint inventor. 
    Id.,
     slip op. at 22. To the contrary, the record
    shows that, at the time the patent was filed, Serbousek indicated that he should not be
    named as an inventor. Fee Order, slip op. at 10. Based on these factual findings,
    which are not clearly erroneous, the district court correctly held that the failure to name
    Serbousek as an inventor did not constitute inequitable conduct. 
    Id.,
     slip op. at 22.
    Third, as concerns Highway Equipment’s alleged litigation misconduct, FECO
    submits six instances of misconduct including improper or untimely disclosure of expert
    reports and exhibits, evasive witness testimony, failure to honor its statutory obligation
    under 322F, and filing the covenant on the “eve of trial.” FECO did not argue before the
    district court that the filing of the covenant not to sue constituted litigation misconduct,
    and we therefore do not address it in the first instance on appeal. FECO cites no
    authority to support that its arguments with respect to 322F are in any way relevant to
    litigation misconduct and we decline to hold that FECO’s assertion of an alleged failure
    to comply with 322F means that this case is exceptional. See Cambridge Prods, Ltd. v.
    Penn Nutrients, Inc., 
    962 F.2d 1048
    , 1051 (Fed. Cir. 1992).          We have considered
    FECO’s remaining allegations of litigation misconduct related to expert reports, witness
    05-1547, 1578                               16
    testimony, and exhibits. FECO has shown no clear error in the district court’s findings
    and we decline to second-guess the district court’s judgment that the defendant is not
    entitled to attorney fees based on litigation misconduct. See Lighting World, Inc. v.
    Birchwood Lighting, Inc., 
    382 F.3d 1354
     (Fed. Cir. 2004) (holding that “[t]he district
    judge is in a far better position to assess [litigation misconduct] than we are”). FECO
    has not shown that the district court’s finding of no litigation misconduct is so clearly
    erroneous as to warrant our overturning the district court’s ruling on that issue. The
    district court’s judgment as to attorney fees under § 285 is affirmed.
    2. The 322F Order
    The district court did err, however, in exercising supplemental jurisdiction by
    authority of 
    28 U.S.C. § 1367
     over FECO’s counterclaim for damages under Iowa Code
    § 322F. Highway Equipment and FECO do not qualify for diversity jurisdiction and did
    not plead the 322F claim as a diversity claim or otherwise independently subject to
    federal jurisdiction. Therefore, the district court’s only basis for jurisdiction over the non-
    federal claim would have been that the claim was not only joined with a federal claim
    over which it had original jurisdiction but, significantly, if the non-federal claim was “so
    related to claims in the action within such original jurisdiction that they form part of the
    same case or controversy under Article III of the United States Constitution.” 
    28 U.S.C. § 1367
    (a); United Mine Workers of Am. v. Gibbs, 
    383 U.S. 715
    , 725 (1966) (holding that
    the district court has supplemental jurisdiction to enter final judgment on a non-federal
    claim only if “the entire action before the court comprises but one constitutional ‘case’”).
    For this relatedness requirement to be satisfied, “[t]he state and federal claims must
    05-1547, 1578                                 17
    derive from a common nucleus of operative fact” such that they would ordinarily be
    expected to be tried in one proceeding. United Mine Workers, 
    383 U.S. at 725
    .
    The district court erred in exercising supplemental jurisdiction pursuant to
    § 1367(a) to hear the 322F count because the 322F count and the patent counts are not
    derived from a common nucleus of operative fact. See Mars, Inc. v. Kabushiki-Kaisha
    Nippon Conlux, 
    24 F.3d 1368
     (Fed. Cir. 1994). In Mars, the plaintiff sued the defendant
    for infringement of a United States and a Japanese patent, asserting that supplemental
    jurisdiction existed over the count alleging infringement of the Japanese patent. Both
    patents were directed to electronic coin discriminators with programmable memories.
    The district court assumed that it had supplemental jurisdiction over the count alleging
    infringement of the Japanese patent, but applied its discretion not to exercise
    jurisdiction over the count. 
    Id. at 1371
    . We held that the district court erred in assuming
    that it had jurisdiction because the claims did not derive from a common nucleus of
    operative fact. 
    Id. at 1375
    . We noted that the asserted claims of the U.S. patent were
    method claims whereas the asserted claim of the Japanese patent was an apparatus
    claim; that the range of accused devices in Japan was broader than in the United
    States; and that the allegations of infringement of the U.S. patent included direct and
    induced infringement whereas the defendant was charged only with direct infringement
    of the Japanese patent.        
    Id.
        Because neither “similar acts” nor the “same
    instrumentality” were at issue, we held that “the foreign patent infringement claim at
    issue here is not so related to the U.S. patent infringement claim that the claims form
    part of the same case or controversy and would thus ordinarily be expected to be tried
    in one proceeding.” We thus concluded that the district court erred in assuming that it
    05-1547, 1578                               18
    had power to hear the Japanese patent infringement claim.                 Id.; see also Ideal
    Instruments, Inc. v. Rivard Instruments, Inc., 
    434 F. Supp. 2d 598
    , 628-33 (N.D. Iowa
    2006) (discussing Mars and finding it to be controlling). In Ideal Instruments, the district
    court in Iowa held that, although original jurisdiction existed over the plaintiff’s first count
    involving the defendants’ alleged infringement of its United States patent, supplemental
    jurisdiction did not extend to the plaintiff’s second count for a declaratory judgment that
    it does not infringe the defendants’ Canadian patent. The Iowa court concluded that,
    because the actor and the acts in each count are different such that the allegations of
    infringement of the United States and foreign patents do not arise from a common
    nucleus of operative fact, it would dismiss the plaintiff’s second count. 
    Id. at 630-31
    .
    In the present case, the 322F count and the federal counts are not derived from a
    “common nucleus of operative fact.” The facts alleged in the 322F count involved the
    alleged wrongful termination of a dealership agreement between the parties that
    designated FECO as a dealer for certain outdoor power equipment manufactured and
    supplied by Highway Equipment.           That dealership agreement was terminated on
    September 16, 2002. The facts alleged in the federal counts involved not a contract,
    but a patent that issued on February 11, 2003, months after the dealership agreement
    was terminated.      Furthermore, the facts alleged in the 322F count involved the
    distribution of Highway Equipment’s products, whereas the facts alleged in the federal
    counts involved a product manufactured by FECO subsequent to the termination of the
    dealership agreement.       Here, as in Mars and Ideal Instruments, the respective
    instrumentalities are different, the products at issue are different, the alleged acts are
    different, and the governing laws are different. Because the facts at issue in the 322F
    05-1547, 1578                                 19
    count are not sufficiently related to those in the federal counts that it forms a part of the
    same case or controversy under Article III of the U.S. Constitution, the district court
    erred in exercising authority to hear the 322F claim under its supplemental jurisdiction
    pursuant to 
    28 U.S.C. § 1367
    (a). Mars, 
    24 F.3d 1375
     (“Federal courts may not assume
    jurisdiction where none exists.”). Thus, the district court’s judgment on the 322F claim
    is vacated and the case is remanded with instructions to dismiss that claim for lack of
    jurisdiction.
    CONCLUSION
    For the above reasons, the final judgment is affirmed-in-part, vacated-in-part, and
    the case is remanded to the district court for further proceedings consistent with this
    opinion.
    AFFIRMED-IN-PART, VACATED-IN-PART and REMANDED.
    COSTS
    No costs.
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