1 Honorable William Stafford, Senior U.S. District Judge for the Northern District of Florida, sitting by designation.
2 The parties agreed to proceed before a ma gistrate pursuant to 28 U.S.C. § 636(c).

EPIC METALS CORP., a Pennsylvania Corpora tion, Plaintiff-Counter-Defendant-Appellee,

v. Frank SOULIERE, Sr.; Condec, Inc., a Florida co rporation, Defendants-C ounter-Claimants-Appellants.
No. 98-2387. United States Court of Appeals, Eleventh Circuit.

July 22, 1999. Appeal from the United States District Court for the Middle District of Florida. No. 92-744-Civ-T-17C, Elizabeth A. Jenkins, U.S. Magistrate Judge. Before ANDERSON, Chief Judge, BL ACK, Circuit Judge, and STAFFORD 1 , Senior District Judge. BLACK, Circuit Judge: Appellants Condec, Inc. and Condec President Frank Souliere (collectively Condec) appeal the trial court's modification of a permanent injunction after th is Court's mandate set aside a portion of the original injunction. Appellants claim the trial court abu sed its discretion by granting Appellee's motion for modification and argue that even if the court had th e discretion to modify, the ordered modification was overbroad. We conclude the trial court had the discr etion to modify the injunction and did not abuse that discretion, and therefore affirm.
I. PROCEDURAL BACKGROUND Appellee Epic Metals Corp. (Epic) sued Condec in June 1992, alleging that Condec's CONDEC steel decking product was a Lanham Act trade dress infringement of Epic's EPICORE steel decking product and that Condec had infringed Epic's Copyright in EPICORE catalogs and promotional materials. After a bench trial, the trial court found in Epic's favor, ruling th at Condec had infringed Epic's copyrighted catalog and trade dress. 2 The court awarded statutory damages for the copyright claims, as well as several thousand3 The Court's 1996 opinion presents a complete explanation of the technical aspects of the dovetail joint design of both parties' steel decking products, which we need not repeat here. See Epic Metals I, 99 F.3d at 1035-37.
4 Section properties tell engineers the amount of deflec tion or sag and the stress or failure point of the steel decking product; calculating section properties is a rather complex engineering task. Load tables are created from performance tests in the field and are used to quantify the load-bearing capabilities of steel decking material. Section properties and load tables provide engineers and architects with critical information relied upon in the design and building process. dollars in damages for the trade dress infringement clai m, reserving jurisdiction over injunctive relief. On June 9, 1995, the trial judge signed a two-paragraph final order of perm anent injunctive relief, forbidding Condec from reproducing or copying Epic's catalog materi als and from "[m]anufacturing, distributing, selling, or offering for sale any composite steel floor deck utilizing the dovetail rib profile of the plaintiff, EPIC METALS CORPORATION ... or any other dovetail rib profile." A three-judge panel of this Court upheld the fi nding of copyright violation without discussion, but reversed the trade dress infringement finding. Epic Metals Corp. v. Souliere, 99 F.3d 1034, 1042 (11th Cir.1996) (Epic Metals I ). 3 On remand from this Court, the trial c ourt struck the paragraph of the injunction that forbade Condec from manufacturing steel decking with a dovetail rib profile, freeing Condec to resume the manufacture and sale of its CONDEC product. The paragraph of the injunction forbidding future copyright violations remained in effect. Shortly thereafter, Epic filed a "Motion to Modify Permanent Injunction in Light of Appellate Court Mandate." In that motion, Epic sought to preven t Condec from holding out to the public that CONDEC has a Underwriter's Laboratory (UL) fire rating until the pr oduct's fire resistance is independently tested. Among the trial court's original findings on the copyright in fringement issue, the court determined that Condec infringed Epic's copyright in its EPICORE Concept 1 catalog and EPICORE Concept 2 catalog when Condec copied the section properties and load tables from th e EPICORE catalogs and submitted them to UL as the section properties and load tables of its own product. 4 UL approved certifi cation for CONDEC without requiring fire resistance testing based on the conclu sion that the load tables for CONDEC matched the already-approved load tables of EPICORE. The trial court found Condec's use of the copyrighted materials5 In its entirety, the new paragraph in the injunction reads: Defendant[s] ... are hereby permanently enjoined from: Advertising, representing or holding out to the public that Defendants possess an Underwriter's Laboratory fire rating ... unless and until such time as Defendants have submitted independent fire tes ting, independently tested load tables and independently calculated section properties information on its CONDEC product, and Underwriter's Laboratory expressly grants Defendants a fire rating ... based upon information other than that unlawfully copied from EPIC's EPICORE Concept 1 catalog. enabled it to avoid the cost of fire testing, whic h could have been as high as $70,000 to $80,000. The trial court also found UL certification is essential because most building codes, especially for commercial properties or multi-unit residential complexes, require steel decking products be UL-certified. Because the injunction as modified by this Court's mandate allowed Condec to resume manufacture of its product, Epic's motion asked the court to prev ent Condec from "benefit[ing] from the fruits of their willful copyright infringement" by enjoining Condec from representing to others that its product has a UL fire rating until CONDEC is independently tested. Treating the motion as a Rule 60(b)(6) motion for post-judgment relief, the trial court first determined that it had jurisdiction to modify the permanent injunction, noting "although this court is bound to follo w the express and implied holdings of the appellate court, it is on remand 'free to address, as a matter of fi rst impression, those issues not disposed of on appeal,' " (citing Piambino v. Bailey, 757 F.2d 1112, 1119 (11th Cir.1985) and others ). The trial court concluded that "[i]f defendants are permitted to use the UL rating th ey obtained through infringement, the original purpose of the injunction would not be fulfille d," and granted the relief requested. 5
II. DISCUSSION Condec appeals, asserting that the court abused its discretion in modifying the injunction because Epic did not make an appropriate showing to jus tify modification and this Court's mandate precludes modification. Alternatively, Condec argues the langua ge of the newly-modified injunction is beyond the scope of the remedies provided for by copyright law.
A. Authority to Modify6 In Bonner v. City of Prichard, 661 F.2d 1206, 1209 (11th Cir.1981) (en banc), this Court adopted as binding precedent all decisions of the former Fifth Circuit handed down prior to close of business on September 30, 1981. Upon appellate review, "[m]otions for relief from a final judgment are addressed to the sound discretion of the district court, guided of course by accepted legal principles." Hand v. United States, 441 F.2d 529, 531 (5th Cir.1971). 6 In this case, those legal principles were set out long ago in United States v. United Shoe Machinery Corp., 391 U.S. 244, 88 S.Ct. 1496, 20 L.Ed.2d 562 (1968) and its progeny. In United Shoe, the United States as plaintiff sought to modify a ten-year-old consent decree and injunction in an antitrust case, arguing that the divestiture goals of the order could only be ach ieved through further court action. United Shoe, 391 U.S. at 247, 88 S.Ct. at 1499. The Supreme Court held the district court had the power to grant the relief requested if the Government showed the decree had failed to accomplish the results it was designed to achieve. United Shoe, 391 U.S. at 251-52, 88 S.Ct. at 1500-01. The Court distinguished its prior decision in United States v. Swift & Co., 286 U.S. 106, 52 S.Ct. 460, 76 L.Ed. 999 (1932), in which the Court set a higher standard for modification of a decree or injunction when " defendants sought relief not to achieve the purposes of the provisions of the decree, but to escap e their impact." United Shoe, 391 U.S. at 249, 88 S.Ct. at 1500 (emphasis added). This Circuit has followed the rule of United Shoewhen a plaintiff seeks to modify a decree or injunction designed to protect plaintiff's interests. In Exxon Corp. v. Texas Motor Exchange of Houston, Inc., 628 F.2d 500 (5th Cir.1980), the Texas Motor Exchange ha d been barred by permanent injunction from using the trademark "TEXXON." The company began instead to use the names "Texon" and "Tex-On," and Exxon moved to modify the permanent injunction to prohibit the use of those names as well. The Court found that "[t]he holding in United Shoe Machineryindicates that an injunction may be modified to impose more stringent requirements on the defendant when 'the orig inal purposes of the injunction are not being fulfilled in any material respect.' " Exxon, 628 F.2d at 503 (citati on omitted). The Court looked at the original purpose of the permanent injunction and concluded that if the plaintiff could establish the new circumstance infringed on that purpose, then the injunction should be modified. Exxon, 628 F.2d at 504; see also Sizzler7 In any event, this Court in Epic Metals I upheld the prior award of both statutory damages and injunctive relief, and we are bound by that prior panel's ruling. See Burger King Corp. v. Pilgrim's Pride Corp., 15 F.3d 166, 169 (11th Cir.1994) (under law of the case doctrine, "findings of fact and conclusions of law by an appellate court are generally binding in all subsequent proceedings in the same case in the trial or on a later appeal." (citations omitted)). Family Steak Houses v. Western Sizzlin Steak House, Inc., 793 F.2d 1529, 1539 (11th Cir.1986) (approving of and applying Exxon 's interpretation of United Shoeto uphold district court's alteration of a permanent injunction). In this case, the trial court was within its discre tion in concluding that this Court's mandate effected a change in circumstances so that modification was require d. The parties and the trial court agreed that the purpose of the original injunction was to prevent Cond ec from infringing on Epic's copyrights. Prior to the Court's decision in Epic Metals I, there was no need to enjoin advertisement of the UL rating because Condec was not allowed to sell the product at all. Once this Court's decision opened the door for Condec to sell its product again, the trial court acted within its discr etion to determine that modification was necessary to prevent Condec from infringing on Epic's copyrights. Absent modification, Condec would reap an unexpected and unintended windfall by using a ULrating obtained through the copyright violation. Condec argues the injunction is duplicative of the st atutory damages awarded. But in copyright the two remedies are not mutually exclusive. See, e.g., Montgomery v. Noga, 168 F.3d 1282, 1304-05 (11th Cir.1999) (looking at both statutory damages award and injunctive relief as bases for concluding that plaintiff prevailed for attorney's fees purposes); Twentieth Century Music Corp. v. Frith, 645 F.2d 6, 7 (5th Cir. Unit B May 1981) (holding defendants have no right to jury trial in copyright action where plaintiffs seek only statutory damages and injunctive relief); see also 4 Nimmer on Copyright § 14.06[B] ("the prevailing plaintiff in a copyright infringement action may obtain, in addition to a monetary recovery, a permanent injunction"). The trial court was well within its discr etion in awarding both statutory damages and injunctive relief. 7
B. Scope of Modification8 Moreover, there is little danger of Condec being forced to incur more testing expenses than absolutely necessary to obtain a legitimate fire rating from UL. The trial court explicitly reserved the right to modify the injunction in Condec's favor, upon a pr oper showing by Condec, "[i]f defendants learn that any language in the permanent injunction prohibits them from obtaining a fire rating from Underwriter's Laboratory which they would legally be able to obtain." Finally, Condec argues that even if injunctive relief is appropriate, the trial court abused its discretion in that it fashioned an injunction that is overbroad , because it (1) reaches beyond the parties of the litigation by requiring UL to withdraw its certification of CONDEC and (2) goes beyond remedying the actual infringement by regulating the "fruit of the infringing tree." We reject both arguments. The injunction does not place any restrictions on UL or any other non-party; it merely regulates Condec's infringing actions. 8 Condec argues for the first time in its reply brief that the injunction as modified impermissibly regulates the "fruit of the infringing tree," or the benefits generated by the original infringement. See4 Nimmer on Copyright § 14.06[C]. This court does not address arguments raised for the first time in a reply brief. Hall v. Coram Healthcare Corp., 157 F.3d 1286, 1290 (11th Cir.1998).
III. CONCLUSION The trial court did not abuse its discretion in fi nding that without modification the original purposes of the injunction would be unfulfilled in a material respect, nor is the injunction as modified overbroad.
AFFIRMED.