MDS (Canada) Inc. v. Rad Source Technologies, Inc., etc. , 39 Fla. L. Weekly Supp. 489 ( 2014 )


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  •           Supreme Court of Florida
    ____________
    No. SC13-1215
    ____________
    MDS (CANADA) INC., et al.,
    Appellants,
    vs.
    RAD SOURCE TECHNOLOGIES, INC., etc.,
    Appellee.
    [July 10, 2014]
    PARIENTE, J.
    In this complex commercial litigation involving a patent license agreement
    that has at its core issues of Florida contract law, the certified question from the
    United States Court of Appeals for the Eleventh Circuit involves whether the
    licensee’s transfer of its interest in the patent license agreement constituted an
    assignment or a sublicense.1 The legal issue that is the crux of the question
    presented to this Court is whether Florida law recognizes a “bright-line rule” that
    distinguishes an assignment from a sublicense when a licensee transfers its entire
    1. We have jurisdiction because the Eleventh Circuit certified a question
    that is “determinative of the cause and for which there is no controlling precedent.”
    Art. V, § 3(b)(6), Fla. Const.
    interest in a license agreement except for one day. Accordingly, to focus on this
    narrow issue of Florida law, we rephrase the question certified by the Eleventh
    Circuit2 as follows:
    DOES FLORIDA RECOGNIZE A “BRIGHT-LINE RULE” TO
    DISTINGUISH AN ASSIGNMENT OF A LICENSE AGREEMENT
    FROM A SUBLICENSE?
    We answer the rephrased certified question in the negative and hold that
    under Florida law, whether an agreement transferring the licensee’s interest in the
    license agreement constitutes an assignment or a sublicense is not determined by
    the mere application of a “bright-line rule.” Instead, this legal determination
    depends on a multitude of factors, including the language of the license agreement
    and its subject matter, the substance of the interest that was actually transferred by
    the licensee, and whether the licensee retained any substantial rights in the license
    agreement. Further, we conclude that the analysis concerning the issue of
    assignments and subleases in cases involving interests in real property, which is the
    2. The following question was certified by the Eleventh Circuit:
    WHEN A LICENSEE ENTERS INTO A CONTRACT TO
    TRANSFER ALL OF ITS INTERESTS IN A LICENSE
    AGREEMENT FOR AN ENTIRE TERM OF A LICENSE
    AGREEMENT, SAVE ONE DAY, BUT REMAINS LIABLE TO
    THE LICENSOR UNDER THE LICENSE AGREEMENT, IS THE
    CONTRACT AN ASSIGNMENT OF THE LICENSE
    AGREEMENT, OR IS THE CONTRACT A SUBLICENSE?
    MDS (Canada), Inc. v. Rad Source Techs., Inc., 
    720 F.3d 833
    , 856 (11th Cir.
    2013).
    -2-
    primary case law upon which the Appellants rely, does not readily translate to a
    transfer of rights in a patent license agreement, and that cases construing patents,
    such as those relied on by the federal district court, are instructive in providing
    guiding principles for the type of interest at the heart of this case.
    In many cases, including this one, a consideration of the pertinent factors
    and the ultimate resolution of whether the transfer of the licensee’s interest
    constitutes an assignment or a sublicense is a mixed question of law and fact. For
    this reason, we limit our discussion in this opinion to the rephrased certified
    question of Florida law. We decline to decide the ultimate issue regarding whether
    the transfer of the licensee’s interest in this case was a sublicense or an assignment,
    leaving that legal determination for the Eleventh Circuit in this complex case
    involving patents that has been extensively litigated in the federal courts.
    FACTS AND PROCEDURAL HISTORY
    The Eleventh Circuit described the factual scenario of this case as
    “complex.” MDS (Canada), Inc. v. Rad Source Techs., Inc., 
    720 F.3d 833
    , 850
    (11th Cir. 2013). Because this case is before us to answer a legal question where
    the underlying facts have been extensively litigated in federal court, we accept as
    true the relevant facts presented in the detailed opinions of the Eleventh Circuit and
    the federal district court. As a means of providing background and context to our
    review of the certified question, we briefly set forth an overview of those facts.
    -3-
    The relevant parties are Rad Source Technologies, Nordion,3 and Best
    Medical. Rad Source, a Florida corporation with its principal place of business in
    Georgia, is a company that specializes in research and development of irradiation
    technologies. 
    Id. at 838.
    Irradiation refers to a process by which pathogens and
    microbes are eliminated from blood to reduce the risk of disease in transfusions.
    
    Id. In the
    late 1990s, Rad Source became the first company to replace
    radioactive isotopes with X-rays as the means of irradiating blood, when it
    developed the RS 3000 blood irradiation device, for which Rad Source acquired
    three patents. 
    Id. Rad Source
    manufactured and sold the RS 3000 device from
    1999 until 2003, at which time it entered into a license agreement with Nordion, a
    Canadian company specializing in the detection, prevention, and diagnosis of
    disease, who then marketed the RS 3000 as the “Raycell.” 
    Id. This license
    agreement extended until the last of the patents expires in 2022. 
    Id. at 838-39.
    The license agreement between Rad Source and Nordion provides that no
    assignment of either party’s rights or obligations may occur without the express
    3. Nordion was formerly known as MDS Nordion, which was a division of
    MDS (Canada), Inc. The company is referred to as “Nordion” in the Eleventh
    Circuit’s opinion and in the briefs filed in this Court, although “MDS (Canada),
    Inc.” is the primary name that still appears in the case caption, which we have
    adopted from the Eleventh Circuit.
    -4-
    written consent of the other party. Specifically, article 13.9 of the license
    agreement, entitled “Assignment,” states as follows:
    This Agreement shall inure to the benefit of and shall be binding upon
    the heirs, successors and permitted assigns of the parties. Neither
    Nordion nor Rad Source may assign any of its rights or delegate any
    of its obligations under this Agreement without the express written
    consent of the other party, such consent not to be unreasonably
    withheld; provided that (i) either party may assign any of its rights or
    delegate any of its obligations under this Agreement, in whole or in
    part, to any of its Affiliates, without consent of the other party, but
    without relieving the delegating party from the responsibility for
    performance of any of such obligations and (ii) either party may
    assign its rights and delegate its duties and obligations (in whole and
    not in part) under this Agreement to an entity which acquires all, or
    substantially all, of its assets or business, without the consent of the
    other party, provided that such assignee duly and effectively assumes
    all of the obligations of the assigning party hereby by instrument
    satisfactory to the other party. Any assignment in violation of the
    provisions of this section shall be void.
    Although the license agreement clearly prohibits the licensee, Nordion, from
    assigning any of its interests without the consent of the licensor, Rad Source,
    article 3.1 of the license agreement, entitled “Grant of License,” grants Nordion an
    exclusive right and license that is transferable, with the right to grant sublicenses to
    third parties, “on such terms as are consistent with this Agreement to Use the
    Licensed Technology for the System (including as modified by Nordion) and for
    the single power supply version of the System, in the Territory.”
    In December 2007, Nordion requested that Rad Source consent to an
    assignment of the license agreement to Best, a third party that was buying
    -5-
    Nordion’s External Beam Therapy and Self Contained Irradiator business. MDS
    
    (Canada), 720 F.3d at 839
    . Rad Source initially refused, but then agreed to
    consider the transaction and asked for further information on the sale, which it
    never received. 
    Id. In a
    phone conference the following month, Nordion “told Rad
    Source that it would sublicense its rights under the contract to Best if Rad Source
    did not consent,” but Rad Source continued to withhold its consent to the
    assignment. 
    Id. In April
    2008, without the express written consent of Rad Source, Nordion
    and Best entered into an agreement they titled a “sublicense agreement.” Under
    this agreement, Nordion “purported to grant Best” all of Nordion’s rights under the
    license agreement, while Best agreed to assume and perform all of Nordion’s
    obligations, as well as to “indemnify Nordion in the event of a suit by Rad Source
    alleging a breach of the License Agreement.” 
    Id. The term
    of the agreement entitled a “sublicense agreement” between
    Nordion and Best was one day shorter than the term of Nordion’s license
    agreement with Rad Source. 
    Id. Further, the
    agreement between Nordion and Best
    provided that “Nordion would not be required to make any payments to Rad
    Source until Nordion received payment from Best.” 
    Id. Nordion also
    remained
    liable to Rad Source under the original license agreement. 
    Id. at 856.
    -6-
    In addition, and as part of the asset purchase agreement between Nordion
    and Best, Nordion signed a non-compete agreement, “promising not to directly or
    indirectly manufacture, develop, market or sell technology based on blood
    irradiators.” 
    Id. at 839.
    The asset purchase agreement listed as items sold to Best
    “the intellectual property from Rad Source and the Raycell line.” 
    Id. at 840.
    When Rad Source began marketing a new device, the RS 3400, which used
    different technology than the technology used in the RS 3000 device licensed to
    Nordion, Rad Source received a cease and desist letter from Nordion and Best,
    demanding that it stop doing so. 
    Id. Rad Source
    responded by letter, alleging that
    Nordion was in breach of the license agreement. 
    Id. Soon after,
    Nordion and Best
    filed suit, and Rad Source filed a counterclaim. 
    Id. After a
    ten-day bench trial, the United States District Court for the Southern
    District of Florida denied recovery of damages for either party and dismissed the
    case on the merits. 
    Id. As relevant
    to the sole issue before this Court, the federal
    district court concluded that the agreement between Nordion and Best was a
    prohibited assignment and not a sublicense, providing the following reasoning:
    The Sublicense Agreement substantively transferred all rights
    held by [Nordion] in the technology licensed under the License
    Agreement to Best Medical and Best Theratronics. Indeed, it was
    originally [Nordion’s] intent to completely assign and transfer any
    interest that [Nordion] had in the License Agreement to Best prior to
    Rad Source’s withheld consent. The provisions of the Sublicense
    Agreement reveal that [Nordion] attempted to divest itself of all rights
    and obligations under the License Agreement and, as a practical
    -7-
    matter, transfer those rights and obligations to Best Medical and Best
    Theratronics.
    I also determine that [Nordion] breached the License
    Agreement first by the purported Sublicense Agreement, which was in
    effect an assignment of Nordion’s rights under the License Agreement
    to Best without express written consent . . . .
    ....
    “[A]n exclusive license may be tantamount to an
    assignment . . . if it conveys to the licensee all substantial rights to the
    patent at issue.” Aspex Eyewear, Inc. v. Miracle Optics, Inc., 
    434 F.3d 1336
    , 1340 (Fed. Cir. 2006). “The initial inquiry for determining
    whether or not there has been a transfer by the holder of ‘property
    consisting of all substantial rights to a patent’ requires consideration
    of what the holder has left after the transfer. If he retains any
    substantial rights to the patent, then he has not transferred the property
    that comprises all those rights.” Devlin v. Ingrum, 
    928 F.2d 1084
    ,
    1094 (11th Cir. 1991) (citations omitted). In order to determine
    whether an agreement to transfer rights to a patent amounts to an
    assignment or a license, courts must review the parties’ intention and
    examine “the substance of what was granted.” Aspex 
    Eyewear, 434 F.3d at 1340
    (citation omitted); see also Flexiteek Ams., Inc. v.
    Plasteak, Inc., 
    626 F. Supp. 2d 1251
    , 1257–58 (S.D. Fla. 2009)
    (holding that extrinsic evidence and surrounding circumstances
    considered to determine whether agreement was assignment).
    ....
    Based on the evidence presented at trial, it is apparent that the
    parties did not intend that the sublicensing rights—in relation to the
    assignment clause—permit a situation where the License Agreement
    could be assigned by sublicense if a party reasonabl[y] withheld
    consent to the assignment. Elsewise, the right of consent to
    assignment would effectively be written out of the License
    Agreement.
    MDS (Canada), Inc. v. Rad Source Techs., Inc., 
    822 F. Supp. 2d 1263
    , 1307-11
    (S.D. Fla. 2011).
    Nordion and Best raised several issues on appeal, and the Eleventh Circuit
    affirmed in part, resolved dispositive issues in favor of Rad Source, and left a
    -8-
    single dispositive issue for certification to this Court. MDS 
    (Canada), 720 F.3d at 856
    . As related to the certified question, Nordion and Best challenged the federal
    district court’s conclusion that Nordion’s transfer of its interest in the license
    agreement to Best “was tantamount to an unconsented-to assignment.” 
    Id. at 854.
    The Eleventh Circuit determined that it was “uncertain” of the proper resolution of
    whether, under Florida law, the federal district court erred in concluding that the
    transfer was an assignment. 
    Id. Prior to
    certifying the issue to this Court,
    however, the Eleventh Circuit set forth the arguments in favor of treating the
    transfer as an assignment. See 
    id. at 855-56.
    The Eleventh Circuit explained that this Court has stated that “[t]he form of
    an assignment of lease is immaterial; its character in law being determined by its
    legal effect.” 
    Id. at 855
    (quoting C.N.H.F., Inc. v. Eagle Crest Dev. Co., 
    128 So. 844
    , 845 (Fla. 1930)). As stated by the Eleventh Circuit, “[h]ere, the evidence
    shows that Nordion and Best entered into an agreement with assignment in mind
    and only when Rad Source refused to consent to the assignment did [Nordion and
    Best] decide to treat the transfer as a sublicense.” 
    Id. Judge Pryor
    dissented in part, asserting that Florida follows a “bright-line
    rule to distinguish an assignment from a sublease.” 
    Id. at 857
    (Pryor, J.,
    concurring in part and dissenting in part). The Eleventh Circuit majority, however,
    rejected the cases cited by Judge Pryor on the basis that those cases “are all
    -9-
    distinguishable and none involve a situation where the subcontracting parties
    sought an assignment but upon failing to garner the requisite consent, created a
    sublicense that retained solely a single day and no other rights.” 
    Id. at 855
    .
    According to the Eleventh Circuit, no Florida case addresses the issue of “the
    retention of an inconsequential term of the contract, when the sublicensing party
    completely divested itself of the business,” but instead, other Florida cases dealing
    with the issue of assignments “have facts quite dissimilar to this case.” 
    Id. The Eleventh
    Circuit then stated that it was “uncertain how the Florida courts would
    interpret this situation,” and certified the question to this Court. 
    Id. at 856.
    4
    ANALYSIS
    Based on the Eleventh Circuit’s question, the issue that this Court must
    consider is whether Florida law recognizes a “bright-line rule” that distinguishes an
    assignment from a sublicense when a licensee transfers its entire interest in a
    license agreement except for one day. We begin our analysis by reviewing the
    Court’s precedent and the relevant case law on assignments and sublicenses.
    I. The Case Law
    4. The Eleventh Circuit explained that, “[i]f the Florida Supreme Court
    holds that the transfer to Best is an assignment and therefore the first, material
    breach [of the license agreement], then neither Nordion nor Best have any claim
    for damages against Rad Source,” even though Rad Source subsequently breached
    the non-compete clause of the license agreement. 
    Id. at 854
    n.9.
    - 10 -
    Most of the case law concerning assignments and either subleases or
    sublicenses arises in the real property context. Indeed, the Appellants, Nordion
    and Best, rely on numerous real property cases in support of their argument that
    Florida recognizes a “bright-line rule” to distinguish an assignment from a
    sublicense. A review of Florida and out-of-state cases demonstrates, however,
    why precedent from the real property context is not necessarily controlling.
    In 
    C.N.H.F., 128 So. at 845
    , this Court long ago stated that “[a]n assignment
    by a lessee transfers his entire interest in the demised premises or a part thereof for
    the unexpired term of the original lease.” Even in that context, however, the Court
    explained that “[t]he form of an assignment of lease is immaterial; its character in
    law being determined by its legal effect.” 
    Id. Dissenting in
    part from the Eleventh Circuit’s decision, Judge Pryor relied
    on the Florida Fifth District Court of Appeal’s decision in Lauren Kyle Holdings,
    Inc. v. Heath-Peterson Construction Corp., 
    864 So. 2d 55
    (Fla. 5th DCA 2003),
    another real property-related case, as support for his assertion that “Florida courts
    use a bright-line rule to distinguish an assignment from a sublease.” MDS
    
    (Canada), 720 F.3d at 857
    (Pryor, J., concurring in part and dissenting in part). In
    Lauren Kyle, the Fifth District addressed an agreement for the exclusive right to
    purchase certain real estate lots that prohibited an assignment of the agreement
    without the consent of the 
    owner. 864 So. 2d at 56-57
    . When the purchaser
    - 11 -
    entered into a contract to sell the lots to a third party, without seeking the consent
    of the owner, the owner filed suit for breach of contract, and the trial court found
    that the purchaser had breached the agreement “when [it] assigned all [its] rights
    under [the purchase agreement] to a third party.” 
    Id. at 58.
    The Fifth District reversed, stating that the purchaser did not transfer to the
    third party the right to purchase lots from the owner, and the third party “only
    obtained the right to purchase lots” from the purchaser. 
    Id. According to
    the Fifth
    District, the purchaser “remained liable to sell lots to [the third party] even if [the
    owner] defaulted in its obligation to sell,” and the third party “could not enforce its
    right to purchase lots directly against [the owner].” 
    Id. Without addressing
    whether the purchaser had also transferred the exclusive right to construct homes
    that was part of the original agreement, the Fifth District concluded that an
    assignment did not occur because the exclusive right to purchase was not actually
    transferred and the purchaser retained the right to purchase lots from the owner in
    the event of a default by the third party. 
    Id. The Eleventh
    Circuit aptly articulated why the considerations in Lauren
    Kyle are different from those that underlie the certified question in this case,
    stating as follows:
    [I]n that case, there was no attempt by Sago [the purchaser], the party
    seeking to sublicense, to obtain consent from Peterson [the owner],
    the other party, before it transferred to Sunland [the third party], the
    purported sublicensee. Thus, there was no indication of an attempt to
    - 12 -
    create an assignment that was rebuffed, as there was here. The
    transfer in Lauren Kyle may well have been mere inadvertence, and
    certainly was not a blatant attempt to circumvent the consent
    requirement, as there was here. More significantly, the court in
    Lauren Kyle never mentioned the parties’ intent, or whether the
    transfer contravened the intention of the parties. Finally, the Lauren
    Kyle court saw the transfer as contemplating the continuing
    involvement of Sago. See Lauren 
    Kyle, 864 So. 2d at 58
    (“Sago did
    not transfer to Sunland the right to purchase lots from Peterson;
    Sunland only obtained the right to purchase lots from Sago.”). In
    other words, the parties contemplated that Sago would continue to buy
    lots from Peterson, and then sell the same to Sunland. By contrast, the
    parties to the conveyance from Nordion to Best contemplated no
    further involvement by Nordion; it transferred its entire interests (save
    only one day) and completely got out of the business. There was
    nothing left for Nordion to do with respect to Rad Source.
    MDS 
    (Canada), 720 F.3d at 855
    . Lauren Kyle, as a case arising in the real
    property context with very different facts, thus does not assist our analysis of the
    certified question because it is completely distinguishable.
    The Eleventh Circuit further noted that Judge Pryor’s dissenting-in-part
    opinion relied primarily on cases from Florida’s district courts of appeal that
    mostly “just cite the rule as stated in Lauren Kyle and have facts quite dissimilar to
    this case.” 
    Id. Importantly, other
    than C.N.H.F., the only case from this Court
    cited by Judge Pryor—our decision in Continental Casualty Co. v. Ryan Inc.
    Eastern, 
    974 So. 2d 368
    (Fla. 2008)—is equally distinguishable and unpersuasive.
    See MDS 
    (Canada), 720 F.3d at 857
    (Pryor, J., concurring in part and dissenting in
    part). Continental Casualty was a statutory interpretation case involving principles
    of subrogation and equitable subrogation in the context of sureties, issues that are
    - 13 -
    wholly distinct from the issue embodied in the rephrased certified question. See
    Continental 
    Casualty, 974 So. 2d at 375
    .
    Although Nordion and Best cite numerous out-of-state cases in the real
    property context to argue that this Court should adopt the view that Florida
    recognizes a “bright-line rule” to distinguish between an assignment and a
    sublicense, this case, which arises from a dispute concerning the transfer of patent
    rights, is wholly unlike a real property case in several legally significant ways.5
    For instance, in the real estate context, a lessee typically may not grant multiple
    subleases concurrently because two people cannot occupy the same premises
    simultaneously. Here, on the other hand, Nordion’s right to grant sublicenses to
    third parties was not limited in this way, and, in fact, the parties to the original
    license agreement may actually have intended exactly the opposite—that Nordion
    would be permitted to sublicense its exclusive right and license to numerous
    parties to facilitate and expand the marketing of Rad Source’s device.
    5. One of the primary cases cited by Nordion and Best that encapsulates
    their argument is a 1989 decision from the Nebraska Supreme Court. See Am.
    Cmty. Stores Corp. v. Newman, 
    441 N.W.2d 154
    (Neb. 1989). That case, which
    cited a treatise on real property law as the authority for considering whether a
    transfer in land is an assignment or a sublease, involved numerous additional
    considerations different from those in this case, including a Nebraska policy to
    construe a covenant in a lease against assignment or subletting liberally in favor of
    the lessee, whether a right of reentry is a reversionary interest sufficient to qualify
    a transfer of rights under a lease agreement as a sublease rather than an assignment,
    and arguments concerning the exercise of a lease renewal option. See 
    id. at 158-
    60.
    - 14 -
    Another difference between the transfer in this case and the transfer in a real
    property case is evident when considering the different motivations and concerns
    of the licensor. Unlike a typical landlord, Rad Source had a vested interest in the
    long-term commitment of its licensee, whose ability to market Rad Source’s
    product implicated the joint reputation of both companies. As stated by the
    Eleventh Circuit, here, “Rad Source believed it had entered into a long-term
    relationship with Nordion, and had confidence in Nordion’s interest in, and ability
    to market, the product and technology Rad Source had developed.” MDS
    
    (Canada), 720 F.3d at 850
    . To the contrary, “Rad Source did not have the same
    confidence in Best,” and “Nordion refused to provide information [to Rad Source]
    about Best and about Nordion’s transaction with Best.” 
    Id. In fact,
    this was the
    reason that the federal district court found, and the Eleventh Circuit affirmed, that
    Rad Source’s refusal to consent to an assignment was not unreasonable. See 
    id. As the
    Eleventh Circuit stated in explaining why no case—particularly no
    case in the real property context—directly answers the question presented, this
    case involves “a blatant attempt to circumvent the consent requirement” for an
    assignment that was included in the license agreement between Nordion and Rad
    Source. 
    Id. at 855
    . Further, unlike Lauren Kyle, for example, “the parties to the
    conveyance from Nordion to Best contemplated no further involvement by
    Nordion.” 
    Id. - 15
    -
    Looking to out-of-state cases for direction also is not particularly
    illuminating, although one case does provide some limited guidance. Specifically,
    the Supreme Court of Arkansas has recognized that “the question of whether an
    instrument is an assignment or a sublease,” at least in the real property context, is
    in most jurisdictions “determined by principles applicable to feudal tenures.” Jaber
    v. Miller, 
    239 S.W.2d 760
    , 761 (Ark. 1951). According to the Arkansas Supreme
    Court, “[t]he doctrine established in England is quite simple: If the instrument
    purports to transfer the lessee’s estate for the entire remainder of the term it is an
    assignment, regardless of its form or of the parties’ intention.” 
    Id. However, under
    this doctrine, “if the instrument purports to transfer the lessee’s estate for
    less than the entire term—even for a day less—it is a sublease, regardless of its
    form or of the parties’ intention.” 
    Id. Although setting
    forth this historical rule, the Arkansas Supreme Court has
    aptly described the old English doctrine of discerning the difference between an
    assignment and a sublease as creating an “arbitrary distinction” and has explained
    that the intentions of the parties are critical in determining whether an instrument is
    an assignment or a sublease. 
    Id. In doing
    so, the Arkansas Supreme Court has
    stated as follows:
    For these reasons we adopt as the rule in this State the principle
    that the intention of the parties is to govern in determining whether an
    instrument is an assignment or a sublease. . . . The duration of the
    primary term, as compared to the length of the sublease, may in some
    - 16 -
    instances be a factor in arriving at the parties’ intention, but we do not
    think it should be the sole consideration.
    
    Id. at 764.
    While this Arkansas case is useful in explaining why the application of a
    “bright-line rule” creates an “arbitrary distinction” between an assignment and a
    sublicense, reviewing cases from the patent context is even more persuasive,
    particularly in this case that concerns a transfer of patent rights. For instance, as
    acknowledged by the federal district court, “[i]n order to determine whether an
    agreement to transfer rights to a patent amounts to an assignment or a license,
    courts must review the parties’ intention and examine ‘the substance of what was
    granted.’ ” MDS 
    (Canada), 822 F. Supp. 2d at 1310
    (quoting Aspex Eyewear, Inc.
    v. Miracle Optics, Inc., 
    434 F.3d 1336
    , 1340 (Fed. Cir. 2006) (citation omitted)).
    “[A]n exclusive license may be tantamount to an assignment . . . if it
    conveys to the licensee all substantial rights to the patent at issue.” Aspex
    
    Eyewear, 434 F.3d at 1340
    (emphasis added). Indeed, the United States Supreme
    Court long ago recognized in the patent context that “[w]hether a transfer of a
    particular right or interest under a patent is an assignment or a license does not
    depend upon the name by which it calls itself, but upon the legal effect of its
    provisions.” Waterman v. Mackenzie, 
    138 U.S. 252
    , 256 (1891).
    We embrace the reasoning of these cases, particularly as applied to the issue
    of a transfer of patent rights, as consistent with Florida jurisprudence. Indeed,
    - 17 -
    while we agree with the Eleventh Circuit that federal patent law is not controlling
    in this case, it assists in our analysis to review relevant, persuasive law on the
    subject matter of the dispute. As these patent cases—relied on by the federal
    district court in this case to conclude that the transfer from Nordion to Best was an
    assignment—make clear, the question of whether a particular transfer of a
    licensee’s interest in a license agreement is an assignment or a sublicense cannot
    be divorced from the subject matter of the transaction and whether the agreement
    transferred “all substantial rights to the patent.” Aspex 
    Eyewear, 434 F.3d at 1340
    .
    The subject matter of the transaction, as demonstrated by these patent cases,
    is certainly an important consideration. We turn next to explaining what other
    factors are also critical to the resolution of whether a particular transfer of a
    licensee’s interest in a license agreement constitutes an assignment or a sublicense.
    II. No “Bright-Line Rule”
    We conclude that there is no “bright-line rule” of Florida law that
    automatically distinguishes an assignment from a sublicense. We reach this
    conclusion for several reasons.
    First, the absence of a “bright-line rule” under Florida law is consistent with
    this Court’s precedent. As this Court explained in C.N.H.F., “[t]he form of an
    assignment of lease is immaterial; its character in law being determined by its legal
    
    effect.” 128 So. at 845
    . Although this statement does not in itself answer the
    - 18 -
    rephrased certified question, it does support the conclusion that this Court has
    never recognized a “bright-line rule,” as noted by the Eleventh Circuit. See MDS
    
    (Canada), 720 F.3d at 855
    .
    Second, a “bright-line rule” would permit the intentions of the original
    contracting parties to be circumvented and would thus be inconsistent with the
    principle of law from C.N.H.F. that the “legal effect” of the transfer is what
    governs the determination of whether the contract is an assignment or a 
    sublicense. 128 So. at 845
    . More specifically, this case demonstrates that a review of various
    factors—many of which are factually dependent and involve mixed questions of
    law and fact—is essential in determining the “legal effect” of the transfer.
    For example, as the Eleventh Circuit stated in this case, although Nordion
    retained a one-day reversionary interest in the license agreement, Nordion also
    “completely got out of the business,” which meant that there “was nothing left for
    Nordion to do with respect to Rad Source.” MDS 
    (Canada), 720 F.3d at 855
    .
    Indeed, the entire relationship between Nordion and Rad Source was changed by
    Nordion’s transfer to Best, as Nordion substantively transferred all of its
    interests—except for one day—in the license agreement to Best and retained
    essentially nothing. See MDS 
    (Canada), 822 F. Supp. 2d at 1307-08
    . This factor
    would support the conclusion that the transfer was an assignment.
    - 19 -
    On the other hand, Nordion remained liable to Rad Source under the original
    license agreement. At the same time, Best agreed to broadly indemnify Nordion
    for any claim brought by Rad Source pursuant to the license agreement. Unlike the
    previous factor, which unequivocally weighs in favor of the transfer being deemed
    an assignment, the retention of liability by Nordion is a factor that could weigh in
    favor of the transfer being considered either an assignment or a sublicense,
    depending on the specific nature of the liability.
    Although the Eleventh Circuit mentioned this factor in the phrasing of the
    question it certified to this Court, neither the federal district court nor the Eleventh
    Circuit provided any further insight into the issue of Nordion’s continued liability
    to Rad Source under the license agreement. While the retention of liability
    certainly could be an important factor in certain circumstances, in this factual
    scenario, it may be inconsequential because Rad Source did not consent to an
    assignment of Nordion’s interest, which was required by the terms of the license
    agreement. Therefore, in the absence of Rad Source’s consent, Nordion had no
    legal ability to unilaterally divest itself of its liability to Rad Source under the
    original license agreement. See Biosynexus, Inc. v. Glaxo Grp. Ltd., 
    816 N.Y.S.2d 693
    (N.Y. Sup. Ct. 2006) (table) (stating that continued liability was “a matter of
    mere form rather than substance” where the purported sublicensee fully
    indemnified and agreed to defend and hold harmless the licensee for any liability
    - 20 -
    under the original agreement, and concluding that this weighed in favor of treating
    the transfer as an assignment). So Nordion did the next best thing, which was as
    much as it legally could without Rad Source’s consent, by ensuring that Best
    would be liable to Nordion through an indemnification clause.
    While in this circumstance, the retention of liability does not weigh in favor
    of the agreement being deemed a sublicense, the key factor in distinguishing
    between an assignment and a sublicense is the intention of the parties, as set forth
    in the original license agreement. In accordance with general principles of contract
    interpretation, the actual language of the license agreement “is the best evidence of
    the parties’ intent, and its plain meaning controls.” Crawford v. Barker, 
    64 So. 3d 1246
    , 1255 (Fla. 2011) (quoting Richter v. Richter, 
    666 So. 2d 559
    , 561 (Fla. 4th
    DCA 1995)); see also Taylor v. Taylor, 
    1 So. 3d 348
    , 350 (Fla. 1st DCA 2009)
    (“Contract interpretation begins with a review of the plain language of the
    agreement because the contract language is the best evidence of the parties’ intent
    at the time of the execution of the contract.”). “To determine the intent of the
    parties, a court should consider the language in the contract, the subject matter of
    the contract, and the object and purpose of the contract.” Am. Home Assurance
    Co. v. Larkin Gen. Hosp., Ltd., 
    593 So. 2d 195
    , 197 (Fla. 1992).
    Here, the license agreement provided that an assignment required the
    consent of the licensor, while a sublicense did not. In other words, the parties to
    - 21 -
    the license agreement clearly intended that consent would be required for Nordion
    to assign its interest, but did not require consent for Nordion to grant a sublicense.
    Specifically, although the license agreement between Rad Source and Nordion
    permitted Nordion the right to grant sublicenses, Rad Source contends that “the
    parties never intended that Nordion could sublicense the entire License Agreement
    to a third party.” A review of the actual agreement provides support for this
    contention.
    Article 3.1 of the license agreement, entitled “Grant of License,” granted to
    Nordion an exclusive right and license to the patented technology that was
    transferable, with the right to grant sublicenses to third parties, “on such terms as
    are consistent with this Agreement to Use the Licensed Technology for the System
    (including as modified by Nordion) and for the single power supply version of the
    System, in the Territory.” After considering the voluminous testimony and
    arguments of the parties, the federal district court found as follows with respect to
    this right to grant sublicenses:
    Based on the evidence presented at trial, it is apparent that the
    parties did not intend that the sublicensing rights—in relation to the
    assignment clause—permit a situation where the License Agreement
    could be assigned by sublicense if a party reasonabl[y] withheld
    consent to the assignment. Elsewise, the right of consent to
    assignment would effectively be written out of the License
    Agreement.
    - 22 -
    MDS 
    (Canada), 822 F. Supp. 2d at 1310
    -11. Therefore, as found by the federal
    district court, the original contracting parties did not intend for the right to
    sublicense to permit the circumvention of the requirement of consent to an
    assignment.
    Certainly, in the case of marketing a product, there would be value in
    allowing the licensee to sublicense its exclusive right to other entities in order to
    increase the sales of the product. On the other hand, allowing the licensee to
    “sublicense” the entire agreement itself has different considerations and could
    actually thwart the original intent of the parties. It is clear that this intent cannot be
    circumvented simply by labeling the transfer a “sublicense agreement.” The name
    of the agreement is not determinative under Florida law.
    Other factors are also relevant to the analysis and help to explain why the
    application of a “bright-line rule” in all situations without considering the facts and
    circumstances of the case would lead to arbitrary results frustrating the intent of the
    parties to the original license agreement. Among these factors is that the
    agreement between Nordion and Best apparently altered Rad Source’s rights under
    the license agreement because it provided that Nordion was not required to make
    any payments to Rad Source pursuant to the license agreement before first
    receiving payment from Best—a factor that weighs in favor of the transfer being
    deemed an assignment. See Biosynexus, 
    816 N.Y.S.2d 693
    (concluding that a
    - 23 -
    third party’s assumption of the licensee’s royalty obligations weighed in favor of
    finding the transfer to be an assignment and ultimately holding that a purported
    sublicense agreement delegating “substantially all” of the licensee’s obligations
    under the original agreement was in fact an unconsented-to assignment). Further,
    because the license agreement did not expire until the same day as the last of the
    patents expires in 2022, the Eleventh Circuit explained that the retention of a single
    day at the end of the license agreement was an “inconsequential term.” MDS
    
    (Canada), 720 F.3d at 855
    .
    Conversely, as pointed out by Judge Pryor in his dissenting-in-part opinion,
    Nordion “retained the right to use the licensed technology after the conclusion of
    the original license agreement without any further obligations to Rad Source.” 
    Id. at 858
    (Pryor, J., concurring in part and dissenting in part). This alleged retention
    of rights, which is a mixed question of law and fact that we are not in a position to
    evaluate, could likewise weigh either in favor of concluding that the transfer from
    Nordion to Best was an assignment or a sublicense, depending on whether the right
    to retain use of the licensed technology was a substantial right retained by the
    licensee or essentially meaningless, as contended by Rad Source.
    In sum, we conclude that Florida law does not recognize a “bright-line rule”
    to distinguish between an assignment and a sublicense because numerous other
    factors, which must be evaluated on a case-by-case basis, are relevant to this
    - 24 -
    determination. We observe that, in this case, the federal district court, applying
    federal cases that in this context are consistent with Florida law, concluded that the
    transfer from Nordion to Best was an assignment because, “[b]ased on the
    evidence presented at trial, it is apparent that the parties did not intend that the
    sublicensing rights—in relation to the assignment clause—permit a situation where
    the License Agreement could be assigned by sublicense if a party reasonabl[y]
    withheld consent to the assignment.” MDS 
    (Canada), 822 F. Supp. 2d at 1310
    -11.
    Similarly, the Eleventh Circuit, although not reaching this issue, described
    Nordion’s retention of a one-day reversionary interest as “inconsequential.” MDS
    
    (Canada), 720 F.3d at 855
    .
    The resolution of the ultimate issue as to whether Nordion’s transfer to Best
    constituted an assignment or a sublicense based on the factors we have set forth
    rests on facts in the record that we decline to evaluate in answering the certified
    question. Rather, we conclude that in this case, the federal courts should make that
    ultimate determination.6
    CONCLUSION
    6. We also decline to address the issue, suggested in a footnote of the
    Eleventh Circuit’s opinion, of whether the contract between Nordion and Best was
    an equitable assignment. See MDS 
    (Canada), 720 F.3d at 856
    n.10. As
    acknowledged by the Eleventh Circuit, no party in this case previously raised the
    issue of an equitable assignment, and this doctrine is, in any event, outside the
    scope of the certified question.
    - 25 -
    For the reasons explained in this opinion, we conclude that under Florida
    law, there is no “bright-line rule” that distinguishes an assignment of a license
    agreement from a sublicense. Instead, this case-by-case determination requires
    courts to consider numerous factors, including the language of the license
    agreement and its subject matter, the substance of the interest that was actually
    transferred by the licensee, and whether the licensee retained any substantial rights
    in the license agreement. We therefore answer the rephrased certified question in
    the negative and return this case to the Eleventh Circuit to apply our legal holding
    to the facts of this case.
    It is so ordered.
    LABARGA, C.J., and QUINCE, POLSTON, and PERRY, JJ., concur.
    LEWIS and CANADY, JJ., concur in result.
    Certified Question of Law from the United States Court of Appeals for the
    Eleventh Circuit - Case No. 11-15145
    Charlie C.J. Lee of Moore & Lee, LLP, Ft. Lauderdale; and Robert M. Moore,
    Kristen A. Bennett, and Richard O. Wolf, of Moore & Lee, LLP, McLean,
    Virginia,
    for Appellants
    Andrew R. Spector of Spector Rubin, P.A., Miami, Florida; and Scott E. Taylor,
    Richard A. Mitchell, and Anuj Desai of Arnall Golden Gregory LLP, Atlanta,
    Georgia,
    for Appellee
    - 26 -