Mass Eye and Ear Inf v. QLT Phototherapeutic ( 2005 )


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  •           United States Court of Appeals
    For the First Circuit
    Nos. 03-1682
    03-1683
    03-1725
    MASSACHUSETTS EYE AND EAR INFIRMARY,
    Plaintiff/Counterclaim Defendant, Appellant/Cross-Appellee,
    v.
    QLT PHOTOTHERAPEUTICS, INC.,
    Defendant.
    QLT, INC.,
    Counterclaim Plaintiff, Appellee/Cross-Appellant,
    v.
    MASSACHUSETTS EYE AND EAR INFIRMARY,
    EVANGELOS S. GRAGOUDAS, M.D., JOAN W. MILLER, M.D.,
    Counterclaim Defendants, Appellants/Cross-Appellees.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Joseph L. Tauro, U.S. District Judge]
    Before
    Torruella, Circuit Judge,
    Gibson,* Senior Circuit Judge,
    and Lipez, Circuit Judge.
    Kenneth B. Herman, with whom James F. Haley, Jr., Christopher
    J. Harnett, Gerald J. Flattmann, John P. Hanish, Bindu Donovan,
    *
    Hon. John   R.    Gibson,   of   the   Eighth   Circuit,   sitting   by
    designation.
    Fish & Neave, Christine M. Roach, M. Ellen Carpenter and Roach &
    Carpenter PC, were on brief, for appellants.
    Donald R. Ware, with whom Barbara A. Fiacco, Jessica M.
    Silbey, Mark A. Reilly and Foley Hoag LLP, were on brief, for
    appellee/cross-appellant.
    June 16, 2005
    -2-
    TORRUELLA, Circuit Judge.            The noble pursuit of curative
    technologies birthed Visudyne, a drug that treats the leading cause
    of vision loss in people over age fifty.              That success involved the
    efforts   of      multiple       institutions,     and    the   common      drive      for
    financial returns now brings us a dispute over rights to the income
    stream of the fastest growing ophthalmic drug in history.
    The entire range of claims articulated by plaintiff-
    appellant was dismissed by the district court on summary judgment.
    The bulk of the opinion that follows consists of our de novo review
    of these dismissals.             We must also address defendant-appellee's
    cross-appeal of several discovery-related rulings.                         Following a
    review of the factual background, considered in the light most
    favorable to the appellant, we will begin our analysis.
    I.    Factual Background
    A.    Age-Related Macular Degeneration
    Age-related         macular   degeneration     (AMD)     is    an    ocular
    disease that is the predominant cause of vision loss in people over
    age fifty.     The illness takes two forms: "wet" and "dry."                     The wet
    form, though only accounting for ten percent of the cases of age-
    related macular degeneration, leads to the debilitating condition
    known as choroidal neovascularization ("CNV" or "neovasculature"),
    responsible       for   ninety     percent   of   cases    of   AMD   vision          loss.
    Neovasculature          refers     to   conditions       characterized           by     the
    proliferation of unwanted blood vessels.
    -3-
    In 1989, several researchers at Massachusetts General
    Hospital's ("MGH") Wellman Laboratories of Photomedicine began
    investigating the use of photosensitive drugs to treat eye diseases
    such as AMD involving neovasculature.              In March 1991, the MGH
    researchers      met   with    Dr.     Julia     Levy     of     appellee    QLT
    Phototherapeutic ("QLT") to discuss the possibility of utilizing
    benzoporphin derivatives ("BPD" or "derivatives") developed by QLT
    for the treatment of AMD.         Levy agreed to provide MGH the BPD
    needed for research trials.
    The Massachusetts Eye and Ear Infirmary ("MEEI" or "the
    Infirmary"), a medical institution located next to, but distinct
    from, MGH, also sought out QLT's BPD for photodynamic therapy
    research.    Dr. Joan Miller joined the Infirmary in the fall of 1991
    and soon proposed conducting studies using BPD on monkeys.                    In
    March 1992, Miller applied to MEEI to investigate the use of BPD to
    treat neovasculature.       Pursuant to Dr. Miller's application, MEEI
    and QLT signed a material transfer agreement ("MTA") in which MEEI
    would receive BPD at no cost in exchange for providing QLT the
    results     of   Miller's   pre-clinical       studies    for    use   in   QLT's
    regulatory filings and patent disclosures.
    In September 1992, following their successful monkey
    trials,   which    demonstrated      the   potential     use    of   photodynamic
    therapy with BPD, Dr. Miller and her MEEI colleague, Dr. Gragoudas,
    presented their data confidentially to QLT representatives visiting
    -4-
    Boston.    Within the next two years, MEEI and QLT entered into two
    more material transfer agreements of similar tenor.
    B.    Confidential Disclosure Agreement
    QLT    had    interest       in    commercial      applications   of   the
    Infirmary's experimental monkey trials and, in May 1993, QLT and
    Dr.   Miller     entered      into   a    Confidential         Disclosure   Agreement
    ("CDA").    As part of this agreement, QLT promised "not to use the
    Confidential Information for any purpose other than the evaluation
    of Products under the terms of this Agreement" and "to maintain
    Confidential Information in confidence."                   The parties agreed that
    "misuse or improper disclosure of Confidential Information would
    irreparably harm the business of the disclosing party or that
    party's affiliates."           Pursuant to the CDA, Miller continued to
    provide MEEI's confidential research results to QLT, including
    results of MEEI research not funded by QLT.
    In July 1993, at Dr. Miller's request, QLT agreed to fund
    further experiments by the Infirmary involving the treatment of
    neovasculature in monkeys with the derivatives.                      The results of
    these studies, as well as other studies not funded by QLT, were
    shared    with    QLT    in   November        1994,   in   a   report   entitled   the
    Preclinical BPD-MA Pharmacology Study for Macular Degeneration
    ("Bolus Study").
    -5-
    C.   QLT Partnership with CIBA Vision
    In late 1993, QLT contacted the company CIBA Vision1 to
    commercialize the use of photodynamic therapies with BPD to treat
    age-related macular degeneration.      QLT provided CIBA Vision with
    MEEI's confidential research results without first informing MEEI.
    In February 1994, CIBA Vision sought full access to Dr. Miller's
    research results to pursue a "high potential opportunity."       QLT
    agreed to share with CIBA Vision the "plans and results of our
    ocular programme," which included Dr. Miller's research.
    Dr. Miller learned of QLT's negotiations with CIBA Vision
    in the Spring of 1994.    In March, she expressed concern about the
    confidentiality of MEEI's research results to Julia Levy and Edwin
    Levy of QLT, who assured her that QLT had not disclosed and would
    not disclose in the future any of MEEI's trade secret information.
    Dr. Miller then flew to Switzerland "to get CIBA Vision excited in
    the technology," but during that meeting, and subsequent meetings
    with CIBA Vision representatives in July and October of 1994 she
    presented only summaries of her research.
    On May 31, 1994, CIBA Vision and QLT executed a Letter of
    Intent to enter into a strategic partnership for commercializing
    the use of photodynamic therapy to treat neovasculature arising
    from age-related macular degeneration.    The Letter recognized that
    QLT had "significant non-clinical evidence" -- some of which came
    1
    CIBA Vision is today known as Novartis Ophthalmics, Inc.
    -6-
    from Miller's research -- showing the success of the therapy for
    this application.      The Letter indicated that "[e]ach party will
    manage the patent portfolio in collaboration with the other party."
    QLT announced the partnership to the public and MEEI announced
    that:
    Researchers   at    [MEEI]    in    Boston   are
    participating in a joint worldwide project
    with [QLT] and CIBA . . . to develop
    photodynamic therapy, a potential treatment
    for   certain   eye   diseases.        Infirmary
    researchers,   since   1992,    have   performed
    pre-clinical studies, in collaboration with
    Wellman   Laboratories,    using    Benzoprophin
    derivative      (BPD),       a     proprietar y
    light-activated drug developed by [QLT].
    Clinical trials testing the treatment on humans began in 1995, and
    the Infirmary was one of several sites performing the trials under
    a written agreement with QLT.      MEEI was paid more than one million
    dollars for participation in the trials and for the resulting
    clinical data.
    On   February   6,    1995,   QLT    and   CIBA   Vision      signed   a
    definitive agreement to pursue worldwide joint development and
    commercialization of photo-dynamic therapy for the treatment of
    choroidal neovasculature.        The partnership aimed to obtain FDA
    approval for its treatment, tradenamed Visudyne, in April 2000.
    Sales outside    the   United   States   began       in   1999,   and   Visudyne
    received FDA approval in April 2000.          As of February 2002, over two
    hundred twenty million dollars' worth of Visudyne had been sold
    worldwide.
    -7-
    D.   Patent Applications
    Prior to QLT's partnering with CIBA Vision, in March
    1994, Dr. Miller approached QLT about pursuing a patent application
    for the treatment.      QLT agreed and suggested that Kate Murashige,
    its    long-standing    patent     attorney,        prepare    the   application.
    Relying on information provided by Miller, Murashige prepared a
    patent   application     with     serial      number    08/209,473    ("the       '473
    application")    and    filed     it   on   March     14,   1994.     The    claimed
    invention applied to methods for treating choroidal neovasculature
    with photodynamic therapy using BPD; the named inventors included
    only MEEI's Drs. Miller and Gragoudas and another MEEI employee,
    Lucy Young.
    Even though it was not claiming co-inventorship of the
    '473   application,     QLT     confirmed      that    it   would    pay    for     the
    preparation of the application. Murashige told MEEI that "QLT does
    not see itself as a participant in the invention other than as a
    supplier of     the    material    BPD,"      and   "the    assignment      would    be
    entirely to MEEI."
    Within months of the '473 filing, however, QLT changed
    its approach to the patent strategy.                On behalf of QLT, Murashige
    proposed to MEEI that the '473 application could be improved upon
    by modifying the scope of the patent claims. Murashige argued that
    it would strengthen the application to include methods of treating
    CNV with photo-dynamic therapy using liposomal formulations of BPD.
    -8-
    Since QLT's Dr. Levy and the MGH inventors had contributed to the
    invention of this form of treatment, the addition of these claims
    to the application would make them co-inventors.              QLT appreciated
    the legal significance of the amplification of inventorship in the
    '591 application.       Jennifer Kaufman-Shaw, QLT's in-house counsel,
    wrote to CIBA Vision that:
    at the time the invention was made, there was
    no contractual agreement in place whereby QLT
    would be entitled to ownership of the
    invention.   Therefore QLT claims ownership
    only through Dr. Julia Levy . . . . If Dr.
    Levy were not an inventor, QLT would have no
    rights to the patent.
    Thus, Murashige convened the three institutions -- QLT, MEEI, and
    MGH -- and requested that MEEI and MGH retain their own patent
    counsel.
    Implementing the proposal entailed a "continuation-in-
    part   application,"      with   serial       number   08/390,591   (the    '591
    application).     At the same time, Murashige removed from the '473
    applications those claims directed to methods of treating unwanted
    choroidal    neovasculature      with    photodynamic     therapy   using    the
    benzoporhin derivatives.         Those claims were joined to the '591
    application.
    After receiving assurances that MEEI would receive fair
    compensation for its contributions, the MEEI inventors consented to
    the    changes,   and     Murashige     filed    the   '591   application      on
    February    17,   1995.     MEEI's      Miller   and   Gragoudas    executed    a
    -9-
    "Combined Declaration of Inventorship and Power of Attorney for
    Continuation-in-Part Application," affirming that they were joint
    inventors along with the others of those inventions claimed in the
    '591 application.      Drs. Miller and Gragoudas maintained that they
    signed the Declaration of Inventorship and Power of Attorney with
    (1)   the   expectation      that     the   proper     inventorship       would    be
    determined once final claims were allowed, and (2) in consideration
    for   QLT's      express    promise    that     MEEI   would      be     compensated
    appropriately for Drs. Miller and Gragoudas's contributions through
    a license agreement.
    On August 25, 1998, the '591 application issued as U.S.
    Patent 5,798,349 (the '349 patent).               Drs. Miller and Gragoudas
    assigned their rights as inventors to the Infirmary, and Drs. Hasan
    and Schmidt-Erfurth         assigned    their    rights      to   MGH.     Dr.    Levy
    assigned    her    rights    to     QLT.      Among    the    assignees      of    the
    inventorship of the '349 patent, QLT is distinguished by its
    ownership of the patents on the benzoporphin derivatives integral
    to the invented treatment. This ownership means that QLT alone can
    independently exploit the rights of the '349 patent.
    E.    Licensing Negotiations
    In December 1995, QLT had signed a letter of intent to
    negotiate exclusive licenses of MEEI's and MGH's co-ownership
    rights in any patent that issued from the pending '591 application.
    Such a license would prevent MGH or MEEI from licensing their
    -10-
    rights under a patent issuing from the '591 application to a
    competitor of QLT.      According to the letter, "QLT does intend to
    negotiate in good faith with MEEI/MGH and other assignees to come
    to an agreement on reasonable terms and royalty rates which will be
    consistent with industry standards under similar circumstances."
    In the same letter, QLT indicated "its intent to negotiate with the
    MEEI/MGH for an option to license the technology which is the
    subject of the ['473 application]."         Negotiations would commence,
    according to QLT, once a patent issued and the feasibility of the
    invention was proven.
    MEEI responded in February 1996 that the Letter of Intent
    "is insufficient in that it does not address the issue of how the
    Infirmary will participate in the licensing or transferring of MEEI
    technology by QLT to third parties."           MEEI also accused QLT of
    entering into an agreement with CIBA Vision "using, in part,
    technology that was developed . . . at the Infirmary."                   MEEI
    concluded, "If that is untrue, please advise us.          If that is true,
    our position is that the Infirmary should be a party to that
    agreement   as   well   as   any   future   agreements   relative   to   that
    technology."     QLT did not respond to this letter.
    II.   QLT's Cross-Appeal
    The above narrative anticipates the disposition of the
    cross-appeal, as the picture we have painted includes information
    -11-
    that QLT wished never to disclose.2           Because QLT has challenged a
    number of evidentiary rulings, we must explain which evidence we
    find properly before us.
    QLT contends that the district court erroneously ordered
    the production     of   certain    attorney-client       communications     with
    Murashige and other attorneys of her firm.                The district court
    found that QLT met its burden of establishing the prima facie
    applicability      of    the      attorney-client        privilege    to     the
    communications in question.         See Mass. Eye & Ear Infirmary v. QLT
    Phototherapeutics, Inc., 
    167 F. Supp. 2d 108
    , 115 (D. Mass. 2001)
    (accepting report and recommendation of discovery master).                  Such
    communications are privileged unless an exception –- here, the
    common-interest exception -- applies.             The party challenging the
    privilege    carries     the      burden     of    establishing      that    any
    communications are discoverable.            FDIC v. Ogden Corp., 
    202 F.3d 454
    , 460 (1st Cir. 2000).      The common-interest exception permits a
    party access to his joint-client's communications with the shared
    counsel.     The   district    court       held   that   the   common-interest
    exception applied, within a specified time frame and as to certain
    2
    We note that the existence of MEEI and QLT's common-interest
    does not abrogate the attorney-client privilege vis-à-vis the
    general public.    However, nearly all confidential information
    divulged in this opinion has long been available to the public in
    the district court discovery opinion of April 13, 2001. Mass. Eye
    & Ear Infirmary v. QLT Phototherapeutics, Inc., 
    167 F. Supp. 2d 108
    , 110-13. Moreover, we have taken care to recount only those
    communications essential to the issues before us, issues that will
    also be at the heart of the ongoing litigation.
    -12-
    matters, thereby granting, in part, MEEI's motion for production of
    certain documents.    Mass. Eye & Ear Infirmary, 
    167 F. Supp. 2d at 127-28
    .
    We disturb a district court's discovery management "only
    upon a clear showing of manifest injustice, that is, where the
    lower court's discovery order was plainly wrong and resulted in
    substantial prejudice to the aggrieved party."        Mack v. Great Atl.
    & Pac. Tea Co., 
    871 F.2d 179
    , 186 (1st Cir. 1989).       QLT invites us
    to conduct a plenary review of the relevant orders, arguing that
    whether an exception to the attorney-client privilege applies is a
    question of law that deserves de novo review, citing Cavallaro v.
    United States, 
    284 F.3d 236
    , 245 (1st Cir. 2002).         The authority
    QLT cites, however, specifies only that the "formulation of . . .
    the . . . common-interest doctrine" should be reviewed de novo. 
    Id.
    (emphasis added).    The application of properly formulated doctrine
    to the facts remains a matter of discretion for the district court.
    
    Id.
    The   discovery   master   spelled   out   MEEI's   burden   as
    follows:
    MEEI must first establish that MEEI shared an
    attorney-client relationship with Morrison &
    Foerster [Murashige's law firm] on the
    following matters: (1) the preparation and
    prosecution of the '473 application (which
    issued   as  the   '986   patent);   (2)   the
    preparation and prosecution of the '591
    application (which issued as the '349 patent);
    (3) the licensing of the '986 patent; and (4)
    the licensing of the '349 patent.
    -13-
    Mass. Eye & Ear Infirmary, 
    167 F. Supp. 2d at 116-17
    .           QLT asserts
    that the discovery master's inquiry was inadequate as a matter of
    law because MEEI not only had to show that MEEI and QLT were joint
    clients of Morrison & Foerster, but that, in addition, they shared
    "an identical (or nearly identical) legal interest as opposed to a
    merely similar interest."     Ogden, 
    202 F.3d at 461
    .      QLT argues that
    Murashige's legal work for MEEI and QLT regarding the matters was
    not directed toward a nearly identical legal interest.                Absent
    converging interests, parties who shared an attorney ought not have
    access to their counsel's communications with the other party.
    It is peculiar to address this question first as it
    inevitably    requires   reaching   into   the   merits   we   have   yet   to
    discuss.     But the district court had to do so, as must we.               The
    irony that the ensuing discovery shows just how polarized the two
    parties' interests may already have been is not material to the
    inquiry.     "A joint attorney-client relationship remains intact
    until it is expressly terminated or until circumstances arise that
    readily imply to all the joint clients that the relationship is
    over."   Ogden, 
    202 F.3d at 463
    .      The rules of discovery therefore
    do not insulate from discovery the communications of a duplicitous
    party who feigns common interest while scheming otherwise with a
    shared, trusted advisor.
    We agree, for the reasons elaborated in the master's
    recommendation, 
    167 F. Supp. 2d at 118-23
    , that QLT and MEEI were
    -14-
    joint clients of Morrison & Foerster during at least part of
    Murashige's representation of the parties for two of the four
    matters   advanced   by   MEEI:    prosecution   of   the   '473   and   '591
    applications.   Federal patent law shapes and limits the scope of
    joint inventors' interest in the successful prosecution of a
    patent.   Until an event affirmatively terminates the joint-client
    relationship of parties relying on the same attorney for that
    prosecution, or otherwise "readily impl[ies]" that the relationship
    is over, as a matter of law, the joint relationship endures.
    Behind the scenes machinations adverse to the joint client are not
    necessarily determinative.        
    Id. at 126
    .
    The district court found an endpoint to joint-client
    status as of October 1, 1998:
    There is no evidence in the record that MEEI's
    and QLT's joint attorney-client relationship
    with Morrison & Foerster for the preparation
    and prosecution of the '473 application, or
    for the preparation and prosecution of the
    '591 application, was expressly terminated.
    However, in a letter dated October 1, 1998,
    MEEI informed QLT that MEEI had filed in the
    PTO a continuation patent application of the
    '591 application.    From the record, it is
    clear that neither QLT nor Morrison & Foerster
    was involved in the preparation or prosecution
    of the continuation patent application. Thus,
    . . . at least as of October 1, 1998, both
    MEEI and QLT understood that their respective
    legal interests in the '349 patent were no
    longer the same, or nearly the same, legal
    interest.
    . . .
    It is less clear when MEEI's and QLT's
    respective legal interests in the '986 patent
    -15-
    were no longer the same, or nearly the same,
    legal interest . . . . [However], at least as
    of October 1, 1998, both MEEI and QLT
    understood   that   their  respective   legal
    interests in the '986 patent were no longer
    the same, or nearly the same, legal interest.
    Mass. Eye & Ear Infirmary, 
    167 F. Supp. 2d at 126
    .
    QLT   does       not   disagree,     but    instead     raises   as    an
    alternative argument in its appeal that, if it shared a common
    interest with MEEI, the common interest would have terminated more
    than a year earlier, at the latest on July 31, 1997.                On that date,
    MEEI   contested,      by   letter,    QLT    and   MGH's   role    in   the     '591
    invention. The letter from MEEI's patent attorney, Edmund Pitcher,
    to Murashige, expressed MEEI's view that "the entirety of the
    subject matter of the allowed claims is the invention of MEEI
    personnel only, and that neither Dr. Levy [of QLT], nor Drs. Hasan
    or Schmidt [of MGH] made any inventive contribution."                       Pitcher
    noted that "Dr. Levy's presence on the application places MEEI in
    the uncomfortable position of being dependent on the fairness of
    QLT,   despite   its    directly      adverse   economic    interest,       in    the
    negotiation of a license agreement."                  The letter included the
    demand that QLT:
    make a concrete license proposal immediately
    and/or file a continuation application to
    permit correction of the named inventors. If
    the Infirmary and QLT cannot come to an
    agreement on a reasonable royalty rate and
    other financial terms, we are instructed to
    assume responsibility for prosecution of
    patent applications covering subject matter
    -16-
    invented without the involvement of Dr. Levy
    so as to try to preserve MEEI's rights.
    QLT responded to the district court's order with a "Motion to Amend
    Order as to Date of Termination of 'Common Interest,'" in which
    QLT, for further support, drew on letters and memoranda written by
    Murashige and employees from QLT and CIBA Vision subsequent to
    MEEI's July 31 letter.      In QLT's motion, QLT argued that MEEI's
    letter implied to QLT that it no longer shared the same interest in
    the successful prosecution of the '591 application, as MEEI was
    threatening to pursue an alternative and conflicting avenue for
    realizing   federal   protection    for    its   invention.     Thus,   QLT
    contended that "as a matter of fact, as a result of MEEI's July 31,
    1997 letter, QLT appreciated that QLT and MEEI no longer shared a
    common interest in successfully prosecuting the claimed inventions
    in" the '591 application.
    The discovery master denied the motion to move the date
    of termination of interest forward, finding, in essence, that
    MEEI's conflicting interest was only conditional.          That is to say,
    MEEI shared QLT's interest in the successful prosecution of the
    '591 application so long as a reasonable royalty rate was in the
    cards.      MEEI   argues   that   it     "was   merely   exploring   other
    possibilities of protecting its rights in the event that QLT did
    not live up to its promises once the '349 patent issued," when it
    filed the 1997 application. The discovery master discussed how the
    letters and memoranda QLT offered supported this interpretation.
    -17-
    A memorandum drafted by Jennifer Kauffman-Shaw, of QLT, to the QLT-
    CIBA Vision Joint Coordinating Committee, dated October 27, 1997,
    stated that "the Director of Intellectual Property for MEEI, Carl
    Finn, has indicated that if QLT were willing to negotiate a
    satisfactory license agreement for the patent, that MEEI would not
    pursue the inventorship issue."   The master read
    the memorandum [to] show[] that QLT understood
    that   MEEI   remained   interested   in   the
    successful    prosecution     of   the    '591
    application.      Thus,   contrary  to   QLT's
    assertions, the Kaufmann-Shaw Memorandum does
    not show that QLT implied, from the Pitcher
    Letter and the Finn Letter, that MEEI was no
    longer    interested    in    the   successful
    prosecution of the '591 application.
    May 29, 2002, slip op. at 3.3
    We believe that whether the common-interest exception
    expires upon the implication that a party has a conditionally
    adverse interest of the sort at issue here is a question of law
    over which we should exercise de novo review.       The question is
    3
    In its original objections to MEEI's motion for production, QLT
    argued that an October 21, 1997 letter by MEEI's Carl Finn to QLT's
    Dolphin terminated any common interest that might have existed.
    Its later motion to terminate the interest as of July 31, 1997
    relied upon materials released pursuant to the district court's
    order to produce privileged documents. Without entering into a
    complicated area of patent law that would require us to ascertain
    what QLT would infer from Finn's reference to a "patent application
    recently filed on behalf of MEEI," we note that the master's
    ultimate conclusion that "the October 21, 1997 letter did not
    readily imply that MEEI's and QLT's respective legal interest in
    the '591 application was no longer the same or nearly the same,
    legal interest," 
    167 F. Supp. 2d at 131
    , relies on the same
    conditional analysis we deem worthy of de novo review.
    -18-
    whether a party has "an identical (or nearly identical) legal
    interest" with another when (1) they share a nearly identical
    interest with regard to one outcome -- here successful prosecution
    of the '591 application -- which (2) depends on a condition that
    pits the parties against each other –- here, negotiation of a
    license on agreeable terms.         We believe that it does.      Our view is
    that the district court correctly focused on the continuing joint
    representation    of   the    parties     by    Murashige   as   to    the   '591
    application.     Insomuch as MEEI hoped to license its rights to the
    '591   application     to    QLT,   its   objective    depended       upon   that
    application's successful prosecution.            The fact that one potential
    outcome, announced by MEEI in the July 31, 1997 letter, would
    render its interests in the '591 application contrary to QLT's did
    not of its own force terminate their joint representation as to the
    prosecution of that application.               Rather, it begs the factual
    question of whether Murashige ceased to represent MEEI's interests
    as to that prosecution.         The discovery master noted that in a
    November 25, 1997 letter from Kaufman-Shaw of QLT to MEEI, QLT
    indicated that it "was willing to put aside the argument over
    inventorship in favor of settling upon an arrangement whereby the
    participants in the AMD/ocular neovasculature project would derive
    a benefit from their contributions."            This letter also proposed a
    meeting date between Murashige and MGH employees, CIBA Vision
    employees, QLT employees, and MEEI employees. The discovery master
    -19-
    concluded that this letter "continues to show that QLT did not
    readily [infer], from MEEI's letter by Pitcher and Finn, (1) that
    MEEI was no longer interested in the successful prosecution of the
    '591 application and, (2) as a result, that MEEI and QLT no longer
    shared the same, or nearly the same, legal interest, in the '591
    application."       Accordingly, QLT's motion to amend the date of the
    termination of the joint interest was denied.             The district court
    correctly framed the common-interest exception, and we find that it
    was within its discretion in requiring disclosure of communications
    between QLT and Murashige of Morrison & Foerster relating to the
    prosecution of the '349 and '591 applications up until October 1,
    1998.
    III.     MEEI's Appeal
    The pivotal moment that shapes nearly all of MEEI's
    claims    involves    the   filing    of   the   continuation-in-part     '591
    application, which added Dr. Julia Levy of QLT and Drs. Schmidt-
    Erforth and Hasan of MGH as inventors on the patent.            In the course
    of that switch in patent strategy, QLT made numerous assurances to
    MEEI that it would license MEEI's patent rights on reasonable
    terms.    This case is before us because no licensing agreement was
    ever reached.   MEEI claims that it was injured by this failure, and
    further    harmed    by   QLT's   unlawful   disclosure    of   MEEI's   trade
    secrets.
    -20-
    A.   Contract Claims
    1.   Breach of Contract
    The parties' disagreement regarding the existence of an
    enforceable contract is a legal one, and so this court reviews the
    question of contract formation de novo. Coady v. Ashcroft & Gerel,
    
    223 F.3d 1
    , 10 (1st Cir. 2000).       The district court determined that
    the   parties   failed   to   reach   an   agreement   whose    terms    were
    sufficiently determinate to constitute a binding contract.               MEEI
    counters that the district court erred in failing to recognize that
    a valid contract could include terms defined by industry standards.
    While there are surely some contracts in which a crucial term could
    be sufficiently defined by pegging it to industry standards, we
    agree   with    the   district   court's    conclusion   that    there    is
    insufficient evidence in the record to find that the parties had
    reached a meeting of the minds.        See, e.g., Lucey v. Hero Intern.
    Corp., 
    281 N.E.2d 266
    , 269 (Mass. 1972) (finding that "'[a]n
    agreement to enter into a contract which leaves the terms of that
    contract for future negotiation is too indefinite to be enforced'")
    (quoting Cygan v. Megathlin, 
    96 N.E.2d 702
    , 703 (Mass. 1951)).
    MEEI has also claimed breach of contract with regard to
    the May 1993 Confidential Disclosure Agreement signed by QLT and
    Dr. Miller.     We agree with the district court that MEEI was not a
    party to this agreement and that there is no evidence that Miller
    was acting as an agent of MEEI.         Furthermore, MEEI does not fall
    -21-
    within the limited class of third party beneficiaries who can
    enforce   a    contract    to    which    they      are   not    a   party.    Under
    Massachusetts      law,   in    order    for    a   third   party     to   enforce   a
    contract, "[i]t must appear from 'the language and circumstances of
    the contract' that the parties to the contract 'clear[ly] and
    definite[ly]'      intended     the     beneficiaries       to   benefit    from   the
    promised performance."           Miller v. Mooney, 
    725 N.E.2d 545
    , 550
    (Mass. 2000) (quoting Anderson v. Fox Hill Vill. Homeowners Corp.,
    
    676 N.E.2d 821
    , 822 (Mass. 1997)).              Nothing in the language of the
    Confidential Disclosure Agreement indicates that MEEI was meant to
    be either a party or a third party beneficiary.                  QLT was listed as
    a party, and a vice president of the company signed for QLT.                         In
    contrast, Dr. Miller signed only in her personal capacity without
    reference to MEEI.        Furthermore, the mere fact that MEEI would
    likely benefit from such an agreement does not, by itself, show
    that MEEI was an intended rather than an incidental beneficiary.
    See Miller, 725 N.E.2d at 550 (citing Restatement (2d) of Contracts
    § 302 (1981)).        Thus, MEEI cannot pursue a claim for breach of
    contract as a third party beneficiary based on the Confidential
    Disclosure Agreement.
    2.   Breach of Implied Contract
    We construe MEEI's breach of implied contract claim to be
    a claim of contract implied-in-fact rather than contract implied-
    in-law.   Although both causes of action exist in Massachusetts,
    -22-
    MEEI has argued principally that it reached an actual, enforceable
    agreement with QLT that was implied by the dealings of the two
    parties.          MEEI's   implied-in-law         oriented      arguments      will   be
    addressed in this court's analysis of the unjust enrichment claim.
    See 1 Richard A. Lord, Williston on Contracts § 1:6 (4th ed. 2004).
    "A contract implied in fact requires the same elements as
    an express contract and differs only in the method of expressing
    mutual   assent."          6    William   Meade     Fletcher     et     al.,   Fletcher
    Cyclopedia of the Law of Private Corporations § 2580 (perm. ed.
    rev. vol. 2004). Thus, MEEI's implied contract claim fails for the
    same reason we have rejected its express contract claim -- failure
    to reach agreement on the basic terms of the contract.                          In the
    prototypical        implied      contract      case,    the     terms    are    already
    sufficiently clear, and the court looks to the actions of the
    parties only to determine whether their actions indicate that they,
    in fact, agreed on those terms.                However, in this case, where the
    terms proposed by each side remain at odds, searching the actions
    of the parties for indicia of consent becomes a fruitless exercise.
    Without agreement on the essential terms of the agreement, MEEI's
    implied contract claim gets no further than does its express
    contract claim.
    3.    Breach of Covenant of Good Faith and Fair Dealing
    Having concluded that no contract exists, there can be no
    derivative    implied          covenant   of     good   faith    and    fair    dealing
    -23-
    applicable to these parties.            Under Massachusetts law, "[t]he
    covenant of good faith and fair dealing is implied in every
    contract."     UNO Rests., Inc. v. Boston Kenmore Realty Corp., 
    805 N.E.2d 957
    , 964 (Mass. 2004).           "The covenant may not, however,
    create rights and duties not otherwise provided for in the existing
    contractual relationship, as the purpose of the covenant is to
    guarantee that the parties remain faithful to the intended and
    agreed expectations of the parties in their performance."          
    Id.
       In
    other words, the implied covenant of good faith and fair dealing
    governs conduct of parties after they have entered into a contract;
    without a contract, there is no covenant to be breached.         Where, as
    here, the parties have not yet reached a binding agreement, there
    is no duty to negotiate in good faith.           See Levenson v. L.M.I.
    Realty Corp., 
    575 N.E.2d 370
    , 372 (Mass. App. Ct. 1991) (rejecting
    the argument that where defendant stopped short of binding himself
    to a contract he nevertheless had a duty to negotiate the terms in
    good faith).
    B.    Conversion and Misrepresentation Claims
    1.    Conversion
    MEEI    claims   that   QLT    converted   MEEI's   intellectual
    property rights in the invention of the photodynamic therapy "by
    causing MEEI to file a joint patent application with MGH and QLT so
    that a patent issued would name employees of all these institutions
    as inventors."     "Conversion requires the exercise of dominion or
    -24-
    control over the personal property of another."                Third Nat'l Bank
    of Hampden Cty. v. Cont'l Ins. Co., 
    446 N.E.2d 380
    , 383 (Mass.
    1983).     However, MEEI agreed to the filing of the joint patent
    application.     From the moment QLT became a co-inventor of the '349
    patent, it too had full and equal rights to exploit the patented
    intellectual     property.      Under   a       more    refined   statement   of
    Massachusetts law, only a defendant that "wrongfully exercises acts
    of ownership" has committed conversion.                In re Halmar Distribs.,
    Inc., 
    968 F.2d 121
    , 129 (1st Cir. 1992) (emphasis added) (internal
    citation omitted).      Since QLT jointly owned the property at issue
    and since it did nothing to prevent MEEI from exercising its own
    rights in the property, QLT did not "wrongfully exercise acts of
    ownership," 
    id.,
     and thus, no conversion occurred.                Hence, it is
    unnecessary for us to address the district court's analysis of
    whether intangible property, such as patent rights, can be the
    subject of a conversion claim.
    2.   Misrepresentation
    MEEI claims that QLT falsely represented to MEEI that
    MEEI would be adequately compensated for its role in the inventions
    included    in   the   '349   patent.      In    order    to   succeed   on   its
    misrepresentation claims, MEEI must show that QLT did not intend to
    comply with these representations at the time they were made.                 See
    Doyle & H.P. Leasing, Inc. v. Hasbro, Inc., 
    103 F.3d 186
    , 194 (1st
    Cir. 1996) ("plaintiffs must allege (1) that the statement was
    -25-
    knowingly false; (2) that [defendants] made the false statement
    with the intent to deceive; (3) that the statement was material to
    the plaintiffs' decision . . . ; (4) that the plaintiffs reasonably
    relied on the statement; and (5) that the plaintiffs were injured
    as a result of their reliance") (citations omitted).               Since MEEI
    does not provide sufficient evidence for a reasonable jury to draw
    this conclusion, we affirm the district court's grant of summary
    judgment.
    C.     MEEI's Motion to Amend
    "We review the denial of a motion to amend under Rule
    15(a) for an abuse of discretion, and we defer to the district
    court if any adequate reason for the denial is apparent on the
    record."    Steir v. Girl Scouts of the USA, 
    383 F.3d 7
    , 12 (1st Cir.
    2004) (internal quotations omitted).              In the instant case, we
    cannot say that the district court abused its discretion in denying
    MEEI's    motion    to   amend   its   complaint    concerning    its   unjust
    enrichment claim and to include a claim of promissory estoppel.
    MEEI made its motion to amend more than two years after
    filing the complaint, after the court had entered summary judgment
    for QLT on Counts I-IV of MEEI's complaint and the parties had
    fully briefed summary judgment arguments on the remaining four
    counts.     "Where the motion to amend is filed after the opposing
    party has    timely      moved   for   summary   judgment,   a   plaintiff   is
    required to show 'substantial and convincing evidence' to justify
    -26-
    a belated attempt to amend a complaint." 
    Id.
     (quoting Resolution
    Trust Corp. v. Gold, 
    30 F.3d 251
    , 253 (1st Cir. 1994)).           The
    district court did not abuse its discretion in determining that
    MEEI has failed to meet its burden of showing "some valid reason
    for [its] neglect and delay."4       Acosta-Mestre v. Hilton Int'l of
    Puerto Rico, Inc., 
    156 F.3d 49
    , 52-53 (1st Cir. 1998) (internal
    quotations omitted). Although the summary judgment motions already
    filed necessarily did not apply to MEEI's newly proposed promissory
    estoppel theory, given the undue delay in raising this theory, the
    district court acted within its discretion in denying MEEI's motion
    to amend.
    D.   Unjust Enrichment
    The district court believed that MEEI's unjust enrichment
    claim "distill[ed] into a disagreement over the inventorship in the
    '349 patent."     Based on that premise, the district court reasoned
    that MEEI could not use a Massachusetts unjust enrichment claim to
    circumvent federal patent law, and accordingly, granted summary
    judgment to QLT.       We find, however, that the district court
    4
    MEEI points to Corey v. Look as an instance where this court
    allowed the plaintiff to amend a complaint despite the fact that
    the "motion to amend came 15 months after the Authority's motion to
    dismiss." 
    641 F.2d 32
    , 38 (1st Cir. 1981). In that case, however,
    the plaintiff sought only to incorporate facts in the complaint
    that had been discovered from interrogatories. 
    Id.
     Here, plaintiff
    seeks to add an entirely new legal theory. Furthermore, in Carey,
    we decided only that it would have been within the district court's
    discretion to allow amendment, not, as MEEI's urges here, that the
    district court abused its discretion by denying the amendment. 
    Id.
    -27-
    misinterpreted MEEI's unjust enrichment claim, and in light of our
    interpretation       of    the    claim,      we   find     summary   judgment
    inappropriate.
    While      the   proper      inventorship    of   either    the    '473
    application or the '591 application is indeed a non-negotiable
    question of federal law, the question of which application to
    prosecute was a choice available to the parties.               Under the U.S.
    patent scheme, inventors have discretion to articulate the scope of
    their patent claims.        Donald S. Chisum, 3-8 Chisum on Patents,
    § 8.06[4], at 8-247 (2003) ("An applicant may present more than one
    claim and is afforded reasonable latitude in varying the scope and
    terminology   with    which      he   defines   his   invention.").         MEEI's
    original '473 application's primary claim involved three main green
    porphyrin-based methods: a "method to treat conditions of the eye
    characterized by unwanted neovasculature" (claim 1); a "method to
    treat pigmented tumors in the eye" (claim 10); and a "method to
    observe the condition of blood vessels in the eye" (claim 19).                 The
    three methods had much in common: each claim involved administering
    green porphyrin, which would then localize in the blood vessels in
    the eye; the diagnostic method simply involved observing the
    vessels, and the two treatment methods involved irradiating the
    neovasculature or tumor with light.             Furthermore, each method had
    an associated but separate claim that specified that "said green
    porphyrin is contained in a liposomal preparation" (claims 7, 16,
    -28-
    and 24).     Based on these claims, Murashige explained in March 1994
    that "QLT does not see itself as a participant in the invention
    other than as a supplier of the material BPD."
    In   December      1994,   Murashige      suggested    substantially
    changing the scope and inventorship of the '473 application.
    First, she recommended spinning off the diagnostic method as a
    separate patent which would be "properly assignable solely to
    MEEI."      Second, she recommended combining the separately stated
    methods for treatment of neovasculature (claim 1) and treatment of
    pigmented tumors (claim 10) into a single method.                   The goal was to
    "be able to claim treating conditions of the eye more broadly,"
    i.e., expand the scope of the patent.                    In order to do this,
    however, it was necessary to "introduce the limitation of using the
    green      porphyrin   in    a   liposomal      composition."        To    this   end,
    Murashige proposed a modified claim 1 that claimed "administering
    . . . green porphyrin in a liposomal composition."                    As Murashige
    acknowledged, that "is substantially the same as claim 1 in the
    original case except that the limitation of using a liposomal
    composition has been included."
    Murashige explained the significance of this proposal.
    On   the    one    hand,    by   broadening     claim    1   "to   claim    treating
    conditions of the eye more broadly," the patent, if granted, would
    have "potentially broader coverage than contemplated [earlier]."
    But the only way to justify these broad claims was to "introduce
    -29-
    the   limitation       of   using     the    green   porphyrin      in   a     liposomal
    composition," which, Murashige explained, was "a liberating device,
    allowing us to claim more broadly."
    However, this change to claim 1 broadened not just
    coverage    of    potential      eye   treatments,      but       also   the    list   of
    inventors.       Murashige explained that "if we include conditions of
    the eye generally using liposomal compositions, . . . a larger
    circle of inventors would be included both because of this greater
    breadth    and    by   virtue    of    the    necessity      to    supply    the     green
    porphyrin in liposomes.             It then appears that the inventorship
    would properly include . . . Julia Levy . . . ."                     In other words,
    the very aspect of the application that was "a liberating device,
    allowing [the inventors] to claim more broadly" also happened to be
    the aspect of the revised application that would require adding Dr.
    Levy as an inventor.         (Conversely, had liposomal preparations not
    been claimed at all, arguably the patent would be less valuable,
    but Dr. Levy might not be an inventor.)                      Adding Dr. Levy, of
    course, would give QLT full co-ownership rights to exploit the
    patent.    Thus, QLT presented MEEI with a second viable formulation
    of its patent application: it asked MEEI to change the scope of its
    patent     application      to      QLT's     benefit   in    exchange         for    fair
    compensation.5
    5
    At times, both parties have disputed the inventor status of the
    other party.   QLT has questioned MEEI's exclusive role in the
    claims listed in the '473 application, and MEEI has challenged
    -30-
    MEEI already possessed a valid, and seemingly defensible,
    patent application, when QLT sought MEEI's assent to replace the
    '473 application with the '591 application.6      QLT acknowledged that
    the patent as MEEI envisioned it (without Levy and her claims)
    would be difficult to challenge on grounds of either obviousness or
    noninventorship. Nevertheless, QLT argued that the patent could be
    made stronger -- in some ways both broader and more defensible --
    by changing the scope of the patent and adding the additional
    inventors who participated in the new claims.       The addition of QLT
    inventor   Dr.   Levy,   however,   would   drastically   reduce   MEEI's
    potential profits from the patent.          If MEEI agreed to the '591
    application with the additional inventors, QLT would no longer need
    a license in order to commercialize the photo-dynamic therapy that
    became known as Visudyne.       Since QLT already owned the other
    QLT's participation in the claims added in the '591 application.
    However, we find that at this summary judgment stage, the record
    does not contradict the listed inventors on either application, and
    we assume that both applications were valid.
    6
    The '591 application (later approved as the '349 patent) also
    added Drs. Schmidt-Erfurth and Hasan of MGH. It is appropriate to
    note here that, in addition to their primary arguments about
    federal preemption, the district court and QLT rely on the fact
    that QLT also purchased a license to MGH's co-ownership rights in
    the '349 patent. Given this license, QLT points out that it would
    still have full rights to exploit the patent even if QLT, itself,
    had not played any role in the inventorship. This argument, though,
    misses the mark entirely, as it ignores the fact that MGH, like
    QLT, only has rights to the core inventions covered by the original
    '473 patent because MEEI agreed to the later '591 application.
    QLT's redundant licensing scheme with MGH in no way undermines
    MEEI's argument that it consented to proceed with the '591
    application on based on QLT's assurances of fair compensation.
    -31-
    required patent for the necessary BPD, QLT's inclusion in the new
    '591   application      enabled    it   to     commercially   exploit    Visudyne
    without MEEI.     We note that QLT was, of course, well aware that
    securing co-inventorship would put it in this uniquely lucrative
    position, and it was QLT's attorney, Murashige, who, acting also as
    patent counsel to MEEI, spearheaded the effort to convince MEEI to
    go along with the '591 application.
    Not surprisingly, MEEI did not initially agree with this
    new approach proposed by QLT.                Attorney Murashige nevertheless
    prepared   the    '591    continuation-in-part           application,    and   MEEI
    eventually assented after being promised fair compensation for its
    contribution.     Of course, MEEI and QLT never came to an agreement
    on the critical compensation figures, and it is for that reason
    that we have affirmed summary judgment for QLT on MEEI's contract
    claims.    This inadequate meeting of the minds does not, however,
    call for summary judgment in the context of unjust enrichment.                   A
    claim of unjust enrichment is appropriate "where an agreement is
    too indefinite to be enforced . . . [or] where no contract is made
    because    each    of    the      parties      had   a    materially    different
    understanding of the terms."            1-1 Corbin on Contracts, § 1.20(b)
    (2004).    Unjust enrichment provides an equitable stopgap for
    occasional inadequacies in contractual remedies at law by mandating
    that "[a] person who has been unjustly enriched at the expense of
    another is required to make restitution to the other."                  Fox v. F &
    -32-
    J Gattozzi Corp., 
    672 N.E.2d 547
    , 552 (Mass. App. Ct. 1996)
    (quoting Restatement of Restitution § 1 (1937)).                Although QLT's
    continued   reassurances    that   it   would     pay   MEEI    royalty   rates
    "consistent with industry standards" were not specific enough to
    support MEEI's contract claims, they form a key component of MEEI's
    unjust enrichment claim and present a triable issue of fact.7
    Furthermore, this analysis of MEEI's unjust enrichment
    claim illustrates why it was not preempted by federal patent law.
    MEEI's claim is not that Dr. Levy was not a proper inventor of the
    '349 patent, but rather that QLT induced MEEI to agree to the
    change in scope of the claims, and then unjustly profited from that
    change by denying fair compensation.              In these circumstances,
    conflict    preemption,    not   the    broader     field      preemption,   is
    appropriate. See Hunter Douglas, Inc. v. Harmonic Design, 
    153 F.3d 7
    QLT argues that MEEI did not give up anything by agreeing to the
    '591 application. It contends that MEEI retained the right to file
    a continuation application in its own behalf under 
    35 U.S.C. § 120
    ,
    and in fact did exactly that by "secretly" filing continuation
    applications that claimed the full range of treatment methods as
    MEEI's sole invention. We need not address this issue because a
    claim seeking restitution for unjust enrichment does not require
    consideration. In Massachusetts, the elements of such a claim are
    "'unjust enrichment of one party and unjust detriment to the other
    party.'" Bushkin Assocs., Inc. v. Raytheon Co., 
    906 F.2d 11
    , 15
    (1st Cir. 1990) (quoting Salamon v. Terra, 
    477 N.E.2d 1029
    , 1031
    (Mass. 1985)).     Thus, MEEI need only establish that QLT was
    unjustly enriched, and that MEEI suffered an unjust detriment.
    MEEI argues that, as a result of QLT's unjust conduct during
    negotiations and/or patent prosecution, MEEI has received no
    royalties at all, and, by not having to pay those royalties, QLT
    has retained large sums that it would have had to forego if it had
    not committed that allegedly unjust conduct. If so, the elements
    of a quasi-contract claim might be established.
    -33-
    1318, 1334-35 (Fed. Cir. 1998).                 Under the conflict preemption
    standard, if the tort action is based on conduct that is not
    "protected or governed by federal patent law," then "the remedy is
    not preempted."       Id. at 1335; compare Univ. of Colo. Found., Inc.
    v.   Am.   Cyanamid    Co.,       
    196 F.3d 1366
    ,   1372    (Fed.    Cir.    1999)
    (independent    state       law   inventorship     standards         frustrate   basic
    objectives of patent law and thus entire field of inventorship is
    preempted) with       
    id. at 1373-74
     (unjust enrichment claim preempted
    only because it "hinge[d]" on a determination of inventorship).
    QLT argues that MEEI's claims are preempted by 
    35 U.S.C. § 262
    , which reads: "In the absence of any agreement to the
    contrary, each of the joint owners of a patent may make, use, offer
    to sell, or sell the patented invention within the United States,
    or import the patented invention into the United States, without
    the consent    of     and    without     accounting     to     the    other   owners."
    (Emphasis added).       QLT contends that § 262 creates a federal right
    to practice an invention without fear of suit by co-inventors,
    preempts state      law     claims      between   co-owners      on    the    basis   of
    anything    other     than    a    written      contract,      and/or    effectively
    represents a Congressional determination that any asserted wrong by
    one co-inventor against another is not "unjust" unless it violates
    such a contract.
    We recognize that the preemption issue here is close. It
    is true that allowing MEEI's claim to proceed would, to some
    -34-
    extent, impinge upon QLT's rights as a co-inventor.                    However, the
    statute itself admits of an exception to those rights when there is
    "any agreement to the contrary."        QLT suggests that this exception
    only   applies   where    there   is    a       written,    legally     enforceable
    contract.     But § 262 says no such thing.                Congress knew how to
    insist upon a contract, and even how to specify that it must be
    reduced to writing.        Cf. 
    35 U.S.C. § 261
     (holding that patent
    rights are    "assignable    in   law   by       an     instrument    in     writing")
    (emphasis    added).      However,          §    262    simply     speaks     of   "any
    agreement."      MEEI has provided evidence of an agreement with QLT
    in which QLT promised to "negotiate in good faith with MEEI . . .
    to come to an agreement on reasonable terms and royalty rates which
    will   be   consistent     with   industry             standards     under     similar
    circumstances."        We have held, supra Part III.A.1, that this
    agreement was not enforceable as a contract, because the terms are
    too indefinite.    However, if the fact-finder determines that there
    was such an agreement, it might still qualify as an "agreement"
    under § 262, and therefore form the basis for equitable relief on
    a theory of unjust enrichment without presenting any conflict with
    the allegedly preempting statute.
    We also note that, while there is no direct precedent
    concerning preemption under § 262, we may draw analogies from other
    situations where patent law preemption has been alleged.
    -35-
    First, there is precedent suggesting that a state law
    action alleging that the defendant secretly filed and received a
    patent for the plaintiff' invention, and requesting monetary or
    equitable relief but not a change to the patent itself, is not
    preempted.     See   Becher v. Contoure Labs., 
    279 U.S. 388
     (1929)
    (Holmes, J.);8 Burns v. Mass. Inst. of Tech., 
    394 F.2d 416
     (1st
    Cir. 1968) (Aldrich, C.J.);9 Laning v. Nat'l Ribbon & Carbon Paper
    8
    In Becher, an inventor employed Becher as a machinist to help
    work on his invention, under a confidentiality agreement. Becher
    secretly applied for and received a patent for the invention. The
    inventor sued in state court for breach of contract and other state
    theories, and the state court ordered a constructive trust on the
    patent rights, i.e., ordered Becher to assign the rights to the
    inventor. Becher sued in federal court to enjoin the inventor from
    further state court proceedings on the grounds of patent
    preemption. Justice Holmes held that the inventor's claims were
    not preempted:
    [The inventor]'s right was independent of and prior to
    any arising out of the patent law, and it seems a strange
    suggestion that the assertion of that right can be
    removed from the cognizance of the tribunals established
    to protect it by its opponent going into the patent
    office for a later title. It is said that to establish
    [the inventor]'s claim is to invalidate Becher's patent.
    But, even if mistakenly, the attempt was not to
    invalidate that patent but to get an assignment of it,
    and an assignment was decreed. Suits against one who has
    received a patent of land to make him a trustee for the
    plaintiff on the ground of some paramount equity are well
    known.
    
    279 U.S. at 391
    .
    9
    In Burns, the plaintiff had been negotiating with a federal
    agency regarding some unpatented inventions. The government asked
    MIT to evaluate his ideas, and Burns turned over secrets to MIT
    pursuant to a confidentiality agreement. MIT gave the government
    an unfavorable report on his ideas, but then secretly developed and
    patented them.   Burns sued for state law breach of trust. The
    -36-
    Mfg. Co., 
    125 F.2d 565
    , 566-67 (7th Cir. 1942) (action to determine
    title to assigned patent rights under state law is not preempted);
    Kleinerman v. Snitzer, 
    754 F. Supp. 1
     (D. Mass. 1990);10 Zemba v.
    Rodgers, 
    210 A.2d 95
    , 98 (N.J. Super. Ch. 1965);11 see also Corpus
    court applied the Massachusetts statute of limitations, and held
    that his claim was untimely. The court never even hinted that his
    claim was preempted.
    10
    In Kleinerman, the inventor sued in state court alleging that
    defendant Snitzer "breached the trust implied in plaintiff's
    disclosure to him of plaintiff's technology and knowingly
    misappropriated plaintiff's technology, to plaintiff's detriment,"
    and that another defendant, the patent attorney, helped Snitzer to
    do so. Id. at 1-2. The complaint sought damages, not correction
    of inventorship or invalidation of the patent. Defendants argued
    that the complaint was preempted by patent law and sought to remove
    to federal court on the basis of federal question jurisdiction.
    The court held that, since the plaintiff never obtained a patent
    for the technology he claims that he invented, he therefore was not
    seeking to enjoin a defendant from infringing on his patent, but
    rather seeking damages for common law torts. It remanded the case
    for want of federal jurisdiction. Id. at 2.
    11
    In Zemba, plaintiff and Rodgers separately invented the same
    product, then decided to jointly apply for a patent.       A patent
    attorney was consulted. Rodgers and the attorney then allegedly
    conspired to process the patent application without plaintiff, and
    to represent Rodgers as the sole inventor.         See id. at 96.
    "Rodgers falsely and fraudulently told plaintiff that the invention
    was unpatentable, that an application would be rejected, and that
    he had doubt as to whether the patent application would be
    pursued." Id. With the help of the patent attorney, Rodgers filed
    and received the patent. Plaintiff sued in state court for fraud
    and various other state law theories. Defendants argued that the
    claims were preempted by patent law and subject to exclusive
    federal jurisdiction. See id. at 97-98. The court rejected the
    claim of preemption, explaining:
    [The complaint] depends on principles of common law and
    equity governing fraud and disparagement, and plaintiff's
    rights are dependent upon such principles. Plaintiff has
    not sought a declaratory judgment to void the patent on
    the federal grounds of non-invention. Nor has he based
    -37-
    Juris 2d Patents § 315 ("[I]n the absence of any agreement to the
    contrary, each of the joint owners of a patent may make, use, offer
    to sell, or sell the patented invention . . . unless such profits
    accrue after a joint owner has procured an assignment of his
    coowner's    interest   to     himself    by   fraud.")   (emphasis    added)
    (footnotes omitted) (citing Zemba).
    Here, the allegation is that the defendant manipulated
    the plaintiff into agreeing to change the scope of the patent so as
    to include contributions made by the defendant.               MEEI has not
    provided    evidence    that    QLT's     alleged   conduct   was     actually
    fraudulent.    However, arguably, the case for preemption here is
    weaker than in the cited cases.          In the cited cases, the plaintiff
    struck at the heart of inventorship by arguing (essentially) that
    the patent was applied for fraudulently and never should have
    issued.     Here, the plaintiff argues that the defendant induced
    plaintiff to agree to a certain scope of invention in exchange for
    compensation, and then provided none.
    his claim for disparagement on the invalidity             of the
    patent. Instead, plaintiff claims ownership                of an
    interest in the patent, and demands an assignment         of that
    interest and damages resulting from slander               of his
    ownership.
    
    210 A.2d at 98
     (internal citations omitted).
    -38-
    We also draw an analogy from the doctrine of inequitable
    conduct before the Patent and Trademarks Office (PTO).12              Courts
    have distinguished state claims alleging bad faith misconduct by
    the applicant against the PTO -- which are preempted -- from state
    claims alleging bad faith misconduct occurring subsequently in the
    marketplace -- which are not.       See, e.g., Methode Elecs. Inc. v.
    Hewlett-Packard Co., 
    55 U.S.P.Q.2d 1602
    , 1604-05 (N.D. Cal. 2000)
    (finding   that   an   unjust   enrichment   claim   alleging   bad   faith
    misconduct by the applicant against the PTO was preempted because
    its "fundamental premise" was incorrect inventorship, but making
    the distinction described above, and emphasizing that "the focal
    point of the [instant case] is Methode's conduct before the PTO and
    not . . . conduct subsequent to the PTO proceedings.").         The reason
    for this distinction is instructive: claims of inequitable conduct
    before the PTO are preempted because "PTO procedures themselves
    provided a remedy for [an applicant]'s malfeasance. An additional
    state action would be an inappropriate collateral intrusion on the
    regulatory procedures of the PTO, 'under the guise of a complaint
    sounding in tort' . . . and is contrary to Congress' preemptive
    regulation in the area of patent law."         Abbott Labs. v. Brennan,
    12
    "Applicants for patents are required to prosecute patent
    applications in the PTO with candor, good faith, and honesty."
    Molins PLC v. Textron, Inc., 
    48 F.3d 1172
    , 1178 (Fed. Cir. 1995).
    "A breach of this duty constitutes inequitable conduct." 
    Id.
     If
    the conduct was sufficiently culpable, a court may declare the
    patent to be unenforceable. 
    Id.
    -39-
    
    952 F.2d 1346
    , 1357 (Fed. Cir. 1991) (internal citations omitted).
    In other words, state claims alleging misconduct before the PTO are
    preempted because federal law contains a specific remedy for just
    such misconduct.        Even then, not all state claims that implicate
    the issue of inequitable conduct before the PTO are preempted. See
    Dow Chem. Co. v. Exxon Corp., 
    139 F.3d 1470
    , 1471 (Fed. Cir. 1998)
    (state law tort claim for intentional interference with contractual
    relations that implicates patent law issue of inequitable conduct
    before PTO is not preempted by federal patent law, even if it
    requires state court to adjudicate question of federal patent law,
    provided state law cause of action includes additional elements not
    found   in    federal    patent    law   cause   of   action   and   is   not
    impermissible attempt to offer patent-like protection to subject
    matter addressed by federal law).
    Again, this precedent is not directly on point.              The
    distinction cited above is between state claims alleging misconduct
    by an applicant against the PTO (which are usually, if not always,
    preempted), and claims alleging misconduct between parties after
    the patent has issued.            Here, the claim is misconduct by an
    applicant    against     a   co-applicant   before    the   application   is
    completed.     But      misconduct between parties before the patent
    issues is more analogous to misconduct between parties after the
    patent issues than it is to misconduct by a party against the PTO.
    -40-
    Finally, we note that QLT's position, while it has the
    advantage of creating an easily manageable bright-line rule, could
    lead to injustices that Congress did not intend.              Purely as a
    hypothetical, imagine a case where the evidence clearly showed that
    the defendant deceived and manipulated a naive inventor into
    modifying the scope of the inventor's application (within the range
    of properly patentable applications) so as to force the inclusion
    of the defendant as a co-inventor.          Further suppose that the
    defendant    deflected   all   requests   for   a   legally   enforceable
    licensing contract with empty assurances of future agreements which
    it never intended to fulfill.       We cannot imagine that Congress
    intended, simply by enacting the phrase "[i]n the absence of any
    agreement to the contrary," to preclude the inventor-plaintiff from
    establishing such an agreement within the framework of an equitable
    cause of action under state law.     Conflict preemption applies only
    when "there is such a direct conflict between . . . the patent code
    and . . . [state] law that compliance with both the patent law and
    state law is a 'physical impossibility,' or . . . the state law
    'stands as an obstacle to the accomplishment and execution of the
    full purposes and objectives of Congress' in enacting" the federal
    statute. Cover v. Hydramatic Packing Co., 
    83 F.3d 1390
    , 1393 (Fed.
    Cir. 1996) (quoting Gade v. Nat'l Solid Wastes Mgmt. Ass'n, 
    505 U.S. 88
    , 98 (1992)).     We do not find such a "direct conflict" here,
    and while the present case differs from the hypothetical, the
    -41-
    differences      lie     in   the   facts    and     equities,       not   the   law    of
    preemption.
    For all these reasons, MEEI's unjust enrichment claim is
    not preempted.
    We also find that MEEI's unjust enrichment claim should
    survive summary judgment based on the allegations of QLT's misuse
    of   confidential        information.         Under    Massachusetts        law,   "[a]
    constructive trust is . . . imposed to avoid the unjust enrichment
    of one party at the expense of the other where 'information
    confidentially given or acquired was used to the advantage of the
    recipient     at    the       expense   of     the     one     who     disclosed       the
    information.'" Mass Cash Register, Inc. v. Comtrex Sys. Corp., 
    901 F. Supp. 404
    , 423 (D. Mass. 1995) (quoting John Alden Transp. Co.
    v. Arnold Bloom, 
    415 N.E.2d 250
    , 250 (Mass. App. Ct. 1981)).                           The
    facts underlying this theory will be laid out in the course of our
    subsequent trade secret claim analysis.13
    E.     Trade Secret and Unfair Trade Practices Claims
    The right to control how research is used and who is
    privy to trade secrets is crucial to protecting the economic
    interests of non-profit research institutions like MEEI, just as it
    is essential to for-profit businesses.                     Without the ability to
    guard   their      own    data,     there    would    be     fewer    incentives       for
    13
    Although MEEI cannot recover twice for the same conduct, MEEI
    should have the opportunity to prove the distinct elements of its
    unjust enrichment and trade secret claims.
    -42-
    institutions like MEEI to engage in this type of cutting-edge
    research.    The allegations before this court are that QLT was
    entrusted with the result of MEEI's research and breached that
    trust, primarily by sharing information with its partner CIBA
    Vision without authorization from MEEI.     We now consider whether
    the district court correctly found that these claims were brought
    by MEEI after the statute of limitations had already run.
    1.   Misappropriation of Trade Secrets
    MEEI claims that QLT misappropriated its trade secrets
    without MEEI's knowledge, in particular, by disclosing certain
    research results to QLT's eventual partner, CIBA Vision.       MEEI
    argues that the district court erred in concluding that MEEI's
    trade secret claim was time barred by the three-year statute of
    limitations for tort actions because, under Massachusetts law, the
    statute should have been tolled.
    Massachusetts law establishes two avenues by which the
    three-year statute of limitations that would ordinarily apply to
    MEEI's trade secret claims can be tolled. The Massachusetts common
    law "discovery rule" provides that the statute of limitations is
    tolled "until a plaintiff knows, or reasonably should have known,
    that it has been harmed or may have been harmed by the defendant's
    conduct."   Taygeta Corp. v. Varian Assocs., Inc., 
    763 N.E.2d 1053
    ,
    1063 (Mass. 2002).     "The appropriate standard to be applied when
    assessing knowledge or notice is that of a 'reasonable person in
    -43-
    the plaintiff's position.'"       
    Id.
     (citing Riley v. Presnell, 
    565 N.E.2d 780
    ,   785   (Mass.   1991)).    Thus,   under   Massachusetts'
    discovery rule, the question before the district court was when
    MEEI actually knew or should have known of QLT's misappropriations
    of its trade secrets.
    Massachusetts statutory law also grants a reprieve from
    the statute of limitations when a potential defendant fraudulently
    conceals the basis for a cause of action:
    If a person liable to a personal action
    fraudulently conceals the cause of such action
    from the knowledge of the person entitled to
    bring it, the period prior to the discovery of
    his cause of action by the person so entitled
    shall be excluded in determining the time
    limited for the commencement of the action.
    
    Mass. Gen. Laws ch. 260, § 12
     (2004).      Under this law, the statute
    of limitations "will be tolled if the wrongdoer either concealed
    the existence of a cause of action through some affirmative act
    done with intent to deceive or breached a fiduciary duty of full
    disclosure."    Stark v. Advanced Magnetics, Inc., 
    736 N.E.2d 434
    ,
    442 (Mass. App. Ct. 2000) (quotations and citations omitted). "The
    statute of limitations, however, is not tolled if the plaintiff has
    actual knowledge of the facts giving rise to his cause of action."
    
    Id.
    The district court made short work of MEEI's trade
    secrets claims by finding that MEEI had actual knowledge of its
    claims more than three years before bringing this suit on April 24,
    -44-
    2000.   Since    the   district   court    concluded   that   there   were
    sufficient facts to prove MEEI's knowledge of its claims, it did
    not need to go any further in analyzing the tolling of the trade
    secret claims under either the common law discovery rule or the
    fraudulent concealment statute.          However, we must evaluate the
    district court's factual conclusions to determine whether they
    supported summary judgment.
    a.    Review of District Court Summary Judgment Decision
    Summary judgment is appropriate when "the pleadings,
    depositions, answers to interrogatories, and admissions on file,
    together with the affidavits, if any, show that there is no genuine
    issue as to any material fact and that the moving party is entitled
    to judgment as a matter of law."         Fed. R. Civ. P. 56(c).       Since
    genuine issues of material fact remain concerning MEEI's knowledge
    of QLT's misappropriations of its trade secrets -- facts that could
    bring MEEI's claims within the statute of limitations -- we find
    that the court erred in granting summary judgment on MEEI's trade
    secret claims.
    "Our review of the district court's grant of summary
    judgment is plenary, and we read the record in the light most
    amicable to the party contesting summary judgment."            Cambridge
    Plating Co. v. Napco, Inc., 
    991 F.2d 21
    , 24 (1st Cir. 1993)
    (reversing the district court grant of summary judgment because
    material facts remained at issue where plaintiff knew it had been
    -45-
    harmed, but could not attribute it with certainty to defendant's
    actions).     Considered in the light most favorable to MEEI, neither
    the facts singled out by the district court, nor the record as a
    whole, suffice to support the district court's conclusion that MEEI
    had knowledge of trade secret misappropriations.             The district
    court based its conclusion on, inter alia, MEEI's awareness of
    QLT's partnership with CIBA Vision, Dr. Miller's statements that
    she was concerned about the confidentiality of her work, and
    Dr. Miller's learning from CIBA Vision that some of her data had
    been shared without her permission.        However, it is not enough to
    show that Dr. Miller was suspicious about what QLT might have
    disclosed. "Suspicion and knowledge are poles apart on a continuum
    of understanding," and "the [Massachusetts fraudulent concealment]
    statute itself uses the unqualified word 'knowledge' in setting
    forth   the    prescribed   state    of    a   plaintiff's   perception."
    Tracerlab, Inc. v. Indus. Nucleonics Corp., 
    313 F.2d 97
    , 102 (1st
    Cir. 1963).      We will address the question of MEEI's admitted
    knowledge of some disclosures below.
    The district court seems to have given little weight to
    MEEI's claims that QLT repeatedly reassured Miller that it was not
    disclosing any confidential information.           Rather, the district
    court found that in a 1996 letter to QLT, MEEI indicated that it
    -46-
    was already aware of its trade secrets cause of action.14                       The
    letter stated in part, "[w]e believe that you may have already
    entered into an agreement with a third party using, in part,
    technology that was developed here at the Infirmary.                     If that is
    untrue, please so advise us."            Tracerlab, 
    313 F.2d at 102
    .            QLT
    never   responded   to    the    letter.        In   our   view,    this     letter
    demonstrates    only     that     MEEI    was    aware     of    QLT's     business
    relationship with CIBA Vision and about the potential for trade
    secret misappropriation existing in that relationship.                   The letter
    makes no precise accusations and gives no indication that MEEI was
    aware of particular instances of misappropriation.
    b.   Applying Massachusetts Tolling Law
    We have held that "the Massachusetts court does not
    equate suspicion with knowledge, but is explicit in requiring
    actual knowledge, or, as an equivalent, full means of detecting the
    fraud."    
    Id.
     (internal quotation omitted).               The district court
    rejected MEEI's reliance on Tracerlab, because it found that the
    1992 letter, among other evidence, showed that MEEI actually
    believed   it    had      a     cause    of     action     for     trade     secret
    misappropriation.        The district court believed that plaintiffs
    14
    The district court also placed weight on the deposition
    testimony of MEEI's witness Lisa Petukian that Miller had said that
    some of her data had been shared with CIBA Vision. However, from
    this testimony, we do not know whether Miller knew anything about
    the scope of the misappropriations or whether they were more than
    isolated events.
    -47-
    clearly had more knowledge of QLT's misappropriations than the
    plaintiffs    had   in   Tracerlab,      where     the    court   found    that    the
    plaintiff's belief was based on "gossamer threads of speculation,
    suspicion and surmise."          
    Id. at 100
    .
    However, we find Tracerlab instructive. As in this case,
    the plaintiffs in Tracerlab knew that the defendants possessed the
    trade secrets in question.          
    Id. at 99
     ("There is no question but
    that [the     plaintiff]    was    aware    from    the    beginning      that    [the
    defendants] knew plaintiff's trade secrets" because they were
    former employees of the plaintiff.) Furthermore, in Tracerlab, the
    court found that the plaintiff was "well aware from the very outset
    that [the defendants] had gone into the [same] field and were
    producing a competitive product."              
    Id. at 100
    .        Still, in that
    case, we found that "all of this is a far different thing from
    having knowledge that the defendant had misappropriated and was
    using the self-same . . .           trade secrets . . . underl[ying] the
    present cause of action."         
    Id.
       Moreover, unlike most trade secret
    cases, during much of the time in question in this case, use of
    MEEI's trade secrets by data recipients like CIBA Vision would
    still have remained behind closed doors, as product development was
    not yet complete.        Therefore, MEEI was even less likely to become
    aware of any unauthorized disclosures.
    "Although the Massachusetts legislature has set statutory
    limitations    periods     for    various      causes     of   action[,]    .     .   .
    -48-
    determining when claims accrue 'has long been the product of
    judicial interpretation.'" Cambridge Plating Co., 
    991 F.2d at 25
    (quoting   Franklin   v.   Albert,   
    411 N.E.2d 458
       (Mass.   1980)).
    "Massachusetts courts have recognized that it would be unfair to
    begin running the statute of limitations before a plaintiff is put
    on notice that she has a claim."     
    Id.
     (citing Bowen v. Eli Lilly &
    Co., 
    557 N.E.2d 739
     (Mass. 1990)).
    Although it is true that "[t]he plaintiff need not know
    the full extent of the injury before the statute starts to run,"
    Bowen, 557 N.E.2d at 741 (emphasis added), the district court
    incorrectly expanded this principle to find that MEEI need not know
    "the full extent of its claim."      Mass. Eye & Ear Infirmary v. QLT
    Phototherapeutics, Inc., No. 00-10783, at 12 (D. Mass. Apr. 23,
    2002) (sealed memorandum in support of summary judgment).          This is
    not a case in which MEEI claims only that it did not know how much
    it had been harmed; rather, MEEI claims that it did not know that
    it had been harmed at all.
    c.   MEEI's Awareness of Some of QLT's Misappropriations
    In order for the statute of limitations to start to run,
    "an event or events [must] have occurred that are reasonably likely
    to have put the plaintiff on notice that he has been harmed."
    Stark, 736 N.E.2d at 442 (citing Bowen, 557 N.E.2d at 741).          We do
    not believe that in a complex case of this nature -- where trade
    secrets of varying importance are alleged to have been divulged
    -49-
    over a period of years -- that notice of one misappropriation can
    constitute sufficient notice to begin tolling the statute for all
    misappropriations. Although we are not prepared to state a general
    rule, in a case such as this one, a wronged party should not be
    prejudiced with regards to later torts committed against it, simply
    because a defendant started the clock running by committing similar
    acts at an earlier time. Statutes of limitations provide necessary
    closure    and   fairness   for    potential        defendants.      However,   a
    plaintiff must be able to decide when the harms it has sustained
    require bringing suit, and no defendant should be able to immunize
    itself from later, potentially graver claims, by openly engaging in
    prior, similar offenses that the future plaintiff does not believe
    warrant bringing suit.
    MEEI has not denied knowledge of some of QLT's alleged
    trade secrets misappropriations.              The record does not, however,
    indicate   that   MEEI    knew    of   all,    or    substantially    all,   such
    misappropriations.       Furthermore, MEEI's claims are strengthened by
    the existence of the Confidentiality Agreement and QLT's repeated
    assurances that its trade secrets were not being disclosed.                     To
    assume that MEEI knew the full extent of disclosure to CIBA Vision
    would be to assume that MEEI was already aware that it was on the
    verge of being cut out of any future profits from the newly
    developed photodynamic therapy. Though this may be the case, we do
    -50-
    not believe that such a factual judgment can be made at the summary
    judgment stage.
    QLT points out that MEEI does not claim that it gained
    any additional knowledge in the years prior to filing suit in 2000,
    and thus MEEI could just as easily have filed suit more than three
    years prior.     However, this fact alone is not sufficient to show
    that MEEI should have filed suit earlier.          Because of the nature of
    the claim, it is possible that some of MEEI's trade secret claims
    were only shots in the dark at the time MEEI filed its complaint,
    and that MEEI only learned of the facts substantiating some of its
    claim   after    receiving      discovery.     Although   the    fact   that   a
    plaintiff files suit is usually strong evidence that he knows the
    facts underlying each of his own claims, filing suit does not
    prove, in itself, that he has sufficient knowledge to prevent
    tolling of the statute of limitations.
    d.    Fraudulent Concealment or Breach of Fiduciary Duty
    Since the district court found that MEEI had actual
    knowledge of QLT's alleged misappropriations, it did not need to
    reach   the     question   of     whether    QLT   actively     concealed   its
    disclosures of MEEI's trade secrets.           Having found that the issue
    of MEEI's knowledge of its trade secret claims was not properly
    decided on summary judgment, we believe that MEEI's claims based on
    fraudulent concealment should also survive summary judgment.
    -51-
    Where a "defendant[] 'made representations [he] knew or
    should have known would induce the plaintiff to put off bringing
    suit and . . . the plaintiff did in fact delay in reliance on the
    representations,'" the statute of limitations is tolled.            Olsen v.
    Bell Tel. Labs., Inc., 
    445 N.E.2d 609
    , 612 (Mass. 1983) (quoting
    White v. Peabody Constr. Co., 
    434 N.E.2d 1015
    , 1023 (Mass. 1982)).
    QLT does not dispute that MEEI may have been assured by QLT that
    certain trade secrets were not disclosed. Furthermore, considering
    the evidence that QLT continued licensing negotiations at least in
    part because it feared suit by MEEI, it is reasonable at this
    summary judgment stage to assume that QLT's purpose in making
    assurances to MEEI could have been to delay a suit that would
    include trade secret claims.
    In addition, MEEI's claim that QLT owed fiduciary duties
    to MEEI has some persuasive force.           Fiduciary duties exist "when a
    party to a contract expressly repose[s] a trust or confidence in
    the   other    party"   or   "where   the    contract   or   transaction   was
    intrinsically     fiduciary    and,   therefore,    required    perfect    good
    faith." 26 Richard A. Lord, Williston on Contracts, § 69:23 (4th
    ed. 2004).      By entering into their joint research relationship,
    MEEI and QLT each put their valuable trade secrets in the others'
    hands, arguably requiring full disclosure of any misappropriation
    of those secrets.       Furthermore, in Massachusetts, if a defendant
    fails to learn of a trade secret violation due to a fiduciary's
    -52-
    failure to disclose, then plaintiffs do not have a duty to exercise
    due diligence.   Puritan Med. Ctr., Inc. v. Cashman, 
    596 N.E.2d 1004
    , 1010, n.9 (Mass. 1992).     "Once fraudulent concealment is
    established, the limitations period is tolled until plaintiffs
    actually become aware of the operative facts.    Mere suspicion of
    fraud is insufficient to end the tolling period." Compagnie de
    Reassurance d'Ile de France v. New Eng. Reins. Corp., 
    944 F. Supp. 986
    , 995 (D. Mass. 1996) (citing Tracerlab, 
    313 F.2d at 102
    ).
    Thus, if QLT owes a duty of disclosure, then QLT will be forced to
    prove that MEEI had actual knowledge of all of QLT's alleged
    misappropriations in order to prevent tolling of the statute.
    e.   MEEI's Late Addition of Trade Secret Claims
    MEEI provided no credible explanation for its delayed
    attempt to amend its complaint, and thus, we cannot say that the
    district court abused its discretion in refusing to allow MEEI to
    assert additional claims based on QLT's alleged disclosure of the
    results of the Preclinical Bolus Study and its visual acuity data.
    See, Torres-Ríos v. LPS Labs., Inc., 
    152 F.3d 11
    , 16 (1st Cir.
    1998); Hayes v. New Eng. Millwork Distribs., 
    602 F.2d 15
    , 19 (1st
    Cir. 1979).
    2.   Unfair Trade Practices
    The district court held that its "previous rulings on
    Contract and Trade Secret Claims," as well as MEEI's other claims,
    "indicate there is no basis, on these facts, for a 93A claim."
    -53-
    Mass. Eye & Ear Infirmary v. QLT Phototherapeutics, Inc., No. 00-
    10783, at 21 (D. Mass. Sep. 23, 2002) (sealed memorandum in support
    of summary judgment).       Having remanded the unjust enrichment and
    trade secret     claims,    we   also   remand   MEEI's   93A   unfair   trade
    practices claims, noting that the success of the unfair trade
    practices claims is not necessarily dependent on the success of the
    unjust enrichment or trade secret claims.
    Massachusetts General Law ch. 93A, § 2 provides that
    "[u]nfair methods of competition and unfair or deceptive acts or
    practices in the conduct of any trade or commerce" are unlawful.
    Mass. Gen. Law ch. 93A, § 2.            In determining whether a practice
    violates Chapter 93A, we look to "(1) whether the practice . . . is
    within at least the penumbra of some common-law, statutory, or
    other established concept of unfairness; (2) whether it is immoral,
    unethical, oppressive, or unscrupulous; [and] (3) whether it causes
    substantial    injury      to    consumers   (or   competitors     or    other
    businessmen)."     PMP Assocs., Inc. v. Globe Newspaper Co., 
    321 N.E.2d 915
    , 917 (Mass. 1975) (quotations omitted). We believe that
    the same allegations underlying MEEI's unjust enrichment claim
    could potentially meet these requirements. Moreover, MEEI alleges
    that QLT's trade secret misappropriations played an integral part
    in cutting MEEI out of its fair share of the ample profit from the
    sale of Visudyne.    From the record developed thus far, this court
    sees no reason why these allegations and possibly others could not
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    meet all three of the 93A factors.        Under Massachusetts law,
    misappropriation of trade secrets alone can constitute a violation
    of Chapter 93A.   See, e.g., Jillian's Billiard Club of Am., Inc. v.
    Beloff Billiards, Inc., 
    619 N.E.2d 635
     (Mass. App. Ct. 1993).
    Thus, we remand MEEI's unfair trade practices claim along with its
    unjust enrichment and trade secret claims.
    IV.   Conclusion
    For the foregoing reasons, the judgment of the district
    court is affirmed in part and reversed and remanded in part.
    Affirmed in part and reversed and remanded in part. No
    costs.
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