Stauffer v. Internal Revenue Service ( 2019 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 18-2105
    HOFF STAUFFER,
    Administrator of the Estate of Carlton Stauffer,
    Plaintiff, Appellant,
    v.
    INTERNAL REVENUE SERVICE,
    Defendant, Appellee.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Mark L. Wolf, U.S. District Judge]
    Before
    Howard, Chief Judge,
    Torruella and Selya, Circuit Judges.
    Thomas E. Crice, for appellant.
    Julie Ciamporcero Avetta, Attorney, Tax Division, Department
    of Justice, with whom Richard E. Zuckerman, Principal Deputy
    Assistant Attorney General, Travis A. Greaves, Deputy Assistant
    Attorney General, Andrew E. Lelling, United States Attorney,
    Gilbert S. Rothenberg, Attorney, and Joan I. Oppenheimer,
    Attorney, were on brief, for appellee.
    September 16, 2019
    TORRUELLA, Circuit Judge.   This case concerns Internal
    Revenue Code ("IRC") provisions governing the timeliness of a claim
    for refund of overpaid federal taxes and the renunciation of a
    durable power of attorney under Pennsylvania law.    Hoff Stauffer
    ("Hoff") filed suit on behalf of his father's estate (the "Estate")
    against the Internal Revenue Service ("IRS"), alleging that the
    agency improperly denied his April 2013 claim for his father's
    2006 tax refund as untimely, see I.R.C. § 6511(a)(2018).       The
    Estate averred that the applicable statute of limitations for the
    filing of a tax refund claim was tolled due to Hoff's father's
    financial disability, see id. § 6511(h)(1).    The district court
    dismissed the Estate's complaint, holding that the limitations
    period was not tolled because Hoff held a durable power of attorney
    authorizing him to act on his father's behalf in financial matters.
    See Stauffer v. Internal Revenue Serv., No. CV 15-10271-MLW, 
    2018 WL 5092885
     (D. Mass. Sept. 29, 2018); see also § 6511(h)(2)(B).
    After careful review, we affirm.
    I. BACKGROUND
    In October 2005, Hoff and his father, Carlton Stauffer
    ("Carlton"), executed a written durable power of attorney (the
    "DPA").1   Hoff requested the DPA to better assist Carlton in the
    1  The DPA was executed in Pennsylvania, while Carlton was a
    Pennsylvania   citizen,   and   references  provisions   of   the
    Pennsylvania power of attorney statute. Accordingly, the district
    -2-
    management of his finances because Carlton was both elderly and
    mentally ill.         The DPA granted Hoff broad powers over Carlton's
    finances, including the authority to "prepare, execute and file in
    [Carlton's] behalf . . . any and all income tax declarations and
    returns . . . and to represent [Carlton] before the Internal
    Revenue Service . . . with respect to any claim or proceeding
    having to do with [his] tax liabilities."
    After the DPA came into effect, Hoff discovered that
    Carlton had lost track of millions of dollars in assets in the
    form of uncashed checks, matured bonds, and stocks.                    Hoff began
    recovering     these    assets      and   opened   an     investment   account   in
    Carlton's name at T. Rowe Price to deposit the recovered funds.
    In lieu of the existing DPA, T. Rowe Price required its own
    standardized, limited power of attorney form (the "TRP POA"), which
    Carlton executed on January 5, 2006.               The TRP POA only authorized
    Hoff to conduct transactions within Carlton's T. Rowe Price account
    (e.g.,   to    buy,    sell   and    trade      account    assets,   and   to   make
    withdrawals).
    Despite Hoff's financial management efforts, the father-
    son relationship began to deteriorate in March 2006.                       During a
    court held that it was governed by Pennsylvania law. Stauffer,
    
    2018 WL 5092885
    , at *10. Neither party challenges this choice of
    law holding on appeal.
    -3-
    face-to-face meeting (the "March 15 meeting"), Carlton and Hoff
    had    an    argument      regarding   Hoff's    management   of   his    father's
    financial affairs.            Part of the tension resulted from Hoff's
    insistence that, as a condition of his continued assistance,
    Carlton stop permitting his girlfriend to overspend his money.2
    To     control      Carlton's     girlfriend's    excessive     spending,    Hoff
    suggested that Carlton limit her expenses to a monthly allowance.
    A falling out ensued.
    Hoff claims to have told Carlton at the March 15 meeting
    that he would no longer be exercising any rights granted to him
    under the DPA.         Then, Carlton drafted three notices revoking the
    DPA.    However, he never sent these notices, and Hoff never received
    them.       Carlton and Hoff also stopped talking.            Carlton would not
    pick up Hoff's calls or return his calls or messages.               The fallout
    led    Hoff    to   tell    his   sister    (Carlton's   daughter),      Carlton's
    accountant, and Carlton's attorneys that he was no longer acting
    as his father's agent under the DPA.3
    2  According to Hoff, Carlton's girlfriend was spending from
    $100,000 to $200,000 per year -- an amount Carlton could not
    afford. By way of comparison, Carlton was only spending $50,000
    to $60,000 per year on himself.
    3  In May 2006, two of Carlton's attorneys contacted Hoff for his
    assistance in closing the sale of a family business.         Hoff
    responded by telling the attorneys he was no longer acting as
    Carlton's agent under the DPA and thus could not help them. The
    attorneys then drafted a new POA, but neither Carlton nor Hoff
    -4-
    The father and son, however, reconciled approximately
    four     years    later    as   reflected      by   a    series   of   financial
    transactions.      In May or June 2009, Carlton loaned Hoff $1.25M to
    purchase a home.          With Carlton's permission, Hoff withdrew this
    amount from the T. Rowe Price account.                  Then, in 2012, Carlton
    asked Hoff for $100,000, which Hoff withdrew from the same account
    at his father's request.
    In late October 2012, Carlton passed away.                 Hoff was
    named the personal representative of the Estate the following
    month.     As representative of the Estate, Hoff filed his father's
    tax returns for the tax years 2006 through 2012 in late April 2013.
    The 2006 return reported a tax overpayment of $137,403, of which
    the Estate claimed a refund of $97,364 and requested that $40,000
    of   the   remaining      $40,039   be    applied   to    Carlton's    2007   tax
    liability.       The IRS denied the claim for the 2006 tax refund as
    untimely pursuant to I.R.C. § 6511(a), which establishes the
    statutory timetable for          filing tax refund claims.             After an
    internal appeal, the IRS issued its final denial of the Estate's
    refund claim on January 7, 2015.
    On February 5, 2015, the Estate filed suit in the U.S.
    District Court for the District of Massachusetts against the IRS4
    ever signed it.
    4    Hoff's complaint incorrectly named the IRS, rather than the
    -5-
    seeking a refund of Carlton's 2006 tax overpayment.                   The Estate's
    complaint alleged that its refund claim (filed in 2013) was timely
    because      Carlton's     financial      disability   tolled      the   three-year
    statutory period to file the claim under I.R.C. § 6511(h)(1).                     On
    September 29, 2018, the district court dismissed the Estate's
    complaint, finding that: (1) Carlton               had the capacity to execute
    the DPA; (2) Hoff was, as of 2005, authorized under the DPA to act
    on behalf of Carlton in financial matters for the purposes of
    I.R.C. § 6511(h)(2)(B); (3) Hoff did not renounce the DPA; and (4)
    Carlton did not effectively revoke the DPA.                      Stauffer, 
    2018 WL 5092885
    , at *6-11.         Accordingly, the court held that the statutory
    period for the filing of Carlton's 2006 tax refund claim was never
    tolled under § 6511(h)(1) and thus had expired in October 2010,5
    which     consequently       deprived      the     court    of     subject   matter
    jurisdiction over the Estate's suit.               See Muskat v. United States,
    
    554 F.3d 183
    ,   194    (1st   Cir.    2009)    ("[A]   district     court   has
    jurisdiction to adjudicate only those refund claims that have first
    United States, as defendant.   See 
    28 U.S.C. § 1346
    (a)(1).   The
    government has not raised an issue in this regard, and we do not
    address it.
    5  Because Carlton did not timely file a tax return for 2006, the
    district court held that the applicable statute of limitations for
    the filing of his refund claim was two years and not three years
    as the Estate alleged in its complaint. Stauffer, 
    2018 WL 5092885
    ,
    at *1 n. 2; see I.R.C. § 6511(a).
    -6-
    been 'duly filed' with the Secretary of the Treasury." (citing 
    26 U.S.C. § 7422
    (a))).    This appeal ensued thereafter.
    II. ANALYSIS
    The Estate's attack on the district court's decision is
    two-pronged: its first swing is directed at the court's factual
    finding that Hoff never renounced the DPA, while the second takes
    aim at the court's legal conclusion that the DPA qualified Hoff as
    a person authorized to act on behalf of Carlton in financial
    matters for the purposes of I.R.C. § 6511(h)(2)(B).          The Estate
    misses on both swings.       We address the Estate's arguments in
    inverse order, directing our attention first to its challenge of
    the district court's interpretation of I.R.C. § 6511(h)(2)(B).
    A.   Hoff's Qualification as a Person Authorized to Act on Behalf
    of Carlton in Financial Matters Pursuant to § 6511(h)(2)(B)
    We review the district court's interpretation of I.R.C.
    § 6511(h)(2)(B) -- the legal basis for the court's decision to
    dismiss   the   Estate's   complaint   for   lack   of   subject   matter
    jurisdiction -- de novo.    Muskat, 
    554 F.3d at 194
    .
    The IRC states that "[n]o suit for a tax refund may be
    maintained in a United States district court 'until a claim for a
    refund . . . has been duly filed.'       
    26 U.S.C. § 7422
    (a).       Thus,
    timely filing of a refund claim is a jurisdictional prerequisite
    to a tax refund suit."     Me. Med. Ctr. v. United States, 
    675 F.3d 110
    , 114 (1st Cir. 2012) (citing Phila. Marine Trade Ass'n v.
    -7-
    Comm'r, 
    523 F.3d 140
    , 146 (3d Cir. 2008)).       The timeliness of a
    refund claim6 is governed by I.R.C. § 6511(a), which provides that
    a "[c]laim for credit or refund of an overpayment of any tax
    imposed" must be filed "within 2 years from the time the tax was
    paid" when, as here, "no return was filed by the taxpayer."      This
    two-year statute of limitations is commonly referred to as a "look-
    back period."     Comm'r of Internal Revenue v. Lundy, 
    516 U.S. 235
    ,
    239 n.1, 240 (1996).      Generally, a taxpayer who fails to file his
    refund claim within the applicable limitations period 7 may no
    longer   obtain     his   overpayment   refund   or   credit.   I.R.C.
    § 6511(b)(1).
    Notwithstanding, the applicable limitations period will
    be tolled or "suspended" if a taxpayer is financially disabled.
    Id. § 6511(h)(1) ("In the case of an individual, the running of
    the [look-back] periods . . . shall be suspended during any period
    of such individual's life that such individual is financially
    disabled.").    The IRC defines a financially disabled taxpayer as
    an individual who "is unable to manage his financial affairs by
    6  "A tax return that claims a refund is considered a 'claim' for
    purposes of § 6511." Walter v. United States, No. 09-420, 
    2009 WL 5062391
    , at *6 (W.D. Pa. Dec. 16, 2009) (citing 
    26 C.F.R. § 301
    –
    6402–3(a) (1, 5), (c)).
    7  When, unlike here, a taxpayer files a timely tax return, the
    applicable limitations period for any overpaid tax refund claim is
    three years. I.R.C. § 6511(a).
    -8-
    reason of a medically determinable physical or mental impairment
    . . . which can be expected to result in death or which has lasted
    or can be expected to last for a continuous period of not less
    than 12 months."   Id. § 6511(h)(2)(A).
    Not all financially disabled individuals, however, are
    entitled to the benefit of § 6511(h)(1)'s tolling provision.    The
    IRC sets forth an exception to the exception:       "An individual
    shall not be treated as financially disabled during any period
    that . . .[any] person is authorized to act on behalf of such
    individual in financial matters."    Id. § 6511(h)(2)(B).   But that
    provision does not provide any statutory guidance as to what
    qualifies a person as one "authorized to act on behalf of [a
    financially disabled taxpayer] in financial matters." Id.     It is
    this statutory vacuum that makes way for Hoff's challenge of the
    district court's interpretation.
    The Estate urges us to adopt a reading of § 6511(h)(2)(B)
    under which a person will be considered "authorized to act on
    behalf of [a financially disabled taxpayer] in financial matters"
    only if he or she has: (1) authority to file the financially
    disabled taxpayer's tax returns; (2) a duty to file the financially
    disabled taxpayer's tax returns; and (3) actual or constructive
    knowledge that the tax returns for a particular year have to be
    filed on behalf of the disabled taxpayer.   The Estate claims that,
    -9-
    because Hoff did not meet these three purported requirements, the
    statute of limitations for the filing of Carlton's tax refund
    should have remained suspended through his death in October 2012
    due to his financial disability.        We disagree.
    As a preliminary matter, we do not need to decide whether
    the Estate's first purported requirement -- authority to file the
    financially disabled taxpayer's tax returns -- must be met in order
    to strip a disabled taxpayer of § 6511(h)(1)'s tolling benefit.
    Hoff's authority to file Carlton's tax returns is not at issue
    here.    The DPA explicitly granted him the authority to file
    Carlton's tax returns, as well as any other tax-related claim
    before the IRS.   Thus, ever mindful of the principles that guide
    our interpretation of a statute, we turn to the Estate's purported
    "duty" and "actual or constructive knowledge" requirements for a
    person to qualify as "authorized to act on behalf of [a financially
    disabled taxpayer] in financial matters" under § 6511(h)(2)(B).
    We have generally recognized that "[t]he words of the
    statute are the first guide to any interpretation of the meaning
    of the statute . . . if the meaning is plain."               Greebel v. FTP
    Software, Inc., 
    194 F.3d 185
    , 192 (1st Cir. 1999).                First, we
    "determine   whether   the   language    at   issue    has    a   plain   and
    unambiguous meaning with regard to the particular dispute in the
    case."   In re Fin. Oversight & Mgmt. Bd. for Puerto Rico, 919 F.3d
    -10-
    121, 128 (1st Cir. 2019) (quoting Robinson v. Shell Oil Co., 
    519 U.S. 337
    , 340 (1997)).      "The plainness or ambiguity of statutory
    language is determined by reference to the language itself, the
    specific context in which that language is used, and the broader
    context of the statute as a whole."        
    Id.
     (citation omitted).8    "If
    the statute's language is plain, 'the sole function of the courts
    is to enforce it according to its terms.'"            
    Id.
     (quoting United
    States v. Ron Pair Enters., Inc., 
    489 U.S. 235
    , 241 (1989)).
    However, if "the language is not plain and unambiguous, we then
    turn to other tools of statutory construction, such as legislative
    history."    
    Id.
     (citing Arnold v. United Parcel Serv., Inc., 
    136 F.3d 854
    , 858 (1st Cir. 1998)).
    Here, the key word for our analysis of § 6511(h)(2)(B)is
    "authorized."    By urging us to adopt the "duty" and "constructive
    knowledge" requirements, the Estate asks us to interpret the term
    "authorized" in § 6511(h)(2)(B) beyond its plain and unambiguous
    meaning.    And this we cannot do.    The Estate's proposed definition
    of   "authorized"   finds   no   support   in   §   6511(h)(2)(B)'s   plain
    language or its statutory context.
    8  To examine § 6511(h)(2)(B)'s context we "look to the provisions
    of the whole law, and to its object and policy," U.S. Nat'l Bank
    of Or. v. Indep. Ins. Agents of Am., Inc., 
    508 U.S. 439
    , 455 (1993)
    (internal quotation omitted), and "consult[] any precedents or
    authorities that inform [our] analysis," Dolan v. U.S. Postal
    Serv., 
    546 U.S. 481
    , 486 (2006).
    -11-
    Consistent    with    the     interpretative      scheme   outlined
    above, we begin our statutory examination with the plain meaning
    of   "authorized."      See   Greebel,    
    194 F.3d at 192
    .     The   term
    "authority" is not defined in the IRC, and the use of the term
    "authorized"   in    § 6511(h)(2)(B)       is   too    situational    to    draw
    parallels to its use elsewhere in the code.9                 Since the other
    provisions of the IRC are not helpful to our analysis here, we
    turn to the dictionary definition of the term for further clarity.
    The root word for "authorized" is "authority," which is
    defined as: (1) "[t]he official right or permission to act, esp.
    to act legally on another's behalf; esp., the power of one person
    to affect another's legal relations by acts done in accordance
    with the other's manifestations of assent," Authority, Black's Law
    9  Compare I.R.C. § 6511(h)(2)(B), with, e.g., id. § 5609 (stating
    that "the seizing officer is authorized to destroy," inter alia,
    "unregistered still[s] . . . where it shall be impracticable to
    remove the same"), § 7808 ("The Secretary [of the Treasury] is
    authorized to designate . . . depositaries in each State . . . ."),
    and § 9040(b) ("The Commission is authorized . . . to institute
    actions in the district courts of the United States to seek
    recovery of any amounts determined to be payable to the Secretary
    [of the Treasury] as a result of an examination and audit
    . . . .").   But see id. § 5559 (drawing a distinction between
    situations where the Secretary of Treasury is "required" to make
    a quantitative determination versus situations where he is
    "authorized" to make such determinations), § 7509 ("[T]he
    Secretary [of the Treasury] shall be authorized and directed
    . . . ." (emphasis added)), § 7516 (using the term "authorized" in
    conjunction with "discretion"), and § 7804(a) (using the terms
    "authorized" and "shall" in the same sentence in reference to the
    Commissioner's powers to appoint and supervise employees).
    -12-
    Dictionary (11th ed. 2019); (2) "the power delegated by a principal
    to an agent," id.; (3) "power to influence or command thought,
    opinion,    or     behavior,"   Authority,   Merriam-Webster   Online
    Dictionary,      https://www.merriam-webster.com/dictionary/authority
    (last visited Aug. 15, 2019); and (4) "freedom granted by one in
    authority," id.     These dictionary definitions reveal no ambiguity.
    None of the above definitions imply that the existence of a "duty"
    is a requisite for a person's authority.        To the contrary, the
    provided definitions illustrate that one who acts with "authority"
    has been bestowed with the power to perform an action on another's
    behalf.    By contrast, a duty imposes an obligation to perform a
    certain act.10     While there are duties that flow from grants of
    authority (e.g., those of loyalty and care in agency law), the
    relevant question here is whether in this context, definitionally
    speaking, one who is "authorized" to take a certain course of
    action should be understood narrowly to mean only one who has an
    affirmative obligation to take such action.     The answer is clearly
    10 The same dictionaries cited for the definition of "authority"
    define "duty" as: (1) "[a] legal obligation that is owed or due to
    another and that needs to be satisfied," Duty, Black's Law
    Dictionary (11th ed. 2019); (2) "that which one is bound to do,
    and for which somebody else has a corresponding right," id.;
    (3) "obligatory tasks, conduct, service, or functions that arise
    from one's position (as in life or in a group)," Duty, Merriam-
    Webster       Online       Dictionary,        https://www.merriam-
    webster.com/dictionary/duty (last visited Aug. 15, 2019); (4) "a
    moral or legal obligation," id.
    -13-
    no.   The    plain      language   of    §   6511(h)(2)(B)    simply   does   not
    contemplate the Estate's purported "duty" requirement.                  Because
    the term "authorized" is unambiguous within its statutory context,
    our examination of its meaning stops here, and we need not proceed
    to examine § 6511(h)(2)(B)'s legislative history.                See In re Fin.
    Oversight & Mgmt. Bd. for Puerto Rico, 919 F.3d at 128.
    Therefore, we hold that a person may be considered
    "authorized to act on behalf of [a financially disabled taxpayer]
    in financial matters" for purposes of § 6511(h)(2)(B) even if he
    has no affirmative obligation to act on the taxpayer's behalf.
    Our decision is consistent with that of at least one
    other court that faced a similar controversy.                In Plati v. United
    States, 
    99 Fed. Cl. 634
    , 640 (2011), the plaintiff's son and
    attorney-in-fact -- who brought the action on his mother's behalf
    (the financially disabled taxpayer) -- averred that he was unable
    to file her refund claim within the applicable limitations period
    because of his mother's insistence on "keeping control" over her
    financial affairs.         Based on this, the son sought that his mother
    be granted "refuge in the suspension of the look-back period
    because     of   [his    mother's]      financial   disability,"   despite    his
    authority to file his mother's tax returns pursuant to a DPA.                 Id.
    at 640-41.        In denying the plaintiff's requested relief, the
    United States Court of Federal Claims stressed that:
    -14-
    [U]nder [I.R.C.] § 6511(h)(2)(B), the relevant
    question is whether any person was "authorized to act
    on behalf of [the taxpayer] in financial matters,"
    (emphasis added), not whether the authorized person
    actually took such action. The statute is not
    concerned with whether the taxpayer's affairs were
    actually managed, nor whether they were managed
    competently, but rather whether someone had been given
    the authority to act. One may certainly possess the
    authority conferred by a power of attorney without
    implementing, exercising, or acting on that power.
    Id. at 641 (alterations in the original) (quoting Bova v. United
    States, 
    80 Fed. Cl. 449
    , 458 n.12 (2008)).11             Within the context
    of § 6511(h)(2)(B), we see no significant difference between the
    son's   failure   to   file   his   mother's    tax   returns      due   to   her
    insistence on controlling her finances in Plati and Hoff's failure
    to file Carlton's tax returns due to their falling out.                  In both
    cases, the sons -- as agents of their parents -- failed to act
    pursuant to the authority they had been granted.
    The    Estate's    argument   in    support   of   an   "actual     or
    constructive knowledge" requirement is even less persuasive.                  The
    statute's plain language does not include any term into which such
    a requirement can plausibly be read, nor does the Estate point to
    any contextual basis (e.g., provisions of the whole law) from which
    11 In Bova, 80 Fed. Cl. at 458 n. 12, the United States Court of
    Federal Claims held that a non-verbal agreement between a
    financially disabled taxpayer and her accountant stipulating that
    he was not to act pursuant to the power of attorney had no bearing
    on the applicability of I.R.C. § 6511(h)(2)(B).
    -15-
    it can be inferred.        Thus, we also hold that, for purposes of
    § 6511(h)(2)(B), a person "authorized to act on behalf of [a
    financially     disabled   taxpayer]     in   financial     matters"       is   not
    required to have actual or constructive knowledge of the need to
    file tax returns in a specific year.12
    Accordingly,     the    DPA    qualified       Hoff    as   a    person
    "authorized to act on behalf of [Carlton] in financial matters"
    pursuant   to   § 6511(h)(2)(B).         We   move   on   to     Hoff's    factual
    challenge.
    B.   Renunciation of the DPA
    We review the district court's factual findings for
    clear error.     Me. Med. Ctr., 
    675 F.3d at 114
    .13          As we have stated
    12 As a factual matter, we        would not, in any case, be persuaded
    to believe that Hoff lacked       constructive knowledge of the need to
    file Carlton's tax returns.        The record reflects that he was fully
    aware of his father's gross       financial mismanagement.
    13 On the eve of oral argument, Hoff submitted a letter pursuant
    to Fed. R. App. P. 28(j), arguing for the first time that our
    review of the district court's determination that he did not
    renounce the DPA is de novo. Relying on the Pennsylvania Superior
    Court's decision in Consol. Rail Corp. v. ACE Prop. & Cas. Ins.
    Co., 
    182 A.3d 1011
     (Pa. Super. Ct. 2018), appeal denied, 
    191 A.3d 1288
     (Pa. 2018), Hoff contended that whether a principal-agent
    relationship exists is a pure question of law subject to de novo
    review whenever the facts underlying the relationship are
    undisputed.   Although Hoff's reliance on Consolidated Rail is
    misplaced, we need not wade into the matter. Hoff's opening brief
    -- submitted over a year after the Pennsylvania Superior Court
    decided Consolidated Rail -- conceded that the applicable standard
    of review was clear error. New arguments cannot be raised in a
    Rule 28(j) letter. See Ruskai v. Pistole, 
    775 F.3d 61
    , 66 (1st
    Cir. 2014); Lattab v. Ashcroft, 
    384 F.3d 8
    , 17 (1st Cir. 2004).
    -16-
    before, "[t]he clear-error standard is extremely deferential.
    Under it, 'we ought not to upset findings of fact or conclusions
    drawn therefrom unless, on the whole of the record, we form a
    strong, unyielding belief that a mistake has been made.'"                   United
    States v. Márquez, 
    280 F.3d 19
    , 26 (1st Cir. 2002) (quoting
    Cumpiano v. Banco Santander, 
    902 F.2d 148
    , 152 (1st Cir. 1990)).
    Carlton and Hoff's execution of the DPA gave rise to a
    principal-agent relationship.            See generally 
    20 Pa. Cons. Stat. § 5601
     (2015).14     Under Pennsylvania law, an agent's renunciation
    of   the   duties   and   obligations      of   such    relationship    must    be
    positive, unequivocal, and made known to the principal for it to
    be effective.       Bergner v. Bergner, 
    67 A. 999
    , 1001 (Pa. 1907).
    Furthermore,    "the      burden   of     proving      renunciation    of   one's
    obligations rests on the party asserting it."               Shafer v. A. I. T.
    S., Inc., 
    428 A.2d 152
    , 155 (Pa. Super. Ct. 1981).
    The district court found that the Estate did not meet
    its burden of proving that Hoff renounced the DPA.               Our review of
    the record leads us to conclude the same.               Thus, we find no error
    in the district court's finding, much less a clear error.
    Since Hoff failed to raise this argument in his opening brief, we
    deem it waived. See Med. Mut. Ins. Co. of Me. v. Indian Harbor
    Ins. Co., 
    583 F.3d 57
    , 61 (1st Cir. 2009).
    14  As mentioned above, the parties do not contest that the DPA
    was governed by Pennsylvania law.
    -17-
    We agree with the district court's assessment of the
    deposition testimony upon which it primarily relied to reach its
    finding that Hoff did not renounce the DPA.           See Stauffer, 
    2018 WL 5092885
    , at *10.      During the deposition, which was taken for a
    separate Pennsylvania state court proceeding,15 Hoff was asked, "Do
    you recall ever discussing the possible termination of the power
    of attorney directly with your father?"; to which he responded, "I
    don't, but I could have said . . . I'm not doing anything with it
    now, it's really a non-issue, but it would hurt my feelings if it
    were terminated."      Below and now before us, the Estate attempts
    to save itself from Hoff's deposition testimony by contradictorily
    asserting that Hoff actually told Carlton during the March 15
    meeting that "he would no longer be exercising any rights granted
    to him under the [DPA]."       But, as the district court noted, "if
    true,     this    [purported   statement]    would    not   constitute    a
    renunciation" because it "only expresses an intent not to use the
    [DPA], not a 'positive and unequivocal' renunciation of it."             
    Id.
    (quoting Bergner, 67 A. at 1001); see 
    20 Pa. Cons. Stat. § 5604
    (b)
    (2017) ("Unless the power of attorney states a time of termination,
    it   is   valid    notwithstanding    the   lapse    of   time   since   its
    15 See Estate of Stauffer v. Bielava, No. 906 MDA 2015, 
    2016 WL 4882571
     (Pa. Super. Ct. July 20, 2016).
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    execution."). 16     As   such,    Hoff's    purported      March    15   meeting
    statement is -- as a matter of law -- inconsequential to the
    question of whether he renounced the DPA.
    A close look at Hoff's deposition testimony further
    supports the district court's conclusion that Hoff never renounced
    the DPA.     During his deposition, Hoff testified that he was not
    going to do anything with the DPA "now," referencing a point in
    time after the March 15 meeting.          This strongly suggests that Hoff
    believed his rights under the DPA went uninterrupted after the
    March   15    meeting,    which    clearly     contradicts     his    claim    of
    renunciation during said meeting.           Moreover, in a letter Hoff sent
    to   Carlton's     psychologist,    Dr.      Stanley   E.    Schneider,       Hoff
    represented that he held the DPA until Carlton's death in 2012.
    16 We note that the language used by the district court strongly
    suggests that it did not grant credibility to Hoff's contradictory
    statement, which was memorialized in a supplemental answer to
    interrogatories submitted a mere five days after a deposition in
    the present case. See Stauffer, 
    2018 WL 5092885
    , at *10 ("[I]f
    true, this would not constitute a renunciation. The purported
    statement only expresses an intent . . . ." (emphasis added));
    see also State Police Ass'n of Mass. v. Comm'r, 
    125 F.3d 1
    , 5 (1st
    Cir. 1997) (holding that our "mode of review requires us to accept
    [the lower court's] credibility determinations and its findings
    about historical facts unless, after careful evaluation of the
    evidence, we are left with an abiding conviction that those
    determinations and findings are simply wrong"); Constructora Maza,
    Inc. v. Banco de Ponce, 
    616 F.2d 573
    , 576 (1st Cir. 1980) ("The
    presumption of correctness reflected in the 'clearly erroneous'
    rule applies not only when the district court's findings are based
    upon its assessment of conflicting testimony, but also when . . .
    much of the evidence is documentary . . . .").
    -19-
    See Stauffer, 
    2018 WL 5092885
    , at *10.
    The Estate also contends that the district court erred
    in finding that Hoff did not renounce the DPA because "uncontested
    evidence" establishes that Hoff notified individuals to whom he
    had previously represented himself as Carlton's agent -- Carlton's
    daughter, accountant, and attorneys -- that he would no longer act
    pursuant to    the DPA.     These notifications to third parties,
    however, do not help the Estate.            For a renunciation to be
    effective "it is essential that it be made known to the principal,"
    Bergner, 67 A. at 1001, and the Estate fails to identify any part
    of the record that undermines the district court's conclusion that
    "there is no evidence [showing] that any of [the third parties]
    communicated   [Hoff's    unwillingness    to   act   under   the   DPA]   to
    Carlton."   Stauffer, 
    2018 WL 5092885
    , at *10.
    Finally, we point out an additional consideration that
    favors the district court's finding that Hoff did not renounce the
    DPA.    After the March 15 meeting, Carlton drafted three letters
    purporting to revoke Hoff's DPA.17        We find no reason for Carlton
    to have drafted the three letters purporting to revoke the DPA if
    Hoff had previously made it unequivocally clear to Carlton that he
    renounced the DPA during the March 15 meeting.         See Bergner, 
    67 A. 17
       As stated above, none of these letters were ever sent to Hoff.
    -20-
    at 1001.      One cannot revoke an agency that has already been
    renounced.
    Based on the foregoing analysis, we conclude that the
    district court's finding that Hoff never renounced the DPA was
    correct.     Thus, the court did not commit clear error in reaching
    this factual conclusion.
    III. CONCLUSION
    For the reasons explained above, we affirm the district
    court's judgment dismissing the Estate's complaint for lack of
    subject matter jurisdiction.
    Affirmed.
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