Alexander Austin Sheshunoff v. Gabrielle Martha Sheshunoff ( 2005 )


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  •       TEXAS COURT OF APPEALS, THIRD DISTRICT, AT AUSTIN
    NO. 03-04-00395-CV
    Alexander Austin Sheshunoff, Appellant
    v.
    Gabrielle Martha Sheshunoff, Appellee
    FROM THE DISTRICT COURT OF TRAVIS COUNTY, 250TH JUDICIAL DISTRICT
    NO. FM302436, HONORABLE PAUL DAVIS, JUDGE PRESIDING
    OPINION
    The principal issue in this case concerns the enforceability of a marital property
    agreement. See Tex. Fam. Code Ann. § 4.105 (West 1998). Applying section 4.105 to the defensive
    theories that were timely raised in this case, we affirm the district court’s judgment enforcing the
    agreement.
    BACKGROUND
    The Marital Property Agreement
    Appellant Alexander Sheshunoff and Appellee Gabrielle Sheshunoff were married
    in 1971. Before their marriage, the couple entered into an agreement governing various rights and
    obligations relating to their marital property, and they devised a new one in 1990. Beginning in
    2002, the couple, each with assistance of several attorneys, accountants, and other professional
    advisors, began negotiating an elaborate thirty-seven page Marital Property Agreement that
    addressed the couple’s respective rights to their substantial marital assets. They eventually executed
    the Agreement in February 2003. In April 2003, Ms. Sheshunoff filed for divorce and sought the
    benefit of the agreed-upon property division.
    The circumstances surrounding the formation of the Agreement are at the root of the
    present controversy. According to Mr. Sheshunoff, the Agreement shifted large amounts of the
    couple’s marital assets to Ms. Sheshunoff and large amounts of marital liabilities to him so as to
    leave her with a net worth of $48 million and him with a net worth of negative $12 million. Mr.
    Sheshunoff asserts that, throughout the negotiations, he had understood and intended that this
    arrangement was solely to achieve tax and estate planning benefits and that neither party had any
    intention to actually divorce. In an affidavit he filed in the district court, he explains that the parties
    intended for Ms. Sheshunoff, a Canadian citizen, to expatriate their assets to Canada following the
    adoption of the Agreement and ultimately patriate the assets in a jurisdiction that would not impose
    estate or inheritance taxes. Mr. Sheshunoff claims that Ms. Sheshunoff and her lawyers misled him
    to believe that she shared this intent when, in fact, she was plotting to file for divorce (and avail
    herself of the highly favorable property division) once she persuaded him to sign the agreement. Ms.
    Sheshunoff denies these allegations.
    Proceedings in the district court
    On July 1, 2003, Ms. Sheshunoff filed a no-evidence motion for partial summary
    judgment to “declare the February 8, 2003, ‘Marital Property Agreement’ executed by and between
    2
    the parties fully enforceable.” On July 15, Mr. Sheshunoff filed an answer1 containing a general
    denial and the affirmative defenses that (1) “ALEXANDER AUSTIN SHESHUNOFF did not sign
    the agreement voluntarily but under duress and fraud,” and (2) “[t]he agreement was unconscionable
    when it was signed” because Ms. Sheshunoff’s financial obligations were not disclosed and because
    he was not aware that Ms. Sheshunoff intended to file for divorce when he signed the Agreement.2
    As we discuss in detail below, involuntary execution and unconscionability (coupled with inadequate
    disclosure of marital property information) are the only two defenses to marital property agreements
    that are specified in the family code. See Tex. Fam. Code Ann. § 4.105(a)(1), (2). On July 23, Mr.
    Sheshunoff filed a response to Ms. Sheshunoff’s partial summary-judgment motion. Among other
    grounds for denial, he asserted (1) involuntary execution of the Marital Property Agreement; and (2)
    unconscionability and lack of disclosure. See 
    id. With regard
    to his involuntary execution defense,
    he claimed to offer “evidence that created a genuine issue of material fact that his consent to the
    Agreement was not voluntary, because it was obtained by conduct that amounted to fraud and
    duress.”
    1
    The July 15 filing was Mr. Sheshunoff’s first amended answer. His original answer is not
    in the record. His summary judgment response represents that he filed a pro se answer on May 9.
    2
    Mr. Sheshunoff also asserted, as an affirmative defense, “The document is not an
    agreement contemplated by either Article XVI, Section 15 of the Texas Constitution or TX Family
    Code, Subchapter B (§ 4.101 et al) but is an estate and tax planning device.” To the extent this
    defense is distinct from his contentions regarding involuntary execution and fraud, he does not assert
    it on appeal.
    3
    On September 29, the district court granted Ms. Sheshunoff’s motion for partial
    summary judgment without specifying the grounds.3 Several months later, in late spring of 2004,4
    Mr. Sheshunoff amended his answer to raise several new affirmative defenses against the
    enforcement of the Marital Property Agreement and, for the first time, asserted counterclaims. He
    then filed a jury demand. As further amended, his pleadings ultimately stated the following
    affirmative defenses, in addition to his original defenses:
    !    want of consideration;
    !    breach of fiduciary duty, by inducing Mr. Sheshunoff into the Marital Property
    Agreement “under false pretenses”;
    !    fraudulent inducement into the Marital Property Agreement through
    misrepresentations regarding a claimed collateral agreement to convey the
    “Maine Property” (as defined in the Agreement) into trust for the benefit of their
    children;
    !    fraudulent inducement into the Marital Property Agreement through
    misrepresentations regarding a claimed collateral agreement that the Magnolia
    Property and Arcade Land Management Company would be Mr. Sheshunoff’s
    separate property and would be available as a source of payments on the Draw
    Note (all also as defined in the Agreement);
    3
    However, the district court initially announced its intent to grant the motion in a letter
    explaining that “the cases do not support a contention that fraud is sufficient to support a finding of
    involuntariness” under section 4.105 of the family code. The court added that “even if fraud is
    sufficient, failure of a party to disclose that s/he is contemplating divorce does not constitute fraud
    in the inducement of a marital agreement, at least under the facts and circumstances of this case.”
    “Finally,” the court stated, “I do not believe that a trier of fact, after hearing evidence in this case,
    could correctly conclude that Mr. Sheshunoff signed the marital agreement involuntarily.”
    4
    The parties assert that Mr. Sheshunoff filed his second amended answer and original
    counter-claim on April 30. The record does not contain this document, but only his fourth amended
    answer and counter-claim, filed May 25.
    4
    !    fraudulent inducement into the Marital Property Agreement through
    misrepresentations that the Agreement was intended solely to be an estate-
    planning and tax-planning device;
    !    section 4.105 of the family code, by barring all defenses to the enforcement of
    the Marital Property Agreement not enumerated in that provision, violates Texas
    and federal constitutional protections including due process and due course of
    law, separate and community property, and impairment of obligations of
    contracts.
    Mr. Sheshunoff asserted the following counterclaims:
    !              divorce;
    !              reformation, specific performance, breach of contract damages, or
    rescission with regard to the Maine Property;
    !              reformation, specific performance, breach of contract damages, or
    rescission with regard to the Magnolia Property and the Arcade Land
    Management Company;
    !              damages for fraudulent inducement related to an alleged
    representation that the Marital Property Agreement was intended
    solely to be an estate and tax-planning device;
    !              damages for breach of fiduciary duty related to an alleged
    representation that the Marital Property Agreement was intended
    solely to be an estate and tax-planning device;
    !              damages for fraudulent inducement regarding the Maine Property;
    !              damages for fraudulent inducement regarding the Magnolia Property
    and Arcade Land Management Company.
    On May 4, 2004, Ms. Sheshunoff filed a traditional motion for summary judgment
    claiming that the Agreement left no community estate to be divided and that the court should render
    judgment in accordance with that property division. She also filed a motion to strike Alexander
    5
    Sheshunoff’s new defenses and counterclaims, as well as a motion to compel arbitration and to sever
    with regard to his counterclaims for reformation or modification concerning the Maine Property and
    the Magnolia Property and Arcade Land Management Company. The latter motion was based on
    sections 15.9 and 15.10 of the Marital Property Agreement, which required that “any dispute relating
    to this Agreement” be mediated or, “if the parties cannot agree on a mediator, to binding arbitration.”
    The district court struck all of Alexander Sheshunoff’s new defenses and all of his
    counterclaims except those seeking reformation of the Agreement in relation to the Maine Property
    and the Magnolia Property and Arcade Land Management Company, which it ordered to arbitration.5
    In its order, the court also made explicit findings that (1) the prior partial summary judgment
    included the determination that the Marital Property Agreement was fully enforceable and barred all
    defenses to enforcement; (2) all of Alexander Sheshunoff’s counterclaims (other than those relating
    to the Maine Property and the Magnolia Property and Arcade Land Management Company seeking
    reformation or modification of the Marital Property Agreement) were precluded by the prior partial
    summary judgment and were not timely pled; (3) the remaining counterclaims related to disputes and
    disagreements regarding the Marital Property Agreement, and should thus be severed and referred
    to arbitration as provided in the Agreement; and that (4) the requirement to mediate disputes relating
    to the Marital Property Agreement “has elapsed, is futile and would create unnecessary delay and
    cause the parties to incur unnecessary expense.” The district court subsequently granted final
    summary judgment and a final decree of divorce incorporating its prior rulings that the Marital
    5
    The district court also denied a motion for sanctions filed by Ms. Sheshunoff.
    6
    Property Agreement was fully enforceable and dividing the property in accordance with the
    Agreement. This appeal followed.
    DISCUSSION
    Mr. Sheshunoff brings five issues on appeal. First, he contends that the district court
    erred in granting its partial summary judgment foreclosing his involuntariness defense; he does not
    complain of the court’s ruling regarding unconscionability and lack of disclosure. In his second
    issue, Mr. Sheshunoff argues that the district court abused its discretion in striking his amended
    pleadings. In his third issue, Mr. Sheshunoff asserts that the district court erred in severing and
    referring his reformation claims to arbitration because Ms. Sheshunoff had waived her right to seek
    arbitration and had failed to exhaust her remedy of mediation as a precedent to arbitration. In his
    fourth issue, Mr. Sheshunoff complains that the district court erred in striking his jury demand, while
    in his fifth issue he contends that the district court erred in granting final summary judgment because
    he had raised genuine issues of material fact regarding his stricken pleadings and severed claims.6
    Partial summary judgment
    In his first issue, Mr. Sheshunoff challenges the district court’s granting of partial
    summary judgment foreclosing his involuntary-execution defense to the Marital Property Agreement.
    Specifically, he argues that (1) he has raised a fact issue with regard to the common-law defenses
    6
    After this case was submitted, Ms. Sheshunoff filed a motion to dismiss predicated on
    events during an arbitration proceeding that the parties conducted after oral argument. In light of our
    disposition of the merits, we dismiss the motion as moot.
    7
    of fraudulent inducement and duress; and (2) this evidence also raises a fact issue regarding
    involuntary execution under section 4.05 of the family code.
    Standard of review
    The district court granted partial summary judgment on a “no evidence” motion filed
    by Ms. Sheshunoff. See Tex. R. Civ. Pro. 166a(i). A no-evidence summary judgment is essentially
    a pretrial directed verdict; thus, we apply the same legal sufficiency standard in reviewing the
    no-evidence summary judgment as we apply in reviewing a directed verdict. Jackson v. Fiesta Mart,
    Inc., 
    979 S.W.2d 68
    , 70 (Tex. App.—Austin 1998, no pet.). We view the evidence in a light that
    tends to support the finding of the disputed fact and disregard all evidence and inferences to the
    contrary. Minyard Food Stores, Inc. v. Goodman, 
    80 S.W.3d 573
    , 577 (Tex. 2002). If more than
    a scintilla of evidence exists, it is legally sufficient. 
    Goodman, 80 S.W.3d at 577
    ; Cantu v. Texas
    Workforce Comm’n, 
    145 S.W.3d 236
    , 239 (Tex. App.—Austin 2004, no pet.). A no-evidence point
    will be sustained when (a) there is a complete absence of evidence of a vital fact, (b) the court is
    barred by rules of law or of evidence from giving weight to the only evidence offered to prove a vital
    fact, (c) the evidence offered to prove a vital fact is no more than a mere scintilla, or (d) the evidence
    conclusively establishes the opposite of the vital fact. Merrell Dow Pharms. v. Havner, 
    953 S.W.2d 706
    , 711 (Tex. 1997). More than a scintilla of evidence exists if it would allow reasonable and
    fair-minded people to differ in their conclusions. Forbes, Inc. v. Granada Biosciences, Inc., 
    124 S.W.3d 167
    , 172 (Tex. 2003). Because the trial court’s order does not specify the grounds for
    granting summary judgment, we must affirm the summary judgment if any of the theories presented
    8
    to the trial court and preserved for appellate review are meritorious. Provident Life & Accident Ins.
    Co. v. Knott, 
    128 S.W.3d 211
    , 217 (Tex. 2004).
    We must construe section 4.105 of the family code to address Mr. Sheshunoff’s
    claims on appeal. Statutory construction is a question of law we review de novo. Johnson v. City
    of Fort Worth, 
    774 S.W.2d 653
    , 656 (Tex. 1989). When construing a Texas statute, our paramount
    task is to ascertain the legislature’s intent in enacting that provision. Texas Dep’t of Protective &
    Regulatory Servs. v. Mega Child Care, Inc., 
    145 S.W.3d 170
    , 176 (Tex. 2004). We first look to the
    plain and common meaning of the words the legislature used. Tex. Gov’t Code Ann. § 311.011
    (West 2005); Kroger Co. v. Keng, 
    23 S.W.3d 347
    , 349 (Tex. 2000); Texas Workers’ Comp. Comm’n
    v. Texas Builders Ins. Co., 
    994 S.W.2d 902
    , 908 (Tex. App.—Austin 1999, pet. denied). “Words
    and phrases that have acquired a technical or particular meaning, whether by legislative definition
    or otherwise, shall be construed accordingly.” Tex. Gov’t Code Ann. § 311.011(b). We are to
    presume that every word in a statute has been used for a purpose and that each word, phrase, clause,
    and sentence should be given effect. Cities of Austin, Dallas, Fort Worth and Hereford v.
    Southwestern Bell Tel. Co., 
    92 S.W.3d 434
    , 442 (Tex. 2002); see State v. Evangelical Lutheran
    Good Samaritan Soc’y, 
    981 S.W.2d 509
    , 511 (Tex. App.—Austin 1998, no pet.). In ascertaining
    legislative intent, we may also consider the evil sought to be remedied, the legislative history, and
    the consequences of a particular construction. Helena Chem. Co. v. Wilkins, 
    47 S.W.3d 486
    , 493
    (Tex. 2001). We must also consider, among other things, statutory provisions on the same or similar
    subjects. Tex. Gov’t Code Ann. § 312.008 (West 2005). “When the same or a similar term is used
    in the same connection in different statutes, the term will be given the same meaning in one as in the
    9
    other, unless there is something to indicate that a different meaning was intended.” Guthery v.
    Taylor, 
    112 S.W.3d 715
    , 722 (Tex. App.—Houston [14th Dist.] 2003, no pet.). Additionally, we
    are authorized to consider the “object sought to be attained” by the legislature when enacting the
    provision. Tex. Gov’t Code Ann. § 311.023 (West 2005); see also In re Bell, 
    91 S.W.3d 784
    , 787
    (Tex. 2002) (“[The Act] makes clear that courts may consider the ‘legislative history’ and the ‘object
    sought to be attained’ in construing statutes.”). A related concept is that we are to construe a uniform
    act adopted by the Texas Legislature “to effect its general purpose to make uniform the law of those
    states that enact it.” Tex. Gov’t Code Ann. § 311.028 (West 2005).
    The involuntary execution defense
    Our disposition of Mr. Sheshunoff’s first issue requires us to evaluate Mr.
    Sheshunoff’s summary-judgment evidence against the standard of “involuntary execution” in section
    4.105 of the family code. The parties dispute the meaning of “involuntary execution” and the extent
    to which it can be proven by evidence of common-law defenses like fraud or duress. We accordingly
    first clarify the nature of this statutory defense before turning to Mr. Sheshunoff’s summary-
    judgment evidence.
    Overview of section 4.105
    Section 4.105 of the family code provides:
    (a) A partition or exchange agreement is not enforceable if the party against whom
    enforcement is requested proves that:
    (1) the party did not sign the agreement voluntarily; or
    10
    (2) the agreement was unconscionable when it was signed and, before
    execution of the agreement, that party:
    (A) was not provided a fair and reasonable disclosure of the property or
    financial obligations of the other party;
    (B) did not voluntarily and expressly waive, in writing, any right to
    disclosure of the property or financial obligations of the other party
    beyond the disclosure provided; and
    (C) did not have, or reasonably could not have had, adequate knowledge
    of the property or financial obligations of the other party.
    (b) An issue of unconscionability of a partition or exchange agreement shall be
    decided by the court as a matter of law.
    (c) The remedies and defenses in this section are the exclusive remedies or
    defenses, including common law remedies or defenses.
    See Tex. Fam. Code Ann. § 4.105(a). There is no dispute on appeal that the Marital Property
    Agreement is a “partition or exchange agreement” within the meaning of section 4.105.
    Language parallel to that in section 4.105 appears in section 4.006 of the family code,
    which governs enforceability of premarital, or “antenuptual,” agreements. See Tex. Fam. Code Ann.
    § 4.006 (West 1998). Subsections (a) and (b) of each provision track the language of the Uniform
    Premarital Agreement Act. See Unif. Premarital Agreement Act § 6, 9C U.L.A. 48-49 (2001); see
    also In re Marriage of Bonds, 
    5 P.2d 815
    , 821-826 (Cal. 2000) (reviewing record of proceedings of
    National Conference of Commissioners on Uniform State Laws in adopting Uniform Premarital
    Agreement Act). These portions of the Uniform Act evolved from a debate between commissioners
    who desired certainty in the enforcement of marital property agreements and those who urged that
    such agreements should be routinely scrutinized for substantive fairness. See In re Marriage of
    11
    
    Bonds, 5 P.2d at 825
    . The former view dominated the debate: the Act provided that a premarital
    agreement that was voluntarily executed would be enforced, even if unconscionable, as long as the
    opposing party knew or should have known of the other party’s assets, or waived such disclosure.
    
    Id. The commissioners
    considered that the voluntariness of a premarital agreement may turn, in part,
    upon whether the agreement was entered into knowingly, in the sense that the parties understood the
    terms or basic effect of the agreement. 
    Id. Before the
    Texas Legislature adopted our version of the Uniform Act, Texas law had
    required a party seeking to enforce a marital property agreement to prove, by clear and convincing
    evidence, that the other party had given informed consent and that the agreement had not been
    procured by fraud, duress, or overreaching. Act of June 18, 1987, 70th Leg., R.S., ch. 678, § 1, sec.
    5.46, 1987 Tex. Gen. Laws 2530, 2530-31; see Williams v. Williams, 
    720 S.W.2d 246
    , 248 (Tex.
    App.—Houston [14th Dist.] 1986, no writ).7 Dissatisfaction with this difficult burden of proof led
    to the legislature’s adoption of the Uniform Act in 1987. See W. Fred Cameron, Robert S. Hoffman
    & Allen V. Ytterberg, Marital and Premarital Agreements, 39 Baylor L. Rev. 1095, 1102 (1987).
    By shifting the burden of proof to the party opposing enforcement and by adopting the Uniform
    Act’s concept that voluntarily executed marital property agreements should be enforced even if
    7
    This statute represented an expansion of the rights of Texans to alter the status of
    community or separate property. Throughout the nineteenth and early twentieth centuries, Texas
    courts had construed the constitutional and statutory provisions governing community property in
    a manner that sharply limited the ability of married persons or persons intending to marry to alter the
    status of community or separate property by agreement. See generally W. Fred Cameron, Robert S.
    Hoffman & Allen V. Ytterberg, Marital and Premarital Agreements, 39 Baylor L. Rev. 1095, 1100
    (1987). In 1980, the voters approved a constitutional amendment allowing greater freedom in this
    area. Tex. Const. art. XVI, § 15. To implement this amendment, the legislature enacted sections
    5.41 and 5.42 of the family code, described above. 
    Cameron, supra, at 1101-02
    .
    12
    unconscionable (unless inadequate disclosure can be proven), the Texas Legislature manifested a
    strong policy preference that marital property agreements should be enforced whenever persons who
    are married or intend to marry voluntarily enter into them. See Beck v. Beck, 
    814 S.W.2d 745
    , 749
    (Tex. 1991) (public policy dictates that premarital agreements should be enforced), cert. denied, 
    503 U.S. 907
    (1992); Grossman v. Grossman, 
    799 S.W.2d 511
    , 513 (Tex. App.—Corpus Christi 1990,
    no writ) (premarital agreements are presumptively valid). Barring constitutional impediments, we
    must defer to these legislative policy pronouncements. See Battaglia v. Alexander, No. 02-0701, 48
    Tex. Sup. J. 720, 2005 Tex. LEXIS 419, at *62 (May 27, 2005).
    As originally enacted, sections 4.006 and 4.105, like the Uniform Act, contained only
    subsections (a) and (b). See Act of June 1, 1987, 70th Leg., R.S., ch. 678, § 1, secs. 5.46, .55, 1987
    Tex. Gen. Laws 2530, 2530-31. In 1993, however, the legislature departed from the Uniform Act
    and added subsection (c) to each. See Act of April 30, 1993, 73d Leg., R.S., ch. 136, §§ 1, 2, 1993
    Tex. Gen. Laws 283, 283. This amendment apparently responded to Daniel v. Daniel, in which our
    sister court in Houston held that, absent explicit legislative provision to the contrary, the involuntary
    execution and unconscionability defenses should be construed to “simply provide[] an additional
    statutory remedy for persons challenging property agreements executed pursuant to the Family Code”
    and not “to replace all common law defenses.” 
    779 S.W.2d 110
    , 114 (Tex. App.—Houston [1st
    Dist.] 1989, no writ). Thus, the Daniels court concluded that parties could assert both the statutory
    defenses under section 4.105 and common-law contractual defenses against the enforcement of
    partition and exchange agreements. 
    Id. at 114.
    In subsection (c), the legislature supplied the explicit
    legislative intent found lacking by the Daniels court, providing that the “remedies and defenses in
    13
    this section are the exclusive remedies or defenses, including common law remedies or defenses.”
    Tex. Fam. Code Ann. § 4.105(c); see House Comm. on Judicial Affairs, Bill Analysis, Tex. H.B.
    1274, 73d Leg., R.S. (1993) (purpose of amendment was to clarify “existing law . . . by explicitly
    stating that remedies for violations of and defenses to such agreements which are listed by statute
    are the exclusive remedies and defenses available”).
    Involuntary execution and common-law defenses
    While maintaining that proof of fraud and duress is also evidence of involuntary
    execution, Mr. Sheshunoff asserts that involuntary execution “is a broader, less specific defense”
    than fraud and duress and that he accordingly does not necessarily have to prove each common-law
    element of either defense to prove involuntary execution. In contrast, Ms. Sheshunoff seems to
    construe subsection (c) of section 4.105 to foreclose the possibility that proof of a common-law
    defense like duress or fraud could also be proof of involuntary execution, though elsewhere she has
    appeared to concede that proof of duress might be proof of involuntary execution.
    To ascertain the relationship between involuntary execution and fraud or duress, we
    first examine the meaning of “voluntarily” in section 4.105. Neither the family code nor the Uniform
    Act defines “voluntarily,” nor does the legislative history of either provide much guidance regarding
    the intended meaning of the term. We can obtain some guidance from dictionary definitions.8 The
    8
    We may rely on definitions listed in commonly used dictionaries to discern the plain
    meaning of terms in the statute. See Powell v. Stover, No. 03-1154, 
    48 Tex. Sup. Ct. J. 780
    , 2005
    Tex. LEXIS 417, at *9-10 (May 27, 2005); Texas Dep’t of Protective & Regulatory Servs. v. Mega
    Child Care, Inc., 
    145 S.W.3d 170
    , 196 (Tex. 2004).
    14
    ordinary meaning of “voluntarily,” as reflected in dictionary definitions, entails (1) intentional action,
    as opposed to inadvertent or accidental action, (2) that is the product of the exercise of free will.9
    The official comments accompanying the Uniform Act suggest that common-law
    concepts including duress, lack of capacity, fraud, and undue influence, along with the parties’
    relative bargaining power and knowledge regarding the meaning and effect of the agreement, could
    bear upon the ultimate determination of voluntariness. See Marriage of 
    Bonds, 5 P.3d at 824-25
    (concluding that “the question is viewed as one involving such ordinary contract defenses as fraud,
    undue influence, or duress, along with some examination of the parties’ knowledge of the rights
    being waived, or at least knowledge of the intent of the agreement”); Marriage of Shirilla, 
    89 P.3d 1
    , 13 (Mont. 2004) (“The party seeking to avoid a premarital agreement may prevail by establishing
    that the agreement was involuntary, and that evidence of lack of capacity, duress, fraud, and undue
    influence, as demonstrated by a number of factors uniquely probative of coercion in the premarital
    9
    Webster’s Third New International Dictionary defines “voluntarily” as “in a voluntary
    manner: of one’s own free will: spontaneously,” and “voluntary” as “proceeding from the will:
    produced in or by an act of choice,” “performed, made or given of one’s own free will,” “done by
    design or intention: not accidental,”and “acting of oneself: not constrained, impelled, or influenced
    by another.” Webster’s Third New International Dictionary 2564 (1986). Similarly, the American
    Heritage Dictionary defines “voluntary” as “[a]rising from one’s own free will: acting on one’s own
    initiative,” “normally controlled by or subject to individual volition,” “[c]apable of exercising will,
    volitional,” and “[a]cting or performed without external persuasion or compulsion.” American
    Heritage Dictionary 1436 (1973).
    Some definitions, moreover, indicate that voluntariness implies knowledge of “essential
    facts.” Black’s Law Dictionary defines “voluntarily” as “[d]one by design or intention, intentional,
    proposed, intended or not accidental, intentionally and without coercion,” and “voluntary” as
    “[u]nconstrained by interference; unimpelled by another’s influence; spontaneous; acting of oneself.
    Done by design or intention. Proceeding from the free and unrestrained will of the person. Produced
    in or by an act of choice. Resulting from free choice. The word, especially in statutes, often implies
    knowledge of essential facts.” Black’s Law Dictionary 813 (7th ed. 1999).
    15
    context, would be relevant in establishing the involuntariness of the agreement.”). Some courts,
    moreover, have equated voluntariness under the Uniform Act with “procedural fairness,” which takes
    account of such factors as coercion, duress, undue influence, and the parties’ relative bargaining
    power and sophistication. See Marriage of 
    Bonds, 5 P.3d at 826-27
    .
    Texas courts have construed “voluntarily” under sections 4.105 and 4.006 in a
    generally consistent manner. In Nesmith v. Berger, for example, we assumed without deciding that
    the appellant’s definition of “voluntarily,” derived from common-law duress concepts, controlled
    our inquiry under section 4.006: “an action is taken by design, intentionally, purposefully, by choice,
    of one’s own accord, or by the free exercise of will.” 
    64 S.W.3d 110
    , 113-16 (Tex. App.—Austin
    2001, pet. denied) (citing Prigmore v. Hardware Mut. Ins. Co. of Minn., 
    225 S.W.2d 897
    , 899 (Tex.
    Civ. App.—Amarillo 1949, no writ)).10 We applied this definition to an involuntary execution claim
    predicated on a husband’s threat not to go on a planned honeymoon unless his wife first signed a
    premarital agreement. 
    Id. at 11-15.
    Citing evidence of the parties’ mutual desire to enter into such
    an agreement, the wife’s motives for entering into the agreement, bargaining over terms, and both
    parties’ subsequent compliance with the agreement, we overruled a great weight and preponderance
    challenge to the trial court ruling enforcing the agreement. 
    Id. We concluded
    that “[i]n light of the
    bargaining that accompanied every step of the relationship between the parties before and during
    their marriage, we cannot say that [the husband’s] proposed bargain to finalize the terms of the long-
    10
    This definition had been suggested by the party opposing enforcement of a premarital
    agreement. Because we ultimately held that she had acted voluntarily even under her proposed
    definition, we did not need to consider the validity of that definition. Nesmith v. Berger, 
    64 S.W.3d 110
    , 113-16 (Tex. App.—Austin 2001, pet. denied).
    16
    contemplated agreement before leaving on a honeymoon exerted such undue influence as to deprive
    [the wife] of her free will in signing the agreement.” 
    Id. at 115
    (emphasis added); see also Marsh
    v. Marsh, 
    949 S.W.2d 734
    , 740-43 (Tex. App.—Houston [14th Dist.] 1997, no pet.) (in reviewing
    unconscionability defense, considering whether evidence of threats, fraud, overreaching, duress, or
    misrepresentations, as well as parties’ relative sophistication, experience, and bargaining power).11
    In Nesmith, we relied in part on the Fort Worth court’s analysis in Matelski v.
    Matelski, 
    840 S.W.2d 124
    , 128-29 (Tex. App.—Fort Worth 1992, no writ). Matelski, like some
    other decisions from our sister courts, simply equates involuntary execution with common-law
    duress.12 See Osorno v. Osorno, 
    76 S.W.3d 509
    , 510-11 (Tex. App.—Houston [14th Dist.] 2002,
    11
    At least one court has suggested that, when analyzing unconscionability, the Marsh court
    actually examined factors bearing on voluntariness or procedural fairness. Marriage of Bonds, 
    5 P.3d 815
    , 815, 826 & n.9 (Cal. 2000).
    Mr. Sheshunoff also cites an unreported decision from the Dallas Court of Appeals
    addressing a choice of law issue in the enforcement of a Hawaii premarital agreement. See Rathjen
    v. Rathjen, No. 05-93-00846-CV, 1995 Tex. App. LEXIS 3759, at *7-12, *23-24 (Tex. App.—Dallas
    1995, no pet.) (not designated for publication). The court characterized Hawaii law as substantially
    similar to Texas law and suggested that “it is likely that the [agreement] would be equally valid in
    Texas as it is under Hawaii law.” 
    Id. at *24.
    It also stated that “[t]he Hawaii Supreme Court has
    defined lack of voluntariness as the ‘absence of true assent to the agreement due to duress, coercion,
    undue influence, or any other circumstances indicating that the wife did not freely and voluntarily
    enter into the agreement.” 
    Id. at *7.
           12
    The Matelski court described the elements of duress as follows:
    There can be no duress unless there is a threat to do some act which the party
    threatening has no legal right to do. Such threat must be of such character as
    to destroy the free agency of the party to whom it is directed. It must overcome
    his will and cause him to do that which he would not otherwise do, and that
    which he was not legally bound to do. The restraint caused by such threat must
    be imminent. It must be such that the person to whom it is directed has no
    present means of protection.
    Matelski v. Matelski, 
    840 S.W.2d 124
    , 129 (Tex. App.—Fort Worth 1992, no writ) (quoting Dale
    17
    no pet.) (as matter of law, no duress in premarital agreement based on threat by party to commit act
    they have legal right to do).13
    The ordinary meaning of “voluntary,” the legislative history and application of the
    Uniform Act, and the manner in which Texas courts have construed the term compel us to agree with
    Mr. Sheshunoff—although the presence of such factors as fraud, duress, and undue influence may
    bear upon the inquiry, Mr. Sheshunoff does not have to prove each element of these common-law
    defenses to establish the ultimate issue of involuntary execution. See 
    Daniel, 779 S.W.2d at 114
    &
    n.4 (observing that involuntary execution “alleviates the need for proof of all elements required in
    common law defenses,” such as knowledge or reliance elements of fraud). We implied as much in
    Nesmith, where we looked not to the elements of common-law defenses but directly to the
    v. Simon, 
    267 S.W. 467
    , 470 (Tex. Comm’n App. 1924, judgm’t adopted)).
    13
    Both parties rely on Blonstein v. Blonstein, which suggested some other comparisons
    between the involuntary execution defense and various common-law defenses. 
    831 S.W.2d 468
    , 471
    (Tex. App.—Houston [14th Dist.] 1992, writ denied). The court of appeals held that the trial court
    did not abuse its discretion in refusing to separately submit jury issues on duress, overreaching, and
    undue influence because these issues had been subsumed by a broad-form submission inquiring
    whether a spouse “voluntarily execute[d] the marital property agreement.” 
    Id. In the
    court’s view,
    the proposed issues on duress, overreaching, and undue influence each inquired “as to whether David
    Blonstein’s free will was overcome by threats or other acts of Esther Blonstein,” and “[a]sking
    whether David Blonstein acted voluntarily is the same as asking whether he acted by his free will.”
    
    Id. Blonstein also
    went on to hold that requested issues on fraud, estoppel and breach of fiduciary
    duty were subsumed in a broad-form submission inquiring as to the adequate knowledge and
    reasonable disclosure elements of section 4.105’s unconscionability defense. Id.; see Tex. Fam.
    Code Ann. § 4.105(a)(2) (West 1998).
    We observe that the Texas Supreme Court subsequently denied writ of error in a per
    curiam opinion cautioning that it was expressing no opinion regarding the analysis of the jury
    submissions by the court of appeals. 
    848 S.W.2d 82
    (Tex. 1992) (per curiam). Given the supreme
    court’s reservations, we will not rely on the Blonstein court’s comparison of duress, fraud, and the
    statutory defenses.
    18
    controlling issue of whether the party resisting enforcement executed the agreement voluntarily. See
    
    Nesmith, 64 S.W.3d at 114-15
    . This approach is consistent with the text of section 4.105, which
    refers not to common-law concepts but solely to whether the party signed the agreement voluntarily.
    Tex. Fam. Code Ann. § 4.105(a)(1); see Office of the Attorney Gen. of Tex. v. Lee, 
    92 S.W.3d 526
    ,
    528 (Tex. 2002).14
    Ms. Sheshunoff contends that the legislature’s addition of subsection (c) renders
    irrelevant the history and application of the involuntary execution defenses under the Uniform Act.
    We disagree. Subsection (c) was intended to clarify merely that, contrary to Daniels, parties cannot
    assert common-law defenses in addition to the defenses enumerated in section 4.105. It does not
    prohibit us from considering as potential evidence of involuntary execution proof of conduct that Mr.
    Sheshunoff asserts constitutes fraud or duress.
    In sum, we conclude that section 4.105 sets out the exclusive remedies available to
    prevent enforcement of a postmarital agreement, and that, although common-law defenses may
    inform our analysis of “voluntariness,” they will not necessarily control.
    Analysis of the summary-judgment evidence
    Mr. Sheshunoff contends that he has raised genuine issues of material fact regarding
    his involuntary-execution defense with summary-judgment evidence of two series of acts by Ms.
    14
    We have adopted a similar approach in at least one other context—when reviewing the
    voluntariness of a mother’s signing of an affidavit relinquishing her parental rights. See Vela v.
    Marywood, 
    17 S.W.3d 750
    , 762 (Tex. App.—Austin 2000), pet. denied, 
    53 S.W.3d 684
    (Tex. 2001)
    (per curiam) (“Although the face of the affidavit reflects it was signed knowingly and voluntarily,
    we must consider the surrounding circumstances to determine if Corina’s signature on the document
    was procured by misrepresentation, fraud, or the like.”).
    19
    Sheshunoff. First, Mr. Sheshunoff presented affidavit testimony that, during the week before he
    signed the Agreement, Ms. Sheshunoff “began threatening me . . . that unless I signed the
    Agreement, she would withdraw her loan guarantee and have the Bank of America immediately call
    the line of credit for the Sheshunoff companies.” He testified that this event would have been
    “catastrophic to the financial stability of the companies” and would have rendered the companies
    unable to pay salaries, jeopardized over seventy jobs, and risked the loss of key, irreplaceable
    employees.
    Second, Mr. Sheshunoff presented summary-judgment evidence that, while
    negotiating the Agreement, Ms. Sheshunoff and her agents misled him to believe that she, like Mr.
    Sheshunoff, intended to execute the Agreement solely for estate and tax-planning purposes and had
    no intention to actually proceed with a divorce, when in fact she was surreptitiously plotting a
    divorce. He points to evidence that, among other things, Ms. Sheshunoff had assured him that
    executing the Agreement would strengthen their marriage, when she had secretly hired a divorce
    lawyer (in contrast to the estate and tax lawyers each party had retained) while the negotiations were
    still ongoing, and that, a few days before execution, she had the locks at their house changed while
    he was traveling.15 He urges that he never would have agreed to the “draconian” property division
    under the Agreement had he anticipated he and Ms. Sheshunoff would actually divorce.
    As previously suggested, the precise parameters of involuntary execution may not be
    clear in every case, and will tend to depend on the circumstances. In this case, however, we can
    determine that, as a matter of law, Mr. Sheshunoff has failed to raise a fact issue regarding
    15
    Ms. Sheshunoff denies these allegations.
    20
    involuntary execution. We begin by observing that the following facts bearing on involuntary
    execution are undisputed:
    !     The parties were each sophisticated. Mr. Sheshunoff, in fact, has run their
    successful consulting business in the financial services industry for many years;
    !     The parties had executed both a premarital agreement and an earlier post-marital
    property agreement, and understood the general purpose and effect of such
    agreements;
    !     The parties had extensively negotiated the Marital Property Agreement at issue
    over a period of several months;
    !     During the negotiation and execution of the Agreement, each party had the
    assistance of a team of capable counsel, as well as accountants and other
    professional advisors; and
    !     When executing the Agreement, Mr. Sheshunoff and his counsel knew of the
    Agreement’s material terms, including provisions explicitly contemplating that
    the agreed-upon property division would be effective upon the death or divorce
    of the parties.16
    In this context, Mr. Sheshunoff advances two theories of involuntary execution: (1) he was forced
    into signing the Agreement; and (2) he was misled into signing it in the belief that Ms. Sheshunoff
    would not actually seek a divorce and avail herself of her rights to the agreed-upon property division.
    16
    In fact, in August 2002, Duncan Osborne, an attorney who had been working with the
    Sheshunoffs in drafting the Agreement, cautioned them that he was concerned about the disparity
    in the proposed property division:
    because what the two of you agree upon for tax purposes at this time would be
    evidence of proper division in the event of a future dispute involving your
    relative property ownership, we think that it is important for Alex to engage
    separate counsel hired solely to look after Alex’s interests, to go through the
    analysis that has been prepared and explain its potential implications to Alex,
    before final decisions regarding the marital property division are reached.
    21
    To support his first involuntary execution theory, Mr. Sheshunoff presented an
    affidavit in which he claims that Ms. Sheshunoff threatened him that, unless he signed the Marital
    Property Agreement, “she would withdraw her loan guarantee” she had advanced his company, Alex
    Sheshunoff Management, L.P., “and have the Bank of America immediately call the line of credit,”
    leading to dire consequences for the company. He attaches copies of the loan documents, which
    demonstrate that (1) Ms. Sheshunoff, along with Mr. Sheshunoff, was a guarantor on a $1 million
    loan agreement between Bank of America and Alex Sheshunoff Management Services, L.P.;17 and
    (2) the promissory note provided that Bank of America “will have no obligation to advance funds”
    on the company’s revolving line of credit if “any guarantor seeks, claims, or otherwise attempts to
    limit, modify, or revoke such guarantor’s guarantees of this Note or any other loan with Lender.”
    However, this evidence shows, at most, that Ms. Sheshunoff threatened to withdraw her loan
    guarantee and that her doing so would have entitled Bank of America to cut off the line of credit.
    Mr. Sheshunoff offers no proof, and only the conclusory statement in his affidavit, regarding the
    likelihood that Bank of America in fact would have exercised this contractual right, at Ms.
    Sheshunoff’s behest or otherwise.18 Absent such proof, the jury could not reasonably infer—and
    could only speculate—that Ms. Sheshunoff’s alleged threat to withdraw the loan guarantee presented
    the sort of imminent threat that Texas law has considered capable of overwhelming free will and
    17
    Ms. Sheshunoff asserts that Mr. Sheshunoff failed to offer any evidence that she actually
    ever signed such a guarantee. However, the “Notice of Final Agreement” listing the component loan
    documents designates Ms. Sheshunoff as “Guarantor 2,” and is signed by Ms. Sheshunoff as
    “Guarantor.” This evidence, along with Mr. Sheshunoff’s affidavit, raises a fact issue regarding
    whether Ms. Sheshunoff was a guarantor of the loan.
    18
    We further note that Ms. Sheshunoff does not appear to have been the sole or primary
    guarantor on the loan agreement, but was designated “Guarantor 2.”
    22
    rendering Mr. Sheshunoff’s execution of the Marital Property Agreement involuntary. See Wright
    v. Sydow, No. 14-03-00222-CV, 2004 Tex. App. LEXIS 10541, at *15 (Tex. App.—Houston [14th
    Dist.] 2004, pet. denied); King v. Bishop, 
    879 S.W.2d 222
    , 223 (Tex. App.—Houston [14th Dist.]
    1994, no writ); Charping v. Light, 
    578 S.W.2d 462
    , 464 (Tex. Civ. App.—Austin 1979, no writ)
    (quoting Dale v. Simon, 
    267 S.W. 467
    , 470 (Tex. Comm’n App. 1924, judgm’t adopted)). It is thus
    no evidence.19
    As for Mr. Sheshunoff’s second theory of involuntary execution, he does not dispute
    that he and his team of lawyers and advisors knew that the Agreement explicitly provided for the
    property division he now characterizes as “draconian” and that it would be effective if the parties
    divorced. Nor, significantly, does Mr. Sheshunoff claim that he was misled concerning the presence
    of these terms in the Agreement or that they were concealed from him.20 Rather, Mr. Sheshunoff
    contends only that he was misled concerning Ms. Sheshunoff’s subjective intent to avail herself of
    her rights under the Agreement. Although not singularly determinative, it is significant that our
    sister courts have held that this type of conduct, even if proven, would not constitute fraud under
    Texas law. See In re GTE Mobilnet of S. Tex. Ltd. P’ship, 
    123 S.W.3d 795
    , 799-800 (Tex.
    App.—Beaumont 2003, orig. proceeding) (alleged misrepresentations that company would not
    19
    Having concluded that, for the above reasons, Ms. Sheshunoff’s evidence concerning the
    loan guarantee does not raise a fact issue concerning involuntary execution, we need not address Ms.
    Sheshunoff’s arguments predicated on her view that she had the legal right to revoke the guarantee.
    See 
    Osorno, 76 S.W.3d at 510-11
    (as matter of law, no duress based on threat by party to commit
    act they have legal right to do). Nor do we address whether this element of the duress defense
    properly bears upon our analysis of involuntary execution.
    20
    As Ms. Sheshunoff’s counsel suggested during oral argument, the situation might have
    been different had she, for example, surreptitiously switched pages in the Agreement.
    23
    enforce contractual arbitration clause known to parties could not constitute fraudulent inducement
    as matter of law). Similarly, we would impermissibly deviate from the statutory language—and the
    legislature’s manifest intent to facilitate enforcement of marital property agreements—by holding
    that a party who executes a marital property agreement with knowledge and understanding of its
    terms nonetheless did so “involuntarily” because he or she believed the other party would not enforce
    the agreement.
    We accordingly conclude that Mr. Sheshunoff has failed to raise a fact issue regarding
    his involuntary execution defense. Our conclusion is not altered by Mr. Sheshunoff’s assertions that
    Ms. Sheshunoff, as his spouse, owed him a fiduciary duty to be truthful during their negotiations.
    See Buckner v. Buckner, 
    815 S.W.2d 877
    , 880 (Tex. App.—Tyler 1991, no writ). Assuming without
    deciding that such a duty would apply under the circumstances of this case,21 the Texas Legislature
    enacted section 4.105 with the understanding that married spouses owing fiduciary duties to one
    another would negotiate and execute marital property agreements. See Tex. Gov’t Code Ann.
    § 311.023 (West 2005) (court to consider laws on same or similar subjects when construing statutes);
    21
    We disapprove, however, Ms. Sheshunoff’s view that Miller v. Ludeman, 
    150 S.W.3d 592
    ,
    597 (Tex. App.—Austin 2004, pet. denied), stands for a categorical rule that spouses who hire
    separate counsel to negotiate a property division can never owe fiduciary duties to one another.
    Husbands and wives generally owe a fiduciary duty to one another. See Schlueter v. Schlueter, 
    975 S.W.2d 584
    , 589 (Tex. 1998); Matthews v. Matthews, 
    725 S.W.2d 275
    , 279 (Tex. App.—Houston
    [1st Dist.] 1986, writ ref’d n.r.e.). The fiduciary duty arising from the marriage relationship does not
    continue when a husband and wife each hire independent professional counsel to represent them in
    a contested divorce proceeding. Boyd v. Boyd, 
    67 S.W.3d 398
    , 405 (Tex. App.—Fort Worth 2002,
    no pet.); Parker v. Parker, 
    897 S.W.2d 918
    , 924 (Tex. App.—Fort Worth 1995, writ denied).
    Although we cited Boyd in noting that the appellant in Miller conceded that adverse parties who have
    retained professional counsel (including husbands and wives in a suit for divorce) do not owe
    fiduciary duties to one another, we did not adopt the position asserted by Ms. Sheshunoff in this
    appeal. See 
    Miller, 150 S.W.3d at 597
    .
    24
    Argonaut Ins. Co. v. Baker, 
    87 S.W.3d 526
    , 530-31 (Tex. 2002) (quoting Acker v. Texas Water
    Comm’n, 
    790 S.W.2d 299
    , 301 (Tex. 1990) (“A statute is presumed to have been enacted by the
    legislature with complete knowledge of the existing law and with reference to it.”)).
    Notwithstanding these duties, the legislature manifested the strong policy preference that voluntarily
    made marital property agreements be enforced. We have concluded that Mr. Sheshunoff has not
    raised a fact issue regarding the sort of involuntary execution the legislature could have intended to
    bar enforcement of marital property agreements. That conclusion would control even in the face of
    the fiduciary duties Mr. Sheshunoff claims.
    We accordingly hold that the district court did not err in granting Ms. Sheshunoff’s
    motion for partial summary judgment. We overrule Mr. Sheshunoff’s first issue.
    Striking of new defenses and counterclaims
    In his second issue, Mr. Sheshunoff contends that the district court abused its
    discretion in striking the defenses and counterclaims he raised in his amended pleadings several
    months after the district court had granted partial summary judgment. When a trial court strikes a
    party’s pleadings, we employ an abuse-of-discretion standard. See Porter v. Nemir, 
    900 S.W.2d 376
    ,
    384 (Tex. App.—Austin 1995, no writ). We reverse a trial court for abusing its discretion only if
    we find that the court acted in an unreasonable or arbitrary manner, Beaumont Bank, N.A. v. Buller,
    
    806 S.W.2d 223
    , 226 (Tex. 1991), or “without regard for any guiding rules or principles.” Owens
    Corning Fiberglas Corp. v. Malone, 
    972 S.W.2d 35
    , 43 (Tex. 1998) (quoting City of Brownsville
    v. Alvarado, 
    897 S.W.2d 750
    , 754 (Tex. 1995)); Downer v. Aquamarine Operators, Inc., 
    701 S.W.2d 238
    , 241-42 (Tex. 1985). A corollary principle is that we may not reverse for abuse of discretion
    25
    merely because we disagree with a decision of the trial court, if that decision was within the trial
    court’s discretionary authority. 
    Downer, 701 S.W.2d at 242
    .
    Mr. Sheshunoff did not assert his new defenses and counterclaims until after the
    district court had granted Ms. Sheshunoff’s partial summary-judgment motion, nor did he assert
    them as grounds for denying the first summary-judgment motion. Our disposition of Mr.
    Sheshunoff’s second issue thus turns principally on the scope of Ms. Sheshunoff’s partial summary-
    judgment motion and whether the district court, by granting it, foreclosed the defenses and
    counterclaims he later attempted to raise. See Brownlee v. Brownlee, 
    665 S.W.2d 111
    , 112 (Tex.
    1984) (affirmative defense must be raised with some evidence to avoid summary judgment); Voice
    of the Cornerstone Church Corp. v. Pizza Prop. Partners, 
    160 S.W.3d 657
    , 670-71 (Tex.
    App.—Austin 2005, no pet.); Martin v. First Republic Bank, Fort Worth, N.S., 
    799 S.W.2d 482
    , 488
    (Tex. App.—Fort Worth 1990, writ denied) (counterclaim for reformation or recision of contract
    obligations not properly filed after court has enforced obligations on summary judgment). Mr.
    Sheshunoff asserts that Ms. Sheshunoff’s motion for partial summary judgment challenged only the
    validity of his involuntary execution and unconscionability defenses, and therefore did not preclude
    him from subsequently raising other defenses and his counterclaims. We disagree.
    Ms. Sheshunoff explicitly sought summary judgment to “declare the February 8,
    2003, ‘Marital Property Agreement’ executed by and between the parties fully enforceable.”
    Although her motion emphasizes the two statutory defenses and did not specifically address any
    others, she also argued that there are no other defenses to the enforcement of the Agreement. Her
    motion adequately supports the district court’s partial summary judgment that the Marital Property
    Agreement is fully enforceable. Because Mr. Sheshunoff failed to raise any additional defenses
    26
    before this ruling, they are untimely and cannot bar summary judgment. See Voice of the
    Cornerstone Church 
    Corp., 160 S.W.3d at 670-71
    .
    Alternatively, we also hold that subsection (c) of section 4.105 independently bars
    Mr. Sheshunoff’s attempt to assert common-law defenses and counterclaims distinct from the
    statutory involuntary execution and unconscionability defenses. See Tex. Fam. Code Ann.
    § 4.105(c). In a post-submission letter, Mr. Sheshunoff conceded that his common-law defenses
    were barred by subsection (c). We conclude that his common-law counterclaims for rescission or
    damages are similarly barred, as such relief would simply undo the bargain reflected in the Marital
    Property Agreement, which the legislature has mandated must be enforced unless the exclusive
    statutory defenses are proven.
    We overrule Mr. Sheshunoff’s second issue.
    Reformation claims
    In his third issue, Mr. Sheshunoff argues that the district court abused its discretion
    in severing his post-summary judgment reformation counterclaims and referring them to arbitration.
    Mr. Sheshunoff contends that Ms. Sheshunoff had waived her right to arbitrate the claims because
    litigation had progressed for over a year by the time she first sought to compel arbitration in May
    2004. As Ms. Sheshunoff observes, however, Mr. Sheshunoff did not raise his reformation
    counterclaims until April 30, 2004,22 only a month before she sought arbitration. Under these facts,
    we cannot conclude that the district court abused its discretion in failing to find that Ms. Sheshunoff
    had waived her right to arbitrate Mr. Sheshunoff’s reformation counterclaims. See In re Automated
    22
    See supra, n.4.
    27
    Collection Techs., 
    156 S.W.3d 557
    , 559 (Tex. 2004) (quoting In re Bruce Terminix Co., 
    988 S.W.2d 702
    , 704 (Tex. 1998) (“even substantially invoking the judicial process does not waive a party’s
    arbitration rights unless the opposing party proves that it suffered prejudice as a result”)). We
    overrule Mr. Sheshunoff’s third issue.
    Remaining issues
    Mr. Sheshunoff’s fourth issue, challenging the district court’s striking of his jury
    demand, and his fifth issue, challenging the final summary judgment, are each predicated on his
    prevailing in his first three issues. Because we have overruled those issues, we likewise overrule Mr.
    Sheshunoff’s fourth and fifth issues.
    CONCLUSION
    We overrule all of Mr. Sheshunoff’s issues and affirm the district court’s rulings (1)
    granting partial summary judgment, (2) striking Mr. Sheshunoff’s subsequently-asserted defenses
    and counterclaims for damages and rescission, (3) severing and compelling arbitration on his
    reformation counterclaims, (4) striking his jury demand, and (5) granting final summary judgment
    in favor of Ms. Sheshunoff.
    __________________________________________
    Bob Pemberton, Justice
    Before Chief Justice Law, Justices B. A. Smith and Pemberton
    Affirmed
    Filed: July 29, 2005
    28