Disputes That Require Structured Legal Response

Mastanduno Law, LLC represents clients in contested estate matters when questions arise about a will's validity, the circumstances under which it was executed, or how the estate is being administered. Disputes often emerge during periods of grief, and the legal process requires careful navigation of probate court procedures alongside family dynamics. Steven Mastanduno's background in dispute resolution allows the firm to approach contested matters with a framework that evaluates whether negotiation, mediation, or litigation serves the client's interests most effectively in Portland probate proceedings.


Will contests typically involve allegations about undue influence, lack of testamentary capacity, improper execution, fraud, or concerns about how a personal representative is managing the estate. Each claim requires specific evidence and follows procedural requirements within Oregon's probate system. The legal analysis begins with reviewing the will itself, the circumstances of its creation, and the factual basis for the challenge or defense.

How Contested Estate Matters Are Evaluated and Pursued

Representation begins with a detailed review of the disputed will, any prior testamentary documents, the timeline of the decedent's estate planning, and the relationships among potential beneficiaries and heirs. Oregon law requires will contests to be filed within specific time frames after the will is admitted to probate, and certain parties have legal standing to bring challenges while others do not. The firm evaluates the factual and legal foundation for a contest or defense, gathering documentation such as medical records, financial transactions, correspondence, and witness accounts that may support claims about capacity, influence, or improper conduct.


Once representation begins, you receive a case strategy that outlines the procedural steps, the discovery process, and the available avenues for resolution. Steven Mastanduno's dispute-resolution experience means contested matters are approached with an understanding of when negotiation or mediation can achieve resolution and when litigation becomes necessary to protect your rights. The firm litigates contested probate cases when settlement discussions do not produce acceptable outcomes, presenting evidence and argument in Multnomah County Probate Court or other Oregon probate venues as required.


Will contests can also involve disputes about estate administration even when the will's validity is not challenged, such as disagreements over asset distribution, personal representative conduct, or interpretation of will provisions. These administrative disputes require different procedural approaches than validity challenges but still demand evidence-based legal advocacy within the probate court system.

What Families Facing Estate Disputes Need to Know

Contested estate matters raise procedural and evidentiary questions that affect how disputes are resolved, particularly in Portland probate cases where family dynamics intersect with legal standards.

  • What grounds exist to challenge a will in Oregon?

    Challenges are based on lack of testamentary capacity, undue influence, fraud, improper execution, or revocation. Each ground requires specific evidence, such as medical records demonstrating cognitive impairment at the time of signing, documented instances of coercion or manipulation, proof that required witnesses were not present, or evidence that the decedent created a later will or took actions to revoke the disputed document.

  • How does the probate court evaluate undue influence claims?

    Courts examine the relationship between the decedent and the alleged influencer, the decedent's vulnerability, whether the influencer had access and opportunity to exert pressure, and whether the will's provisions are consistent with the decedent's prior intentions or reflect a sudden departure from expected distributions. Evidence may include witness testimony about the decedent's statements, financial records showing unusual transactions, and documentation of the influencer's involvement in the estate planning process.

  • When must a will contest be filed in Portland?

    Oregon law requires contests to be filed within the statutory period after the will is admitted to probate. Missing this deadline typically bars the challenge regardless of the merits, so timing is a critical procedural consideration that requires prompt legal consultation after you become aware of a probate proceeding.

  • What happens during the discovery process in a contested estate case?

    Both parties gather evidence through document requests, depositions of witnesses such as the attorney who drafted the will or caregivers who interacted with the decedent, and expert testimony from medical professionals or handwriting analysts when relevant. Discovery allows each side to evaluate the strength of claims and defenses and often informs settlement negotiations.

  • How does mediation function in contested probate matters?

    Mediation provides a structured process where a neutral third party facilitates negotiation between disputing family members or beneficiaries. It allows parties to discuss settlement terms such as revised distributions, payment arrangements, or clarifications of will provisions without the cost and uncertainty of trial, though it requires all parties to participate voluntarily and in good faith.

Mastanduno Law, LLC approaches contested estate matters with a focus on protecting your legal interests while evaluating all procedural options for resolution. Arrange a case consultation to review your specific concerns about a contested will or estate administration in Oregon.