Key facts: Michigan will contests are governed by the Estates and Protected Individuals Code; interested persons with standing may file objections after the mandatory 30-day waiting period; estates exceeding $50,000 proceed through formal probate with enhanced procedural protections; contestants bear the burden of proof by clear and convincing evidence; valid grounds include lack of testamentary capacity, undue influence, fraud, duress, and improper execution; settlement and mediation remain available throughout litigation.