HB 3650 modifies procedures for serving legal notices on deceased persons under the Texas Estates Code. If a person requiring service has died, the bill requires service on: The personal representative of the deceased person’s estate; Distributees of the estate if no personal representative exists; Unknown distributees if no estate administration has been opened; Applicants must file an affidavit of potential distributees, and courts may appoint an attorney ad litem to protect the interests of unknown distributees. The bill ensures proper notification in probate and estate-related litigation.