Any person desiring notice of any order or filing in a protective proceeding described in this part involving a person in whom he is interested may file a request for notice with the court stating his name, the name of the alleged disabled person, the nature of the requesting person’s interest, and his address or that of his attorney. Upon payment of any fee required by statute or court rule, the clerk shall mail a copy of the request to the conservator if one has been appointed, or to the petitioner if there is no conservator. A request is effective only as to matters occurring after its filing.