In March 2012, Massachusetts adopted the Massachusetts Uniform Probate Code. Those representing either petitioners or contestants in will must be aware of changes brought about by the new law. This includes the expansion of categories of people with standing to contest wills. For example, stepchildren may gain eligibility depending on the individual case details. New burdens and responsibilities have been placed on the conservators, guardians, and other trustees of persons who may be eligible to contest wills. All operative provisions of the MUPC should be reviewed prior to the filing of, or commencing the defense of, any will contest.