Questão jurídica principal
Whether applying the 1997 cemetery regulation to pre-existing concession terms was unconstitutional retroactivity or arbitrary.
Decisão extraída
The immediate application of the new time limits to ongoing concessions was permissible as improper retroactivity and was not arbitrary.
Fundamentação extraída
The old duration rules were not acquired rights; the regulation validly modified durable administrative effects. The public interest in sufficient cemetery space and the elapsed time justified adapting existing concessions.