1. A violation of procedural law or rules of procedure that occurs during legal proceedings, rendering the process invalid or defective
The court found procedural illegality in how the evidence was collected during the investigation.
O tribunal constatou ilegalidade processual na forma como a prova foi coletada durante a investigação.
2. In legal context, any failure to comply with established procedural requirements that can affect the validity of judicial acts or decisions
The defendant raised an objection based on procedural illegality due to improper notification.
O réu levantou uma objeção com base na ilegalidade processual por notificação imprópria.