I see there's still much confusion regarding the LEGAL STATUS of ARGUIDO.
Every step of a criminal investigation is under the Pubblic Ministry's control - police don't make their cases like in UK or US and the whole process takes 3/4 steps:
Inquiry
Instruction (optional)
Trial
Sentencing
The Inquiry corresponds to the investigation where, by initiative of the PJ or the suspect/interrogated/witness, you may be attributed or require the ARGUIDO status. Sometimes witness may require that status regarding their potential involvement in other cases/affairs that may rise up during the questionning...
If the ARGUIDO is never charged he never becomes a DEFENDANT (this is already part of a trial, but in PT it's common to call defendants as ARGUIDOS because they maintain the same rights).
In the same sense if a Case is Archived after Inquiry, because there is not enough evidence to charge, the ARGUIDO status is lifted, but the suspects remain so until they are cleared by a new investigation or a trial..
That's what I've been trying to explain.
I find "defendant" as a translation for "arguido" prior to trial to be inaccurate and potentially libellous.
The only point I partly disagree with is your last one:
"In the same sense if a Case is Archived after Inquiry, because there is not enough evidence to charge, the ARGUIDO status is lifted, but the suspects remain so until they are cleared by a new investigation or a trial.."Of course, arguidos
may remain suspects if the inquiry was shelved due to insufficient evidence to charge them. And they would become arguidos again at any point if sufficient new evidence warranted it.
In the McCann case, there was NO evidence of the former arguidos' involvement in the crime (cf the legal summary). The investigation could only be reopened (beyond the 20-day period following the ruling) if new, credible evidence / leads warranted it. The PJ reopened the investigation in October 2013, following their own review of the case that started in May 2011. In this case, the new evidence (and / or valid leads to pursue) is not related to the McCanns' involvement (the PT authorities have already stated that they are not suspects):
"The Judiciary Police (PJ) reopened the investigation concerning the disappearance of Madeleine McCann and they guarantee that this time the parents of the girl who disappeared in Praia da Luz, Algarve, days before her fourth birthday, on May 3, 2007, are not suspects."DN 25 October 2013
http://joana-morais.blogspot.com/2013/10/pj-creates-new-team-to-investigate.html