The PCR test “is unable to determine, beyond reasonable doubt, that a positive result corresponds, in fact, to the infection of a person by the SARS-CoV-2 virus”, stated the Lisbon Court of Appeal on 11 November 2020.
Proc. Nº 1783/20.7T8PDL.L1

PROCESSO N.º 1783/20.7T8PDL.L1-3

Most importantly, the judges decided that a single positive PCR test cannot be used as an effective diagnosis of infection. If this decision is a precedent remains an open question.

The judges referred to the following publication:
Surkova, E., Nikolayevskyy, V., & Drobniewski, F. (2020). False-positive COVID-19 results: hidden problems and costs. The Lancet Respiratory Medicine, 8(12), 1167–1168. doi.org/10.1016/S2213-2600(20)30453-7
Fulltext: www.thelancet.com/journals/lanres/article/PIIS2213-2600(20)30453-7/fulltext

In Germany this judgement is now debated (obviously not by the mainstream media – they prefer to ignore it as long as possible), but see: www.br.de/nachrichten/deutschland-welt/faktenfuchs-irrefuehrende-meldungen-ueber-pcr-urteil-in-portugal,SHo3Nlm