Portugal permanent residency requirement

@jonesdn2020 

Article 85 has been subject to two amendments since it was written in 2007, firstly in 2012 and then again in 2017, neither of which altered the text of 85.2(b).

I've not heard of a permanent resident's permit for non EU citizens being issued for 10 years, Article 77 still says they're issued for 5 years.
Permanent resident's permits for EU citizens are issued for 10 years.
I suspect their non EU family member might also get a 10 year permit as their initial permit lasts for 5 years to match the residency of their EU citizen spouse.

@jonesdn2020 

EU Regulations = a law immediately in force in every EUMS that can be enforced by national or EU courts. (e.g. EU Regulation on permitted driving times and minimum rest times for drivers of large goods and passenger vehicles)

EU Directive = a law that applies to all EUMS but they have to write national law to bring it into force and transgressions against that national law are dealt with by national courts. If an EUMS fails to adopt an EU Directive into national law the EUMS can be taken to the EU court for failing to implement it. (e.g. EU Directive on mutual recognition of driving licences)

National law = law that only apply in national territory (sometimes with exemptions for the autonomous regions).

Autonomous Region law = law that only apply in the relevant autonomous region (Azores, Madeira).

Municipal law = law that only apply in the municipality.

Jurisprudence = (judicial prudence) where cases have gone through the appeal process/supreme court and high ranking judges have adjudicated how the law is to be interpreted. (e.g. the Supreme court case deciding the law allowing Airbnb doesn't allow them in primarily residential condominiums).

Modifications/adjustments = amendments to national law (often used to comply with changes in EU Regulations/Directives).

So when a PT law refers to it being written to comply/adopt an EU Regulation/Directive you needn't worry about the EU law except if you think PT hasn't implemented the EU law correctly (it happens often both in PT and the other EUMS).