A non-EEA citizen with the EU's PR, can only sponsor a non-EEA citizen under UK immigration rules. They cannot use the EU Directive of free movement, because they are not an EEA citizen.
I kindly request that you please provide a reference for your statement, or point me in the right direction. Because if this is true, then that means I was ill-advised by an OISC certified immigration advisor and I would like to file a complaint.
EDIT: Per Home Office website (
https://www.gov.uk/uk-residence-eu-citizens/permanent-residence [nofollow] ),
"Permanent residence after 5 years
You automatically get permanent residence status after living in the UK for 5 years as a ‘qualified person’.
You only need to apply for a document that proves your permanent residence status if
you want to apply for British citizenship
you want to sponsor your partner’s visa application under the Immigration Rules"
Am I only reading that in my favor, because I don't see anything about the partner being outside the EEA?