The ruling allows foreign companies to obtain the personal details of Swedish citizens, which is denied to domestic companies under Swedish law.
The court ruled that a Norwegian employment agency had the right to obtain information on some 181,000 Swedish nurses working with the National Board of Health and Welfare, despite the Board's initial refusal to do so.
However, as the law stands, it does not apply to companies based outside Sweden.
Speaking to Swedish Radio News, legal expert Dennis Töllborg says that under the ruling even Swedish companies could obtain such information by setting up subsidiaries registered abroad.
According to Thomas Bull however, spokesman for the Supreme Administrative Court, the ruling does not apply to EU member states because the bloc has reciprocal privacy protection agreements in place.