Supreme Court reversed appeal, ruling that using refurbished parts violates consumer collective interests under competition law.

The Supreme Court of Poland reversed the appellate court's decision and remanded the case for a substantive ruling on the merits. The appellant argued that using refurbished parts did not violate consumer interests because they met identical technical specifications, while the respondent maintained that the warranty terms were not properly communicated to buyers. The court held that the appellate court erred by merely setting aside the administrative decision without issuing a substantive judgment on whether the practice actually infringed upon collective consumer interests.