The furniture giant protested when the far-right party presented an "Ikea plan" for a changed migration policy in 2022, with instructions drawn in typical Ikea style.
The party and the association that ran the campaign believed they could borrow the concept on the grounds of freedom of expression - something the EU court, however, disagreed with in its ruling on Tuesday.
The use may "give the impression that the trademark owner agrees with the political message being conveyed or with the political views being advocated," it says, among other things, in a press release.
It will now be up to the Belgian court to decide how the case will proceed.
