Referring to its judgment in Google , the Court observes that the trade
mark’s function of indicating origin is adversely affected where the advertisement displayed
on the basis of the keyword corresponding to the trade mark does not enable reasonably well-informed and reasonably observant internet users, or enables them only with difficulty, to ascertain whether the goods or services referred to by the advertisement originate from the proprietor of the trade mark or an undertaking economically connected to it or, on the contrary, ori
...[+++]ginate from a third party.