Google won a lengthy court battle against LV over the right to sell the LV name to LV competitions in keyword ads.
Google wins Louis Vuitton trademark case | Media | The Guardian
Misappropriating brands into keywords and page titles would seem to be less of an infringement than what Google won the right to do. In fact, ads sold on your page could be argued to simply be another form of keyword advertising already covered by the Google vs LV precedent.