My ad is not competing, but a portal about that product.
Now, when I go and search for "trademark" alone, nothing more than an ad for that company appears. But when I look for "cool+trademark" or "trademark+for+sale", or similar combinations a lot of advertisers appears using the trademark in the ad text!
I don't know if they have an special permission or what, but I don't think so, since I see some CPC arbitragers on the ads.
What explaination have this?