Contact GOOGLE. Tell them you have an issue with someone using your trademark.
All you have to do is submit paperwork that proves you own the trademark, and that's it......suddenly, all your competitors ads will be rejected for "containing a trademarked term."
I know because not only have I prevented others from using our trademark, others have prevented us from using their's.
DON'T WASTE MONEY ON A LAWYER, you don't need to!
Google will let anyone bid on any term. Period.
last i read, you do have some recourse through google if you are outside of the u.s. and canada...
Here's some info from the AdWords Help Center for those who are intersted in digging into it:
Trademarks
[adwords.google.com...]
How do I file a trademark complaint in the U.S. or Canada?
[adwords.google.com...]
How do I file a trademark complaint outside the U.S. and Canada?
[adwords.google.com...]
AWA