The first time, I checked by searching and found that many ads were still displaying the supposedly forbidden brand. I wrote Adwords and they told me they eventually will shut them down.
But, now I have another round of disapproved ads for another different ads, and this ads had been disapproved for two months. If I search from my country (Mexico) or from the USA, I see ads. Many ads containing the brand.
How does one get that permission?
According to what I read in Google, you have to write the brand owner and ask permission, but from what I see in the SERPS, many are very small advertisers, that I can tell didn't write to Big Software Manufacturer to get a written permission.
Trademark restrictions in AdWords aren't always just blanket prevention of everyone (except a few approved advertisers) from using the term in ad text. In one case, I even had a specific domain flagged -- if I used the flagged display URL/landing page, I got an error message about a trademark term in the ad text...if I used the same ad text with a different display URL/landing page, everything was fine. So it seems Google is quite flexible in the ways it can restrict advertisers from using trademarked terms.
When I had the domain flagged, it was a situation similar to your current issue with my account getting the trademark restriction but many other advertisers still using the same term. I found the CSRs to be useless when I was trying to figure out the problem...they gave me the same "the other advertisers will be reviewed also" lie. I eventually figured out on my own that it was just a specific domain I was using that was flagged (because the domain also had a trademark issue, as I later found out).
[edited by: Rehan at 2:03 am (utc) on April 14, 2008]
I know I've had ads in the past that have run for months with a TM term in them and then all of the sudden three or four out of maybe fifteen got flagged.