Aren't the USPTO people supposed to do their research before allowing the trademark? I have a similar situation, a 10+ year old game that someone trademarked l

Aren't the USPTO people supposed to do their research before allowing the trademark? I have a similar situation, a 10+ year old game that someone trademarked last year, even though a simple google search would show not only mine, but also other more recent games using the name. I think any legal action on behalf of the trademark holder would be dubious as we could sue to invalidate their mark provided we are willing to pay the lawyers.