All started when First Call began to advertise on Craiglist in March.Shortly after,the rival AAA Apartment Locating began to post ads using the "first call","call first" and "call us first" phrases.
No wonder First Call thought those ads were used to confuse consumers.Moreover,the company said Craiglist knew that AAA was using the First Call Trademark but they didn't do anything to stop them.
According to an article from www.mediapost.com,"if the AAA ads are found to infringe on First Call's trademark, Craigslist might be able to argue that it's an "innocent infringer" and not liable for monetary damages. Federal law provides that some publishers are not liable for damages when they run paid ads with copy that infringes on trademark. Instead, trademark owners can only obtain injunctions banning publishers from running such ads in the future. "