Zillow, the most popular real estate marketplace in the country, is now facing two separate lawsuits challenging its dominance in the U.S. housing market.

In its legal filing, CoStar demands Zillow remove all unlicensed CoStar photos from its sites and also pay damages, which are ...

CoStar files lawsuit against Zillow claiming systematic copyright infringement of photographs distributed across Zillow's ...

The dispute is the latest volley in a fight between Zillow and apartments.com owner CoStar, both vying for dominance in the for-sale and rental listing market.