Zynga Files Counterclaims in Copyright Case with EA

Zynga Inc. has countered a copyright-infringement lawsuit from Electronic Arts Inc. with its own allegations that EA sought a potentially illegal agreement to avoid poaching each others' employees. EA filed suit against Zynga last month, alleging that the San Francisco online social games developer had infringed copyrights protecting EA's "The Sims Social" game with Zynga's "The Ville."