Gibson Guitar Corp. has widened its attack on the video game industry with a second patent infringement lawsuit.
It claims, in a case filed Thursday in federal district court in Nashville, that by developing, distributing and promoting the video game “Rock Band,” Harmonix, MTV Networks and Electronic Arts are violating a virtual-reality patent the guitar maker holds.
The same 1999 patent is at issue in a separate lawsuit Gibson filed earlier in the week against Wal-Mart Stores Inc. and five other retailers. The real-guitar maker claims the stores are violating the patent by selling the Activision Inc. game “Guitar Hero.”
Before Gibson filed either lawsuit, Activision sued Gibson in Los Angeles this month asking for a federal court declaration that it is not violating Gibson’s patent.