Gree Sues Supercell Over Its New City-Building Game Patent

Supercell Oy’s “Clash of Clans” and “Boom Beach” games infringe patented technology that prompts gamers’ steps in city-building simulation games, a Japanese mobile game company has alleged.

Gree Inc. said in a May 6 complaint that its its Finnish rival is using technology covered by its U.S. Patent No. 10,279,262, which was granted by the U.S. Patent and Trademark Office May 7.

The lawsuit comes as Supercell tries to keep users spending on its games, including older titles like “Clash of Clans,” which released in 2012. The Helsinki-based game developer’s CEO, Ilkka Paananen, said in a February blog post ...