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Capcom files suit against Koei Tecmo for patent infringement (Update)

Charlie Hall is Polygon’s tabletop editor. In 10-plus years as a journalist & photographer, he has covered simulation, strategy, and spacefaring games, as well as public policy.

Capcom has filed a lawsuit against Koei Tecmo Games for patent infringement, Siliconera reports based on a translation of a Sankei post. The first oral arguments were held in Osaka District Court today, with representatives from Capcom and Koei Tecmo both present.

Capcom claims that Koei Tecmo has infringed on multiple patents and is seeking a settlement of about $9.43 million.

The first patent named in the lawsuit was filed by Capcom in 2002. It relates to "a function that lets you acquire new content by combining an existing game with another piece of software." Capcom names 50 Koei Tecmo titles that infringe on this patent alone, including Samurai Warriors: Xtreme Legends for the PlayStation 2 and PlayStation 3.

The second patent is related to controller vibration due to enemy proximity.

In the suit Capcom estimates that Koei Tecmo has profited around 9.73 billion yen in total sales from these patent infringements, about $93 million. Capcom is seeking a licensing fee of 5 to 10 percent as well as a suspension of the sale of certain Koei Tecmo titles.

Polygon has reached out to both Capcom and Koei Tecmo for comment and clarification.

Update: Capcom has responded to Polygon stating that they "cannot comment on legal matters."

Update: Koei Tecmo has responded to Polygon with "No comment."

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