Japan gaming firm Universal Entertainment Corp. has filed a JPY100 million (US$890,684) suit against casino mogul Kazuo Okada for the failure of his privately held companies to pay patent licensing fees to the company.

Universal announced before the Japan Association of Securities Dealers Automated Quotation (Jasdaq) on Friday that they have brought Nevada-based Aruze Gaming America Inc. (AGA) before the Tokyo District Court in Japan.

The gaming conglomerate has pointed out that AGA, which makes casino slot machines and electronic table games, continues to “violate an agreement that it has executed with the Company to pay it patent licensing fees for Company-held patents by not paying said fees whatsoever.”

It also made a clarification that Universal “has no capital relationship” with AGA since their supposed shares in the latter are in fact wholly owned by Kazuo Okada.