Spoiler warning for those who want to stay spoiler free for when Super Smash Bros. Ultimate releases on December 7th.
Nintendo has filed for a bunch of trademarks in Japan under the video games and accessories category, some of them are just logo based trademark like the Super Smash Bros. logo while some like Star Fox includes both logo and name.
In Nintendo’s financial brief, Nintendo President, Tatsumi Kimishima, reinforced the importance of first party games on the Nintendo Switch. At the same time he confirms Nintendo will put Super Smash Bros. on the Nintendo Switch before the year closes.