In the shadow of the Palworld lawsuit, Nintendo, Sega, and more Japanese gaming giants discuss patents and when taking too much inspiration becomes a problem

Mario faces the camera with a thumbs up pose in Super Smash Bros. Ulimate.
(Image credit: Nintendo)

After a busy 2024 full of legal action, we've just been given a bit of insight into Nintendo's intellectual property rights strategy (which includes things like copyright and patents) from none other than the company's patent attorney, who argues that IP rights are essential for the games industry to have healthy growth.

As reported by Japanese site Game Watch (and translated by Automaton), this comes from a conference about "The Importance of Intellectual Property Rights in the Game Industry" at Tokyo eSports Festa 2025, which saw speakers from Sega, Konami, Nintendo and more weigh in on the topic. Nintendo's perspective is particularly interesting considering how many headlines it made last year with its legal antics – from filing a lawsuit against a streamer for allegedly streaming leaked games to the patent infringement lawsuit filed against Palworld developer Pocketpair

According to Nintendo patent attorney Koji Nishiura (who also serves as deputy general manager of Nintendo's intellectual property department), it sounds like the company is thorough with the variety of IP rights it seeks to acquire so it has more ways to protect its brand. Nishiura explains that different forms of IP rights – like trademarks, patents, and design rights – can all offer their own scope of legal protection. Therefore, by Nintendo seeking to acquire a variety of them, it has a more multifaceted way to protect the brand and business.

Sega offers a slightly different perspective, with Kikuo Masumoto, the head of the company's Corporate Development HQ, explaining that it's absolutely fine for game creators to build off each others' ideas – with the games industry itself literally being built from people doing so. With that said, there's a limit to how much someone can imitate someone or something else before it goes a bit too far, at which point Sega steps in. Even so, when it comes to patents, Masumoto explains that the company doesn't file them to make sure no one else can use its technology, as they allow other companies to use them if they're willing to apply for a license to do so (and splash some cash, too). 

The general manager of Konami's legal department, Shunsuke Murase, adds onto this point, explaining that licensing game mechanics and technology helps recuperate investment. That's bound to be increasingly more important as games become more expensive to make. 

All in all, perhaps it's unsurprising that Nishiura argues that IP rights are essential for the games industry to develop in a healthy way. However, as Automaton points out, since IP rights are territorial, all of the comments from the conference should be considered with Japan specifically in mind – things won't necessarily be the same across the world.

Nintendo's IP manager admits "you can't immediately claim that an emulator is illegal in itself," but "it can become illegal depending on how it's used."

Catherine Lewis
News Writer

I'm one of GamesRadar+'s news writers, who works alongside the rest of the news team to deliver cool gaming stories that we love. After spending more hours than I can count filling The University of Sheffield's student newspaper with Pokemon and indie game content, and picking up a degree in Journalism Studies, I started my career at GAMINGbible where I worked as a journalist for over a year and a half. I then became TechRadar Gaming's news writer, where I sourced stories and wrote about all sorts of intriguing topics. In my spare time, you're sure to find me on my Nintendo Switch or PS5 playing through story-driven RPGs like Xenoblade Chronicles and Persona 5 Royal, nuzlocking old Pokemon games, or going for a Victory Royale in Fortnite.

Read more
Nintendo's IP manager admits "you can't immediately claim that an emulator is illegal in itself," but "it can become illegal depending on how it's used"
Palworld
The Palworld lawsuit gets more complicated as Nintendo bags a US patent that sounds a lot like one of the reasons it's suing Pocketpair in Japan
Mario wearing a white top hat in Super Mario Odyssey
Before Nintendo hired Shigeru Miyamoto, it tried to patent the kid's toy he made and brought to his interview: "I remember thinking, 'this is a shrewd company!'"
The Legend of Zelda: Majora's Mask
Nintendo relying on owning popular series would be "a big mistake" says Zelda, Star Fox veteran: "It's crucial not to forget the talented individuals who uphold the value of those IPs"
Photo of the OLED Tears of the Kingdom Switch and the LCD Switch together.
As the Switch 2 approaches, analyst agrees Nintendo plays a different game than PlayStation and Xbox - but "maybe not as much as Nintendo themselves might believe"
Devs behind the legendarily horny Dead or Alive series take "strict action" against nearly 3,000 pieces of content made for "adult purposes" every year
Latest in Games
Lester sitting at a computer in some artwork for GTA Online
Some GTA 5 players can't bring their characters to the new PC upgrade, and the open-world game's mixed Steam reviews are hammering FPS caps and a lack of text chat
Assassin's Creed Shadows screenshot showing Yasuke kneeling and praying while wearing a traditional purple robe
Assassin's Creed Shadows is the first game in the series with "a fully customizable sandbox" as your base, which is where Yasuke and Naoe hang out and pet baby animals
Monster Hunter Wilds screenshot of spider boss Nerscylla
Monster Hunter Wilds takes an infamously rare and annoying material from the old games and absolutely buries you in it – and also buries you in tiny spiders
Marvel Rivals Clone Rumble
Marvel Rivals' new Clone Rumble mode sounds like the kind of absolute chaos multiplayer games need more of
The two characters in Split Fiction dressed in fantasy gear each with a dragon on their back
It Takes Two dev's new co-op game Split Fiction launches as Metacritic's highest rated game of 2025, beating out Monster Hunter Wilds and Kingdom Come: Deliverance 2
Urban Dead
Cult text-based zombie MMO Urban Dead is shutting down after "a full 19 years, 8 months and 11 days" because of new UK legislation
Latest in News
Lester sitting at a computer in some artwork for GTA Online
Some GTA 5 players can't bring their characters to the new PC upgrade, and the open-world game's mixed Steam reviews are hammering FPS caps and a lack of text chat
Kamala Khan holds Jean Grey's body in an homage to the cover of Uncanny X-Men #136
45 years after the original Dark Phoenix Saga, Ms. Marvel Kamala Khan will travel back in time to save X-Men history
Assassin's Creed Shadows screenshot showing Yasuke kneeling and praying while wearing a traditional purple robe
Assassin's Creed Shadows is the first game in the series with "a fully customizable sandbox" as your base, which is where Yasuke and Naoe hang out and pet baby animals
Monster Hunter Wilds screenshot of spider boss Nerscylla
Monster Hunter Wilds takes an infamously rare and annoying material from the old games and absolutely buries you in it – and also buries you in tiny spiders
Severance
Ben Stiller asked President Barack Obama to appear in Severance and he declined in the most Obama way: "Hey Ben, big fan of the show"
My Dress-Up Darling's Marin in cosplay
After 7 years, one of my favorite manga is suddenly ending and I don't know how to feel: My Dress-Up Darling finishes this month before the anime even gets season 2