Nintendo's legal fight with Palworld suffers a reversal as the USPTO reject their patent on character-summoning battle mechanics

Nintendo's efforts to patent the idea of summoning a videogame character and letting it fight another character have suffered a significant reversal in the USA, even as the Mario makers continue a copyright infringement lawsuit against Palworld developers Pocketpair in Japan. The United States Patent and Trademark Office has now revoked the character-summoning patent in question, though their decision is "non-final". Nintendo have two months to respond and argue their case.

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