SomebodyThatIUseToKnow

Not sure what you're talking about - JP7545191, JP7528390, JP7493117 and JP7505854 all have a priority date / orignal filing date of December 22, 2021. Palworld may have an argument under Article 79 for a license based on prior use - if they can show that they had prepared sufficiently to engage in business activity on that date using this invention. Palworld was released January 2024, so that sounds like a far stretch.