Not true.
Here’s the lowdown:
Pokemon is a brand owned by a company called They Pokemon Company. They license out their brand to other companies and take licensing and royalty fees. Nintendo licenses The Pokemon brand to develop games for Nintendo platforms. A Pokemon game made for the Nintendo DS or some other Nintendo platform is made by Nintendo under license. Additionally, at some point in the past, Nintendo acquired a 25% ownership stake in The Pokemon Company, but they don’t own the entire thing.
Pokemon Go is not made by Nintendo, but rather made by Nihilistic under license from The Pokemon Company. Nintendo has nothing to do with that game other than they make some level of revenue since they own their 25% stake in TPC. It’s kinda confusing. This is why Nintendo’s stock shot up over $1-billion after Pokemon Go came out. Uneducated investors assumed that Nintendo owned Pokemon. Once people found out this wasn’t true, the stock plummeted.