From Bulbapedia, the community-driven Pokémon encyclopedia.
Hasbro is an American toy company based in Pawtucket, Rhode Island. It is the world's second largest toy maker, next to Mattel. Hasbro has produced numerous toys for the Pokémon franchise, ranging from Poké Balls to the Pokédex. In 1999, Hasbro acquired Wizards of the Coast and, in turn, the license to the Pokémon Trading Card Game until Wizards of the Coast lost the license to it in 2003.
Hasbro currently is not producing any Pokémon merchandise. Most of the Pokémon toys on the market today are manufactured by Jakks Pacific.