Core series/Unused Trademarks

Nintendo, Creatures, and Game Freak have trademarked several titles in the which have not currently been used but which fit the naming scheme of the core series games. The following information comes from the Japan Platform for Patent Information (Japanese, English):
 * Pocket Monsters: Topaz (Japanese: ポケットモンスタートパーズ) [application number 2002-063587, registration number 4677891]
 * Pocket Monsters: Tourmaline (Japanese: ポケットモンスタートルマリン) [application number 2002-063588, registration number 4684698]
 * Pocket Monsters: Moonstone (Japanese: ポケットモンスタームーンストーン) [application number 2002-063590, registration number 4684699]
 * Pocket Monsters: Brown (Japanese: ポケットモンスター) [application number 2008-093270, registration number 5222905]
 * Pocket Monsters: Grey (Japanese: ポケットモンスター) [application number 2008-093272, registration number 5222907]
 * Pocket Monsters: Vermilion (Japanese: ポケットモンスター) [application number 2008-093273, registration number 5222908]
 * Pocket Monsters: Purple (Japanese: ポケットモンスター) [application number 2008-093274, registration number 5222909]
 * Pocket Monsters: Crimson (Japanese: ポケットモンスター) [application number 2008-093275, registration number 5222910]
 * Pocket Monsters: Scarlet (Japanese: ポケットモンスター) [application number 2008-093276, registration number 5222911]
 * Delta Emerald (Japanese: デルタエメラルド) [application number 2014-035118, registration number 5701924]

,, , and (by virtue of Delta Emerald) are all names of minerals, while the rest are names of colors. Additionally,, , and are all shades of red.

Contrary to what is sometimes reported, the name WaterBlue was not trademarked by Nintendo, Creatures, or Game Freak. According to the Japan Platform for Patent Information, ウォーターブルー and WATER BLUE (application number 2010-060625, registration number 5386853) are trademarks of, a Japanese pharmaceutical company. However, Game Freak's Junichi Masuda did mention "WaterBlue" in 2004 on a blog post explaining the company's choice of as both Japanese and international titles for the remakes of.