https://forums.glitchcity.info/index.php?topic=6946.0https://bulbapedia.bulbagarden.net/wiki/Core_serieshttps://www.serebii.net/archive/October-2002.shtml>List of unused Pokémon game trademarksPocket 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茶) [application number 2008-093270, registration number 5222905]
Pocket Monsters: Grey (Japanese: ポケットモンスター灰) [application number 2008-093272, registration number 5222907]
Pocket Monsters: Vermilion (Japanese: ポケットモンスター朱) [application number 2008-093273, registration number 5222908]
Pocket Monsters: Purple (Japanese: ポケットモンスター紫) [application number 2008-093274, registration number 5222909]
Pocket Monsters: Crimson (Japanese: ポケットモンスター紅) [application number 2008-093275, registration number 5222910]
Pocket Monsters: Scarlet (Japanese: ポケットモンスター緋) [application number 2008-093276, registration number 5222911]
Delta Emerald[9] (Japanese: デルタエメラルド) [application number 2014-035118, registration number 5701924]
(?): Pokémon Aqua Blue (not Water Blue because of a trademark issue) (definitely Gen 1 remake)
(October 2002? according to Serebii, I could not find another source): Pokémon Amethyst
(Some of these might have been for the TCG)
