User:TX55/Sandbags 5

Names Hasbro never lost thanks to (more or less) continuous use

Optimus Prime Grimlock Megatron Soundwave Starscream Prowl Snarl

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Names Hasbro never lost because the US Patent and Trademark Office had forgotten to cancel them

Defensor Galvatron Menasor Metroplex Omega Supreme Rodimus Prime Silverbolt Sky Lynx Superion Predaking Ultra Magnus Wreck-Gar

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Names Hasbro managed to get back with ease because no-one had tried to take them away in the meantime

Air Raid Astrotrain Barricade Beachcomber Blackout Bludgeon Blurr Bonecrusher - Bone Crusher Broadside Bruticus Buzzsaw Cliffjumper Cyclonus Dead End Dirge Divebomb Downshift Dreadwind Dreadwing Fireflight First Aid Fortress Maximus Hot Spot Inferno Hoist Huffer Ironhide - Energon Ironhide Jetfire Kickback Knockout - Knock Out Landfill Landmine Laserbeak Long Haul Mirage - Mirage GT Nightbeat - Nightbeat 7 Nightstick Overbite Overload Override Perceptor Ramjet Rampage Ransack Razorclaw Red Alert Repugnus Ricochet Roadblock Roadhandler Rollbar Runamuck Seaspray - Sea Spray Scavenger Scorponok Scourge Sixshot - Six Shot Skydive Skyfall Skywarp Sludge Slugslinger Smokescreen Springer Storm Cloud - Stormcloud Streetwise Sunstreaker Swerve Swindle Thrust Thundercracker Thunderwing Tread Bolt - Treadbolt Treadshot Trypticon Weirdwolf Wheeljack Wideload Windcharger

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Names Hasbro eventually managed to get back after someone else had claimed them

Bumblebee Ravage - Battle Ravage, Command Ravage Shockwave - Shockblast Sideswipe - Side Swipe Swoop

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Names Hasbro had to modify because they're too common these days

Brawl - Deceticon Brawl Brawn - X-Brawn Breakdown - Brakedown Camshaft - Autobot Camshaft Devastator - Constructicon Devastator Frenzy - Deceticon Frenzy Grapple - Autobot Grapple, Roadblock Groove - Autobot Groove Hound - Autobot Hound Jazz - Autobot Jazz, Meister Ratchet - Autobot Ratchet Rumble - Decepticon Rumble, Scrapmetal Scattershot - Scattorshot Scrapper - Decepticon Scrapper, Buckethead Skids - Autobot Skids, Skid-Z Tracks - Autobot Tracks Whirl - Autobot Whirl

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Names Hasbro had to find a substitute for because someone else had claimed them in the meantime, or holds a "confusingly similar" trademark

Bluestreak - Silverstreak HiQ - Ginrai Hook - Hightower Hot Rod - Rodimus Major, Rodimus, Hot Shot Mixmaster - Quickmix Motormaster - Menasor Outback - Fallback Overdrive - Windcharger Powerglide - Fireflight Runabout - Runamuck Slingshot - Ro-tor, Storm Jet Shrapnel - Insecticon Trailbreaker - Overhaul, Autobot Ratchet, Ironhide, Swindle

- - External Link [Transformers trademarks and their current status with Hasbro http://www.tfarchive.com/toys/trademarks/g1_trademarks_intro.php]