Note that the following thread is a repost, updated with the latest confirmed releases. It should be common knowledge by now that Hasbro need to reuse their toys' names every 2-3 three years in order to prove "continuous use", so they're able to defend those trademarks in court. With that in mind, the frequency Hasbro reuses certain names with should be an indication of how much they're willing to fight to defend those names. Before I start, a few words on this list: 1) All names are specific with regards to spelling, spacing and punctuation, i.e. if the packaging sports a trademark claim for "SIDE SWIPE" (two words), it's not identical to "SIDESWIPE" (one word). In the same fashion, "SCATTORSHOT" (with "o") is not the same as "SCATTERSHOT" (with "e"). 2) Most of you should already know this, but compound terms are trademarked as compound terms. In other words, if the packaging says "AUTOBOT JAZZ™" with both words "AUTOBOT" and "JAZZ" in the same font, font color, font size and not divided by different background colors, that means the trademark is for "AUTOBOT JAZZ", not for the Autobot "JAZZ". The only exception to this rule are the various "Powerlinx" upgrade names. Example: "POWERLINX™ OPTIMUS PRIME®" ("®" means "registered", which is better secured than a standard "™" trademark and is only granted after several years of constant use). The separate ™ after "POWERLINX" indicates that it's a separate mark, not a compound term (albeit "OPTIMUS PRIME" itself is a compound term). On a similar note, the various "POWERMASTER OPTIMUS PRIME®" toys have the word "POWERMASTER" in a distinctively smaller font site than the name "OPTIMUS PRIME", which indicates that the "®" only refers to "OPTIMUS PRIME". The Energon upgrades, on the other hand, were trademarked as "ENERGON HOT SHOT™", "ENERGON IRONHIDE™" etc., with "ENERGON" being part of their names. And before anyone asks, the Energon Mega Dinobot two-pack had the claim "GRIMLOCK® & SWOOP™", which means both names are separate marks. Hasbro have been traditionally trademarking every individual name for multi-packs since the days of Action Masters. 3) Included herin are all regular Transformers toys released by Hasbro, beginning with Robots in Disguise, which was the point when Hasbro systematically started to reclaim G1 names and actually used them for G1 homages and representations/re-releases of G1 characters. Also included are the "Heroes of Cybertron" PVCs, the Armada and Energon "Built to Rule" toys, the smaller "Legends of Cybertron" toys, Titaniums and BotCon, OTFCC and San Diego Comic-Con exclusives, all of which were licensed by Hasbro, which means Hasbro had to own the trademarks to these names. Names of assembled combined forms from combiner teams and assembled forms of parts that came with later HoC waves are also included, since the names were printed on the packaging with trademark claims after them. 4) Repackages are counted if the toy is sold under a new product number. Running change repackages, for example Energon toys released both in standard Energon and "Powerlinx Battles" packaging, only count as one release, since the product number remained the same, whereas the re-releases of Alternators Prowl, Autobot Tracks and Meister have different product numbers than the initial releases and thus count as separate releases. The same applies to things such as the Wal*Mart exclusive repackages of Armada Mini-Con teams in "Energon" packaging, the discount chain exclusive repackages of Energon toys in "Universe" packaging and store exclusive repackages of Cybetrron toys. So, without further ado... here's the list. I've separated it into seven sections, namely "modified names", "lost trademarks with substitute names", "big guns", "other well-known G1 names", "third-stringers", "other obscure G1 names" and "non-toy G1 names".