Hah! Lucky I'd just swallowed my tea when I got to "Rickenwaffe" - not heard that one before! Yeah, they are more on the ball than anyone I've ever seen about their marks. Ric copies of any serious closeness only exist in Japan that I've ever seen... the very occasional one on ebay disappears almost immediately. I'd love a Ric solod body - a 4003 bass even moreso, but I'm resigned to the fact I'll never be able to afford one (and even then I'd struggle to justify the spend, tbh). Part of me wishes they'd do a diffusion line, A Rickensquierphone. They'd surely sell well, given their absolute nixing of the market for any other options if it's a Ric you want. (The Harely Benton options are about the only ones I've seen, and they're so deviated from the original - even if nice instruments in their own right.... you'll not see a Beatles tribute act playing them the way I've seen them use a Squier to recreate Rocky, let's put it that way...). Another part of me rather respects Ric for deciding they're happy as they are rather than just chasing the lifestyle brand market, or otherwise squeezing their property for every last penny.
It was a remarkably late registration attempt by Fender - real stable door / bolted horse stuff. Trademarking a shape wasn't an issue for them in 1951 -or 1954 - as it wasn't until 1960 that you could trademark a shape in US law. The first registered US trademark shape was the Coca Cola bottle, a shape they'd been using since 1916, so I doubt Fender would have had any trouble registering The Tele, Strat, and other shapes then. As memory serves they had the foresight to at least trademark the shape of their headstocks, though.... Similarly, they were behind the curve in the UK as well, where shape-based trademarks became an option under the Trade Marks Act 1994.
Gibson seem to have been more effective here, though from my casual awareness of their legal efforts (not least the PRS case), most of their real protection falls in the zone of lawfare.... i.e. Gibson can afford to spend a lot more than most of those they go after, and fighting a lawsuit will most of the time be far more expensive than just tweaking your design a little to make it go away. Smoke and mirrors to some extent once you see the eminently sensible decision by the Appeal court in Gibson v PRS.