Wait. Did you pursue them in court or did they pursue you because of your name? Also, how did you even get your parents to go along with this? Or are you an adult?
No, what he's referring to is the fact that there was a project on Cuusoo that reached 10,000 votes JUST before the deadline for this quarterly review that had "Space Marines" as a working title, but ABSOLUTELY NOTHING to do with Lames Workshop (heh, I'm going to have to start using that one, sorta like how I call the retail store who must not be named Voldemart), and Lo and behold, as soon as it reached the review stage, Lames Workshop comes around with their brute squad and files a trademark infringement cease and desist order against them... According to the guy who created it (Nick Royer), he's currently discussing with LEGO and Lames Workshop about coming up with a new name that won't violate any of LW's sacred cash cow trademarks....
Unfortunately, while LW can't trademark the term "space marines" due to it being merely a collection of commonly used words, they CAN trademark "Space Marines" (yes, the capitalization IS important), and yes, they apparently CAN make it retroactive: All re-releases of the movie "Aliens" have to pay royalties to LW for using the Space Marines terms, despite the fact that Aliens was made over 10 years before the first Warhammer $40,000 sourcebook was even published, thanks to their hyper-aggressive team of rabid lawyers (who are apparently recruited from the same pool that Blizzard, Apple and Micro$oft get theirs from) suing anyone and everyone who comes remotely close to infringing on one of their precious trademarks (including, apparently fellow litigation happy game company, Blizzard... there must be an epic clash of the titans going on right now between their teams of gung-ho lawyers).