Oh, he lost potential money big time. But you don't have a deal with them, so it's loss-less for you. I'd say "laser-ish-swords" are yours, go ahead. You're not going out of your way to infringe on "Jedi".
Similarly, I've been asked multiple times if my characters who summon lightning are trending on Sith, but eh... they don't get laser-swords, they don't have mild prescience, and I haven't received a cease & desist yet. Should one arrive, I shall fight it. I have a concept of "electric charge" but let them try to trademark a Farad. Hope that works out for them.